Field Notes
<--2011-12-28 11:30:00 | 2012-01-25 08:40:00-->Other sites visited today: Sherman Island | Mayberry
Twitchell Rice: 2012-01-17 09:30:00 (DOY 17)
Author: Joe Verfaillie
Others: Jaclyn, Sara, Juwon, Sean
Summary: Install LI7700, swap LI7500, Updraged CR1000 OS, new program, LGR pressure low.
| Twitchell
2012-01-17 I arrived about 9:30 with Jaclyn, Sara, Sean and Juwon. It was clear, sunny and super cold with little to no wind. There was almost half a cm of ice on the field water and some of it stayed until after 11am. There was a hawk sitting on the camera post when we arrived. We swapped the 7500. Sn 0041 came off and sn 0065 went on. I swapped internal chemicals and painted the box on sn 0065 before calibrating it. In painting the box I removed its mounting plate and forgot to reattach it. It still fit on the tower but not as well. Jaclyn cleaned the radiation sensors. We installed the new 7700 (sn TG1-0211) with the old 7550 box (sn AIU-0397). The 7700 head was mounted just northeast of the central post of the tower, downwind from the sonic and 7500 but upwind of the LGR inlet. The 7550 and washer box were mounted on a leg of the tripod. Power for the 7700 and 7550 was wired into the terminal strip in the data logger box which is currently powered by the solar system. I may need to add a 12VDC supply to power this from the generator. Data is sent to the CR1000 by SDM from the 7550 box. The CR1000 program was changed to add five channels from the 7700. RSSI from the 7700 was about 50 so I did not clean the mirrors. The CR1000 OS had to be upgraded to support the 7700 SDM function. CR1000 (sn 23865) had OS v16 on it I upgraded it to the newest version v24 The LGR read 10:47PST, 24.25C, 56.34Torr, 13.918usec, 10Hz, 2.133ppm I adjusted the bypass valve to bring the pressure up to 144.60. The flow seemed reduced at 56.34Torr, I could feel an increase of air flow from the pump as I opened the bypass valve. Cards swapped, data collected. The solar panels were washed. Jaclyn to water samples for Emily. |
15 photos found
TW_autocam_20120117_1845.jpg ( 2012-01-17 18:45:03 ) Full size: 3648x2736
view of field site
TW_autocam_20120117_1245.jpg ( 2012-01-17 12:45:02 ) Full size: 3648x2736
view of field site
TW_autocam_20120117_1115.jpg ( 2012-01-17 11:15:02 ) Full size: 3648x2736
LI7700 on tower, ice on water
20120117TW_BurningBiomass.jpg ( 2012-01-17 11:43:27 ) Full size: 4000x3000
Burning brush
20120117TW_FieldDiablo.jpg ( 2012-01-17 11:36:30 ) Full size: 4000x3000
Diable and smoke from burning brush
20120117TW_Installing7700.jpg ( 2012-01-17 11:33:26 ) Full size: 4000x3000
Installing new LI-7700
20120117TW_JaclynJoeTower.jpg ( 2012-01-17 11:35:05 ) Full size: 4000x3000
Installing new LI-7700
20120117TW_PARSensors.jpg ( 2012-01-17 11:35:34 ) Full size: 4000x3000
Ice on the water
20120117TW_SeanJuwon.jpg ( 2012-01-17 11:33:33 ) Full size: 4000x3000
Installing LI-7700 with Sean, Jaclyn and Juwon.
20120117TW_Tower.jpg ( 2012-01-17 11:38:57 ) Full size: 4000x3000
Installing new LI-7700
20120117TW_TowerTop2.jpg ( 2012-01-17 11:34:46 ) Full size: 4000x3000
Installing new LI-7700
20120117TW_TowerTop3.jpg ( 2012-01-17 11:35:59 ) Full size: 4000x3000
Installing new LI-7700
TW_plantcam_20120117_1000.jpg ( 2012-01-17 10:00:00 ) Full size: 2560x1920
view of field site
TW_autocam_20120118_1845.jpg ( 2012-01-18 18:45:02 ) Full size: 3648x2736
view of field site
TW_autocam_20120118_1045.jpg ( 2012-01-18 10:45:03 ) Full size: 3648x2736
view of field site
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