Field Notes

Mayberry: 2017-04-27 12:30:00 (DOY 117)
Author: Daphne Szutu
Others: Sam Chamberlain

Summary: Data collection/cleaning, swapped 7500, water level is low

2017-04-27
Mayberry

We arrived at 12:30. It was sunny, mostly clear, and breezy. They've mowed the road between the levee and the tower path. The path to the tower still has tall grass. The wetland is greening up.

The water level is low; the water level was up to Sam's knees. The top minidot/eos CO2 probe were out of the water. The HOBO conductivity probe was also out of the water so Sam lowered the sensor. He also lowered the fluorometer to lowest point possible and tilted it under water to try to get air bubbles out. We cleaned the flux and radiation sensors.

I collected the USB GHG and camera data. I forgot to bring the CS I/O cable, so I did not download the met data.

I swapped the LI-7500: sn 1594 came down, sn 75H-2180 went up.

LI7500 readings:
CO2 410.4 umol/mol --> 418 after swap
H2O 512.1 mmol/m3 --> 432 after swap
T 19.7 Celsius --> 20.4 after swap
P 101.6 kPa --> 101.5 after swap
SS 100.7 -> 95 after swap

LI7700 readings:
CH4: 1.92
RSSI: 42.0 -> 69 after cleaning

We left at 13:15.

1 photos found

20170427MB_lowwaterlevel.JPG ( 2017-04-27 12:44:05 ) Full size: 1080x1440
Low water level at Mayberry as Bryan is draining and then refilling to correct for high salinity. Sam is getting air bubbles out of the fluorometer.