Field Notes
<--2014-09-04 11:45:00 | 2014-09-10 11:00:00-->Other sites visited today: Sherman Island | Mayberry | Twitchell Rice | East End | West Pond
Twitchell Alfalfa: 2014-09-08 13:30:00 (DOY 251)
Author: Cove Sturtevant
Others: Patty, Ameriflux BADM folks
Summary: Alfalfa mown. Regular fieldwork. Checked weird readings from soil CO2 system but seemed fine.
| Twitchell Alfalfa 2014-09-08 Patty arrived at about 13:30 PDT with the Ameriflux BADM folks. It was very windy and sunny. The Alfalfa has been mown but not baled. The field to the east was not completely mown yet. The Ameriflux folks clipped the remaining alfalfa under the rad boom. Did spectral. Later, Patty and I returned to the site to check out the soil CO2 system. The readings all seemed very low. But we pulled the probes out and read what we thought seemed reasonable for atmospheric concentrations. Replaced profile B 8cm sn K1340006 with sn F4960018. 7500 readings: CO2 = 393 ppm H2O = 560 mmol m-3 signal strength = 82.0% p = 100.92 kPa t = 36.1 C sos = 348.8 m s-1 Soil Co2 readings: 1: 144 2: 78 3: 120 4: 129 5: 107 6: 136 FD1: 92 FD2: 45 |
Veg Height (cm): Visual estimate - Too short to measure -- just clipped
5, avg = 5, stdev = 0
4 photos found
TA_autocam_20140908_1615.jpg ( 2014-09-08 16:15:02 ) Full size: 1920x1440
Cove and Patty check soil CO2 soon after mowing
TA_autocam_20140907_1045.jpg ( 2014-09-07 10:45:02 ) Full size: 1920x1440
Tractor on field
TA_autocam_20140907_1545.jpg ( 2014-09-07 15:45:02 ) Full size: 1920x1440
Mowed
TA_autocam_20140908_1245.jpg ( 2014-09-08 12:45:02 ) Full size: 1920x1440
Ameriflux field tour
7 sets found
Can't check TA_met
11 TA_met graphs found
Can't check TA_rad
3 TA_rad graphs found
Can't check TA_flux
5 TA_flux graphs found
Can't check TA_soilco2
7 TA_soilco2 graphs found
No data found for TA_arable.
1 TA_cam graphs found
Can't check TATWBABCSB_cam