Field Notes

<--2013-04-24 09:30:00 | 2013-05-15 11:00:00-->

Tonzi: 2013-05-08 10:30:00 (DOY 128)
Author: Siyan Ma
Others:

Summary: Standard field work, broke USB drive with Vaira data on it, CO2 profile IRGA railed - brought in, checked settings on Tonzi Tower diffuse PAR, MD9 sporadic.

When: Date: 5/8/2013 , Day: 128 , Watch Time: 10:30 am .
Where: Tonzi/Vaira Ranch
Who: Siyan
Weather: clear, sunny
Phenology: grass mature and died out: 80%-90% at Vaira, 50% at Tonzi; getting drier

Summary

Checked and downloaded data from PC at Tower, Floor.
MD9 still didn’t work properly all the time. It wasn’t working when I was there, but it worked about 8 days ago.
Download data at Vaira by connecting to dataloggers directly, but USB memory stick may be damaged. Images had been deleted from the card of datalogger.
Swapped memory cards of CR1000s at three sites. All worked well.
Gashound for CO2 profile system read #INF, taken back to the lab.
Visited Tonzi diffusion light sensor, unit was umol m-2 s-1.
Collected grass samples for aboveground biomass.
Read dendrometers
Measured midday water potential of oak leaves and pine needles
Measured soil moisture
Measure groundwater well:

Date	DOY	Location	Depth without the black thing (feet)
5/8/2013	128	Floor	26.8
		Roadside	36.4
		Tower	31.7

Vaira_Grass Site

Fence and gate power: 12 v
download images from the card in a CR1000.
Swapped the memory cards of CR1000.
Check the fans of air temp and relative humidity sensors at Vaira. YES!
Download Met and soil CO2 profile from dataloggers.
Check levels of Radiation sensors, clear up surfaces.YES!
Check rain gage, make sure not clogged. YES!
Closed gate and set up fence. YES!
Collected grass for aboveground biomass.

Tonzi_Tower Site

Fence and gate power: 12 v.
Reading from Gillsonic screen before downloading data. (The value of H₂O and CO₂ should be in the range of 0 – 5 v.)

downloading data from PC.
Swapped the memory cards of CR1000.
check the fans of air temp. and relative humidity sensors on the tower and the floor. YES!
Gashound for CO2 profile system read #INF, taken back to the lab.

close gate and set up fence. YES!

Toniz_Floor Site

Fence and gate power: 12 v.
Reading from Gillsonic screen before downloading data. (The value of H₂O and CO₂ should be in the range of 0 – 5 v.)

downloading data from PC. YES!
Swapped the memory cards of CR1000.
Check MD-9 system connections wasn’t working at the moment, but it worked a week age.
Close gate and set up fence. YES!

Tonzi
Dendrometer

Date	Day	Tag #	Reading (mm)
5/8/2013	128	1	25
		2	18.6
		3	21.4
		4	4
		7	18.6
		8	9.9
		73	15.5
		79	17.1
		102	19.3
		245	14

tonzi	7931AFE	402165	574B4B	402FF3	574632	7A432E	7A3C6E	7A3B40	7A4AAA
5/8/2013	128
	sm
0-15	12.1	3.6	39.9	9.7	11.1	7.7	11.8	4.3	5.6
15-30	13.9	11.5	10.9	15.2	10.9	9.7	15.2	15.4	5.4
30-45	22.3	17.0	16.5	26.8	15.6	12.3	15.9	20.7	16.2
45-60	19.3	11.3	21.6	11.1	18.1	14.5	20.5	33.8	13.3

	A6D882B	A3D04E8	A6D72F5

0-15	7.1	6.1	23.9
15-30	10.0	1.1	14.5
30-45	19.3	18.4	11.1
45-60	26.5	24.7	23.6

vaira	7933dee	00000128B97F3	00000128B8072	00000128BDDE8
0-15	4.1	3.9	2.3	0.2
15-30	10.0	6.45	5.3	3.7
30-45	12.8	2.5	8.1	9.8
45-60	23.7	11.05	7.6	11.15