/usr/share/ncarg/nclscripts/csm/popRemap.ncl is in libncarg-data 6.2.0-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 | ;
; $Id: popRemap.ncl,v 1.15 2009-09-29 18:38:12 shea Exp $
;
;===========================================================
; D. Shea
; NCL function to perform selected grid-to-grid transformations
; **Within NCAR** the remapping files reside inseveral directories
; outside firewall
; CSM convention: /fs/cgd/csm/mapping/maps/validated
; [replaces /fs/cgd/csm/mapping/maps 14 June 2004]
; SCRIP convention: /fs/cgd/data0/shea/pop
; behind firewall
; one official master copy: /fis/cgd/cseg/csm/mapping/maps
; unofficial: /cgd/cas/shea/POP_REMAP/
;
; July 1, 2004
; We can no longer automatically access certain directories.
; I [Dennis Shea] have decided to have the code look in the
; directories specified by the environment variables:
; NCL_POP_REMAP
; and
; NCL_POP_REMAPV [ contains file with roation angles]
; or th current directory
; CCSM uses gx1v2
; Pls look at the file: /fs/cgd/csm/mapping/
;- gx1 : Greenland pole x1 (320x384) pop grid [POPX1]
;- gx1v2 : Greenland pole x1 (320x384) pop grid, version 2 (only
; different from gx1 in terms of land/ocn mask and kmt)
;- gx3 : Greenland pole x3 (100x116) pop grid [POPX3]
;- hx1 : Hudson's Bay pole x1 (384x320) pop grid [pcm2 ?]
;- r05 : 1/2 degree lat/lon grid, for runoff model
;- T21 : gaussian ccm grid
;- T31 : gaussian ccm grid
;- T42 : gaussian ccm grid
;- T62 : gaussian grid
;- T63 : gaussian ccm grid
;- T85 : gaussian ccm grid
;- T170 : gaussian ccm grid
;- 1x1d : 1 degree lat/lon grid used by Levitus
;- 1.9x2.5 : finite volume
; --------------------------------------------------------------------
undef ("create_rmpPopFileName")
function create_rmpPopFileName (gridSrc:string, gridDst:string \
,method:string, areaType:string \
,Date:string)
; invoked internally by PopLatLon and PopLatLonV
; creates the name of the file containing the remap information
; also performs various consistency/error checks
; determies directory containing the file with the remap weights
; Map names will be of the form
; map_[src grd]_to_[dst grd]_[method]_[type].nc
; or
; map_[src grd]_to_[dst grd]_[method]_[type]_Date.nc
; where [method] is bilin or aave and
; [type] is da, for destarea, or fa, for fracarea.
local ier, rmpPOP, gridPOP, dirENV, dirPOP, indP
begin
ier = 0
if (.not.(areaType.eq."da" .or. areaType.eq."fa") ) then
ier = ier + 1
print ("create_rmpPopFileName: areaType="+areaType \
+" Only da or fa recognized")
end if
if (.not.(method.eq."bilin" .or. method.eq."aave") ) then
ier = ier + 1
print ("create_rmpPopFileName: method="+method \
+" Only bilin or aave recognized")
end if
if (ier.ne.0) then
print ("create_rmpPopFileName: exit")
exit
end if
; concatenate
if (Date.eq."" .or. Date.eq." ") then
rmpPOP = "map_"+gridSrc+"_to_"+gridDst \
+"_"+method+"_"+areaType+".nc"
else
rmpPOP = "map_"+gridSrc+"_to_"+gridDst \
+"_"+method+"_"+areaType+"_"+Date+".nc"
end if
;dirENV = "/fis/cgd/cseg/csm/mapping/maps"
dirENV = getenv("NCL_POP_REMAP")
if (ismissing(dirENV)) then
dirPOP = (/ "./" /) ; local only
else
dirPOP = (/ dirENV, "." /) + "/"
end if
;print (dirPOP)
do nd=0,dimsizes(dirPOP)-1
;print ("nd="+nd+" dirPOP="+dirPOP(nd))
gridPOP = systemfunc("cd "+dirPOP(nd)+" ; ls map_*")
;print (gridPOP)
indP = ind(gridPOP.eq.rmpPOP)
if (.not.ismissing(indP)) then ; ?supported transformation?
print ("create_rmpPopFileName: "+dirPOP(nd)+rmpPOP)
return (dirPOP(nd)+rmpPOP)
end if
delete (gridPOP)
end do
print ("create_rmpPopFileName: file not recognized/found: " +rmpPOP)
print ("create_rmpPopFileName: dir searched: " +dirPOP)
exit
end
; ----------------------------------------------------------
undef ("create_rmpPopFileName2")
function create_rmpPopFileName2(gridSrc:string, gridDst:string \
,method:string, areaType:string )
; invoked internally by PopLatLon and PopLatLonV
; creates the name of the file containing the remap information
; also performs various consistency/error checks
; determies directory containing the file with the remap weights
; Map names will be of the form
; map_[src grd]_to_[dst grd]_[method]_[type].nc
; or
; map_[src grd]_to_[dst grd]_[method]_[type]_Date.nc
; where [method] is bilin or aave and
; [type] is da, for destarea, or fa, for fracarea.
local ier, rmpPOP, gridPOP, dirENV, dirPOP, indP
begin
ier = 0
if (.not.(areaType.eq."da" .or. areaType.eq."fa") ) then
ier = ier + 1
print ("create_rmpPopFileName2: areaType="+areaType \
+" Only da or fa recognized")
end if
if (.not.(method.eq."bilin" .or. method.eq."aave") ) then
ier = ier + 1
print ("create_rmpPopFileName2: method="+method \
+" Only bilin or aave recognized")
end if
if (ier.ne.0) then
print ("create_rmpPopFileName2: exit")
exit
end if
; concatenate
rmpPOP = "map_"+gridSrc+"_to_"+gridDst \
+"_"+method+"_"+areaType+"_"+"*.nc"
;dirENV = "/fis/cgd/cseg/csm/mapping/maps"
dirENV = getenv("NCL_POP_REMAP")
if (ismissing(dirENV)) then
dirPOP = (/ "./" /) ; local only
else
dirPOP = (/ dirENV, "." /) + "/"
end if
;print (dirPOP)
do nd=0,dimsizes(dirPOP)-1
;print ("nd="+nd+" dirPOP="+dirPOP(nd))
gridPOP = systemfunc("cd "+dirPOP(nd)+" ; ls "+rmpPOP)
;print (gridPOP)
if (.not.ismissing(gridPOP)) then ; ?supported transformation?
print ("create_rmpPopFileName2: "+dirPOP(nd)+gridPOP)
return (dirPOP(nd)+gridPOP)
end if
delete (gridPOP)
end do
print ("create_rmpPopFileName2: file not recognized/found: " +rmpPOP)
print ("create_rmpPopFileName2: dir searched: " +dirPOP)
exit
end
; ----------------------------------------------------------
undef ("create_rotPopFileName")
function create_rotPopFileName (gridSrc:string, gridDst:string)
; invoked internally by PopLatLonV
; creates the name of the file containing the rotation angles
; all files containing the appropriate rotation angles begin with "rot_"
local dirENV, dirPOPV, rotPOPV, indRot, gridROT
begin
;print ("create_rotPopFileName: gridSrc="+gridSrc+" gridDst="+gridDst)
; names with rot angles
rotPOP = (/ "POPX3","POP23" , "POP43", "gx1v2", "gx1v3" \
, "gx1v4", "gx1v5", "gx1v6" \
, "gx3v3", "gx3v4", "gx3v5", "gx3v6", "gx3v7" \
, "gx3Uum", "gx3uum" \
, "gx3", "gx3p", "hx1", "crx3", "tx0.1v2" /)
indRot = ind(gridSrc.eq.rotPOP)
if (ismissing(indRot)) then
indRot = ind(gridDst.eq.rotPOP) ; try other grid type
if (ismissing(indRot)) then
print ("create_rotPopFileName: file not recognized/supported: " \
+gridSrc+" or "+gridDst)
exit
end if
end if
;dirENV = "/cgd/cas/shea/POP_REMAP" ; dir with transform files
dirENV = getenv("NCL_POP_REMAPV")
if (ismissing(dirENV)) then
dirPOPV = (/ "./" /) ; local only
else
dirPOPV = (/ dirENV, "." /) + "/"
end if
rotPOPV = "rot_"+gridSrc+".nc"
do nd=0,dimsizes(dirPOPV)-1
gridROT = systemfunc("cd "+dirPOPV(nd)+" ; ls rot_*")
indP = ind(gridROT.eq.rotPOPV)
;print ("nd="+nd+" indP="+indP)
if (.not.ismissing(indP)) then ; ?supported transformation?
print ("create_rotPopFileName: "+dirPOPV(nd)+rotPOPV)
return (dirPOPV(nd)+rotPOPV)
end if
delete (gridROT)
end do
print ("create_rotPopFileName: file not recognized/found: " +rotPOPV)
print ("create_rotPopFileName: dir searched: " +dirPOPV)
exit
end
; -----------------------------------------------------
undef("copy_VA_pop")
procedure copy_VA_pop(var_from,var_to)
; invoked internally
; Copies all attributes (e.g. long_name) from one variable to another
local att_names, i
begin
att_names =getvaratts(var_from);
if(.not.all(ismissing(att_names)))
do i = 0,dimsizes(att_names)-1
var_to@$att_names(i)$ = var_from@$att_names(i)$
end do
end if
end
; -----------------------------------------------------
; internal function
; Copy the coordinate variables from one variable to another,
; except for last two dimensions.
; The "iOffSet" is for the vector case where there is one
; extra dimension.
undef ("copy_CV_2_pop")
procedure copy_CV_2_pop(var_from,var_to, iOffSet:integer)
local dimt, dimf, rfrom, rto, i
begin
dimf = dimsizes(var_from)
rfrom = dimsizes(dimf) ; rank of var_from
if (rfrom.gt.2) then
dimt = dimsizes(var_to)
rto = dimsizes(dimt) ; rank of var_to
do i = 0,rfrom-3 ; do not use last two dimensions
if (.not.ismissing(var_from!i) .and. dimf(i).eq.dimt(i) ) then
var_to!(i+iOffSet) = var_from!i
if(iscoord(var_from,var_from!i))
var_to&$var_to!i$ = var_from&$var_from!i$
end if
end if
end do
end if
end
; -----------------------------------------------------
undef ("PopCoord")
procedure PopCoord (x:numeric, gDst:string
,latStart:numeric,lonStart:numeric)
; invoked internally by PopLatLon and PopLatLonV
; ------this could be cleaned up a bit----------
; AFTER PopLatLon or PopLatLonV has generated
; one of the supported "destination" [Dst]
; lat/lon grids (HlfD, OneD, TwoD, 1x1d),
; have this routine generate the named dimensions
; and coordinates arrays for the two rightmost dimensions
local dimx, nDx, nlat, mlon, dlon, nadd, dlat, lat, lon
begin
dimx = dimsizes (x) ; dimension sizes of x
nDx = dimsizes(dimx) ; # of dimensions
nlat = dimx(nDx-2) ; # latitudes [for clarity]
mlon = dimx(nDx-1) ; # longitudes [for clarity]
dlon = 360./mlon
nadd = nlat%2
dlat = 180./(nlat-nadd)
if (gDst.eq."T170".or. gDst.eq."T85" .or. \
gDst.eq."T63" .or. gDst.eq."T62" .or. \
gDst.eq."T42" .or. gDst.eq."T21" .or. \
gDst.eq."TwoD" .or.gDst.eq."OneD".or. \
gDst.eq."HlfD" .or.gDst.eq."1x1d".or. \
gDst.eq."1x1125" .or. gDst.eq."2x25d".or. \
gDst.eq."T31" .or.gDst.eq."1.9x2.5" .or. \
gDst.eq."fv0.9x1.25" .or. gDst.eq."fv1.9x2.5" .or. \
gDst.eq."0.1x0.1") then
if (gDst.eq."T170".or. gDst.eq."T85" .or. \
gDst.eq."T63" .or. gDst.eq."T62" .or. \
gDst.eq."T42" .or. gDst.eq."T21" .or. \
gDst.eq."T31") then
if (typeof(x).eq."double") then
gau_info= gaus(nlat/2) ; gaussian latitudes and wts
else
gau_info= doubletofloat(gaus(nlat/2))
end if
lat = gau_info(:,0) ; gaussian lats (1st dim of gau_info)
end if
;print (gDst \
; +" nlat="+nlat+" mlon="+mlon \
; +" latStart="+latStart+" lonStart="+lonStart)
if (lonStart.ge.358.) then ; kinda funny
lonStart = lonStart - 360. ; T63 and TwoD
end if
; SPECIAL OVERRIDE
if (gDst.eq."OneD" .or. gDst.eq."1x1d") then
latStart = -89.5
end if
if (gDst.eq."HlfD" ) then
latStart = -89.75
end if
if (gDst.eq."0.1x0.1" ) then
latStart = -89.95
end if
if (gDst.eq."2x25d" ) then
latStart = 90.
end if
; END OVERRIDE
if (gDst.eq."HlfD" .or. gDst.eq."OneD" .or. \
gDst.eq."TwoD" .or. gDst.eq."1x1d" .or. \
gDst.eq."1x1125" .or. gDst.eq."0.1x0.1" .or. gDst.eq."2x25d") then
lat = latStart + fspan (0,(nlat-1)*dlat, nlat); generate latitudes
end if
lon = lonStart + fspan (0,(mlon-1)*dlon, mlon); generate longitudes
;print(lon)
if (gDst.eq."2x25d" ) then
lat(0) = -89.45 ; stranger than fiction
lat(nlat-1) = 89.45
end if
if (isvar("lat")) then
lat@long_name = "latitude"
lat@units = "degrees_north"
end if
if (isvar("lon")) then
lon@long_name = "longitude"
lon@units = "degrees_east"
end if
; ; MAJOR kluge 3/16/2008, 3/2/2011
if (gDst.eq."1.9x2.5" .or. gDst.eq."fv1.9x2.5" .or. \
gDst.eq."0.9x1.25".or. gDst.eq."fv0.9x1.25") then
if (isvar("lat")) then
delete(lat) ; DJS stuck this in 3/16/2008
end if
if (isvar("lon")) then
delete(lon)
end if
if (gDst.eq."1.9x2.5" .or. gDst.eq."fv1.9x2.5") then
nlat = 96
mlon = 144
end if
if (gDst.eq."0.9x1.25".or. gDst.eq."fv0.9x1.25") then
nlat = 192
mlon = 288
end if
lat = latGlobeF(nlat, "lat", "latitude", "degrees_north")
lon = lonGlobeF(mlon, "lon", "longitude", "degrees_east")
end if
x!(nDx-2) = "lat" ; name dimensions
x!(nDx-1) = "lon"
x&lat = lat ; add coordinate arrays
x&lon = lon
if (lonStart.gt.0.) then
lon@modulo_lon = 360.
end if
else ; on POP grid
Y = ispan(1,nlat,1) ; consistent with SCRIP
Y@long_name = "Latitude index"
Y!0 = "Y"
Y&Y = Y
X = ispan(1,mlon,1) ; consistent with SCRIP
X@long_name = "Longitude index"
X!0 = "X"
X&X = X
x!(nDx-2) = "Y"
x!(nDx-1) = "X"
x&Y = Y ; attach index coord vars
x&X = X
if (isatt(x,"coordinate_caution")) then
delete (x@coordinate_caution)
end if
end if
; get rid of 2D graphical "coordinate attributes"
; these should not be associated with the return variable
if (isatt(x,"lat2d")) then
delete(x@lat2d)
end if
if (isatt(x,"lon2d")) then
delete(x@lon2d)
end if
;x@coordinate_caution = "Coordinates are educated guesses. "+ \
; "No info available."
;return (x)
end
; ----------------------------------------------------------
undef ("PopLatLon2D")
function PopLatLon2D (x[*][*]:numeric, ny:integer, mx:integer \
,map_wts[*][*]:numeric, dst_add[*]:numeric \
,src_add[*]:numeric \
,nlink:integer, nwt:integer)
; invoked internally by PopLatLon
; extra arguments are used when testing fortran .so code
; also, when testing .so type must be changed to float
local in_1D, out_1D
begin
; note: pop_rmap needs input and output grids to be 1D
in_1D = ndtooned ( x )
out_1D = new (ny*mx, typeof(x), getFillValue(x) )
; f77 interface ; used for test
;POP::remap_pop(xNew_1D , map_wts, dst_add ,src_add, x_1D \
; ,dimsizes(xNew_1D),nlink,nwt,dimsizes(x_1D)\
; ,x_1D@_FillValue)
; print ("========== PopLatLon2D ==========")
; print ("dimsizes(dst_add)="+dimsizes(dst_add))
; print ("dimsizes(src_add)="+dimsizes(src_add))
; print ("dimsizes(map_wts)="+dimsizes(map_wts))
; print ("dimsizes(xNew_1D)="+dimsizes(xNew_1D))
; print ("dimsizes(x_1D)="+dimsizes(x_1D))
;
;******************************************************
; conduct remapping and convert 1D array to full grid
;******************************************************
pop_remap(out_1D,map_wts,dst_add,src_add,in_1D) ; NCL function
return(onedtond(out_1D, (/ny,mx/)))
end
; ----------------------------------------------------------
undef ("PopLatLon")
function PopLatLon (x:numeric, gridSrc:string, gridDst:string \
, method:string, areaType:string \
, Date:string)
; Regrid a variable from one grid to the other
;
; EG: xOut = PopLatLon(x, "gx1v2" , "T62", "bilin", "da")
; EG: xOut => xOut( 94,192)[lat,lon]
; EG: xPOP = PopLatLon(xOut , "T62", "gx3", "aave", "da" )
; EG: xPOP => xPOP( ny, nx)
local rmpFile, fP, dim_x, dim_src, dst_add\
, src_ad, map_wts, dim_wts, nlink, nwt, dim_dst, mlon, nlat \
, latStart, lonStart, x_atts, i, xmsg, n, nDx, rmpType
begin
print (" ")
;*****************************************************************
; take user input for original and destination grid and determine
; what weight file should be used.
;*****************************************************************
rmpFile = create_rmpPopFileName (gridSrc, gridDst, method, areaType, Date )
;print ("PopLatLon: rmpFile="+rmpFile)
fP = addfile(rmpFile,"r")
;*****************************************************************
; check to see if weight file for source and actual data source
; have the same dimensions.
;*****************************************************************
dim_src = fP->src_grid_dims ; size source grid
dim_x = dimsizes( x ) ; consistency check
nDx = dimsizes( dim_x ) ; rank [# dimensions] of data
if (dim_x(nDx-2).ne.dim_src(1) .or. dim_x(nDx-1).ne.dim_src(0)) then
print ("PopLatLon: Input and Tranform do not match")
print ("PopLatLon: -----Dimension mismatch-------")
print (dim_src)
print ("PopLatLon: dim_x(nDx-2)="+dim_x(nDx-2) )
print ("PopLatLon: dim_x(nDx-1)="+dim_x(nDx-1) )
print ("PopLatLon: dim_src(1)="+dim_src(1) )
print ("PopLatLon: dim_src(0)="+dim_src(0) )
exit
end if
;*******************************************************
; determine which type of convention the weight file was
; written out in.
; for NCAR CSM models we want CSM, for PCM models we expect
; SCRIP
;*******************************************************
if (isfilevar(fP, "row")) then
convention = "CSM"
else
if (isfilevar(fP, "remap_matrix")) then
convention = "SCRIP"
else
print ("PopLatLon: don't know which convention")
print ("PopLatLon: weight file="+rmpFile)
exit
end if
end if
;*********************************************************
if (convention.eq."CSM") then
; print ("PopLatLon: convention="+convention)
dst_add = fP->row ; destination grid [linear]
src_add = fP->col ; source grid [linear]
s = fP->S ; wts [fortran indexing]
dims = dimsizes(s) ; size of each dimension
ranks = dimsizes(dims) ; rank [# dimensions]
; printVarSummary (s)
; print ("dimensions of weight file is ="+dims)
; print ("ranks="+ranks)
;**********************************************************
; create local weights array. pop_remap requires weights to
; have two dimensions. If they come in as only 1D, then create
; a dummy dimension
;**********************************************************
if (ranks.eq.1) then
; print("PopLatLon: in_wts are 1D, making 2D")
; map_wts = new ( (/ 1,dims(0)/), typeof(s))
; map_wts(0,:) = s
map_wts = new ( (/ dims(0),1/), typeof(s))
map_wts(:,0) = s
else
map_wts = new ( (/dims(1)+1,dims(0)/), typeof(s))
map_wts = s
end if
delete (s)
yc_b0 = fP->yc_b(0)
xc_b0 = fP->xc_b(0)
if (.not.isatt(yc_b0, "units")) then
latStart= doubletofloat( yc_b0 )*57.29578
lonStart= doubletofloat( xc_b0 )*57.29578
else
latStart= doubletofloat( yc_b0 )
lonStart= doubletofloat( xc_b0 )
end if
else
;************************************************************
; SCRIP weight files
;************************************************************
; print ("PopLatLon: convention=SCRIP")
dst_add = fP->dst_address ; destination grid [linear]
src_add = fP->src_address ; source grid [linear]
map_wts = fP->remap_matrix ; wts
latStart= doubletofloat( fP->dst_grid_center_lat(0) )*57.29578
lonStart= doubletofloat( fP->dst_grid_center_lon(0) )*57.29578
end if
; print ("PopLatLon: lonStart="+lonStart)
; print ("PopLatLon: latStart="+latStart)
dim_wts = dimsizes(map_wts)
nlink = dim_wts(0)
nwt = dim_wts(1)
;*********************************************************
; now deal with the destination grid
;*********************************************************
dim_dst = fP->dst_grid_dims ; size destination grid
mlon = dim_dst(0) ; eg: 192 for T63
nlat = dim_dst(1) ; eg: 94 for T63
;*******************************************************
; Attach missing_value/_FillValue if necessary
;*******************************************************
if (.not.(isatt(x,"missing_value") .and. isatt(x,"_FillValue")) ) then
if (isatt(x,"missing_value") .and. .not.isatt(x,"_FillValue")) then
x@_FillValue = x@missing_value
else
if (isatt(x,"_FillValue") .and. .not.isatt(x,"missing_value")) then
x@missing_value = x@_FillValue
else
xmsg = new ( 1, typeof(x) )
xmsg = 1.e30 ; create msg val
x@missing_value = xmsg
x@_FillValue = xmsg
end if
end if
end if
xmsg = x@_FillValue
;*******************************************************
; Actual remapping is done here
;*******************************************************
if (nDx.eq.2) then ; lat,lon grid
; print("input grid is [lat,lon]")
; print ("dimsizes(dst_add)="+dimsizes(dst_add))
; print ("dimsizes(src_add)="+dimsizes(src_add))
; print ("dimsizes(map_wts)=:")
; print (dimsizes(map_wts))
xOut = PopLatLon2D(x, nlat, mlon, map_wts, dst_add, src_add \
, nlink, nwt)
end if
if (nDx.eq.3) then
xOut = new ( (/dim_x(0),nlat,mlon/), typeof(x), getFillValue(x) )
do n=0,dim_x(0)-1
xOut(n,:,:) = PopLatLon2D(x(n,:,:), nlat, mlon, map_wts \
,dst_add, src_add, nlink, nwt)
end do
if (.not.ismissing(x!0)) then ; if coord present copy
xOut!0 = x!0
if (iscoord(x,x!0)) then
xOut&$x!0$ = x&$x!0$
end if
end if
end if
if (nDx.eq.4) then
xOut = new ( (/dim_x(0), dim_x(1),nlat,mlon/), typeof(x), getFillValue(x) )
do n=0,dim_x(0)-1
do i=0,dim_x(1)-1
xOut(n,i,:,:) = PopLatLon2D(x(n,i,:,:), nlat, mlon, map_wts \
,dst_add, src_add, nlink, nwt)
end do
end do
do n=0,1
if (.not.ismissing(x!n)) then ; if coord present copy
xOut!n = x!n
if (iscoord(x,x!n)) then
xOut&$x!n$ = x&$x!n$
end if
end if
end do
end if
;*****************************************************************
; take care of attributes
;*****************************************************************
copy_VA_pop(x,xOut)
xOut@_FillValue = xmsg ; force common msg val
if (isatt(xOut,"missing_value")) then
delete(xOut@missing_value)
end if
xOut@missing_value = xmsg
if (isatt(fP,"map_method")) then
xOut@spatial_op = fP@map_method + ": 1st order"
else
xOut@spatial_op = "Unknown remapping"
end if
if (isatt(fP,"normalization")) then
xOut@spatial_op = xOut@spatial_op +": "+fP@normalization
end if
xOut@spatial_op = xOut@spatial_op +": NCL: "+rmpFile
;*************************************************
; add lat/lon [grid point] coord variables
;*************************************************
PopCoord (xOut, gridDst, latStart, lonStart)
;*************************************************
; output result
;*************************************************
print (" ")
return(xOut) ; return as 2D array
end
;----------------------------------------------------------------------
undef ("PopLatLon2")
function PopLatLon2(x:numeric, gridSrc:string, gridDst:string \
, method:string, areaType:string )
; Regrid a variable from one grid to the other
;
; EG: xOut = PopLatLon(x, "gx1v2" , "T62", "bilin", "da")
; EG: xOut => xOut( 94,192)[lat,lon]
; EG: xPOP = PopLatLon(xOut , "T62", "gx3", "aave", "da" )
; EG: xPOP => xPOP( ny, nx)
local rmpFile, fP, dim_x, dim_src, dst_add\
, src_ad, map_wts, dim_wts, nlink, nwt, dim_dst, mlon, nlat \
, latStart, lonStart, x_atts, i, xmsg, n, nDx, rmpType
begin
print (" ")
;*****************************************************************
; take user input for original and destination grid and determine
; what weight file should be used.
;*****************************************************************
rmpFile = create_rmpPopFileName2(gridSrc, gridDst, method, areaType )
;print ("PopLatLon2: rmpFile="+rmpFile)
fP = addfile(rmpFile,"r")
;*****************************************************************
; check to see if weight file for source and actual data source
; have the same dimensions.
;*****************************************************************
dim_src = fP->src_grid_dims ; size source grid
dim_x = dimsizes( x ) ; consistency check
nDx = dimsizes( dim_x ) ; rank [# dimensions] of data
if (dim_x(nDx-2).ne.dim_src(1) .or. dim_x(nDx-1).ne.dim_src(0)) then
print ("PopLatLon2: Input and Tranform do not match")
print ("PopLatLon2: -----Dimension mismatch-------")
print (dim_src)
print ("PopLatLon2: dim_x(nDx-2)="+dim_x(nDx-2) )
print ("PopLatLon2: dim_x(nDx-1)="+dim_x(nDx-1) )
print ("PopLatLon2: dim_src(1)="+dim_src(1) )
print ("PopLatLon2: dim_src(0)="+dim_src(0) )
exit
end if
;*******************************************************
; determine which type of convention the weight file was
; written out in.
; for NCAR CSM models we want CSM, for PCM models we expect
; SCRIP
;*******************************************************
if (isfilevar(fP, "row")) then
convention = "CSM"
else
if (isfilevar(fP, "remap_matrix")) then
convention = "SCRIP"
else
print ("PopLatLon2: don't know which convention")
print ("PopLatLon2: weight file="+rmpFile)
exit
end if
end if
;*********************************************************
if (convention.eq."CSM") then
; print ("PopLatLon2: convention="+convention)
dst_add = fP->row ; destination grid [linear]
src_add = fP->col ; source grid [linear]
s = fP->S ; wts [fortran indexing]
dims = dimsizes(s) ; size of each dimension
ranks = dimsizes(dims) ; rank [# dimensions]
; printVarSummary (s)
; print ("dimensions of weight file is ="+dims)
; print ("ranks="+ranks)
;**********************************************************
; create local weights array. pop_remap requires weights to
; have two dimensions. If they come in as only 1D, then create
; a dummy dimension
;**********************************************************
if (ranks.eq.1) then
; print("PopLatLon2: in_wts are 1D, making 2D")
; map_wts = new ( (/ 1,dims(0)/), typeof(s))
; map_wts(0,:) = s
map_wts = new ( (/ dims(0),1/), typeof(s))
map_wts(:,0) = s
else
map_wts = new ( (/dims(1)+1,dims(0)/), typeof(s))
map_wts = s
end if
delete (s)
yc_b0 = fP->yc_b(0)
xc_b0 = fP->xc_b(0)
if (.not.isatt(yc_b0, "units")) then
latStart= doubletofloat( yc_b0 )*57.29578
lonStart= doubletofloat( xc_b0 )*57.29578
else
latStart= doubletofloat( yc_b0 )
lonStart= doubletofloat( xc_b0 )
end if
else
;************************************************************
; SCRIP weight files
;************************************************************
; print ("PopLatLon2: convention=SCRIP")
dst_add = fP->dst_address ; destination grid [linear]
src_add = fP->src_address ; source grid [linear]
map_wts = fP->remap_matrix ; wts
latStart= doubletofloat( fP->dst_grid_center_lat(0) )*57.29578
lonStart= doubletofloat( fP->dst_grid_center_lon(0) )*57.29578
end if
; print ("PopLatLon2: lonStart="+lonStart)
; print ("PopLatLon2: latStart="+latStart)
dim_wts = dimsizes(map_wts)
nlink = dim_wts(0)
nwt = dim_wts(1)
;*********************************************************
; now deal with the destination grid
;*********************************************************
dim_dst = fP->dst_grid_dims ; size destination grid
mlon = dim_dst(0) ; eg: 192 for T63
nlat = dim_dst(1) ; eg: 94 for T63
;*******************************************************
; Attach missing_value/_FillValue if necessary
;*******************************************************
if (.not.(isatt(x,"missing_value") .and. isatt(x,"_FillValue")) ) then
if (isatt(x,"missing_value") .and. .not.isatt(x,"_FillValue")) then
x@_FillValue = x@missing_value
else
if (isatt(x,"_FillValue") .and. .not.isatt(x,"missing_value")) then
x@missing_value = x@_FillValue
else
xmsg = new ( 1, typeof(x) )
xmsg = 1.e30 ; create msg val
x@missing_value = xmsg
x@_FillValue = xmsg
end if
end if
end if
xmsg = x@_FillValue
;*******************************************************
; Actual remapping is done here
;*******************************************************
if (nDx.eq.2) then ; lat,lon grid
; print("input grid is [lat,lon]")
; print ("dimsizes(dst_add)="+dimsizes(dst_add))
; print ("dimsizes(src_add)="+dimsizes(src_add))
; print ("dimsizes(map_wts)=:")
; print (dimsizes(map_wts))
xOut = PopLatLon2D(x, nlat, mlon, map_wts, dst_add, src_add \
, nlink, nwt)
end if
if (nDx.eq.3) then
xOut = new ( (/dim_x(0),nlat,mlon/), typeof(x), getFillValue(x) )
do n=0,dim_x(0)-1
xOut(n,:,:) = PopLatLon2D(x(n,:,:), nlat, mlon, map_wts \
,dst_add, src_add, nlink, nwt)
end do
if (.not.ismissing(x!0)) then ; if coord present copy
xOut!0 = x!0
if (iscoord(x,x!0)) then
xOut&$x!0$ = x&$x!0$
end if
end if
end if
if (nDx.eq.4) then
xOut = new ( (/dim_x(0), dim_x(1),nlat,mlon/), typeof(x), getFillValue(x) )
do n=0,dim_x(0)-1
do i=0,dim_x(1)-1
xOut(n,i,:,:) = PopLatLon2D(x(n,i,:,:), nlat, mlon, map_wts \
,dst_add, src_add, nlink, nwt)
end do
end do
do n=0,1
if (.not.ismissing(x!n)) then ; if coord present copy
xOut!n = x!n
if (iscoord(x,x!n)) then
xOut&$x!n$ = x&$x!n$
end if
end if
end do
end if
;*****************************************************************
; take care of attributes
;*****************************************************************
copy_VA_pop(x,xOut)
xOut@_FillValue = xmsg ; force common msg val
if (isatt(xOut,"missing_value")) then
delete(xOut@missing_value)
end if
xOut@missing_value = xmsg
if (isatt(fP,"map_method")) then
xOut@spatial_op = fP@map_method + ": 1st order"
else
xOut@spatial_op = "Unknown remapping"
end if
if (isatt(fP,"normalization")) then
xOut@spatial_op = xOut@spatial_op +": "+fP@normalization
end if
xOut@spatial_op = xOut@spatial_op +": NCL: "+rmpFile
;*************************************************
; add lat/lon [grid point] coord variables
;*************************************************
PopCoord (xOut, gridDst, latStart, lonStart)
;*************************************************
; output result
;*************************************************
print (" ")
return(xOut) ; return as 2D array
end
;----------------------------------------------------------------------
undef("preRotate_PopLatLon2D")
function preRotate_PopLatLon2D \
(u[*][*]:numeric, v[*][*]:numeric , rot[*]:numeric \
,ny:integer, mx:integer ,map_wts[*][*]:numeric \
,dst_add[*]:numeric, src_add[*]:numeric, uvmsg:numeric)
; invoked internally by PopLatLonV
local u_1D, v_1D, uWRK_1D, vWRK_1D, uNew_1D, vNew_1D
begin
;print("this grid is pre-rotated")
u_1D = ndtooned ( u ) ; required for remap
v_1D = ndtooned ( v )
; rotate axis PRIOR to remap
uWRK_1D = u_1D*cos(rot) - v_1D*sin(rot) ; still on POP grid
vWRK_1D = u_1D*sin(rot) + v_1D*cos(rot)
delete (u_1D)
delete (v_1D)
uNew_1D = new ( mx*ny, typeof(u) , uvmsg) ; preallocate for the
vNew_1D = new ( mx*ny, typeof(v) , uvmsg) ; returned arrays
; 1st order remap
pop_remap(uNew_1D, map_wts, dst_add ,src_add, uWRK_1D )
pop_remap(vNew_1D, map_wts, dst_add ,src_add, vWRK_1D )
; create return array
uvNew = new ((/2,ny,mx/), typeof(u) , uvmsg)
uvNew(0,:,:) = onedtond ( uNew_1D, (/ny,mx/)) ; now in lat/lon space
uvNew(1,:,:) = onedtond ( vNew_1D, (/ny,mx/))
return (uvNew)
end
;----------------------------------------------------------------------
undef("postRotate_PopLatLon2D")
function postRotate_PopLatLon2D \
(u[*][*]:numeric, v[*][*]:numeric , rot[*]:numeric \
,ny:integer, mx:integer ,map_wts[*][*]:numeric \
,dst_add[*]:numeric, src_add[*]:numeric, uvmsg:numeric)
begin
;print("this grid is post rotated")
uWRK_1D = new ( mx*ny, typeof(u) , uvmsg)
vWRK_1D = new ( mx*ny, typeof(v) , uvmsg)
;1st order remap
pop_remap(uWRK_1D, map_wts, dst_add ,src_add, ndtooned (u) )
pop_remap(vWRK_1D, map_wts, dst_add ,src_add, ndtooned (v) )
; rotate axis AFTER remap
uNew_1D = uWRK_1D*cos(rot) + vWRK_1D*sin(rot)
vNew_1D = -uWRK_1D*sin(rot) + vWRK_1D*cos(rot)
delete (uWRK_1D)
delete (vWRK_1D)
uvNew = new ((/2,ny,mx/), typeof(u) , uvmsg)
uvNew(0,:,:) = onedtond ( uNew_1D, (/ny,mx/))
uvNew(1,:,:) = onedtond ( vNew_1D, (/ny,mx/))
return (uvNew)
end
; ----------------------------------------------------------
undef ("PopLatLonV")
function PopLatLonV (u:numeric , v:numeric \
,gridSrc:string, gridDst:string \
,method:string, areaType:string \
,Date:string)
; Regrid a vector from one grid to the other
; EG: xOut = PopLatLonV(xPOP23, "gx1v2" , "T62", "bilin", "da", ""))
; EG: xOut => xOut( 94,192)[lat,lon]
; EG: xPOP = PopLatLonV(xOut , "T62", "gx3", "aave", "da", "010808" )
; EG: xPOP => xPOP( ny, nx)
local rmpFile, rotFile, fP, gP, dim_u, dim_src, dst_add \
, src_add, map_wts, dim_wts, nlink, nwt, dim_dst, mlon, nlat \
, latStart, lonStart, u_1D, v_1D, gP, rot, gridChar, gridSrcTyp \
, uWRK_1D, vWRK_1D, uNew_1D, vNew_1D, uvNew, u_atts, i
begin
print (" ")
rmpFile = create_rmpPopFileName (gridSrc, gridDst \
,method, areaType , Date )
fP = addfile(rmpFile,"r")
dim_u = dimsizes( u ) ; consistency check
nDu = dimsizes( dim_u ) ; rank [# dimensions]
dim_src = fP->src_grid_dims ; size source grid
if (dim_u(nDu-2).ne.dim_src(1) .or. dim_u(nDu-1).ne.dim_src(0)) then
print ("PopLatLonV: Input and Tranform do not match")
print ("PopLatLonV: -----Dimension mismatch--------")
print ("PopLatLonV: dim_x(nDx-2)="+dim_x(nDx-2) )
print ("PopLatLonV: dim_x(nDx-1)="+dim_x(nDx-1) )
print ("PopLatLonV: dim_src(1)="+dim_src(1) )
print ("PopLatLonV: dim_src(0)="+dim_src(0) )
exit
end if
;*******************************************************
; determine which type of convention the weight file was
; written out in.
; for NCAR CSM models we want CSM, for PCM models we expect
; SCRIP
;*******************************************************
if (isfilevar(fP, "row")) then
convention = "CSM"
else
if (isfilevar(fP, "remap_matrix")) then
convention = "SCRIP"
else
print ("PopLatLon: don't know which convention")
print ("PopLatLon: weight file="+rmpFile)
exit
end if
end if
if (convention.eq."CSM") then
dst_add = fP->row ; destination grid [linear]
src_add = fP->col ; source grid [linear]
s = fP->S ; wts [fortran indexing]
dims = dimsizes(s) ; size of each dimension
ranks = dimsizes(dims) ; rank [# dimensions]
if (ranks.eq.1) then
map_wts = new ( (/ dims(0),1/), typeof(s))
map_wts(:,0) = s
else
map_wts = new ( (/dims(1)+1,dims(0)/), typeof(s))
map_wts = s
end if
delete (s)
yc_b0 = fP->yc_b(0)
xc_b0 = fP->xc_b(0)
if (.not.isatt(yc_b0, "units")) then
latStart= doubletofloat( yc_b0 )*57.29578
lonStart= doubletofloat( xc_b0 )*57.29578
else
latStart= doubletofloat( yc_b0 )
lonStart= doubletofloat( xc_b0 )
end if
else ; for SCRIP convention
dst_add = fP->dst_address ; destination grid [linear]
src_add = fP->src_address ; source grid [linear]
map_wts = fP->remap_matrix ; wts
latStart= doubletofloat( fP->dst_grid_center_lat(0) )*57.29578
lonStart= doubletofloat( fP->dst_grid_center_lon(0) )*57.29578
end if
dim_wts = dimsizes(map_wts)
nlink = dim_wts(0)
nwt = dim_wts(1)
dim_dst = fP->dst_grid_dims ; size destination grid
mlon = dim_dst(0) ; eg: 192 for T63
nlat = dim_dst(1) ; eg: 94 for T63
;********************************************************************
; read the correct rotation angles
;********************************************************************
rotFile = create_rotPopFileName (gridSrc, gridDst )
;print (rotFile)
gP = addfile(rotFile,"r")
rotaName = (/"ANGLE", "angle", "UTAN", "utan" \
,"ROTA", "rota" , "ROTANG", "rotang" /)
do i=0,dimsizes(rotaName)-1
if (isfilevar(gP,rotaName(i))) then
rot = ndtooned( gP->$rotaName(i)$)
break ; exit the loop
end if
end do
if (isatt(u,"missing_value") .and. .not. isatt(u,"_FillValue")) then
uvmsg = u@missing_value
else
if (isatt(u,"_FillValue")) then
uvmsg = u@_FillValue
else
uvmsg = new ( 1, typeof(u) )
uvmsg = 1.e30 ; create msg val
end if
end if
if (.not.isatt(u,"_FillValue")) then ; force common msg val
u@_FillValue = uvmsg ; NCL looks for _FillValue
v@_FillValue = uvmsg ; NCL looks for _FillValue
end if
gridChar = stringtochar (gridSrc)
gridSrcType= gridSrc
; gridSrcType= chartostring(gridChar(0:2)); ex: "POP
; REMAP
; uvNew will have extra dim
types = (/"POP","gx3","gx3p","gx1v2","gx1v3", "gx1v4", "gx1v5", "gx1v6",\
"gx3v3", "gx3v4", "gx3v5", "gx3v6", "gx3v7", "crx3", "tx0.1v2"/)
;print(gridSrcType)
;print(types)
if (nDu.eq.2) then
uvNew = new ( (/2, nlat,mlon/), typeof(u), uvmsg )
if (any(gridSrcType .eq. types)) then
uvNew = preRotate_PopLatLon2D \
(u,v,rot,nlat, mlon, map_wts, dst_add, src_add, uvmsg)
else
uvNew = postRotate_PopLatLon2D \
(u,v,rot,nlat, mlon, map_wts, dst_add, src_add, uvmsg)
; printVarSummary(uvNew)
end if
end if ; nDu=2
if (nDu.eq.3) then
uvNew = new ( (/2, dim_u(0), nlat,mlon/), typeof(u), uvmsg )
do n=0,dim_u(0)-1
if (any(gridSrcType.eq.types)) then
uvNew(:,n,:,:) = preRotate_PopLatLon2D \
(u(n,:,:),v(n,:,:),rot,nlat, mlon \
,map_wts, dst_add, src_add, uvmsg)
else
uvNew(:,n,:,:) = postRotate_PopLatLon2D \
(u(n,:,:),v(n,:,:),rot,nlat, mlon \
,map_wts, dst_add, src_add, uvmsg)
end if
end do
if (.not.ismissing(u!0)) then ; if coord present copy
uvNew!1 = u!0
if (iscoord(u,u!0)) then
uvNew&$u!0$ = u&$u!0$
end if
end if
end if ; nDu=3
if (nDu.eq.4) then
uvNew = new ( (/2, dim_u(0), dim_u(1) ,nlat,mlon/), typeof(u), uvmsg )
do n=0,dim_u(0)-1
do i=0,dim_u(1)-1
if (any(gridSrcType.eq.types)) then
uvNew(:,n,i,:,:) = preRotate_PopLatLon2D \
(u(n,i,:,:),v(n,i,:,:),rot,nlat, mlon \
,map_wts, dst_add, src_add, uvmsg)
else
uvNew(:,n,i,:,:) = postRotate_PopLatLon2D \
(u(n,i,:,:),v(n,i,:,:),rot,nlat, mlon \
,map_wts, dst_add, src_add, uvmsg)
end if
end do
end do
do n=0,1
if (.not.ismissing(u!n)) then ; if coord present copy
uvNew!(n+1) = u!n
if (iscoord(u,u!n)) then
uvNew&$u!n$ = u&$u!n$
end if
end if
end do
end if ; nDu=4
uvNew!0 = "component" ; generic names
uvNew&component = (/0,1/) ; index coord dim (not needed)
copy_VA_pop (u, uvNew) ; copy atttributes
uvNew@_FillValue = uvmsg
if (isatt(uvNew,"missing_value")) then
delete(uvNew@missing_value)
end if
uvNew@missing_value = uvmsg
uvNew@long_name = "velocity components" ; generic name
; add info on operation performed
if (isatt(fP,"map_method")) then
uvNew@spatial_op = fP@map_method + "; 1st order"
else
uvNew@spatial_op = "Unknown remapping"
end if
if (isatt(fP,"normalization")) then
uvNew@spatial_op = uvNew@spatial_op +"; "+fP@normalization
end if
uvNew@spatial_op = uvNew@spatial_op +"; NCL; "+rmpFile
PopCoord (uvNew, gridDst, latStart, lonStart) ; add lat/lon [grid point] coord variables
print (" ")
return( uvNew) ; return as array with one additional dimension
end
;-------------------------------------------------------
undef ("PopLatLonV2")
function PopLatLonV2(u:numeric , v:numeric, rotin:numeric \
,gridSrc:string, gridDst:string \
,method:string, areaType:string )
; Regrid a vector from one grid to the other
; EG: xOut = PopLatLonV(xPOP23, "gx1v2" , "T62", "bilin", "da", ""))
; EG: xOut => xOut( 94,192)[lat,lon]
; EG: xPOP = PopLatLonV(xOut , "T62", "gx3", "aave", "da", "010808" )
; EG: xPOP => xPOP( ny, nx)
local rmpFile, fP, gP, dim_u, dim_src, dst_add \
, src_add, map_wts, dim_wts, nlink, nwt, dim_dst, mlon, nlat \
, latStart, lonStart, u_1D, v_1D, gP, rot, gridChar, gridSrcTyp \
, uWRK_1D, vWRK_1D, uNew_1D, vNew_1D, uvNew, u_atts, i
begin
print (" ")
rmpFile = create_rmpPopFileName2(gridSrc, gridDst, method, areaType )
fP = addfile(rmpFile,"r")
dim_u = dimsizes( u ) ; consistency check
nDu = dimsizes( dim_u ) ; rank [# dimensions]
dim_src = fP->src_grid_dims ; size source grid
if (dim_u(nDu-2).ne.dim_src(1) .or. dim_u(nDu-1).ne.dim_src(0)) then
print ("PopLatLonV2: Input and Tranform do not match")
print ("PopLatLonV2: -----Dimension mismatch--------")
print ("PopLatLonV2: dim_x(nDx-2)="+dim_x(nDx-2) )
print ("PopLatLonV2: dim_x(nDx-1)="+dim_x(nDx-1) )
print ("PopLatLonV: dim_src(1)="+dim_src(1) )
print ("PopLatLonV2: dim_src(0)="+dim_src(0) )
exit
end if
;*******************************************************
; determine which type of convention the weight file was
; written out in.
; for NCAR CSM models we want CSM, for PCM models we expect
; SCRIP
;*******************************************************
if (isfilevar(fP, "row")) then
convention = "CSM"
else
if (isfilevar(fP, "remap_matrix")) then
convention = "SCRIP"
else
print ("PopLatLon2: don't know which convention")
print ("PopLatLon2: weight file="+rmpFile)
exit
end if
end if
if (convention.eq."CSM") then
dst_add = fP->row ; destination grid [linear]
src_add = fP->col ; source grid [linear]
s = fP->S ; wts [fortran indexing]
dims = dimsizes(s) ; size of each dimension
ranks = dimsizes(dims) ; rank [# dimensions]
if (ranks.eq.1) then
map_wts = new ( (/ dims(0),1/), typeof(s))
map_wts(:,0) = s
else
map_wts = new ( (/dims(1)+1,dims(0)/), typeof(s))
map_wts = s
end if
delete (s)
yc_b0 = fP->yc_b(0)
xc_b0 = fP->xc_b(0)
if (.not.isatt(yc_b0, "units")) then
latStart= doubletofloat( yc_b0 )*57.29578
lonStart= doubletofloat( xc_b0 )*57.29578
else
latStart= doubletofloat( yc_b0 )
lonStart= doubletofloat( xc_b0 )
end if
else ; for SCRIP convention
dst_add = fP->dst_address ; destination grid [linear]
src_add = fP->src_address ; source grid [linear]
map_wts = fP->remap_matrix ; wts
latStart= doubletofloat( fP->dst_grid_center_lat(0) )*57.29578
lonStart= doubletofloat( fP->dst_grid_center_lon(0) )*57.29578
end if
dim_wts = dimsizes(map_wts)
nlink = dim_wts(0)
nwt = dim_wts(1)
dim_dst = fP->dst_grid_dims ; size destination grid
mlon = dim_dst(0) ; eg: 192 for T63
nlat = dim_dst(1) ; eg: 94 for T63
rot = ndtooned(rotin)
if (isatt(u,"missing_value") .and. .not. isatt(u,"_FillValue")) then
uvmsg = u@missing_value
else
if (isatt(u,"_FillValue")) then
uvmsg = u@_FillValue
else
uvmsg = new ( 1, typeof(u) )
uvmsg = 1.e30 ; create msg val
end if
end if
if (.not.isatt(u,"_FillValue")) then ; force common msg val
u@_FillValue = uvmsg ; NCL looks for _FillValue
v@_FillValue = uvmsg ; NCL looks for _FillValue
end if
gridChar = stringtochar (gridSrc)
gridSrcType= gridSrc
; gridSrcType= chartostring(gridChar(0:2)); ex: "POP
; REMAP
; uvNew will have extra dim
types = (/"POP","gx3","gx3p","gx1v2","gx1v3", "gx1v4", "gx1v5", "gx1v6",\
"gx3v3", "gx3v4", "gx3v5", "gx3v6", "gx3v7", "crx3", "tx0.1v2"/)
;print(gridSrcType)
;print(types)
if (nDu.eq.2) then
uvNew = new ( (/2, nlat,mlon/), typeof(u), uvmsg )
if (any(gridSrcType .eq. types)) then
uvNew = preRotate_PopLatLon2D \
(u,v,rot,nlat, mlon, map_wts, dst_add, src_add, uvmsg)
else
uvNew = postRotate_PopLatLon2D \
(u,v,rot,nlat, mlon, map_wts, dst_add, src_add, uvmsg)
; printVarSummary(uvNew)
end if
end if ; nDu=2
if (nDu.eq.3) then
uvNew = new ( (/2, dim_u(0), nlat,mlon/), typeof(u), uvmsg )
do n=0,dim_u(0)-1
if (any(gridSrcType.eq.types)) then
uvNew(:,n,:,:) = preRotate_PopLatLon2D \
(u(n,:,:),v(n,:,:),rot,nlat, mlon \
,map_wts, dst_add, src_add, uvmsg)
else
uvNew(:,n,:,:) = postRotate_PopLatLon2D \
(u(n,:,:),v(n,:,:),rot,nlat, mlon \
,map_wts, dst_add, src_add, uvmsg)
end if
end do
if (.not.ismissing(u!0)) then ; if coord present copy
uvNew!1 = u!0
if (iscoord(u,u!0)) then
uvNew&$u!0$ = u&$u!0$
end if
end if
end if ; nDu=3
if (nDu.eq.4) then
uvNew = new ( (/2, dim_u(0), dim_u(1) ,nlat,mlon/), typeof(u), uvmsg )
do n=0,dim_u(0)-1
do i=0,dim_u(1)-1
if (any(gridSrcType.eq.types)) then
uvNew(:,n,i,:,:) = preRotate_PopLatLon2D \
(u(n,i,:,:),v(n,i,:,:),rot,nlat, mlon \
,map_wts, dst_add, src_add, uvmsg)
else
uvNew(:,n,i,:,:) = postRotate_PopLatLon2D \
(u(n,i,:,:),v(n,i,:,:),rot,nlat, mlon \
,map_wts, dst_add, src_add, uvmsg)
end if
end do
end do
do n=0,1
if (.not.ismissing(u!n)) then ; if coord present copy
uvNew!(n+1) = u!n
if (iscoord(u,u!n)) then
uvNew&$u!n$ = u&$u!n$
end if
end if
end do
end if ; nDu=4
uvNew!0 = "component" ; generic names
uvNew&component = (/0,1/) ; index coord dim (not needed)
copy_VA_pop (u, uvNew) ; copy atttributes
uvNew@_FillValue = uvmsg
if (isatt(uvNew,"missing_value")) then
delete(uvNew@missing_value)
end if
uvNew@missing_value = uvmsg
uvNew@long_name = "velocity components" ; generic name
; add info on operation performed
if (isatt(fP,"map_method")) then
uvNew@spatial_op = fP@map_method + "; 1st order"
else
uvNew@spatial_op = "Unknown remapping"
end if
if (isatt(fP,"normalization")) then
uvNew@spatial_op = uvNew@spatial_op +"; "+fP@normalization
end if
uvNew@spatial_op = uvNew@spatial_op +"; NCL; "+rmpFile
PopCoord (uvNew, gridDst, latStart, lonStart) ; add lat/lon [grid point] coord variables
print (" ")
return( uvNew) ; return as array with one additional dimension
end
;----------------------------------------------------------------------
undef("POPlonReorderGM")
function POPlonReorderGM (x:numeric)
; force reorder so that the longitudes run from GM eastward
local lon, ind360, ind0, indGM, nInd, indLast, n, nEnd, flag, temp, nDim
begin
lon = (/ x&lon /) ; local lon
; chk to see if reordering is necessary
if (any(lon.ge.360) .or. any(lon.lt.0) ) then
temp = x ; variable-to-variable transfer
nDim = dimsizes(dimsizes(x)) ; rank of x
if (nDim.gt.5) then
print ("popRemap: POPlonReorderGM: too many dimensions")
exit
end if
if (any(lon.ge.360)) then
flag = 360
ind360 = ind(lon.ge.360.) ; indices >= 360
nInd = dimsizes(ind360) ; # elements >= 360
indGM = ind360(0) ; nominal GM (1st index)
indLast = ind360(nInd-1) ; last index
nEnd = indLast
else
flag = 0
ind0 = ind(lon.lt.0)
nInd = dimsizes(ind0) ; # elements < 0
indGM = nInd ; index nominal GM
indLast = dimsizes(lon)-1 ; last index
nEnd = indGM-1
end if
n = indLast-indGM
if (nDim.eq.2) then
temp(:,0:n) = (/ x(:,indGM:indLast) /)
temp(:,n+1:nEnd) = (/ x(:,0:indGM-1) /)
end if
if (nDim.eq.3) then
temp(:,:,0:n) = (/ x(:,:,indGM:indLast) /)
temp(:,:,n+1:nEnd) = (/ x(:,:,0:indGM-1) /)
end if
if (nDim.eq.4) then
temp(:,:,:,0:n) = (/ x(:,:,:,indGM:indLast) /)
temp(:,:,:,n+1:nEnd) = (/ x(:,:,:,0:indGM-1) /)
end if
if (nDim.eq.5) then
temp(:,:,:,:,0:n) = (/ x(:,:,:,:,indGM:indLast) /)
temp(:,:,:,:,n+1:nEnd) = (/ x(:,:,:,:,0:indGM-1) /)
end if
if (flag.eq.360) then
temp&lon(0:n) = (/ lon(indGM:indLast)-360. /)
temp&lon(n+1:nEnd) = (/ lon(0:indGM-1) /)
else
temp&lon(0:n) = (/ lon(indGM:indLast) /)
temp&lon(n+1:nEnd) = (/ lon(0:indGM-1)+360. /)
end if
return(temp) ; return reordered array + coord var
end if ; "any" >=360 or <0
return (x) ; nothing changed
end
;-------------------------------------------------------
undef("latLon2Pop_LinearIntS")
function latLon2Pop_LinearIntS (x:numeric, dst_type:string)
; use bilinear interpolation to interpolate from a
; conventional lat/lon grid to a POP X1 or X3 grid.
; use only for scalars
; usage assume "s" is (time,depth,lat,lon)
; s_X1 = latLon2Pop_LinearIntS ( s, "POPX1") ==> (time,depth,320,384)
; t_X3 = latLon2Pop_LinearIntS ( temp, "POPX3") ==> (time,depth,116,100)
local dimx, nDim, lon, lat, f, lon_pop, lat_pop, ny, nx, \
x_tmp, x_pop, i, x_atts, dirENV, dirPOP
begin
dimx = dimsizes(x)
nDim = dimsizes(dimx)
lon = x&lon ; should be degrees
lat = x&lat
if (isatt(lon,"units") .and. lon@units.ne."degrees_east") then
if (lon@units.eq."radians") then
lon = lon*57.29578
lon@units = "degrees_east"
else
print ("popRemap: latLon2Pop_LinearIntS: lon must be degrees_east")
exit
end if
end if
if (isatt(lat,"units") .and. lat@units.ne."degrees_north") then
if (lat@units.eq."radians") then
lat = lat*57.29578
lat@units = "degrees_north"
else
print ("popRemap: latLon2Pop_LinearIntS: lat must be degrees_north")
exit
end if
end if
dirENV = getenv("NCL_POP_REMAP")
if (ismissing(dirENV)) then
dirPOP = "./" ; local only
else
dirPOP = dirENV + "/"
end if
; get two-dimensional lat and lon coordinates from a X1 or X3 file
if (dst_type.eq."POPX1") then
;f = addfile ("/fs/cgd/data0/shea/pop/rmp_OneD_to_POPX1_C.nc","r")
f = addfile (dirPOP+"rmp_OneD_to_POPX1_C.nc","r")
lon_pop = f->dst_grid_center_lon ; this is one-dim
lat_pop = f->dst_grid_center_lat
ny = 320
nx = 384
end if
if (dst_type.eq."POPX3") then
;f = addfile ("/fs/cgd/data0/shea/pop/rmp_OneD_to_POPX3_B_CSM.nc","r")
f = addfile (dirPOP+"rmp_OneD_to_POPX3_B_CSM.nc","r")
lon_pop = f->xc_b ; this is one-dim
lat_pop = f->yc_b
ny = 116
nx = 100
end if
if (isatt(lon_pop,"units") .and. lon_pop@units.eq."radians") then
lon_pop = lon_pop*57.29578
lat_pop = lat_pop*57.29578
lon_pop@units = "degrees_east"
lat_pop@units = "degrees_north"
end if
; perform the interpolation and reshape the grid
x_tmp = linint2_points (lon,lat, x ,True, lon_pop, lat_pop, 0)
dimx(nDim-2) = ny
dimx(nDim-1) = nx
x_pop = onedtond( x_tmp , dimx )
delete (x_tmp) ; no longer needed
; if more than two dimensions copy other dimension related info
if (nDim.gt.2) then
do i=0,nDim-3 ; do not use last two dimensions
if (.not.ismissing(x!i) ) then
x_pop!i = x!i
if (iscoord(x,x!i))
x_pop&$x_pop!i$ = x&$x!i$
end if
end if
end do
end if
; name the last two dimensions
x_pop!(nDim-2) = "lati" ; arbitrary
x_pop!(nDim-1) = "loni" ; dimension names
lati = ispan(0,ny-1,1)
lati@long_name = "latitude index"
x_pop&lati = lati
loni = ispan(0,nx-1,1)
loni@long_name = "longitude index"
x_pop&loni = loni
x_atts = getvaratts(x) ; copy attributes of input variable
if (.not.all(ismissing(x_atts))) then
do i=0,dimsizes(x_atts)-1
x_pop@$x_atts(i)$ = x@$x_atts(i)$
end do
end if
x_pop@info = "popRemap: latLon2Pop_LinearIntS used for interpolation"
return (x_pop)
end
|