Field Notes

<--2015-03-05 13:00:00 | 2015-04-09 10:55:00-->
Other sites visited today: Sherman Island | Mayberry | Twitchell Rice | East End | West Pond
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Twitchell Alfalfa: 2015-03-24 13:45:00 (DOY 83)
Author: Cove Sturtevant
Others: Dennis, Joe, Housen

Summary: Sheep grazed tower half of field, leaving ungrazed square. Ants in box - installed bait.

Twitchell Alfalfa
2015-03-24

We arrived at about 13:45 PDT. Warm and breezy. Sheep were clearly moved to the half of the field near the tower. There is a large square of ungrazed alfalfa where they fenced off the area between the tower and the rad boom. The soil respiration sensors and collars are in this area of ungrazed alfalfa.

Downloaded data. Dennis and Housen did soil respiration. Ants in the met box – installed bait.

7500 readings:
CO2 = 393 ppm (403 after cleaning)
H2O = 608 mmol m-3 (560 after cleaning)
signal strength = 87.2% (89.7% after cleaning)
p = 102.3 kPa
t = 21 C
sos = 346 m s-1

Veg Height (cm): Tape measure from ground to top of plant - Sheep grazed
7, 17, 7, 7, 18, 14, 8, 12, 18, 0, 14, 10, 0, 14, 8, 7, 0, 15, 4, 10, avg = 9.5, stdev = 5.75

4 photos found

Radiation and soil sensors, field mowed by sheep
20150324TA_RadSoil.jpg ( 2015-03-24 14:17:20 ) Full size: 1024x768
Radiation and soil sensors, field mowed by sheep

Cove at tower
20150324TA_CoveTower.jpg ( 2015-03-24 14:17:04 ) Full size: 1024x768
Cove at tower

Dennis, Housen and Cove
TA_autocam_20150324_1245.jpg ( 2015-03-24 12:45:01 ) Full size: 1920x1440
Dennis, Housen and Cove

Cove on site
TA_autocam_20150324_1315.jpg ( 2015-03-24 13:15:01 ) Full size: 1920x1440
Cove on site

Graphs display:
7 sets found

Can't check TA_met
11 TA_met graphs found

Explore the graph:Alfalfa Temperatures in a new window

Explore the graph:Alfalfa Soil Heat Flux in a new window

Explore the graph:Alfalfa Soil Moisture in a new window

Explore the graph:Alfalfa Soil Temperatures Set A in a new window

Explore the graph:Alfalfa Soil Temperatures Set B in a new window

Explore the graph:Alfalfa Soil Temperatures Set C in a new window

Explore the graph:NDVI Narrow Band Radiation in a new window

Explore the graph:Soil CO2 Flux in a new window

Explore the graph:Relative Humidity and BattV in a new window

Explore the graph:SRS NDVI and PRI in a new window

Explore the graph:PRI Narrow Band Channels in a new window

Can't check TA_rad
3 TA_rad graphs found

Explore the graph:Alfalfa Radiation in a new window

Explore the graph:Alfalfa LED NDVI Sensor in a new window

Explore the graph:Alfalfa PAR in a new window

Can't check TA_flux
5 TA_flux graphs found

Explore the graph:Alfalfa Sonic Wind in a new window

Explore the graph:Alfalfa CO2 and H2O in a new window

Explore the graph:Alfalfa Methane in a new window

Explore the graph:Alfalfa Pressure in a new window

Explore the graph:Alfalfa Flux Data Counts in a new window

Can't check TA_soilco2
7 TA_soilco2 graphs found

Explore the graph:Set A Soil CO2 in a new window

Explore the graph:Set B Soil CO2 in a new window

Explore the graph:Soil CO2 Soil Moisture in a new window

Explore the graph:Forced Diffusion CO2 in a new window

Explore the graph:Alfalfa Forerunner Soil CO2 in a new window

Explore the graph:Alfalfa Forerunner Temperatures in a new window

Explore the graph:Alfalfa Forerunner Probe RH in a new window

No data found for TA_arable.
1 TA_cam graphs found

Explore the graph:GCC in a new window

Can't check TATWBABCSB_cam