Field Notes

Mayberry: 2017-11-30 10:20:00 (DOY 334)
Author: Daphne Szutu
Others: Elke, Kyle

Summary: Regular data collection/cleaning, swapped LI-7500 for calibration, downgraded LI-7550 to v8.5.0, collected water samples for Isabel, re-wired Rnet sensor to new mux channel

2017-11-30
Mayberry

We arrived at 10:20. It was sunny and cool, clear and calm. The wetland looks browner than before.

Kyle cleaned the EC and radiation sensors; the tule radiometer set was much dirtier than usual (especially the incoming sensors), and the outgoing NDVI sensor was tilted at an angle. We refilled the wash reservoir; it was 2/3 full. There were some flies and a few sleepy wasps in the reservoir.

Elke collected water samples for Isabel at 10:25.

I collect met, camera, USB GHG, and miniDOT data. We need a new desiccant for the bottom miniDOT. Rnet (water) was dropping out, so I moved it from mux channel 18 to 30, and uploaded a new program, MB_Tyle_20171130.CR1.

We serviced the water sensors and Elke got in the water to get bubbles out of the fluorometer.

Before swapping the LI-7500, I downloaded the LI-7500 configuration file and downgraded the LI-7550 sn AIU-1285 from v 8.7.5 to v8.5.0.

We swapped LI-7500: sn 75H-2669 came down, and sn 0418 went up. I uploaded a new config file and updated the pressure coefficients.

LI-7500 readings:
(old sensor with v8.7.5 --> old sensor with v8.5.0 --> new sensor with v8.5.0)
CO2 418.8 ppm --> 415 --> 422
H2O 402 mmol/m3 --> 380 --> 362
T 14.6 C --> 14.2 --> 16.5
P 102.1 kPa --> 102.1 --> 102.1
SS 103 --> 104 --> 96.4

LI7700 readings:
CH4 2.08 ppm --> 2.07 after cleaning
RSSI 50 --> 77.3 after cleaning

We left at 11:05.

0 photos found

11 sets found

7 MB_flux graphs found