Field Notes

When: July 8, 2004 (D190) arrived at 1030 PST
Where: Tonzi/Vaira Ranch
Who: Dennis Baldocchi, Siyan Ma, and Ted Hehn
Weather: Mild day, Sunny, nice, cool breeze.
Phenology: yellow grass, dead

Summary

1. Overall EC systems were running well. Data were downloaded. Met data were not downloaded due to the switch between Drive C and D.
2. The power line at Vaira Site was still in temporary shape. It should be replaced shortly.
3. Soil moisture was measured.

Vaira_Grass site

1. Fence and gate were Ok.
2. EC running well. PV reading 13.7, 11.8, 2.2.
3. Swap Li-7500 CO2/H2O Analyzer: Remove sn 0418; Install sn 0041.
4. Download data.

   Time	14:08:01
   Patch/File name	VR4_190.Flux
   	mean	std		mean	std
   w	-0.4	0.386	Ts	29.68	1.265
   u	2.4	1.384	q	3.5	0.013
   v	0.4	1.09	CO2	1.48	0.019

5. Diff. Direct. Sensor has bird crap and was slightly off level. Cleaned it and resalaned.
6. Ted installed Rad. Extender bar, has NR light, PAR, VPD, O, and NDVI. Looks great and is seeing good dead grass again. (DB)
7. Band Net. Bad data over san pa tel. Only look at it covering. Rg. Level is OK. (DB)
8. Soil moisture readings.