Field Notes

When: Date: 10/13/2004 , Day: 287 , Watch Time: 11:10 am .
Where: Tonzi/Vaira Ranch
Who: Siyan, Qi, Matthias, and Larry Flanagan (visitor)
Weather: Sunny, breeze, not hot
Phenology: Oak leaves looked more yellow. Dead grass.

Summary & Problems

1. Overall, three Flux towers were working well. Data were downloaded. However, the laptop screen at Tower and Floor site still didn’t work well. Once in a while, I even couldn’t see anything on the screen.
2. Soil surface was still extremely dry. Leaf turned to be more yellow. Most of the seedlings were yellow, but some looked healthy and green/red.
3. soil moisture was measured.
4. JPL will fly over Tonzi site. Qi Chen collected ground spectrum data to correct atmospheric effect. JPL may fly one more time because of the smoke in the sky.
5. Matthias measured spectrum

Vaira_Grass Site

1. Fence and gate power: > 12.0 v.
2. Panel and Batteries: 13.1 v; 13.8 amps; 2.2 amps.
3. Reading from Gillsonic screen before downloading data.

   Time	13:09:21
   Path/File name	D: VR4_287.Flx 1023.933
   	mean	std		mean	std
   w	-0.25	0.249	Ts	30.06	0.829
   u	-0.52	0.631	H2O	0.726	0.004
   v	-0.02	0.507	CO2	1.526	0.011

4. Download data.
5. Readings of last look

   Time	13:21:11
   Path/File name	D: VR4_287.Flx
   	mean	std		mean	std
   w	0.24		Ts	29.864
   u	-1.47		H2O	0.73
   v	-1.69		CO2	1.53

6. CR23X with two multiplexers were working well.
7. Radiation sensors’ surfaces were clean.
8. Closed gate and set up fence.