Field Notes

<--2020-02-20 09:30:00 | 2020-03-05 09:15:00-->
Other sites visited today: Vaira | Tonzi | Mayberry

Bouldin Corn: 2020-02-27 09:45:00 (DOY 58)
Author: Daphne Szutu
Others: Joe

Summary: Fixed phenocam network cable, cleaned 7700 spray nozzle, downloaded PA data

2020-02-27
Bouldin Corn

Joe and I arrived at 9:45 PST after dropping Ariane off at Mayberry for water samples. It was mild and mostly clear with hazy horizons. I didn't see any more puddles in the field. While we were there, a flat-bed truck came to pick up the dumpster by the Duck Club building. Tyler also arrived to check on his equipment.

This was a stop on our way to Ione to check on a few issues we noticed in the most recent data download from last week.

In the last data download, there were only a few phenocam photos stored on the new card. When we arrived today, there were no photos on the card, and the phenocam LED light on the switch was off. We could not connect to the phenocam's website. Joe re-crimped the ethernet connector at the phenocam, which fixed the connection problem. The phenocam clock was 1 min off; I synched it with the laptop time.

We also noticed that the 7700 RSSI had been steadily decreasing in the last data download, even though the wash reservoir was 3/4 empty. The spray nozzle wasn't spraying well when we tested it, so Joe took it apart and used canned air to clear out some crushed black bits (ants?). The nozzle tested fine afterwards, but the pump seemed to be low on power, maybe because the heaters were on. Joe cleaned the 7700 mirrors again for good measure.

I downloaded met data and checked the barometer data and wiring because there had been a few spikes in the last data download. The data and wiring looked ok today, but this mux has pluggable strips, so maybe the strip was loose.

I downloaded the PurpleAir data after disconnecting the power jack in the CR10X box. The card had the correct number of files. After reconnecting the power jack, the sensor did not start up. After waiting a while, we disconnected and reconnected the mini-USB connector at the sensor, which worked to restart the sensor. In the future, we should just keep the sensor powered all the time.

As we were climbing down the taller, the 7550 box fell down because the hose clamp on the top bracket broke. There is no bottom bracket on this 7550 box. Joe replaced the hose clamp and I checked the GHG numbers, which looked fine.

LI-7500 readings:
CO2 440ppm
H2O 440ppm
T 16.8C
P 102.2kPa
SS 101
LI7700 readings:
CH4 2.2ppm-->2.7 after cleaning
RSSI 21-->47 after spraying-->85 after Joe's cleaning

We left at 10:30 to head to Tonzi/Vaira.

0 photos found

6 sets found

17 BC_met graphs found