Field Notes
<--2009-09-01 10:17:00 | 2009-09-22 09:30:00-->Other sites visited today: Sherman Island
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Twitchell Rice: 2009-09-14 12:00:00 (DOY 257)
Author: Joe Verfaillie
Others:
Summary: LGR returned to high flow and 10Hz, Changed CR23x program, swapped broken 40 gage FWTC, talked to Jim Casey, harvest may be 3 to 4 weeks away.
| Twitchell
9/14/2009 Arrived about noontime. Mostly clear, sunny, gusty breeze. Rain has knocked down the dust a bit but already drying out. Rice looking yellow and heavy. The box had a little puddle of water on the top but no signs that any water had gotten inside. Everything was running and seemed to be in good condition. Water level didn't seem any lower than usual. No rain reported in data file - need to check to make sure tipping bucket is working. Radiation sensors looked clean. LGR pressure was a little low. Switched to low flow and cleaned external 2um and 40um filters – not very dirty. Added water trap in tubing at mid height on the tower. Returned to high flow and 10Hz. Downloaded all data before changing CR23x program. I added new input locations to display radiations and soil heat fluxes in standard units instead of millivolts. These are for display only and no changes were made to the stored values. Copied data and swapped cards. Some photos from kite. Swapped broken 40 gage FWTC with working 36 gage FWTC. Stepped on and crushed crayfish hiding in grass at tower base. I talked to Jim Casey morning of 9/15. Water was turned off on our field and most other fields yesterday morning (9/14). Water still on field 5 and some of the varietals. Water should drain slowly for a week, then next week they may pull the boards that will cause the fields to drain faster. Harvest may be 3 to 4 weeks away yet. The generator that runs the pumps and powers our tower should continue to run until the fields are re-flooded for winter, but it is unclear whether the generator will run continuously over winter or not. The rice variety planted in our field is M-104. See the following link for some good details on this variety: http://www.carrb.com/Variety/M-104.htm |
10 photos found
20090715TW_NewLocationPanoWide.jpg ( 2009-09-15 07:48:50 ) Full size: 5713x1480
SUV on the edge of the rice field
20090914TW_KiteNorthOfTower.jpg ( 2009-09-14 12:17:51 ) Full size: 2048x1536
Joe and eddy tower at edge of the rice field from kite camera
20090914TW_KiteRoad2.jpg ( 2009-09-14 11:29:42 ) Full size: 2048x1536
Joe and rice site from kite camera
20090914TW_KiteRoad3.jpg ( 2009-09-14 11:30:43 ) Full size: 2048x1536
Joe and rice site from kite camera
20090914TW_KiteSouthOfTower.jpg ( 2009-09-14 12:20:51 ) Full size: 2048x1536
View of rice field from kite camera
20090914TW_KiteTower.jpg ( 2009-09-14 12:18:52 ) Full size: 2048x1536
View of rice site from kite camera
20090914TW_KiteTowerFootprint.jpg ( 2009-09-14 12:21:51 ) Full size: 2048x1536
View of the rice field from the kite camera
20090914TW_KiteTowerRoad.jpg ( 2009-09-14 11:27:43 ) Full size: 2048x1536
Kite view of the rice tower and Joe
20090914TW_Tower.jpg ( 2009-09-14 12:15:53 ) Full size: 2048x1536
Eddy tower at the rice field with seeds heading
20090914TW_TowerBox.jpg ( 2009-09-14 11:21:44 ) Full size: 2048x1536
Eddy system at edge of rice field
6 sets found
12 TW_met graphs found
5 TW_flux graphs found
Can't check TWSI_mixed
Can't check SIMBTWEE_met
1 TW_cam graphs found
Can't check TATWBABCSB_cam