Field Notes
<--2010-03-11 10:00:00 | 2010-04-08 13:30:00-->Other sites visited today: Sherman Island
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Twitchell Rice: 2010-03-18 09:30:00 (DOY 77)
Author: Joe Verfaillie
Others: Jaclyn
Summary: Ground sensors out of ground, accidentally left AC off, Jaclyn took soil samples.
| Twitchell 3/18/2010 Arrived about 9:30am with Jaclyn. Clear, sunny, strong wind out on the NNW, warm. The southern part of the field near the tower has been disked. Tractors will continue to work in the field for the next couple weeks, so our ground sensors remain out of the ground. I accidentally left the AC off in the box last time out so the box was hot ~91F. The LGR seemed fine though hot 9:59, 2.0326ppm, 9122.06ppm, 410.98ppm, 48.90C, 134.35Torr, 13.873usec Verizon seemed to be connected � it has been sending data sporadically. Computer and data loggers remain on standard time. No daylight savings time problems. Might need to reset the clock on the LGR at next calibration. Swapped in calibrated LI7500 � using SDM address 7 Sn Sn 0418 on - had to change SDM address to 7 Fixed the soil temperature probes. The above ground portions of the probes are painted white. Heavy equipment working at the pumps and drainage ditch south of the field. Jaclyn, cleaned the radiation sensors and took soil samples for respiration. Notes from Jacyln in an e-mail: "I took a soil profile at 5 depths: 2cm, 10cm, 18cm, 25cm, and 32cm below the surface. I'm still working on my methodology with the post hole digger/auger, so it's kind of difficult to get a perfectly evenly spaced profile, but I got as close as I could. I measured CO2/CH4 efflux in the lab using the LGR in a closed system immediately when I returned. I'll analyze the flux depth profiles later today or tomorrow, and will send out the results. " Left for Sherman about 11:30 |
3 photos found
20100318TW_NewCheckSmoke.jpg ( 2010-03-18 11:07:40 ) Full size: 2048x1536
Smoke on the horizon from the freshly tilled rice field
20100318TW_TowerFieldDisked.jpg ( 2010-03-18 11:07:02 ) Full size: 2048x1536
Equipment box and eddy tower at edge of plowed rice field
20100318TW_TowerPumpWork.jpg ( 2010-03-18 11:07:20 ) Full size: 2048x1536
Farm road and rice eddy tower
6 sets found
12 TW_met graphs found
No data found for TW_flux.
Can't check TWSI_mixed
Can't check SIMBTWEE_met
1 TW_cam graphs found
Can't check TATWBABCSB_cam