Field Notes

<--2006-11-04 09:00:00 | 2006-11-29 00:00:00-->

Tonzi: 2006-11-19 11:00:00 (DOY 323)
Author: Siyan Ma
Others:

When: Date: 11/19/2006 , Day: 323 , Watch Time: 11:00am .
Where: Tonzi/Vaira Ranch
Who: Siyan
Weather: clear, a few white, light clouds, very foggy on Hwy 4
Phenology: grass germination, 2-3cm tall in Varia, 0-2cm tall in Tonzi. Oak leaves have fallen off.
Summary

swap new Li-7500 set (SN 0976) on Tower,
check and download data at Tower, Floor, and Varia. EC systems worked well. Power looks OK in three sites.
No picture taken on Tower after Nov. 4. I corrected PC clock and datalogger clock with GPS at tower and floor sites on Nov. 4. Tower PC is about 3 minute ahead compared with Floor PC. I am not sure I did something wrong. Tower picture is taken again after I corrected PC clock today.
grass sample for LAI and phenology in Vaira
Measured soil moisture, dendrometer, and spectrometer. Dendrometers need reset because some have been out of range!!!

Vaira_Grass Site

Fence and gate power: >12 v.
Panel and Batteries: 13.7 v; 15.8 amps; 2.5 amps.
Reading from Gillsonic screen before downloading data. (The value of H₂O and CO₂ should be in the range of 0 – 5 v.)

Time	11:51:27
Path/File name	D:\Data\V06_ 323 .flx D:\Data\VR06 3231130 .raw
	mean	std		mean	std
w	0.27	0.3	Ts	17.3	0.475
u	0.05	0.32	H₂O	2.907	0.023
v	-0.03	0.663	CO₂	2.56	0.01
			TC	1.65	0.029

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

9. Closed gate and set up fence. OK

Tonzi_Tower Site

Fence and gate power: >12 v.
Panel and Batteries: 13.3 v; 0.0 amps; 5.0 amps.
Reading from Gillsonic screen before downloading data. (The value of H₂O and CO₂ should be in the range of 0 – 5 v.)

Time	13:10:35
Path/File name	D:\Data\T06_ 323 .flx D:\Data\TW063231200 .raw
	mean	std		mean	std
w	0.05	0.036	Ts	19.8	0.512
u	3.04	0.686	H₂O	2.98	0.024
v	0.08	0.509	CO₂	2.36	0.023

downloading data OK
swaping Li-7500 Analyzer. (Remove SN# 41 ; install SN# 0976 )
check the fans of air temp. and relative humidity sensors on the tower and the floor.
Check calibration cylinders;

CO₂ 1700 psig; flow 18 psi.
N₂ 1650 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: 13.0 v; 4.7 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	14:07:39
Path/File name	D:\Data\F06_ 323 .flx D:\Data\FL06 3231400 .raw
	mean	std		mean	std
w	-1.90	0.223	Ts	19.5	0.65
u	0.33	0.684	H₂O	3.102	0.042
v	0.38	0.86	CO₂	2.198	0.042

downloading data
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

Soil CO₂ profile

Reading from datalogger

Panel temp		23.5
Battery voltage		13.29
CO2E_1	573	TCE_1	19.2	CO2W_1	577	TCW_1	23.5
CO2E_2	546	TCE_2	19.9	CO2W_2	683	TCW_2	20.5
CO2E_3	943	TCE_3	16.5	CO2W_3	999	TCW_3	18.2
CO2E_4	1154	TCE_4	14.7	CO2W_4	2287	TCW_4	18.6

Reading from panels of analyzers

depth	Open	order	depth	Tree	order
2cm (1%)	1170	1	2cm (1%)		1
4cm	1230	2	4cm		4
8cm	1910	3	8cm		2
16cm	2300	4	16cm		3

Close gate and set up fence.

tonzi	7931AFE	402165	574B4B	402FF3	574632	7A432E	7A3C6E	7A3B40	7A4AAA
19-Nov-06	323
	SM
0-15	11.4	11.8	24.9	12.1	6.5	14.7	14.7	13.6	7.0
15-30	21.8	17.5	22.8	15.2	14.2	10.9	19.3	15.7	5.3
30-45	19.6	7.6	3.4	13.4	3.4	9.8	19.2	16.9	14.0
45-60	11.1	4.6	4.6	10.8	13.6	11.3	15.4	19.2	11.0

	A6D882B	A3D04E8	A6D72F5

0-15	23.7	21.2	8.5
15-30	7.7	13.3	14.9
30-45	15.9	17.6	13.6
45-60	15.2	10.1	3.2

vaira	57318a	7933dee
0-15	5.6	10.9
15-30	13.6	16.7
30-45	12.5	14.4
45-60	20.1	18.8