Field Notes

<--2013-09-18 09:15:00 | 2013-10-16 10:00:00-->
Other sites visited today: Sherman Island | Twitchell Rice | DWR Corn | West Pond | Twitchell Alfalfa

Mayberry: 2013-10-02 10:15:00 (DOY 275)
Author: Cove Sturtevant
Others: Sara, Patty

Summary: Standard site visit and data download. Otters pulled out 7700 washer tube, reconnected. Confirmed that tule/water RNET data streams have been switched since inception. Rechecked sonic direction.

Mayberry
2013-10-02

We arrived about 10:15 PDT. It was sunny and warm with a mild breeze. Sara and Patty went out to the tule tower to collect water samples and clean the sensors while I attended to the tower and downloaded data.

There was a lot of cottony cattail material stuck to the tower, but none seemed to be blocking the gas analyzer paths. The otters pulled out the 7700 washer tubing at the connection to the reservoir. They arent interested in the tubing itself but rather the solar shielding, so I clipped the solar shielding back to where it was zip-tied to the tower.

In looking at the Met data recently, I thought that the RNET measurements over water and over the tule patch might be swapped, so Sara did a hand-cover test for me while I watched the readings. They were indeed switched, and I think this has been the case since the tule tower was erected (evidence of such in the data). I will make the appropriate change in the Met code.

Finally, Ive been playing with the footprint from Mayberry, and wanted to precisely double-check the sonic direction. The North notch on the sonic was measured at 333 degrees North (magnetic).

7500 readings:
CO2: 417 ppm (415 after cleaning)
H2O: 620 mmol m-3 (560 after cleaning)
signal strength = 96.0% (97.4% after cleaning)
t: 20.2 C
p = 101.6 kPa
sos = 344.0 m s-1

Current 7700 readings:
CH4 = 2.0 ppm (same after cleaning)
RSSI = 21.3% (87 after cleaning)
The reservoir was full. I topped it off.

MET looked good.
Cleaned solar panels.

1 photos found

Cove on site
MB_autocam_20131002_1015.jpg ( 2013-10-02 10:15:02 ) Full size: 1920x1440
Cove on site

Graphs display:
11 sets found

7 MB_flux graphs found

Sonic Wind

LI7700 mV signals

Counts

LI7700 CH4 from analog signal

LI7500 CO2 and H2O

LI7700 CH4 from digital signal

CO2 in ppm

No data found for MB_met.
27 MB_tule graphs found

MB Tule Tower: Open Water 2 (3/1/11-3/23/17)

MB Tule Tower: Open Water 1 (3/1/11-2/21/13)

MB Tule Tower: Tule Temps 2 & 3 (3/1/11-3/19/14)

MB Tule Tower: Tule Temps 1 (3/1/11-3/19/14)

Mayberry Tule Tower: Solar Radiation

Mayberry Tule Tower: Disolved Oxygen

Mayberry Tule Tower: IRT and Sensor Temp

Mayberry Tule Tower: Volts and RH

LED NDVI Sensor

Water CO2

Water Pressure

Fluorometer Data

Mayberry pCO2 Profile

Water Temperatures

Air Temperatures

Air Pressure

4-Way Radiometer

MB Tule Tower: Open Water 1 (2/21/13-3/19/14)

MB Tule Tower: Tule Temps 1 (3/19/14-now)

MB Tule Tower: Open Water 1 (3/19/14-now)

MB Tule Tower: Tule Temps 2 & 3 (3/19/14-3/23/17)

MB Tule Tower: Tule Temps 2 (3/23/17-now)

MB Tule Tower: Tule Temps 3 (3/23/17-now)

SRS NDVI Channels

SRS NDVI

Net Radiation

Conductivity

Can't check MBWPEESWGT_mixed
1 MB_cam graphs found

Mayberry Autocam GCC

Can't check MBEEWPSWEPGT_cam
Can't check SIMBTWEE_met
No data found for MB_minidot.
Can't check MBSWEEWPBCBA
1 MB_processed graphs found

Mayberry processed CO2 Fluxes

Can't check MB_fd
1 MB_fd graphs found

Water Forced Diffusion CO2 Flux