Field Notes

<--2005-06-02 12:30:00 | 2005-06-23 10:30:00-->
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Tonzi: 2005-06-10 10:30:00 (DOY 161)
Author: Dennis Baldocchi
Others: Jose Fuater, Siyan

When: Date: June 10,2005 , Day: 161, Watch Time: 10:30pm .
Where: Tonzi/Vaira Ranch
Who: DDB, Jose Fuater, Siyan
Weather: clear, light wind, mild temp. Rained on Wed/Thur=great pulse
Phenology: dead grass in Vaira; grass still green in Tonzi. Grass not all dead. Notes flower and green weeds.

Summary

Flux system worked well, and data were downloaded.
Li-7500 was swapped in Floor site. (Remove #42, install #41)
DDB swapped a new power wire of Licor-7500 on the tower.

Vaira_Grass Site

Fence and gate power: > 12.0 v.
Panel and Batteries: 14.0 v; 2.6 amps; 1.9 amps.
Reading from Gillsonic screen before downloading data. (The value of H₂O and CO₂ should be in the range of 0 – 5 v.)

Time	10
Path/File name	D:\Data\V05_161.flx
	mean	std		mean	std
w	0.130		Ts	26.7
u	-.10		H₂O	3.17
v	.170		CO₂	1.72

4. Tsoil 19-17oC, Battery volt 11.6, Ta 21.3, Rh 65%, PAR -1699, PAR dif 159. theta 396-400, Levels OK/
5. Closed gate and set up fence.

Tonzi_Tower Site

Fence and gate power: >12.0 v.
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\T05_161.flx
	mean	std		mean	std
w	-.3		Ts	24.7
u	2.7		H₂O	3.4
v	1.65		CO₂	1.5

Check calibration cylinders;

CO₂ 1300 psig; flow 15 psi.
N₂ 1500 psig; flow 8 psi.

Check the values of CR10X datalogger

1	23	6	18.3	11	18.0
2	18.9	7	18.9	12	-
3	18.8	8	21.9	13	20.7
4	18.9	9	20.3	14	20.0
5	18.3	10	18.7	15	19.5

Check the values of CR23X datalogger

1	Panel Temp.(deg C)	25.7	10	RH(%)	59
2	Batt_V	12.7	11	Theta 1	625
3	ppcip(cm)	-	12	Theta 2	546
4	PAR_up(mv)	6.4	13	Theta 3	698
5	PAR_dwn(mv)	.45	14	Theta 4	530
6	PAR_calib(mv)	11	15	Theta 5	478
7	Rs(mv)	4.7	16	Theta 6	555
8	Rn(mv)	10.7	17	Theta 7	547
9	Temp(deg C)	20.2

close gate and set up fence.

Toniz_Floor Site
Everything OK.
Swap Licor-7500: remove #42, install #41

Tonzi
Dendrometer

Date	Day	Tag #	Reading (cm)
6/10/2005	161	71	22.5
		72	23.2
		77	--
		78	--
		79	23.0
		245	19.5
		248	17.9
		250	21.8
		255	23.0
		‌252‌	17.8 (new tag 102)

tonzi	7931AFE	402165	574B4B	402FF3	574632	7A432E	7A3C6E	7A3B40	7A4AAA
D161
10-Jun-05	SM
0-15	14.1	9.7	22.7	8.7	16.1	13.0	16.2	11.0	6.2
15-30	14.6	15.2	19.4	18.2	18.1	8.7	16.3	14.3	2.4
30-45	20.6	9.7	20.6	19.6	13.2	11.1	15.1	20.2	14.4
45-60	19.5	7.9	14.4	25.6	18.4	12.4	14.0	24.7	11.6

	A6D882B	A3D04E8	A6D72F5

0-15	21.2	19.0	7.4
15-30	11.0	11.8	13.7
30-45	20.9	22.7	18.0
45-60	25.0	24.8	6.7

vaira	57318a	7933dee
0-15	7.3	7.9
15-30	6.5	9.2
30-45	13.2	13.2
45-60	15.3	16.4