Field Notes

Twitchell Rice: 2016-08-01 09:20:00 (DOY 214)
Author: Elke Eichelmann
Others: Kyle Hemes, Markus Reichstein

Summary: Switched 12V power wire for water level, normal data collection, lots of weeds.

Arrived: 9:20. Sunny, clear, light wind, hazy in the distance. Lots of weeds in the field, almost no rice in front third of the field.

Methane wash water reservoir already full. Collected USB GHG data; collected met data from 23X, SHF1=-INF, all else looks good; did not collect camera card images.

Collected 5 biomass samples, and vegetation height measurements
Veg height (cm): 69, 70, 65, 69, 83, 77, 75, 73, 80, 77, 80, 89, 79, 74, 72, 70, 70, 74, 73, 75.

Cleaned solar panels.
Measured water level around tower (cm): 16, 11, 8, 15, 18.

Switched 12V power for water level from one shared with AM25T to one shared with pressure sensor, net radiometer, and some other stuff.

LI7500 readings
CO2 398.36
H2O 653.0
T 19.03
P 101.72
ss 82.93 -> 83.5 after cleaning
LI7700 readings
CH4 1.90 -> 1.93 after cleaning
rssi 52 ->69.7 after cleaning

Left: 10:05

Veg Height (cm): Tape measure from ground to top of plant
69, 70, 65, 69, 83, 77, 75, 73, 80, 77, 80, 89, 79, 74, 72, 70, 70, 74, 73, 75, avg = 74.7, stdev = 5.61

0 photos found

6 sets found

12 TW_met graphs found