Field Notes

Gilbert Tract: 2023-05-17 08:35:00 (DOY 137)
Author: Daphne Szutu
Others: Robert

Summary: Regular data collection/cleaning, swapped AMP 7550 for our 7550 fresh back from the factory, ADCP has "high tilt values" error

2023-05-17
Gilbert Tract

Robert and I arrived at 8:35 PDT. It was mild and sunny with a cool breeze. The wetland is continuing to green up and the tules in front of the tower had flowers. The staff gauge read 68cm at 8:05 PST. Robert trimmed some of the reeds down around the tower.

I downloaded met, cam, USB GHG, and miniDOT data. Robert cleaned flux and rad sensors. The wash reservoir was 60% full and refilled. There were a few ants exploring the met box so I left a mothball in for them.

I swapped the LI-7550 today. The old one (sn AIU-1039) is an AMP unit we borrowed and the fresh one is our unit that just came back from the factory after a power board repair (sn AIU-1866).

I uploaded the most recent config file for 7500 sn 0065 (2023-04-10), updated the pressure coefficients, and changed its name from "BC-1866" to "GT-1866". I restarted the box, connected the 7700 in the software, and confirmed that the USB was logging.

old box sn AIU-1039: 436ppm CO2, 701mmol/m3 H2O, 17.6C, 101.2kPa,111SS after cleaning
new box sn AIU-1866: 435ppm CO2, 673mmol/m3 H2O, 17.1C, 101.1kPa,112SS --> reset to 100

We headed to the channel to download Flo's data around 9:17 PDT. I downloaded data, reset its clock to match the laptop time, and restarted logging. There was an error message "high tilt values" because roll=-5.1 degrees after Joe and I adjusted its mount last time to face it slightly downward toward the channel bottom. It should be ok but I'll check with Ari, Dennis, and Mark Stacey to make sure there's no scientific reason it needs to be exactly <5 degrees.

We left at 9:25 PDT.

0 photos found

7 sets found

Can't check MBWPEESWGT_mixed
Can't check MBEEWPSWEPGT_cam
16 GT_met graphs found