Field Notes

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Tonzi: 2013-05-30 10:00:00 (DOY 150)
Author: Joe Verfaillie
Others: Siyan

Summary: MD9 okay - no changes, standard fieldwork, serviced zcams, removed east sap flow equipment, no Floor CR1000 data - winflux data okay

Tonzi
2013-05-30

I arrived about 10am PDT with Siyan. It was clear, sunny and warm with a light breeze. There are still some purple and yellow flowers with a sprinkling of green in some of the low spots. But otherwise the grass and ground is very dry. The trees still look good.

We checked on the MD9 network. It seems to have been running well since my last visit so I made no changes.

I serviced the zcams. Test photos were taken at 10:37, 10:51, and 10:56 PDT for cameras 3, 2, and 1.

I calibrated the LI820 on the CO2 profiles system. Last cal was 2013-05-15. Zero offset was 0.5ppm and span offset was 4ppm. The N2 tank was at 2100psi and the 404.02ppm CO2 tank was at 1750psi. The coefficients were: zero old 0.8810, new 0.8812, span old 0.8447, new 0.8505

I removed the box, multiplexor, and solar panel from the east sap flow station. The sensors will have to stay in place until the ground gets wet again.

I pulled a few more of the old Battles litter traps. I left the wire inside the tower cow fence. I also picked up some odds and ends.

I cleaned the radiation sensors on the tower top.

The CFM card in the Floor CR1000 was not completely inserted and collected no data. But winflux is still running on that system so no flux data was lost.

I fixed a bad spot in the cow fence around the Floor site.

The tram looked good.

Field Data

No tank data

Well Depth

Date	Location	Depth (feet)
2013-05-30	TZ_floor	27.45
2013-05-30	TZ_road	36.78
2013-05-30	TZ_tower	32.7

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)
2013-05-30	1	25.1
2013-05-30	102	20
2013-05-30	2	18.5
2013-05-30	245	14.3
2013-05-30	3	21.4
2013-05-30	4	4.9
2013-05-30	5	24.5
2013-05-30	7	18.5
2013-05-30	72	15.8
2013-05-30	79	18.1
2013-05-30	8	9.5

Water Potential - mode: raw

Time	Species	Tree	readings (bar)
2013-05-30 12:00:00	OAK	102	-17	-22	-15
2013-05-30 12:00:00	OAK	35	-25	-23	-26
2013-05-30 12:00:00	OAK	92	-21	-27	-25
2013-05-30 12:00:00	PINE	OLD	-20	-8	-7	-12
2013-05-30 12:00:00	PINE	YNG	-9	-7	-6