When: Date: 2/10/2010 , Day: 41 , Watch Time: 10:00 .
Where: Tonzi/Vaira Ranch
Who: Siyan, DDB, Joe
Weather: nice, partially cloudy day
Phenology: green grasses, no oak leaf yet

Tonzi
Vaira:

Summary

1. swapped IRGA at Vaira (remove #976; install #41).
2. Adjust the level of LED sensor at Vaira.
3. check and download data at Tower, Floor, and Vaira
4. Aspiring pump for understory Tair wasn’t working.
5. Didn’t calibrate Li-800 in the field because the CO2 profile system was temporally shut down to save power for running the Tower EC system.
6. Floor site PC’s clock was ~1day off. Fixed it! But the data files need to be fixed. (See figures at the end of this notes)
7. collected samples grasses
8. dendrometers
9. soil moisture by DDB
10. groundwater well:

Date	DOY	Location	No the black thing (feet)
2/10/2010	41	Floor	28.85
		Tower	32.85
		roadside	35.48

Vaira_Grass Site

1. Fence and gate power: 12 v.
2. Panel and Batteries: 12.7 v; 8.2 amps; 3.6 amps.
3. Reading from Gillsonic screen before downloading data. (The value of H₂O and CO₂ should be in the range of 0 – 5 v.)

1. downloading data
2. swap Li-7500: remove #976; install #41.
3. Check the fans of air temp. and relative humidity sensors at Vaira. YES!
4. Check MD-9 system connections YES!
5. Check CR23X with two multiplexers

1. Check levels of Radiation sensors, clear up surfaces.YES!
2. Check rain gage, make sure not clogged. YES!
3. Closed gate and set up fence. YES!

Tonzi_Tower Site

1. Fence and gate power: 12 v.
2. Panel and Batteries: 14.2 v; 0.0 amps; 2.4 amps.
3. Reading from Gillsonic screen before downloading data. (The value of H₂O and CO₂ should be in the range of 0 – 5 v.)

1. downloading data YES!
2. check the fans of air temp. and relative humidity sensors on the tower and the floor. YES!
3. Check rain gage, make sure not clogged. YES!
4. Check calibration cylinders;

CO₂ 1100 psig; flow 20 psi; 431.25 ppm.
N₂ 800 psig; flow 20 psi.
Manually calibrate Li-800. Following Ted’s instruction: H:\IoneSavanna_2004\Tower_2004\CO2Profile\LI800_Calibration_Procedure_2Nov04.txt
Is the pump running‌ Joe turned off when he visited last time to save power for running EC system.
No calibration this time.

1. close gate and set up fence. YES!

Toniz_Floor Site

1. Fence and gate power: 12 v.
2. Panel and Batteries: - v; - amps; - amps.
3. PC clock 1 day off!!!

Reading: Feb. 9, 11:24 am
Re-set: Feb. 10, 11:19 am

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

1. downloading data YES!
2. Check MD-9 system connections YES!

CR23X3 – floor-Met


CR23X5 – soil CO₂ profile

CR23X6 – tower-Met

CR10X2 – floor-Met

1. Soil CO₂ profile: working well.
2. Close gate and set up fence. YES!

tonzi	7931AFE	402165	574B4B	402FF3	574632	7A432E	7A3C6E	7A3B40	7A4AAA
2/10/2010	41
	DDB
0-15	44.6	26.6	50.3	40.4	39.9	37.2	30.0	26.6	18.8
15-30	41.3	45.6	38.9	43.2	40.1	41.4	30.1	33.5	26.2
30-45	39.1	44.5	43.0	43.4	43.2	36.9	34.1	33.9	37.0
45-60	38.4	51.7	63.2	43.4	42.6	35.9	45.4	47.4	37.5
	A6D882B	A3D04E8	A6D72F5
0-15	36.3	31.9	27.0
15-30	29.1	34.7	34.8
30-45	37.4	39.2	37.3
45-60	44.9	45.6	50.5
vaira	57318a	7933dee
0-15	27.0	29.6
15-30	28.4	30.1
30-45	27.9	33.5
45-60	38.1	36.5

Tonzi
Dendrometer
Date	Day	Tag #	Reading (mm)
2/10/2010	41	72	6.8
		79	10.3
		102	X
		245	9.8
		250	21.1	(reset to 10.5 on May 7, 2009)
		1	17.6
		2	10.0
		3	15.9
		4	6.5
		5	11.4
		7	14.4	133
		8	15.1	11828
		71	X
		77	X	‌
		78	X	‌
		248	X	broken
		255	X	‌
		‌252‌	X	‌
		6	X

Notes: “X” means not working any more.
Dendrometers installed by Gretchen group

Rename data files because of the PC clock off problem: