Santa Rita Grassland, Arizona, USA

Name value
Principal investigator Russell Scott
Site name Santa Rita Grassland, Arizona, USA
IGBP vegetation type Grasslands
Latitude 31.78938
Longitude -110.82768
Elevation 1291
crdate 06MAR2016


 
Santa Rita Grassland, Arizona, USA
input files and their date ranges

Obs OrigFile mindate maxdate nrec
1 US-SRG_2008-20151130.csv 12/31/2007 12/31/2008 17568
2 US-SRG_2009-20151130.csv 12/31/2008 12/31/2009 17520
3 US-SRG_2010-20151130.csv 12/31/2009 12/31/2010 17520
4 US-SRG_2011-20151130.csv 12/31/2010 12/31/2011 17520
5 US-SRG_2012-20160229.csv 12/31/2011 12/31/2012 17568
6 US-SRG_2013-20151130.csv 12/31/2012 12/31/2013 17520
7 US-SRG_2014-20151130.csv 12/31/2013 12/31/2014 17520
8 US-SRG_2015-20160229.csv 12/31/2014 12/31/2015 17520


 
Santa Rita Grassland, Arizona, USA
variable names and original descriptions

VarSource=US-SRG_2008-20151130.csv-2015, AMERIFLUX_HEADER_US-SRG-20160229.xlsx

Obs col Variable Origdesc
1 3 Rn Rn net radiation W m-2
2 4 FG G ground heat flux W m-2
3 5 LE LE Latent Heat Flux W m-2, WPL terms added to LE and FC
4 6 H H_sonic Sensible Heat flux W m-2, Sensible heat flux corrected ala Shohantus
5 7 FC FC CO2 flux mg m-2 s-1, WPL terms added to FC but U* filtering not applied
6 8 UST u* friction velocity m s-1
7 9 SFC SFC Change in [CO2] between instrument and ground mg m-2 s-1
8 10 CO2den [co2] concentration mg m-3
9 11 H2Oden [h2o] g m-3
10 12 Tsonic tsonic sonic temperature deg C
11 13 PRESS Irga_pressure air pressure kPA
12 14 TA thmp_3m air temperature deg C
13 15 VP vap.Pressure_3m vapor pressure kPA
14 16 WS wind speed, 3 meters m s-1
15 17 WD wind dir., 3 m degrees from N
16 18 PREC precip., mm
17 19 Rg Srad In solar radiometer W m-2
18 20 RgOut Srad Out W m-2
19 21 Rgl LW In W m-2
20 22 RglOut LW out W m-2
22 24 PAR PPFD_in photosynthetic photon flux density micromoles m-2 s-1
23 25 PARout PPFD_out micromoles m-2 s-1
24 26 SWC east pit VWC, volumetric soil moisture from the eastern location, 2.5-5 cm depth cm3/cm3
25 27 SWC_10 east pit VWC, volumetric soil moisture from the eastern location, 5-10 cm depth cm3/cm3
26 28 SWC_20 east pit VWC, volumetric soil moisture from the eastern location, 15-20 cm depth cm3/cm3
27 29 SWC_30 east pit VWC, volumetric soil moisture from the eastern location, 25-30 cm depth cm3/cm3
28 30 SWC_50 east pit VWC, volumetric soil moisture from the eastern location, 40-50 cm depth cm3/cm3
29 31 SWC_75 east pit VWC, volumetric soil moisture from the eastern location, 75 cm depth cm3/cm3
30 32 SWC__2 west pit VWC, volumetric soil moisture from the western location, 2.5-5 cm depth cm3/cm3
31 33 SWC__2_10 west pit VWC, volumetric soil moisture from the western location, 5-10 cm depth cm3/cm3
32 34 SWC__2_20 west pit VWC, volumetric soil moisture from the western location, 15-20 cm depth cm3/cm3
33 35 SWC__2_30 west pit VWC, volumetric soil moisture from the western location, 25-30 cm depth cm3/cm3
34 36 SWC__2_50 west pit VWC, volumetric soil moisture from the western location, 40-50 cm depth cm3/cm3
35 37 TS east pit soil temperature, 4 cm depth deg C
36 38 TS_8 east pit soil temperature, 8 cm depth deg C
37 39 TS_18 east pit soil temperature, 18 cm depth deg C
38 40 TS_28 east pit soil temperature, 28 cm depth deg C
39 41 TS_45 east pit soil temperature, 45 cm depth deg C
40 42 TS_75 east pit soil temperature, 75 cm depth deg C
41 43 TS__2 west pit soil temperature, 4 cm depth deg C
42 44 TS__2_8 west pit soil temperature, 8 cm depth deg C


 
Santa Rita Grassland, Arizona, USA
variable edits

Obs Reset
1 * SANTARITA_GRA reset co2den to missing if 144.25 <=day_of_year<= 149.6042 in 2008, unreasonably low values;
2 * SANTARITA_GRA reset co2den to missing if co2den > 18 mmol/m3;
3 * SANTARITA_GRA reset h to missing if h > 700 W/m2;
4 * SANTARITA_GRA reset h2oden to missing if 144.25 <=day_of_year<= 149.6042 in 2008, unreasonably high values;
5 * SANTARITA_GRA reset h2oden to missing if h2oden > 1200 mmol/m3;
6 * SANTARITA_GRA reset le to missing if le > 650 W/m2;
7 * SANTARITA_GRA reset par to missing if abs(par) > 10 umol/m2/s when solar_elevation < -5 degree;
8 * SANTARITA_GRA reset par to missing if par < -10 or par > 2600 umol/m2/s;
9 * SANTARITA_GRA reset par to missing if par < 10 umol/m2/s when solar_elevation > 20 degree;
10 * SANTARITA_GRA reset parout to missing if abs(parout) > 10 umol/m2/s when solar_elevation < -5 degree;
11 * SANTARITA_GRA reset parout to missing if parout < -10 or parout > 2000 umol/m2/s;
12 * SANTARITA_GRA reset parout to missing if parout < 10 umol/m2/s when solar_elevation > 20 degree;
13 * SANTARITA_GRA reset press to missing if press < 85 kPa;
14 * SANTARITA_GRA reset rg to missing if abs(rg) > 5 W/m2 when solar_elevation < -5 degree;
15 * SANTARITA_GRA reset rg to missing if rg < -5 or rg > 1200 W/m2;
16 * SANTARITA_GRA reset rg to missing if rg < 5 W/m2 when solar_elevation > 20 degree;
17 * SANTARITA_GRA reset rgout to missing if abs(rgout) > 5 W/m2 when solar_elevation < -5 degree;
18 * SANTARITA_GRA reset rgout to missing if rgout < -5 or rgout > 1000 W/m2;
19 * SANTARITA_GRA reset rgout to missing if rgout < 5 W/m2 when solar_elevation > 20 degree;
20 * SANTARITA_GRA reset rn to missing if rn > 200 W/m2 when solar_elevation < -5 degree;
21 * SANTARITA_GRA reset swc__2_30 to missing if swc__2_30 < 0%;
22 * SANTARITA_GRA reset swc__2_50 to missing if swc__2_50 < 0%;
23 * SANTARITA_GRA reset ts to missing if sasdate = 24nov2015 and ts > 20 deg C;
24 * SANTARITA_GRA reset ts to missing if sasdate = 26apr2015 and ts < -5 deg C;
25 * SANTARITA_GRA reset ts_18 to missing if sasdate = 24nov2015 and ts_18 > 20 deg C;
26 * SANTARITA_GRA reset ts_18 to missing if sasdate = 26apr2015 and ts_18 < -5 deg C;
27 * SANTARITA_GRA reset ts_28 to missing if sasdate = 24nov2015 and ts_28 > 20 deg C;
28 * SANTARITA_GRA reset ts_28 to missing if ts_28 < 1 or ts_28 > 34 deg C;
29 * SANTARITA_GRA reset ts_45 to missing if sasdate = 24nov2015 and ts_45 > 20 deg C;
30 * SANTARITA_GRA reset ts_45 to missing if ts_45 < 1 or ts_45 > 32 deg C;
31 * SANTARITA_GRA reset ts_8 to missing if sasdate = 24nov2015 and ts_8 > 20 deg C;
32 * SANTARITA_GRA reset ts_8 to missing if sasdate = 26apr2015 and ts_8 < -5 deg C;
33 * SANTARITA_GRA reset ts__2 to missing if 24nov2015 <=sasdate<= 31dec2015 and ts__2 > 20 deg C;
34 * SANTARITA_GRA reset ts__2 to missing if ts__2 < -5 deg C;
35 * SANTARITA_GRA reset ts__2 to missing if ts__2 < 0 deg C and 8 <= month <= 9;
36 * SANTARITA_GRA reset ts__2_8 to missing if 24nov2015 <=sasdate<= 31dec2015 and ts__2_8 > 20 deg C;
37 * SANTARITA_GRA reset ts__2_8 to missing if ts__2_8 < -5 deg C;
38 * SANTARITA_GRA reset ts__2_8 to missing if ts__2_8 < 0 deg C and 8 <= month <= 9;


 
Santa Rita Grassland, Arizona, USA
number of records reset to missing or other values

Obs variable nreset
1 co2den 73
2 h 2
3 h2oden 62
4 le 3
5 par 64
6 parout 562
7 press 6
8 rg 329
9 rgout 491
10 rn 0
11 swc__2_30 1
12 swc__2_50 1
13 ts 2
14 ts_18 2
15 ts_28 8
16 ts_45 8
17 ts_8 3
18 ts__2 11
19 ts__2_8 4


 
Santa Rita Grassland, Arizona, USA
variable or unit conversions

Obs cline
1 * SANTARITA_GRA convert co2den from mg/m3 to mmol/m3;
2 co2den = co2den/44.0;
3 * SANTARITA_GRA convert fc from mg/m2/s to umol/m2/s;
4 fc = fc*1000.0/44.0;
5 * SANTARITA_GRA convert h2oden from g/m3 to mmol/m3;
6 h2oden = h2oden/18.0*1000;
7 * SANTARITA_GRA convert swc from fraction to percent;
8 swc = swc * 100;
9 * SANTARITA_GRA convert swc_10 from fraction to percent;
10 swc_10 = swc_10 * 100;
11 * SANTARITA_GRA convert swc_20 from fraction to percent;
12 swc_20 = swc_20 * 100;
13 * SANTARITA_GRA convert swc_30 from fraction to percent;
14 swc_30 = swc_30 * 100;
15 * SANTARITA_GRA convert swc_50 from fraction to percent;
16 swc_50 = swc_50 * 100;
17 * SANTARITA_GRA convert swc_75 from fraction to percent;
18 swc_75 = swc_75 * 100;
19 * SANTARITA_GRA convert swc__2 from fraction to percent;
20 swc__2 = swc__2 * 100;
21 * SANTARITA_GRA convert swc__2_10 from fraction to percent;
22 swc__2_10 = swc__2_10 * 100;
23 * SANTARITA_GRA convert swc__2_20 from fraction to percent;
24 swc__2_20 = swc__2_20 * 100;
25 * SANTARITA_GRA convert swc__2_30 from fraction to percent;
26 swc__2_30 = swc__2_30 * 100;
27 * SANTARITA_GRA convert swc__2_50 from fraction to percent;
28 swc__2_50 = swc__2_50 * 100;


 
Santa Rita Grassland, Arizona, USA
calculated or derived variables

Obs cline
1 * SANTARITA_GRA calculate co2 from co2den using press and ta;
2 if press not in (.,0) then co2 = co2den*8.314*(ta+273.15)/press; else co2 = .;
3 * SANTARITA_GRA calculate h2o from h2oden using press and ta;
4 if press not in (.,0) then h2o = h2oden/1000*8.314*(ta+273.15)/press; else h2o = .;
5 * SANTARITA_GRA calculate fh2o from le and ta;
6 fh2o = le/18/(1.91846*((ta+273.15)/(ta+273.15-33.91))*((ta+273.15)/(ta+273.15-33.91)));
7 * SANTARITA_GRA calculate svp from ta;
8 svp=0.61121 * exp((17.502 * ta)/(240.97 + ta));
9 * SANTARITA_GRA calculate rh from vp and svp;
10 rh = (vp/svp)*100;
11 * SANTARITA_GRA calculate vpd from svp and vp;
12 vpd = svp-vp;
13 * SANTARITA_GRA calculate nee from fc, negligible storage term;
14 nee = fc;
15 * SANTARITA_GRA calculate preccum;
16 preccum = ifn(first.year, prec, sum(preccum, prec));


 
Santa Rita Grassland, Arizona, USA
variable statistics for L2 data

Site=Santa Rita Grassland

Obs Variable MIN MEAN MAX N NMISS TOTAL
1 CO2 327.574 388.654 503.67 128408 11848 140256
2 CO2den 11.547 13.961 17.82 128409 11847 140256
3 FC -21.557 -0.168 19.35 122851 17405 140256
4 FG -199.896 1.870 299.91 132748 7508 140256
5 FH2O -1.135 0.728 11.42 124788 15468 140256
6 H -196.795 44.941 506.77 130190 10066 140256
7 H2O 0.002 9.787 33.60 128419 11837 140256
8 H2Oden 0.089 349.211 1195.85 128420 11836 140256
9 LE -49.966 32.020 501.78 124789 15467 140256
10 NEE -21.557 -0.168 19.35 122851 17405 140256
11 PAR -9.963 460.508 2360.93 133781 6475 140256
12 PARout -7.374 65.874 1296.60 113200 27056 140256
13 PREC 0.000 0.023 22.35 133960 6296 140256
14 PRECcum 0.000 174.109 546.36 135767 4489 140256
15 PRESS 85.276 87.214 88.42 132800 7456 140256
16 RH 2.226 36.129 100.00 135316 4940 140256
17 Rg -5.000 240.548 1192.31 131612 8644 140256
18 RgOut -4.429 50.713 570.09 131455 8801 140256
19 Rgl 152.823 312.709 461.06 131913 8343 140256
20 RglOut 252.535 413.978 697.22 131914 8342 140256
21 Rn -160.930 87.710 925.22 131913 8343 140256
22 SFC . . . 0 140256 140256
23 SVP 0.228 2.426 7.28 135656 4600 140256
24 SWC 1.980 7.713 21.84 134375 5881 140256
25 SWC_10 2.140 7.869 19.55 134375 5881 140256
26 SWC_20 7.600 13.681 25.36 134372 5884 140256
27 SWC_30 5.070 8.627 18.06 134371 5885 140256
28 SWC_50 3.590 6.709 14.81 134371 5885 140256
29 SWC_75 7.740 11.532 20.58 135981 4275 140256
30 SWC__2 1.780 7.537 27.84 134361 5895 140256
31 SWC__2_10 3.330 9.954 24.40 134364 5892 140256
32 SWC__2_20 5.000 9.917 23.05 134373 5883 140256
33 SWC__2_30 6.420 9.811 20.47 134370 5886 140256
34 SWC__2_50 5.750 8.786 16.74 134371 5885 140256
35 TA -12.840 18.902 39.74 135656 4600 140256
36 TS -3.679 17.581 49.82 134659 5597 140256
37 TS_18 -1.332 17.736 35.81 134656 5600 140256
38 TS_28 2.063 17.865 31.86 134650 5606 140256
39 TS_45 4.285 17.943 30.00 134650 5606 140256
40 TS_75 7.206 19.656 30.58 136751 3505 140256
41 TS_8 -1.755 17.789 40.57 134658 5598 140256
42 TS__2 -3.452 18.469 55.44 134637 5619 140256
43 TS__2_8 -1.972 18.310 40.35 134647 5609 140256
44 Tsonic -12.762 19.449 38.79 133563 6693 140256
45 UST 0.000 0.288 3.45 133563 6693 140256
46 VP 0.072 0.794 2.71 135342 4914 140256
47 VPD 0.000 1.634 6.65 135316 4940 140256
48 WD 0.002 183.127 360.00 135020 5236 140256
49 WS 0.023 2.309 13.52 133515 6741 140256


 
Santa Rita Grassland, Arizona, USA
AmeriFlux L2 variable names and descriptions

Obs name label
1 BIOME BIOME class
2 CO2 calculated CO2 concentration at 3.25m (umol/mol)
3 CO2den CO2 density at 3.25m (mmol/m3)
4 Dataname Dataset name
5 Day Day
6 DirName Directory Name
7 Ebalance Energy balance [[LE+H+FG]/Rn]
8 Elevation Elevation (masl)
9 FC CO2 flux at 3.25m (umol/m2/s)
10 FG Soil heat flux at 0cm (W/m2)
11 FH2O calculated Water vapor flux at 3.25m (mmol/m2/s)
12 FluxnetID Fluxnet name
13 GMT Greenwich mean time
14 GMT_date GMT date
15 GMT_day GMT day
16 GMT_hour GMT hour
17 GMT_jd GMT Day of year
18 GMT_min GMT minute
19 GMT_month GMT month
20 GMT_year GMT year
21 H Sensible heat flux at 3.25m (W/m2)
22 H2O calculated Water vapor concentration at 3.25m (mmol/mol)
23 H2Oden Water vapor density at 3.25m (mmol/m3)
24 Hour Hour
25 IGBP IGBP vegetation type
26 JD Day of year
27 LE Latent heat flux at 3.25m (W/m2)
28 Latitude Latitude (decimal degrees)
29 Longitude Longitude (decimal degrees)
30 MODIS MODIS Land Cover Type 5
31 Minute Minute
32 Month Month
33 NEE Net ecosystem exchange (umol/m2/s)
34 OrigFile Originating filename
35 PAR Incoming photosynthetically active radiation at 3m (umol/m2/s)
36 PARout Outgoing photosynthetically active radiation at 3m (umol/m2/s)
37 PI Principal investigator
38 PIemail PI email
39 PREC Precipitation (mm)
40 PRECcum Precipitation annual cumulative (mm)
41 PRESS Barometric pressure at 3.25m (kPa)
42 RH calculated Relative humidity at 3m (%)
43 Rg Incoming global solar radiation at 3m (W/m2)
44 RgOut Outgoing global solar radiation at 3m (W/m2)
45 Rgl Incoming long wave radiation at 3m (W/m2)
46 RglOut Outgoing long wave radiation at 3m (W/m2)
47 Rn Net radiation at 3m (W/m2)
48 SASDTime DateTime
49 SASDate Date
50 SFC CO2 storage flux at 0-3.25m (umol/m2/s)
51 SVP calculated Saturated vapor pressure at 3m (kPa)
52 SWC Soil moisture volumetric content at 2.5-5cm (%)
53 SWC_10 Soil moisture volumetric content at 5-10cm (%)
54 SWC_20 Soil moisture volumetric content at 15-20cm (%)
55 SWC_30 Soil moisture volumetric content at 25-30cm (%)
56 SWC_50 Soil moisture volumetric content at 45-50cm (%)
57 SWC_75 Soil moisture volumetric content at 75cm (%)
58 SWC__2 2nd Soil moisture volumetric content at 2.5-5cm (%)
59 SWC__2_10 2nd Soil moisture volumetric content at 5-10cm (%)
60 SWC__2_20 2nd Soil moisture volumetric content at 15-20cm (%)
61 SWC__2_30 2nd Soil moisture volumetric content at 25-30cm (%)
62 SWC__2_50 2nd Soil moisture volumetric content at 40-50cm (%)
63 Site Site
64 SiteDesc Site description
65 SiteName Site name
66 TA Air temperature at 3m (deg C)
67 TS Soil temperature at 4cm (deg C)
68 TS_18 Soil temperature at 18cm (deg C)
69 TS_28 Soil temperature at 28cm (deg C)
70 TS_45 Soil temperature at 45cm (deg C)
71 TS_75 Soil temperature at 75cm (deg C)
72 TS_8 Soil temperature at 8cm (deg C)
73 TS__2 2nd Soil temperature at 4cm (deg C)
74 TS__2_8 2nd Soil temperature at 8cm (deg C)
75 Tsonic Temperature from sonic anemometer at 3.25m (deg C)
76 UST Friction velocity at 3.25m (m/s)
77 VP Vapor pressure at 3m (kPa)
78 VPD calculated Vapor pressure deficit at 3m (kPa)
79 WD Wind direction at 3m (deg)
80 WS Wind speed at 3m (m/s)
81 Year Year


 
Santa Rita Grassland, Arizona, USA
Ameriflux L2 variables mapped into standardized files
with gaps

Obs rec
1 /* filename santarita_gra.sas */
2 /* Modis name --- */
3 CO2top = co2; * co2 above the canopy;
4 CO2height = 3.25; * co2_top height;
5 CO2 = co2; * co2;
6 FC = fc; * fc above the canopy;
7 if fc ne . then GAP = 0; else GAP = -1;
8 FG = fg; * fg;
9 H = h; * h;
10 H2O = h2o; * h2o above the canopy;
11 LE = le; * le;
12 NEE = nee; * nee;
13 PAR = par; * par above canopy;
14 PARout = parout; * parout above canopy;
15 PREC = prec; * prec;
16 PRESS = press; * press;
17 RH = rh; * rh above the canopy at 3m;
18 Rg = rg; * rg above canopy;
19 RgOut = rgout; * rgout above canopy;
20 Rgl = rgl; * rgl above canopy;
21 RglOut = rglout; * rglout above canopy;
22 Rn = rn; * rn above canopy;
23 SFC = -6999.; * sfc - all missing;
24 SWC1 = swc; * swc at the first depth, 2.5-5 cm;
25 SWC2 = swc_10; * swc at the second depth, 5-10 cm;
26 SWCdepth1 = 5; * 2.5-5 cm, first SWC depth value;
27 SWCdepth2 = 10; * 5-10 cm, second SWC depth value;
28 TA = ta; * ta above the canopy at 3m;
29 TS1 = ts; * ts at the first depth;
30 TS2 = ts_8; * ts at the second depth;
31 TSdepth1 = 4; * at 4cm, first ts depth value;
32 TSdepth2 = 8; * at 8cm, second ts depth value;
33 UST = ust; * ust;
34 VPD = vpd; * vpd at 3m;
35 WD = wd; * wd above the canopy;
36 WS = ws; * ws above the canopy;
37 APAR = -6999.; * apar;
38 APARpct = -6999.; * aparpct;
39 GPP = -6999.; * gpp;
40 PARdif = -6999.; * pardif;
41 Rgdif = -6999.; * rgdif diffuse radiation;
42 RE = -6999.; * re;
43 SH = -6999.; * sh;
44 SLE = -6999.; * sle;
45 ZL = -6999; * zl;