Field Notes

<--2016-07-20 11:05:00 | 2016-08-12 10:40:00-->
Other sites visited today: Sherman Wetland | East End | Mayberry | Twitchell Rice | West Pond

Twitchell Alfalfa: 2016-08-01 11:20:00 (DOY 214)
Author: Elke Eichelmann
Others: Kyle Hemes, Markus Reichstein

Summary: Normal data collection, forced diffusion chamber working.

Arrived: 11:20. Sunny, breezy, hazy in distance, clear sky. Alfalfa growing but not yet flowering.

Collected USB GHG data; collected camera data; collected met data; collected rad data from CR10X; collected camera card: swapped CF card “TA” in and “SI” out; collected soil CO2: two TCs not working, STC12 and STC14=NAN.

Did soil respiration measurements, did vegetation height and clip plots.
Veg height (cm): 26, 38, 44, 23, 49, 32, 37, 36, 39, 24, 39, 44, 31, 39, 39, 31, 35, 37, 51, 45.

Did not do spectral as the spectrometer is currently broken.
Could hear the forced diffusion chamber working.
Radiation sensors were very dirty, so we cleaned them.

LI7500 readings
CO2 393.96
H2O 709.0
T 20.24
P 101.19
ss 100.7

Left: 12:05.

Veg Height (cm): Tape measure from ground to top of plant
26, 38, 44, 23, 49, 32, 37, 36, 39, 24, 39, 44, 31, 39, 39, 31, 35, 37, 51, 45, avg = 37, stdev = 7.63

0 photos found

Graphs display:
7 sets found

Can't check TA_met
11 TA_met graphs found

Alfalfa Temperatures

Alfalfa Soil Heat Flux

Alfalfa Soil Moisture

Alfalfa Soil Temperatures Set A

Alfalfa Soil Temperatures Set B

Alfalfa Soil Temperatures Set C

NDVI Narrow Band Radiation

Soil CO2 Flux

Relative Humidity and BattV

SRS NDVI and PRI

PRI Narrow Band Channels

Can't check TA_rad
3 TA_rad graphs found

Alfalfa Radiation

Alfalfa LED NDVI Sensor

Alfalfa PAR

Can't check TA_flux
5 TA_flux graphs found

Alfalfa Sonic Wind

Alfalfa CO2 and H2O

Alfalfa Methane

Alfalfa Pressure

Alfalfa Flux Data Counts

Can't check TA_soilco2
7 TA_soilco2 graphs found

Set A Soil CO2

Set B Soil CO2

Soil CO2 Soil Moisture

Forced Diffusion CO2

Alfalfa Forerunner Soil CO2

Alfalfa Forerunner Temperatures

Alfalfa Forerunner Probe RH

No data found for TA_arable.
1 TA_cam graphs found

GCC

Can't check TATWBABCSB_cam