Description Usage Arguments Value Author(s) References Examples
'et0' estimates evapotranspiration based on FAO Penman-Monteith equation
1 |
Tmax |
Vector of length n containing daily maximum temperature [C]. |
Tmin |
Vector of length n containing daily minumum temperature [C]. |
vap_pres |
Vector of length n of mean daily vapour pressure [kPa]. |
sol_rad |
Vector of length n of daily solar radiation [MJm-2d-1]. |
tal |
Clear sky transmissivity [0-1]. |
z |
Altitude above the sea level [m]. |
uz |
Wind speed measured at heith 'meah' [ms-1]. |
meah |
The height (above the ground level) of the wind speed measurement [m]. |
extraT |
Optional. Vector of length n of extraterrestrial solar radiation [MJm-2d-1]. If 'NA' then it is calculated by the function. Providing extraterrestrial solar radiation speeds up the computation. |
days |
Required only if extraT=NA. Vector of class 'Date' of length n. |
lat |
Required only if extraT=NA. Latitude in decimal degrees. |
Vector of length n of daily reference evapotranspiration. [mmd-1]
Jedrzej S. Bojanowski
Allen, R.G., L.S. Pereira, D. Raes, and M. Smith. 1998. Crop Evapotranspiration: Guidelines for computing crop water requirements. Irrigation and Drainage Paper 56, Food and Agriculture Organization of the United Nations, Rome, pp. 300.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 | data(Metdata)
tmax <- Metdata$meteo$TEMP_MAX
tmin <- Metdata$meteo$TEMP_MIN
vpres <- Metdata$meteo$VAP_PRES
days <- Metdata$meteo$DAY
lat <- Metdata$LATITUDE
rad_mea <- Metdata$meteo$RAD_MEA
z <- Metdata$ALTITUDE
wind <- Metdata$meteo$WIND_10
tal <- cst(rad_mea,dayOfYear(Metdata$meteo$DAY),radians(Metdata$LATITUDE))
et0(Tmax=tmax,Tmin=tmin, vap_pres=vpres,sol_rad=rad_mea,tal=tal,z=Metdata$ALTITUDE,
uz=wind,meah=10,extraT=NA,days=days,lat=lat)
|
[1] 0.093584039 0.758724065 0.229489021 0.715499137 0.436485588
[6] 0.501881088 0.473089093 1.986900344 0.678340399 0.448545382
[11] 0.775637393 0.610724177 0.383732183 0.216833092 0.589215891
[16] 0.290104558 0.591256703 1.048488041 0.419515871 0.577133431
[21] 0.522369529 0.439285964 0.150448016 0.151788839 0.246063991
[26] 0.067712395 0.015629297 0.868592500 0.301138152 0.108985026
[31] 0.332742357 0.840260817 0.522328819 0.544833600 0.481216268
[36] 0.091929333 0.253870412 0.685132317 0.696798876 0.822293238
[41] 0.626430168 0.585493399 0.551899451 0.206876773 0.467978587
[46] 0.270109979 0.642829208 0.682936429 0.232472110 0.347355365
[51] 0.421662627 1.503364222 0.930380400 0.666931133 0.218138784
[56] 0.472132588 0.815660774 0.567932176 0.968717509 0.626201341
[61] 0.616629142 0.913666139 0.950749355 0.834068994 0.806999982
[66] 0.764443088 0.696984636 1.007618925 0.572023082 0.745579807
[71] 0.657118176 1.337831775 1.373693680 1.588169572 2.562157476
[76] 1.190605027 1.589288090 0.607843983 0.681294816 0.539630040
[81] 1.354347621 1.562026435 1.853841901 1.793226952 2.328568673
[86] 2.760060753 3.376586887 3.592716883 1.887869754 2.098346647
[91] 1.771112920 1.551804988 2.007074178 0.971508695 2.695743709
[96] 2.546834152 0.870704685 1.122458730 2.980806238 2.795634222
[101] 2.919977787 1.960957952 3.074582851 2.872287650 2.680360202
[106] 1.696869735 2.727906793 3.018337159 3.014521756 2.971302093
[111] 0.922057260 3.288793400 1.837087655 2.287902545 1.994198904
[116] 3.047065756 2.290312886 2.149575516 2.850705395 2.584083880
[121] 1.727693345 2.021708643 2.036614313 2.120536881 2.332231049
[126] 2.729046530 2.888046543 3.035099163 2.238869767 2.880484348
[131] 3.192457561 3.571302789 2.276134883 2.924667114 4.055366056
[136] 3.305900157 3.358626970 2.857027413 5.387403221 4.865213793
[141] 6.923361875 4.540243650 2.639800087 2.310955117 2.304916297
[146] 0.929946206 3.307931356 1.738528491 2.386523517 3.327830727
[151] 4.292008341 4.100575150 3.599175941 3.527269058 2.647723210
[156] 2.964914332 2.642478850 4.473506545 4.924348977 3.310754068
[161] 2.380631596 4.853378569 5.066804112 5.561126809 5.606425217
[166] 4.874597803 5.325160789 4.381830488 3.281906869 4.300739193
[171] 4.487123021 4.728635116 5.083305198 3.136831707 4.138826531
[176] 2.696871910 6.346840712 2.065768074 3.340815362 3.875749517
[181] 5.267626552 5.837396111 5.642411972 6.117259405 4.358454237
[186] 3.327351517 4.259418481 3.334235046 2.352252009 2.518281817
[191] 2.973052166 3.128968558 0.593265906 3.558592046 2.177514142
[196] 3.115322810 3.373963110 3.142418342 2.608458309 3.931798165
[201] 2.938560812 2.253376680 2.861164359 1.945830318 2.924322984
[206] 3.407297268 1.455075370 2.725298667 2.844440795 2.051177835
[211] 2.436476078 1.573182211 1.302928112 2.319168938 2.658963939
[216] 1.786901348 3.361615146 2.190419025 2.154321003 3.936806310
[221] 4.521852252 2.717138262 3.299380632 4.056995482 2.053931899
[226] 3.164223889 2.019579358 2.468236341 2.084842989 3.630671691
[231] 3.359470292 4.284266571 2.561223587 2.820394538 3.535147354
[236] 3.598458418 3.281973494 3.468099251 1.452761713 2.986050652
[241] 1.379667475 2.460559201 2.436091318 1.879307151 1.901321597
[246] 2.091058537 0.919975287 1.239627692 2.328969442 2.008568227
[251] 1.924313612 2.299342260 1.768986560 1.849420847 1.412248432
[256] 1.120373689 1.466694128 1.086667647 1.629568919 1.126638632
[261] 1.478789780 1.179110343 1.381859735 1.280771235 1.459735075
[266] 1.512651126 1.476317456 1.037047381 1.255992542 1.752329646
[271] 1.781016024 1.576142433 0.788781926 1.230232335 1.121014836
[276] 0.819279061 0.870721412 1.419774259 0.925268422 0.569534987
[281] 0.867752738 0.347255059 -0.086186362 0.909009010 0.948955829
[286] 1.185563654 1.017926691 1.031621974 1.146288307 0.904685823
[291] 0.398288502 0.782549829 0.966997292 0.807994680 0.821354221
[296] 0.672500813 0.542417600 0.637502439 0.302962847 0.877445762
[301] 0.408580372 0.557694593 1.101047237 0.484145139 0.175341494
[306] 0.264890506 0.220685809 0.493222677 0.119589770 0.204378460
[311] 0.195645344 0.461623795 0.148263861 0.383023393 0.412017123
[316] 0.193063133 0.095392850 0.127747432 0.258839273 0.347215553
[321] 0.146629393 0.119126179 0.210544098 0.137679994 0.143221447
[326] 0.129107006 -0.019552915 -0.321432030 0.512647807 0.098906654
[331] 0.657461241 0.698212638 0.034616555 0.095414650 0.113145304
[336] 0.444247045 -0.134498825 0.210929268 0.070852524 0.641654700
[341] 0.149847152 0.108269926 0.256770409 0.322341260 0.141198338
[346] 0.311821113 0.208732953 0.234446767 0.056130925 0.127286552
[351] 0.327580596 0.356294801 0.358836668 0.262268918 0.104593661
[356] 0.165991896 0.426356957 0.017580170 0.103732132 0.214853797
[361] 0.195636834 0.174086208 0.290729617 0.224628819 0.141278397
[366] 0.220999032 0.586122055 0.389288034 0.398770017 0.423933804
[371] 0.164457712 0.484822357 0.186808335 -0.007793673 0.161623498
[376] 0.289107358 0.367866442 0.482119291 0.351831537 0.456428507
[381] 0.305504291 0.471786169 0.532608193 0.488212530 0.752991016
[386] 0.561266485 0.483639834 0.275365626 0.299190417 0.459175613
[391] 0.498901884 0.299992981 0.415728918 0.551424615 0.785786942
[396] 0.315088117 0.785243797 0.578746948 0.957742624 0.782692966
[401] 0.457532714 0.296580833 0.243464551 0.393059738 0.268129388
[406] 0.558127035 0.427928916 0.749879590 0.880630004 0.858973597
[411] 0.673352408 0.889328790 0.873310100 0.786337002 0.762982730
[416] 0.480267045 0.723939640 0.715375909 0.966284881 0.870262876
[421] 1.461030720 1.243173702 1.253750141 1.079226462 1.677948599
[426] 0.753740097 0.451317047 1.107469519 1.957310968 1.186543825
[431] 0.446773727 1.220426272 0.839487708 0.754693723 1.455459384
[436] 1.419173833 1.621301299 1.082690982 2.129972512 1.465425544
[441] 1.168547200 1.754915714 1.512319883 0.953178327 1.480451023
[446] 1.899572904 2.419028689 2.494665136 2.297644219 2.148133639
[451] 2.152292331 1.873700852 1.726491488 1.585747043 1.250050448
[456] 2.405014291 2.253926949 1.719557113 1.587016762 2.999879265
[461] 3.129681694 4.679501262 4.168011755 4.499744189 3.782518731
[466] 4.025624922 4.738630127 4.834974557 5.024335897 5.190967373
[471] 4.304244089 3.254696639 3.180379872 2.690573916 1.291072208
[476] 2.102472392 2.162041445 1.578977517 1.461988173 2.167195238
[481] 2.486500103 2.397295841 2.211484264 3.294247029 2.926456370
[486] 1.636577964 2.036559502 3.244923630 2.861763334 3.679926206
[491] 3.110829237 3.771233715 3.670416668 4.683669121 4.701231139
[496] 4.753789738 6.109876437 6.403610652 6.294159792 3.869625015
[501] 3.200336523 2.370947574 2.493361654 4.218022121 4.342628766
[506] 1.913344232 4.257112718 3.623619596 4.499772753 2.647186265
[511] 2.186561668 3.531241268 3.852696645 4.781125863 4.803302225
[516] 6.093254008 5.993257816 6.284922603 6.152015115 5.445217197
[521] 5.561214311 3.214984280 3.327856659 4.393885564 3.397764929
[526] 4.594771945 5.604271688 5.000517454 5.420483496 5.384553050
[531] 5.856362572 6.051525646 5.584195848 4.325358155 5.533557818
[536] 5.125184465 4.197372637 5.272206801 5.583257972 5.644110380
[541] 5.206283622 3.492422077 3.220819201 3.523865423 3.909498258
[546] 4.360889890 3.411375900 2.918578402 4.235680559 4.749313033
[551] 5.335510550 4.461978458 3.958722932 3.003028258 2.758719948
[556] 2.974551332 2.246579336 1.737705670 1.191199506 1.908330652
[561] 3.325526986 2.857923349 2.053304133 3.510957218 2.783223886
[566] 2.605567598 2.561853992 2.988615262 2.248587421 2.628418423
[571] 2.640963205 2.125477313 1.816063938 2.771078371 2.594208597
[576] 1.295549742 2.901027939 1.719512918 2.987102255 3.024419376
[581] 2.760845832 3.079608103 1.876301214 1.817802173 3.238718500
[586] 3.225975504 3.048040023 3.154577041 3.158654466 2.568703133
[591] 2.473643278 1.748162537 1.749344817 2.369537888 2.863519247
[596] 3.236190670 2.780212746 2.614072599 2.330686510 1.247898237
[601] 1.682857884 1.554396757 1.709361055 1.825401685 1.218430203
[606] 1.427044671 1.259833467 1.704786459 1.203111584 0.927190743
[611] 1.171198378 0.977695580 1.329620385 0.888698629 0.696626402
[616] 0.924609756 0.963774880 0.943207001 1.205679669 0.686791176
[621] 0.826253997 0.555324483 1.101847344 1.139006191 0.683820823
[626] 0.810196871 1.234695681 2.143271405 0.474236507 1.100856683
[631] 0.353974373 1.158524707 1.275727310 0.752147002 0.583999267
[636] 0.385120567 0.673757503 0.820983988 1.066351287 0.411158890
[641] 0.881307211 0.735386239 0.923557183 0.722666431 0.772133698
[646] 0.624334066 0.420663237 0.793811552 0.742336537 0.775134428
[651] 0.366297266 0.263020890 0.570961552 0.412774273 0.520984917
[656] 1.092365985 0.921833900 0.389397298 0.231335064 0.623767805
[661] 0.370783718 0.420770785 0.684663186 0.472492067 0.833074890
[666] 0.697590631 1.198346623 0.722263780 0.751862632 0.592842197
[671] 0.452567747 0.369457215 0.471451218 0.966643789 1.219609922
[676] 0.432809559 0.272726439 0.229512797 0.595417073 0.572714662
[681] 0.485972506 0.218094822 0.450629720 0.375838758 0.542408784
[686] 0.262467977 0.176265245 0.884987766 0.569199415
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