Field Notes

<--2012-09-19 05:30:00 | 2012-10-09 06:00:00-->
Other sites visited today: Tonzi | Vaira

Tonzi: 2012-10-09 05:50:00 (DOY 283)
Author: Siyan Ma
Others: Joe

Summary: Pre-dawn water potential, Oaks 80-90% senescent, standard field work, Joe installed CR1000s at Tonzi, Tram broken, Tower IRGA fouled and cleaned.

When: Date: 10/09/2012 , Day: 283 , Watch Time: 5:50 am .
Where: Tonzi/Vaira Ranch
Who: Siyan, Joe
Weather: very cold in the early morning; clear, sunny
Phenology: golden grass litters; I heard a kind of sounds as if litters were breaking; Oak leaves 80% turned into yellow and brown. It is about the time of leavf-off.

1) Liukang’s tree 2) A pine and oak seedling are next to each other.

2) Vaira

Summary

Pre-down water potential: oak ~-50 bar; pine needle: ~-20 bar.
Checked and downloaded data at Tower, Floor, and Vaira: IRGA at Tonzi Tower showed ~4v for H2O channel. Joe cleaned up the surface.
Joe installed CR1000 at Tonzi tower and floor sites.
Calibrated Li-800 in the field.
Read dendrometers
Measured soil moisture
Measure groundwater well:

Date	DOY	Location	Depth without the black thing (feet)
10/09/2012	283	Floor	29.6
		Tower	34.7
		roadside	37.8

Vaira_Grass 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.)

CR1000: need swap the card, but I forgot bringing a new one. – Joe downloaded data to his PC and put the card back.

downloading data
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 (No power in the early morning; battery may be dead).
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!
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 900 psig; flow 18 psi; 421.63 ppm.
N₂ 1000 psig; flow 20 psi.
Is the pump running‌ YES!

Readings before calibration:

Zero:

Span:

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.)

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

CR23X3 – floor-Met
CR23X6 – tower-Met
CR10X2 – floor-Met

Soil CO₂ profile: CR23X5 – soil CO₂ profile

Close gate and set up fence. YES!

tonzi	7931AFE	402165	574B4B	402FF3	574632	7A432E	7A3C6E	7A3B40	7A4AAA
10/9/2012	283
	sm
0-15	3.3	1.4	#DIV/0!	4.5	5.3	0.9	1.0	#DIV/0!	3.6
15-30	12.0	9.5	12.5	13.5	6.6	7.4	14.4	11.8	3.2
30-45	18.7	11.5	11.1	16.9	20.1	9.1	13.7	14.8	13.1
45-60	#DIV/0!	2.1	13.5	13.9	11.1	10.5	14.6	22.7	11.0

	A6D882B	A3D04E8	A6D72F5

0-15	5.6	3.3	1.1
15-30	5.7	1.1	60.1
30-45	15.1	13.6	14.3
45-60	15.1	17.1	13.1

vaira	57318a	7933dee	00000128B97F3	00000128B8072	00000128BDDE8
0-15	broken	0.4	1.95	0.4	0.85
15-30	broken	7.8	5.1	4.1	2.15
30-45	broken	13.4	3.1	9.7	11.7
45-60	broken	26.9	14.5	8.8	16.9





Tonzi
Dendrometer

Date	Day	Tag #	Reading (mm)
10/09/2012	263	1	21.5
		2	14.4
		3	18.1
		4	3
		5	23.9
		7	15.2
		8	6.6
		72	10.6
		79	10.2
		102	14.9
		245	10

Dendrometers installed by Gretchen group

Field Data

No tank data

Well Depth

Date	Location	Depth (feet)
2012-10-09	TZ_floor	29.6
2012-10-09	TZ_road	37.8
2012-10-09	TZ_tower	34.7

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)
2012-10-09	1	21.5
2012-10-09	102	14.9
2012-10-09	2	14.4
2012-10-09	245	10
2012-10-09	3	18.1
2012-10-09	4	3
2012-10-09	5	23.9
2012-10-09	7	15.2
2012-10-09	72	10.6
2012-10-09	79	10.2
2012-10-09	8	6.6

Water Potential - mode: raw

Time< h>	Species	Tree	readings (bar)
2012-10-09 05:40:00	OAK	UNKNOWN	-55	-55	-40	-27	-20	-25
2012-10-09 05:40:00	PINE	UNKNOWN	-15	-10	-22	-22	-27	-10
2012-10-09 10:40:00	OAK	UNKNOWN	-65	-45	-41	-38	-42	-37
2012-10-09 10:40:00	PINE	UNKNOWN	-21	-20	-12	-25	-6	-10
2012-10-09 12:40:00	OAK	UNKNOWN	-52	-33	-41	-33	-35
2012-10-09 12:40:00	PINE	UNKNOWN	-7	-7	-6	-6.5	-7	-22

OAK_UNKNOWN	Whole Study	20121009	05:40:00	twig/leaf cluster	-3.7	1.54	6
OAK_UNKNOWN	Whole Study	20121009	10:40:00	twig/leaf cluster	-4.47	1.04	6
OAK_UNKNOWN	Whole Study	20121009	12:40:00	twig/leaf cluster	-3.9	0.81	5
PINE_UNKNOWN	Whole Study	20121009	05:40:00	twig/leaf cluster	-1.77	0.71	6
PINE_UNKNOWN	Whole Study	20121009	10:40:00	twig/leaf cluster	-1.57	0.74	6
PINE_UNKNOWN	Whole Study	20121009	12:40:00	twig/leaf cluster	-0.9	0.63	6