Field Notes

<--2007-01-19 09:30:00 | 2007-03-02 09:30:00-->

Tonzi: 2007-02-04 11:30:00 (DOY 35)
Author: Siyan Ma
Others:

When: Date: 2/4/2007 , Day: 35 , Watch Time: 11:30am .
Where: Tonzi/Vaira Ranch
Who: Siyan
Weather: clear, slightly cloudy, warm
Phenology: grass didn’t grow very much at both sites. Grass at Tonzi looks yellow-green. This is a dry winter. Mr.Tonzi’s reservoir was almost empty. Met Mr. Tonzi. He is going to cut more woods for markets. He mentioned 1975 was as dry as this winter. His neighbors want to sell their ranch to developers to make money. He was worried about it because the changes would make it difficult for them who still wanted to stay and keep the oak woodland. One hundred years, the rate of land was 6 dollars per ace, but nowadays it costs 3000 dollars per acre. Gas was 10 cents per gallon one hundred years ago. Last year there was not many acorns, he wondered how about this year.
Summary

Check EC system and download data. All is well.
Radiation Tram was parking in the charging station.
Power on Floor site is OK.
Soil CO₂ profile worked well, but no power on the fences. Didn’t find broken wire‌
dendrometer, soil moisture, and spectrume were measured. Dendrometers need reset because some have been out of range!!!

Vaira_Grass Site

Fence and gate power: >12 v.
Panel and Batteries: 13.2 v; 7.9 amps; 2.7 amps.
Reading from Gillsonic screen before downloading data. (The value of H₂O and CO₂ should be in the range of 0 – 5 v.)

Time	11:55:07
Path/File name	D:\Data\V07_035.flx D:\Data\VR070351200.raw
	mean	std		mean	std
w	-0.06	0.37	Ts	17.7	0.65
u	-0.27	0.79	H₂O	1.59	0.08
v	0.19	1.15	CO₂	1.99	0.02
			TC	1.165	0.04

downloading data OK
clean up the surfaces of Delta PAR sensor.
check CR23X: BUSY WITH COM.
spectrometer measurement.
Closed gate and set up fence.

Tonzi_Tower Site

Fence and gate power: >12 v.
Panel and Batteries: 13.3 v; 0.0 amps; 6.2 amps.
Reading from Gillsonic screen before downloading data. (The value of H₂O and CO₂ should be in the range of 0 – 5 v.)

Time	14:05:44
Path/File name	D:\Data\T07_035 .flx D:\Data\TW070351400.raw
	mean	std		mean	std
w	-0.58	0.937	Ts	19.29	0.536
u	0.25	0.494	H₂O	1.9	0.035
v	1.25	0.383	CO₂	1.9	0.016

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

CO₂ 1500 psig; flow 18 psi.
N₂ 1300 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

close gate and set up fence. OK

Toniz_Floor Site

Fence and gate power: 12 v.
Panel and Batteries: 13.6 v; 12.0 amps; 1.8 amps.
Reading from Gillsonic screen before downloading data. (The value of H₂O and CO₂ should be in the range of 0 – 5 v.)

Time	14:16:38
Path/File name	D:\Data\F06_ 035 .flx D:\Data\FL06 0 .raw
	mean	std		mean	std
w	0.05	0.200	Ts	19.9	0.461
u	0.09	0.399	H₂O	2.04	0.065
v	1.55	0.823	CO₂	2.03	0.011

downloading data: OK
Check MD-9 system connections: OK

CR23X3 – floor-Met
CR23X5 – soil CO₂ profile
CR23X6 – tower-Met
CR10X2 – floor-Met
CR10X4 – sap-flow
CR10X7 – CO₂ profile
CR10X8 – wind profile
CR1021 – Xingyuan’s sap flow

Soil CO₂ profile

Reading from datalogger

Panel temp		23.5
Battery voltage		13.4
CO2E_1	534	TCE_1	13.96	CO2W_1	487	TCW_1	22.5
CO2E_2	679	TCE_2	15.2	CO2W_2	752	TCW_2	16.9
CO2E_3	1000	TCE_3	12.3	CO2W_3	1083	TCW_3	12.9
CO2E_4	1056	TCE_4	8.9	CO2W_4	1698	TCW_4	14.6

soil moisture (TDR)

tonzi	7931AFE	402165	574B4B	402FF3	574632	7A432E	7A3C6E	7A3B40	7A4AAA
4-Feb-07	35
	SM
0-15	16.1	13.8	33.7	15.0	28.8	18.8	20.9	14.9	9.4
15-30	21.6	24.0	33.4	28.8	32.9	14.9	27.0	28.0	9.3
30-45	20.9	17.3	38.5	33.1	47.6	16.5	26.5	29.6	22.5
45-60	17.8	8.9	53.7	38.8	33.6	17.3	36.1	38.3	12.7

	A6D882B	A3D04E8	A6D72F5

0-15	30.2	25.6	11.7
15-30	20.5	23.7	26.2
30-45	31.4	31.4	29.3
45-60	35.9	45.3	40.4

vaira	57318a	7933dee
0-15	6.9	15.8
15-30	23.3	27.4
30-45	25.6	28.3
45-60	28.2	34.3