Field Notes

<--2011-09-23 10:00:00 | 2011-10-13 11:00:00-->
Other sites visited today: Twitchell Rice | Sherman Island | Mayberry

Tonzi: 2011-09-29 10:00:00 (DOY 272)
Author: Siyan Ma
Others:

Summary: Standard fieldwork, CO2 profile system not working, error message on Floor computer.

When: Date: 9/29/2011 , Day: 272 , Watch Time: 10:00 am .
Where: Tonzi/Vaira Ranch
Who: Siyan
Weather: clear
Phenology: yellow grass, green oak leaves, dry, dusty

Tonzi

Vaira:

Summary

checked and downloaded data at Tower, Floor, and Vaira
Swapped Li-7500 at TZ Tower and Vaira.
Calibrated Li-800 in the field.
Collected samples of oak leaves and pin needles
Read dendrometers
Measured soil moisture
midday water potential: seems lower than last time. Joe suggested that COSMOS data showed little moister recently.
Measure groundwater well:

Date	DOY	Location	Depth without the black thing (feet)
9/29/2011	272	Floor	25.5
		Tower	30.3
		roadside	34.7

Vaira_Grass Site

Fence and gate power: 12 v.
Panel and Batteries: 13.2 v; 11.0 amps; 3.8 amps.
Reading from Gillsonic screen before downloading data. (The value of H₂O and CO₂ should be in the range of 0 – 5 v.)

downloading data
swap Li-7500: install #42; remove #73.
Check the fans of air temp. and relative humidity sensors at Vaira. YES!
Check MD-9 system connections YES!
Check CR23X with two multiplexers

Check levels of Radiation sensors, clear up surfaces.YES!
Check rain gage, make sure not clogged. YES!
Closed gate and set up fence. YES!

Tonzi_Tower Site

Fence and gate power: 12 v.
Panel and Batteries: - v; - amps; - amps.
Reading from Gillsonic screen before downloading data. (The value of H₂O and CO₂ should be in the range of 0 – 5 v.).
downloading data YES!
swap Li-7500: install #65; remove #1594.
check the fans of air temp. and relative humidity sensors on the tower and the floor. YES!
Check rain gage, make sure not clogged. YES!
Check calibration cylinders;

CO₂ 1000 psig; flow 20 psi; 384.08 ppm.
N₂ 1500 psig; flow 30 psi.
Manually calibrate Li-800. Following Ted’s instruction: H:\IoneSavanna_2004\Tower_2004\CO2Profile\LI800_Calibration_Procedure_2Nov04.txt
Is the pump running‌ Yes, but no good readings!

close gate and set up fence. YES!

Toniz_Floor Site

Fence and gate power: 12 v.
Panel and Batteries: - v; - amps; - amps. (about 7:00 am local time)
Reading from Gillsonic screen before downloading data. (The value of H₂O and CO₂ should be in the range of 0 – 5 v.)

First see “Error message on” the screen. Restart the computer and works well.

downloading data YES!
Check MD-9 system connections YES!

CR23X3 – floor-Met (need to display the readings on the screen)
CR23X5 – soil CO₂ profile
CR23X6 – tower-Met
CR10X2 – floor-Met

Soil CO₂ profile:

Reading from panels of analyzers

depth	Open	order	depth	Tree	order
2cm (1%)	790	1	2cm (1%)	1140	1
4cm	550	2	4cm	1410	4
8cm	670	3	8cm	1590	2
16cm	630	4	16cm	3410	3

Close gate and set up fence. YES!

Tonzi
Dendrometer

Date	Day	Tag #	Reading (mm)
9/29/2011	272	72	21.9
		79	14.5
		102	6.2
		245	18.3
		250	X	(reset to 10.5 on May 7, 2009)
		1	15.2
		2	14
		3	12.1
		4	16.6
		5	22.9
		7	13.6	133
		8	5.0	11828
		71	X
		77	X	‌
		78	X	‌
		248	X	broken
		255	X	‌
		‌252‌	X	‌
		6	X

Notes: “X” means not working any more.
Dendrometers installed by Gretchen group

tonzi	7931AFE	402165	574B4B	402FF3	574632	7A432E	7A3C6E	7A3B40	7A4AAA
9/29/2011	272
	sm
0-15	5.9	1.5	8.2	5.2	11.1	5.0	8.8	3.0	4.9
15-30	12.8	8.2	14.0	10.7	9.9	7.7	14.5	12.2	4.6
30-45	17.0	11.6	11.7	14.0	10.8	9.5	15.2	16.1	13.0
45-60	#DIV/0!	1.3	14.6	13.4	10.2	11.4	16.3	25.4	10.7

	A6D882B	A3D04E8	A6D72F5

0-15	4.2	2.4	1.8
15-30	8.3	0.5	11.7
30-45	16.8	15.3	13.6
45-60	17.6	21.6	10.5

vaira	57318a	7933dee	00000128B97F3	00000128B8072	00000128BDDE8
0-15	broken	4.5	2.7	1.8	0.05
15-30	broken	15.6	9	5.2	3.6333333
30-45	broken	17.7	2.9	12.1	14
45-60	broken	30.6	14.9333333	8.73333333	14.566667

Field Data

No tank data

Well Depth

Date	Location	Depth (feet)
2011-09-29	TZ_floor	25.5
2011-09-29	TZ_road	34.7
2011-09-29	TZ_tower	30.3

No TZ Moisture Point data found

No VR Moisture Point data found

No TZ grass heigth found

No VR grass heigth found

Tree DBH

Date	Tag#	Reading (mm)

Water Potential - mode: raw

Time< h>	Species	Tree	readings (bar)
2011-09-29 11:56:00	OAK	UNKNOWN	-35	-23	-30	-26	-42.5
2011-09-29 11:56:00	PINE	OLD	-4.5	-17	-3	-18	-3
2011-09-29 11:56:00	PINE	YNG	-8	-3	-2	-10	-3

OAK_UNKNOWN	Whole Study	20110929	11:56:00	twig/leaf cluster	-3.1	0.77	5
PINE_OLD	Whole Study	20110929	11:56:00	twig/leaf cluster	-0.9	0.77	5
PINE_YNG	Whole Study	20110929	11:56:00	twig/leaf cluster	-0.5	0.36	5