When: Date: Feb 8, 2005 , Day: 39 , Watch Time: 1055 (Vaira) .
Where: Tonzi/Vaira Ranch
Who: Siyan and Jorge
Weather
Phenology

Tasks

1. check Flux systems
2. swap Li-7500 from Tower site (remove: SN#42; install: SN#35)
3. Spectrum measurements
4. soil moisture
5. Alex’s samples
6. leave samples: Vaira grass, Tonzi understory grass

Vaira_Grass Site

1. Fence and gate power: >12.0 v.
2. Panel and Batteries: 13.1 v; 19.6 amps; 2.1 amps.
3. No screen. Ted was there to install new computer system.
4. Download data. The filename started with “L”. It needs to be changed. In addition, Ted will download Met data from CR23X directly because of no hook with MD9. The big Met data file need split into day-based files.
5. Check CR23X with two multiplexers – “E10 22 low battery”

Loc 74: Sys_vot = 2.0208
Loc 75: PC_start = -1.1535
6. Ted was there when we left.

Tonzi_Tower Site

1. Fence and gate power: >12 v.
2. Panel and Batteries: 13.5 v; 0.0 amps; 2.9 amps.
3. No screen cable, so no way to check. Sounds working though.
4. Remove SN# 42 ; install SN# 35
5. Check calibration cylinders;

CO₂ 1500 psig; flow 10 psi.
N₂ 500 psig; flow 10 psi.

1. close gate and set up fence.

Toniz_Floor Site

1. Fence and gate power: >12 v.
2. Panel and Batteries: 13.9 v; 23.6 amps; 2.5 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	14:23:24
Path/File name	D:FL5_39.flx
	mean	std		mean	std
w	.15	.27	Ts	17.228	.327
u	.24	.494	H2O	2.363	.076
v	.64	.475	CO2	1.737	.02

1. Download data
2. Close gate and set up fence.

tonzi		7931AFE		402165		574B4B	402FF3	574632	7A432E	7A3C6E	7A3B40	7A4AAA
D039
Feb. 8, 2005		Siyan
0-15		40.7		36.1		40.4	28.1	37.2	32.6	26.4	32.6	23.6
15-30		39.4		41.7		41.0	38.5	37.1	26.7	28.2	30.8	21.1
30-45		37.2		41.4		41.0	37.0	44.3	35.7	28.6	33.0	31.9
45-60		40.2		53.2		49.0	46.2	42.6	33.7	42.0	44.5	26.2
vaira		57318a		7933dee
0-15		14.3		32.7
15-30		26.7		30.4
30-45		29.5		29.7
45-60		30.8		35.2
A6D882B	A3D04E8		A6D72F5
34.9	32.1		19.0
27.9	31.4		33.2
35.9	34.3		34.3
41.5	47.6		42.9