Field Notes
<--2021-04-08 00:00:00 | 2021-04-15 09:30:00-->Sherman Wetland: 2021-04-14 12:30:00 (DOY 104)
Author: Patty Oikawa
Others:
Summary: LGR maintenance, installed new praxair cylinder
| 12:30pm arrival Installed new Praxair CO2 tank from the Berkeley lab Changed program back to sample cal gas for 300 seconds 1x per day New Praxair: CO2 = 442.90 ppm D13 C = -53.4 per mil D18O= -154.17 per mil H2O= 549.9 ppm--*looks high Gas temperature =44.5 Celsius gas pressure=119.77 torr laser response =12.79 µs Reference gas main stage 18,00 psi secondary stage 24 psi *Remember with this regulator in the field = lefty close, righty open Laser adjustment looks OK tower readings: CO2 for 428ppm delta 13 C -27.98 Delta 180-153.75 water vapor 1967.8ppm Water is definitely reading high -not sure why --we could try replacing the dryrite perhaps some water got into the laser Need to calibrate with NOAA standard asap |
7 photos found
siwetland_2021_04_15_094405.jpg ( 2021-04-15 09:45:36 ) Full size: 1296x960
Camilo, Ari, and Julie sampling open water location
siwetland_2021_04_15_091405.jpg ( 2021-04-15 09:15:38 ) Full size: 1296x960
Inflatable raft used during methane hotspot sampling
siwetland_2021_04_14_114405.jpg ( 2021-04-14 11:45:46 ) Full size: 1296x960
Patty on site
siwetland_2021_04_15_104405.jpg ( 2021-04-15 10:45:38 ) Full size: 1296x960
Methane hotspot sampling
siwetland_2021_04_15_101405.jpg ( 2021-04-15 10:15:48 ) Full size: 1296x960
Methane hot spot sampling
siwetland_2021_04_15_114405.jpg ( 2021-04-15 11:45:38 ) Full size: 1296x960
Methane hotspot sampling
siwetland_2021_04_15_111405.jpg ( 2021-04-15 11:15:46 ) Full size: 1296x960
Methane hotspot sampling
7 sets found
Can't check MBWPEESWGT_mixed
Can't check MBEEWPSWEPGT_cam
16 SW_met graphs found
4 SW_flux graphs found
Can't check MBSWEEWPBCBA
Can't check SW_Temp
14 SW_Temp graphs found
3 SW_arable graphs found