When: Date: 12/26/2006 , Day: 360 , Watch Time: 11:30am .
Where: Tonzi/Vaira Ranch
Who: Siyan
Weather: cloudy, windy
Phenology: grass germination, 3-4cm tall in Varia, 1-3cm tall in Tonzi. Oak leaves have fallen off. Grass didn’t change very much since last visit.
Summary

1. Power problem on Floor site!!! Screen showed “VGA NO INPUT SIGNAL”. Looks like there’s no enough power to run the screen. So, I disconnected Screen and Keyboard with the PC to save power. I also opened CD drive to save more power. PC was reset up after disconnections.
2. Soil CO₂ profile: something wrong with sensors on the open site!!! Readings were all zero.
3. Check and download data at Tower and Varia. EC systems worked well.
4. Measured groundwater, dendrometer, and spectrometer. Dendrometers need reset because some have been out of range!!!

Groundwater: roadside 36.97 ft; tower 32.45 ft; understory 27.16 ft. Groundwater raised ~0.5ft compared with the measurements on Dec. 6, 2006.
Vaira_Grass Site

1. Fence and gate power: >12 v.
2. Panel and Batteries: 12.4 v; 1.9 amps; 3.2 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	11:44:05
Path/File name	D:\Data\V06_ 360 .flx D:\Data\VR063601000.raw
	mean	std		mean	std
w	0.23	0.82	Ts	20.96	0.19
u	-5.5	2.07	H2O	1.5	0.061
v	-1.97	1.26	CO2	2.09	0.008
			TC	1.38	0.139

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. Closed gate and set up fence. OK

Tonzi_Tower Site

1. Fence and gate power: >12 v.
2. Panel and Batteries: 12.0 v; 0.0 amps; 6.7 amps.
3. Reading from Gillsonic screen before downloading data. (The value of H₂O and CO₂ should be in the range of 0 – 5 v.)

13:06:18	10:53:28
Path/File name	D:\Data\T06_360 .flx D:\Data\TW063601300.raw
	mean	std		mean	std
w	0.65	0.788	Ts	20.06	0.236
u	-1.68	0.788	H2O	1.86	0.057
v	1.51	1.908	CO2	1.99	0.019

1. downloading data OK
2. PC time was about a few second difference from GPS.
3. check the fans of air temp. and relative humidity sensors on the tower and the floor.
4. Check calibration cylinders;

CO₂ 1600 psig; flow 18 psi.
N₂ 1400 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 OK

1. close gate and set up fence. OK

Toniz_Floor Site

1. Power problem on Floor site!!!
2. Screen showed “VGA NO INPUT SIGNAL”. Looks like there’s no enough power to run the screen. So, I disconnected Screen and Keyboard with the PC to save power. I also opened CD drive to save more power. PC was reset up after disconnections. Sounds OK.
3. I couldn’t download data and check MD-9 system connections.
4. Soil CO₂ profile: something wrong with sensors on the open site!!! Readings were all zero.

Reading from datalogger

Panel temp		16.27
Battery voltage		12.4
CO2E_1	0	TCE_1	11.6	CO2W_1	462	TCW_1	13.9
CO2E_2	0	TCE_2	12.2	CO2W_2	749	TCW_2	12.6
CO2E_3	0	TCE_3	10.6	CO2W_3	1213	TCW_3	12.2
CO2E_4	0	TCE_4	9.9	CO2W_4	2167	TCW_4	12.3

1. soil moisture (TDR)

tonzi	7931AFE	402165	574B4B	402FF3	574632	7A432E	7A3C6E	7A3B40	7A4AAA
26-Dec-06	360
	SM
0-15	15.9	14.3	32.5	22.3	20.3	21.4	23.8	19.4	11.2
15-30	16.4	23.7	35.5	32.7	35.0	18.1	28.5	29.2	7.5
30-45	18.8	9.8	38.5	23.9	15.1	12.6	19.0	23.5	14.0
45-60	15.3	5.9	8.8	10.5	12.1	10.7	11.9	19.1	10.7
	A6D882B	A3D04E8	A6D72F5
0-15	32.9	28.2	13.5
15-30	20.6	25.2	29.2
30-45	26.5	29.3	16.8
45-60	15.3	10.5	3.9
vaira	57318a	7933dee
0-15	10.9	16.7
15-30	21.2	28.8
30-45	21.2	25.6
45-60	18.7	23.3

1. Close gate and set up fence.

Tonzi
Dendrometer
Date	Day	Tag #	Reading (cm)
12/26/2006	360	71	22.6
		72	23.5
		77	Broken
		78	Broken
		79	23.3
		245	23.6
		248	25.0
		250	21.9
		255	22.0
		‌252‌	missing
		102	Broken