Field Notes

East End: 2020-03-05 12:05:00 (DOY 65)
Author: Daphne Szutu
Others: Ariane

Summary: Regular data collection/cleaning, adjusted 7550 clock +10 min, 7700 not connected--fixed, smoky horizons

2020-03-05
East End

Ariane and I arrived at 12:05 PST. It was a sunny, mild day with a breeze and hazy horizons. We smelled smoke. The water level was 20 cm, a little lower than before. There was a small wasp nest on the scaffolding post by the radiation boom.

Ariane cleaned flux and rad sensors. I downloaded met, camera, and USB GHG data. We dropped the resistor we use to turn the camera on/off. The wash reservoir was 30% full; we refilled it. There were wasps in the reservoir box.

I adjusted the 7550 clock 10 minutes (12:36-->12:26) to sync with the laptop time. I reset the 7550 box and had to re-connect the 7700 in the 7550 interface. The NDVI values have been funky, but the sensors looked fine.

We lowered the miniDOT a little because it was almost out of the water, and we raised the eosCO2 a smidge because its face was laying against the mud.

LI-7500 readings:
CO2 426ppm
H2O 536ppm
T 19.8C
P 101.9kPa
SS 95 --> 96 after cleaning
LI7700 readings:
CH4 2.04ppm
RSSI 45--> 82 after cleaning

We left at 12:35 PST. As we were leaving Twitchell Island to go to Sherman Island, we saw haze/smoke on the horizons to the north.

Back in the lab, I realized we are missing methane data for the last 2 weeks. The 7700 was not connected since the last site visit when we swapped a 7500.

1 photos found

EE_autocam_20200304_1200.jpg ( 2020-03-04 12:00:01 ) Full size: 1920x1440
Smoke on the horizon