Field Notes

<--2020-04-17 09:00:00 | 2020-04-25 09:00:00-->
Other sites visited today: Sherman Barn | Sherman Wetland
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Mayberry: 2020-04-24 10:25:00 (DOY 115)
Author: Daphne Szutu
Others:

Summary: Regular data collection/cleaning, Isabel water samples, swapped miniDOT batteries, wiped off miniDOT sensor, precip bucket clogged--cleaned

2020-04-24
Mayberry

I arrived at 10:25 PDT. It was sunny and mild, with blue skies and a refreshing breeze. The vegetation patches are greening up around the edges, and the water level is higher than my previous site visit. The water level was 53 cm. I saw 3 otters swimming and diving away from the tower as I arrived.

I cleaned flux and rad sensors. There was a thin spiderweb covering the top 7700 mirror, which is probably why the wash reservoir was empty. I cleaned inside of the 7700 cap and evicted a spider. The precipitation bucket funnel was clogged with bird poop; I poked it out with some dry reeds. The wash reservoir was empty; I mostly refilled it. I collected 3 water samples for Isabel at 9:45 PST. This is the last set of vials from Isabel. Ari will help us get more of the appropriate vials.

I downloaded met, cam, miniDOT, and USB GHG data. I swapped the miniDOT and water level sensor desiccants. Since Ari had noticed the miniDOT quality flag varying more in the last few weeks, I took off the miniDOT copper screen and wiped off the sensor. There was some litter and some worms underneath the screen, but nothing outrageous. I replaced the screen and swapped the miniDOT battery. I added a few precautionary mothballs to the datalogger box.

I measured the locations of the eddy sensors for Joe. I'm using the scaffolding corner post as (0,0), the long side of the scaffolding as x and the short side as y.
Sonic: -13cm, 5cm
7700: 10cm, -10cm
7500: 25cm, 21cm
HMP: 39cm, 19cm

LI-7500 readings:
CO2 416ppm
H2O 433ppm
T 26.1C
P 101.8kPa
SS 109--> 112 after cleaning --> reset to 100 in 7550 software
LI7700 readings:
CH4 2.1ppm --> 1.95 after cleaning
RSSI 1-->87 after cleaning

I left at 11:30 PDT.

2 photos found

20200425MB_SedPoints.jpg ( 2020-04-25 13:57:04 ) Full size: 1440x1920
Sedpoints installed at the Tower color coded according to the depth