Field Notes

When: Date: 4/24/2005 , Day: 115 , Watch Time: 13:00 .
Where: Tonzi/Vaira Ranch
Who: Siyan, Qi Chen
Weather: Cloudy
Phenology: Oak leaves full. Grassland blooming and heading out. Yellow flowers in Tonzi

Task

1. check Flux systems
2. Qi Chen:
3. soil moisture along transect
4. hemispheric photos
5. leave samples: Vaira grass, Tonzi understory grass
6. Alex’s samples

Summary
1. Three Flux systems worked well though CO2 and H2O concentration may still offset. Readings were

Vaira12:04:07 D:\data\V05_111.flx (Licor7500 SN 65 )	means	std
W	0.660	.195
U	.92	1.542
V	.73	.357
T	18.239	.59
H2O	1.891	.246
CO2	1.712	.114

Tower 13:07:52 D:\data\T05_111.flx
W	.698	.402
U	1.87	.841
V	.52	.925
T	17.547	.251
H2O	.139	.222
CO2	1.193	.209

Floor 12:50:24 D:\data\F05_114.flx (Licor7500 SN 42 )
W	-.1	.149
U	.42	.268
V	.15	.526
T	17.168	.206
H2O	2.518	.106
CO2	1.715	0.41

The flux filename showed on the screen was Day 111, but raw data were to Day 114.

tonzi	7931AFE	402165	574B4B	402FF3	574632	7A432E	7A3C6E	7A3B40	7A4AAA
D114
24-Apr-05	Siyan and Qi
0-15	25.0	15.1	27.8	12.2	22.4	23.6	18.7	17.9	11.7
15-30	32.2	25.0	31.1	27.0	26.1	18.7	23.2	25.2	13.7
30-45	32.7	36.3	37.3	29.2	42.4	23.0	21.6	28.1	27.8
45-60	37.8	54.9	55.3	49.8	41.2	25.4	35.7	43.1	21.8
	A6D882B	A3D04E8	A6D72F5
0-15	28.7	25.0	9.4
15-30	20.8	21.4	27.9
30-45	31.6	32.2	31.3
45-60	42.0	47.6	48.2
vaira	57318a	7933dee
0-15	6.8	10.8
15-30	17.2	20.5
30-45	20.7	21.9
45-60	23.4	28.1

2. Qi used two sets of LAI-2000 measuring LAI along 400-m transects
1) Leave one sensor on the tope the tower, holding tightly with a bondage
· SetUP: Rmt Above. sampling frequency =15 seconds. Sampling period = 1 hr.
2) Hold the one sensor in the level and do the “Below” measurement along “V” transects.
· SetUP: Rmt Blowe, Avg = 0. sampling frequency =
· Same mask as the tower one.
· Same direction as the tower one

4/22/2005 Siyan downloaded data files from the two Li-2000 sets and clean memory.
COMM.exe (modify F1 and F6)
FCT 33, select “STANDARD”
FCT 32
The number of files:
DDBset.dat
1 – compare two sensors on the top of the tower
2 – transect
3 – coming radiation measured in open area
4 – compare two sensors on the top of the tower
5
6
7
8
9
10
11
12

Qiset.dat
1 – compare two sensors on the top of the tower
2 – incoming radiation on the tower
3 –
4 –
5
6

Tonzi
Dendrometer
Date	Day	Tag #	Reading (cm)
4/24/2005	114	71
		72
		77
		78
		79
		245
		248
		250
		255
		‌252‌

Sample vial	What
MIBA-US-03.041
MIBA-US-03.042
MIBA-US-03.043
MIBA-US-03.044
MIBA-US-03.045
MIBA-US-03.046