Index of /ftp/ameriflux/data/Level1/Sites_ByName/Bondville
site: Bondville (Actually site is near Champaign, Il on Reifsteck Farm
vegetation: alernating crop (corn/soybean)
Latitude:40.00621
Longitude:88.29041
Leaf area index: see individual files for each year
flux system measuremen height: was 8 m until 6/2001 moved to 10 m
Following is a list and units of data contained in the BV01_XXX.DAT files where XXX is the calender day of year.
Column variable units
1 decimal day -
2 calender day -
3 hour -
4 wind speed m/s
5 wind direction degrees
6 air temperature degrees C
7 relative humidity %
8 pressure mb
9 incoming PAR uE/m2/s
10 outgoing PAR uE/m2/s
11 incoming global W/m2
12 outgoing global W/m2
13 incoming longwave W/m2
14 outgoing longwave W/m2
15 net radiation W/m2 (an allwave net)
16 ground heat flux W/m2
17 wetness -
18 precip mm
19 surface temperature degrees C
20 soil temp (2 cm) degrees C
21 soil temp (4 cm) degrees C
22 soil temp (8 cm) degrees C
23 soil temp (16 cm) degrees C
24 soil temp (32 cm) degrees C
25 soil temp (64 cm) degrees C
26 u_bar (sonic) m/s
27 momentum flux (u'w') m2/s2
28 u'2 m2/s2
29 v'2 m2/s2
30 w'2 m2/s2
31 sensible heat flux W/m2
32 latent heat flux W/m2
33 CO2 flux mg CO2/m2/s
34 soil moisture (10 cm) volumetric water content
35 soil moisture (20 cm) volumetric water content
36 soil moisture (30 cm) volumetric water content
37 soil moisture (40 cm) volumetric water content
38 soil moisture (60 cm) volumetric water content
39 soil moisture (100 cm) volumetric water content