When: Date: 3/14/2007 , Day: 73 , Watch Time: 9:30 am .
Where: Tonzi/Vaira Ranch
Who: Siyan and Youngryle (Met Ted at Vaira and Tonzi)
Weather: clear with slight white clouds, a beautiful day
Phenology: grasses grow a lot. LAI ~1.5 at Vaira. See cows at Vaira. Seem only small cows were left. Oak leaf hasn’t come out yet. See some leaf-out on the way back.

Summary

1. Flux system worked all well at Tower, Floor, and Vaira.
2. correct PC and datalogger time with GPS at tower and floor sites. There are a few minutes delay before GPS shows stable Time reading.
3. grass sample for LAI and phenology in Tower and Vaira
4. soil moisture at Vaira and Tower
5. dendrometer
6. spectrometer (Youngryle)

Vaira_Grass Site

1. Fence and gate power: >12 v.
2. Panel and Batteries: 13.9 v; 15.2 amps; 3.0 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	8:39:00
Path/File name	D:\Data\V07_ 073 .flx D:\Data\VR070730800 .raw
	mean	std		mean	std
w	0.04	0.208	Ts	18.64	0.59
u	0.31	0.27	H2O	2.56	0.16
v	0.50	0.615	CO2	2.08	0.05
			Tc	1.672	0.089

1. downloading data: OK
2. check the fans of air temp. and relative humidity sensors at Vaira. OK
3. Check MD-9 system connections: OK
4. Check levels of Radiation sensors, clear up surfaces. Done!

9. Closed gate and set up fence.

Tonzi_Tower Site

1. Fence and gate power: >12 v.
2. Panel and Batteries: 13.8 v; 0.0 amps; 6.2 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
Path/File name	D:\Data\T07_ .flx D:\Data\TW07 .raw
	mean	std		mean	std
w	-0.69	0.87	Ts	20.6	0.763
u	3.3	1.624	H2O	3.16	1.105
v	1.94	0.774	CO2	1.86	0.023

1. downloading data OK
2. check the fans of air temp. and relative humidity sensors on the tower and the floor. OK
3. Check calibration cylinders;

CO₂ 1400 psig; flow 20 psi.
N₂ 1200 psig; flow 20 psi.
Ted showed me how to check the CO2 values. Click “Ports/Flags” button to see which ports or flags is setting high. Pressure should be less than ambient value. When Flag 8 is high, it may indicate that RRR’s battery is low.

1. close gate and set up fence.

Toniz_Floor Site

1. Fence and gate power: >12 v.
2. Panel and Batteries: 13.7 v; 11.1 amps; 1.7 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
Path/File name	D:\Data\F07_ .flx D:\Data\FL07 .raw
	mean	std		mean	std
w	0.09	0.165	Ts	18.8	0.625
u	0.11	0.733	H2O	2.24	0.142
v	0.99	0.156	CO2	2.03	0.017

1. downloading data: OK
2. Check MD-9 system connections: OK

CR23X3 – floor-Met
CR23X5 – soil CO₂ profile
CR23X6 – tower-Met
CR10X2 – floor-Met
CR10X4 – sap-flow: #5 -99999
CR10X7 – CO₂ profile
CR10X8 – wind profile

1. Soil CO₂ profile

Reading from datalogger

Panel temp		25.2
Battery voltage		13.3
CO2E_1	1039	TCE_1	21.9	CO2W_1	1098	TCW_1	19.4
CO2E_2	1936	TCE_2	22.0	CO2W_2	1767	TCW_2	17.1
CO2E_3	2327	TCE_3	17.6	CO2W_3	2898	TCW_3	16.1
CO2E_4	3068	TCE_4	14.7	CO2W_4	5114	TCW_4	16.8

Reading from panels of analyzers

depth	Open	order	depth	Tree	order
2cm (1%)	2100	1	2cm (1%)	2090	1
4cm	4030	2	4cm	3710	4
8cm	6730	3	8cm	1.15%	2
16cm	6200	4	16cm	1.02%	3

1. Close gate and set up fence.

tonzi	7931AFE	402165	574B4B	402FF3	574632	7A432E	7A3C6E	7A3B40	7A4AAA
16-Mar-07	73
	SM
0-15	33.5	23.7	34.4	24.9	29.6	28.2	23.1	19.4	14.9
15-30	38.9	34.7	40.1	35.2	38.1	21.8	31.3	29.8	17.0
30-45	40.5	42.3	46.2	40.3	47.2	27.4	33.8	32.0	32.8
45-60	43.7	63.2	59.7	46.4	44.0	32.1	36.5	45.4	27.0
	A6D882B	A3D04E8	A6D72F5
0-15	31.3	27.5	15.6
15-30	22.4	25.4	28.3
30-45	33.4	33.8	34.0
45-60	42.2	50.2	48.7
vaira	57318a	7933dee
0-15	14.3	15.3
15-30	21.9	25.5
30-45	25.0	27.0
45-60	29.4	34.4

Tonzi
Dendrometer
Date	Day	Tag #	Reading (cm)
3/14/2007	73	71	23.8
		72	23.8
		77	Broken
		78	Broken
		79	23.4
		245	22.7
		248	24.8 (out of range)
		250	21.9
		255	21.9
		‌252‌	missing
		102	Broken