Field Notes

When: June 13, 2002, d164 Thu
Where: Tonzi/Vaira Ranches
Who: Liukang Xu
Weather Sunny, temperature upper 80s. lower wind.

Trip Purpose: check 3 flux systems and download data, soil moisture probe reading, dendrometer reading, A/Ci curve for oak leaf at Tonzi Ranch.

All setup files for three flux systems are same.

Problem: The flux system at floor was only running a few hours a day since Dennis and Ted’s last trip on June 6, 2002 (d157). See the watchdog figure. I guess it might be due to the pc208 task? You guys modified something with pc208 task?

Tonzi Ranch: Arrived at 9:30 am, Finished 3 A/Ci curves on oak leaf.

Dendrometer reading:

Soil moisture probe reading:

Floor flux system: Fence working good. Gillsonic program was frozen. During last week, every day the system was running only for a few hour. See the watchdog above. Also only CR23X3 data logger was communicating with pc. We got tz3_021??.23x file every day. There was no communication between other data-loggers with the pc. But after I rebooted pc, all the data (cumulated from last whole week) did transfer to the PC. I don’t know what’s wrong ? PV reading 13.9V, 13.2A, and 1.7A. Setup file at floor are;

After reboot pc, gillsonic outputs are;

Tower flux system: Fence working, flux system was running good during last week. PV reading 13.5V, 7.9A, and 2.6A battery half full at 11:45am. Download data. The setup file is

Sonic flux program output after I downloading data and reboot PC.

Vaira Ranch: Fence and flux system running good. PV reading 13.6, 6.2 and 2.6A. Battery half full. Setup file is:

Soil moisture probe reading see above. Gillsonic outputs after download the data and reboot pc

Sonic N is facing W. I guess we need measure the orientation, then need correct it.