Field Notes
<--2024-12-03 11:00:00 |Phenocam link: Searching...
Eden Landing: 2025-01-08 10:45:00 (DOY 8)
Author: Patty Oikawa
Others: Daphne, Joe, Eddie, Inbar, Monica, Ramon
Summary: Re-leveled tower, new guy wires, re-wired thermocouples, Bowen ratio for Carlos, Cleaned lateral flux station, Calibrated EXO pH and wiper
| We arrived around 10:45am Re-leveled tower after storm damage. Joe lifted the tower and we slid 3 bricks + 1 square of 2” wood under the back feet of the tower (close to levee) which worked really well We installed new guy wires on corners of both the main tower and solar tower Joe pulled the Arable sensors, kept the met sensors for ewaste and we threw away the mounting posts Monica Ramon and Patty removed Monica’s damaged boardwalks. Monica will return with Emilio to replace these. Still need to replace the phenocam power wires and put into new conduit Also forgot to bring the upward PAR sensor-try to remember for next time Eddie and Patty installed new tide gauge next to boardwalk and pressure transducer well. Patty pulled the pressure transducer and cleaned it. The well seems to be full of mud-need to keep an eye on this as the data have been drifting over the past year. May need a new well. Eddie Cleaned and leveled the 4 way radiometer. Has been giving bad data lately, Joe couldn't find anything wrong with LW_out. Bad sensor? Next time swap it out and maybe send back for factory calibration. Need to calibrate 7500 soon. Eddie downloaded GHG data, met and phenocam and re-filled 7700 reservoir. 7700 Pre-clean RSSI: 34%; Post clean: 70% 7500 Pre-clean SS: 100%; Post-clean SS: 100%; CO2=428ppm Joe worked on the met datalogger: All TC rewired from red high blue low to blue high red low. 1-15, 19, 22 look good. 16 is missing - moved to 25? Ones with yellow tape (2 sets of three) all seem weird bad values or too high. But these are for measuring water temp when the wetland is flooded so values may look strange when wetland is drained. Leaf wetness disconnected. It was sharing ports with NR01 U11,12. I don’t think this works. PRT went from 18.0 to 18.7 PAR_out goes in AM16/32 port 8 jumper wire currently in place. Updated the tower CR6 met program with Bowen ratio stuff. We got to the lateral flux station around 13:30 PST. It was super low tide and we could see the three tubes where the EXO, pCO2, and water level were installed. Patty, Inbar, and Eddie worked on pulling up the EXO, pCO2, and water level sensor for routine cleaning. Eddie downloaded the 5min EXO data via bluetooth to his laptop. Daphne downloaded the CR6 data and will send it to Inbar. There was no LED light on at all on the EXO DCP adapter (should be blinking at 1Hz) and there was no 30min EXO data on the CR6 datalogger. She replaced the EXO DCP adapter with a spare from Dennis's lab and the LED light started blinking, although it seems to miss a few blinks every minute or so, so probably a loose power connector somewhere. Th EXO is set to sample every 5 minutes so the intermittent blinks do not seem related to the EXO being busy. Next step would be to replace the black screw terminal strip with something heartier like a pluggable power strip. Inbar throughly cleaned the EXO probes and she and Daphne worked on calibrating the pH sensors and the wiper with Daphne's computer connected through the DCP adapter. Both Eddie's and Daphne's laptops were having trouble connecting to the EXO through Bluetooth. Daphne stopped the deployment before we could do the calibration, but the EXO continued to wipe randomly (maybe once a minute)--maybe related to intermittent power? But they never lost connection to the sonde during calibration. They did a 3-pt pH calibration and adjusted the wiper "parking position". There is one EXO port without a port plug. Daphne will bring a spare for next time. Daphne restarted the EXO deployment in Kor and Patty and Inbar reinstalled all of the channel sensors. Daphne ejected the microSD card, moved the files to her laptop, and reinserted the empty card. She sent a new program (v20241206) to the CR6 that saves 30-minute averages instead of the sample at the 30-minute time point. The tide was still going out around 15:00 PST. Patty got in the water to look for the ADCP. She confirmed that the cable was still securely connected and cleared out a bit of mud from the edges. We're still not able to connect directly through the laptop and nothing is coming through the datalogger. Patty will e-mail Kyle N. for more help. We left around 13:30 PST. |
3 photos found
20250108EL_DataloggerWiring1.jpg ( 2025-01-08 14:06:43 ) Full size: 1440x1920
Datalogger wiring at EL lateral flux station
20250108EL_DataloggerWiring2.jpg ( 2025-01-08 14:10:16 ) Full size: 1440x1920
Datalogger wiring at EL lateral flux station showing the serial connector for the ADCP
20250108EL_LowTide.jpg ( 2025-01-08 13:37:07 ) Full size: 1920x1440
Super low tide at lateral flux station. The EXO, pCO2, and water level sensors are mounted within the tubes at the bottom of the beam.
1 sets found
12 EL_met graphs found