Field Notes

When: Date: 1/17/2005 , Day: 17 , Watch Time: 12:35pm
Where: Tonzi/Vaira Ranch
Who: Siyan
Weather: Cloudy, foggy, very wet on the grass

Summary

1. Vaira Rain Gange SN# = 24875-9999, Model = TR-525I-R1
2. No power for Vaira Datalogger. Maybe need bring fully charged battery to Vaira site.
3. No power for Vaira fence.
4. Floor and Vaira Flux systems shut down because of “LVD”. After restart the power regulator, flux systems are working.
5. Measure soil moisture.
6. Collect leave samples: Vaira grass, Tonzi understory grass

Vaira_Grass Site

1. Fence and gate power: <12.0 v.
2. Panel and Batteries: 12.2 v; 2.4 amps; Lvd amps. After restart it, “Lvd” turned into 2.2 amps.
3. Reading from Gillsonic screen before downloading data. (The value of H₂O and CO₂ should be in the range of 0 – 5 v.)

   Time	12:48:53
   Path/File name	VR5_17.flx
   	mean	std		mean	std
   w	0.11	-	Ts	11.313	-
   u	1.21	-	H2O	3.733	-
   v	-0.66	-	CO2	4.012	-

4. Download data.
5. No power on datalogger. Swap with the fence battery (11.8v), still 3.42v on the datalogger.
6. Closed gate and set up fence.
7. Rain Gange SN# = 24875-999, Model = TR-525I-R1