Field Notes
<--2021-09-14 11:20:00 | 2021-10-05 08:00:00-->Other sites visited today: Bouldin Corn | West Pond | Bouldin Alfalfa | East End | Mayberry
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Hill Slough: 2021-09-23 07:25:00 (DOY 266)
Author: Daphne Szutu
Others: Ari
Summary: Regular data collection/cleaning, no water at the surface, swapped 7500 for calibration, changed eddy clock +1min, new gamecam from Ducks
| 2021-09-23 Hill Slough Ari and I arrived at 7:25 PDT. It was cold, but for once, not windy! There was some lingering fog over the hills to our west. Ducks Unlimited had put up a new gamecam up on the southwest corner of the scaffolding by our picam to watch the upcoming breach scheduled for the second half of October. As of mid-September, they have started putting water slowly on to give the salt marsh harvest mouse time to relocate. However, I didn’t see any signal yet from our water level sensor, which is 1.05m below the ground. In addition, the small slough that runs under the boardwalk is still completely dry. I downloaded met, camera, and USB GHG data. I downloaded FD data and cleared its memory. Ari cleaned flux and rad sensors and changed the desiccant for the WL desiccant. We swapped the LI-7500A for calibration: sn 75H-2667 came off and sn 75H-2176 went on the tower. I uploaded a new configuration file and updated the pressure coefficients. I changed the 7550 clock +1min to match the laptop time. I reset the 7550 and checked that the clock was still good. The reservoir was ¾ empty; we refilled it. There were some sleepy wasps inside. Ari decided that we should install the miniDOT and the eosGP sensor by the southwestern post of the platform below the datalogger. We tested that there was enough space for both sensors to slip between the platform edge and the chainlink fence. The sensors will hang in the water column, maybe a few cm above the ground surface. We may change the height depending on how high/low the water level is with the tides. LI-7500 readings (sn 75H-2667 --> sn 75H-2176): CO2 416ppm --> 436 (seems like a big jump) H2O 600ppm --> 597 T 13.2C --> 16.5 (also seems like a big jump, even though this sensor didn’t change...I guess that's just how much the temperature changed) P 101.6kPa --> 101.6 SS 98 --> 99 LI7700 readings: CH4 2.17ppm RSSI 23--> 72 after cleaning We left at 8:05 PDT. |
0 photos found
4 sets found
20 HS_met graphs found
4 HS_flux graphs found
1 HS_cam graphs found
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2 HS_Processed graphs found