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1538 DSCN0798.JPG (2007-08-31 17:32:12 ) Full size: 2048x1536
Cloudy sky. LED and PAR sensors mounted on a tower
1548 DSCN0832.JPG (2007-08-31 18:18:49 ) Full size: 2048x1536
From the top of flux tower. A pyranometer, net radiometer and PAR sensor
711 SI_webcam_2008057_0906.jpg (2008-02-26 09:06:04 ) Full size: 640x480
Bird on the diffuse PAR boom
752 SI_webcam_2008190_1737.jpg (2008-07-08 16:37:02 ) Full size: 640x480
Bird on diffuse PAR boom
391 20101007TZ_TiltedTramPAR.jpg (2010-10-07 12:13:24 ) Full size: 3648x2736
PAR sensors twisted on the radiometer tram
417 TZ_051.jpg (2010-10-07 19:34:27 ) Full size: 1944x2592
Temporary Floor net radiation and PAR sensors
678 SI_webcam_20110401445.jpg (2011-02-09 14:45:02 ) Full size: 640x480
Bird on diffuse PAR boom
1040 20110513SI_Field.jpg (2011-05-13 09:44:47 ) Full size: 2560x1920
Diffuse PAR sensor, green pepper weed and grass
1280 20110621SI_DiffusePAR1.jpg (2011-06-21 10:20:26 ) Full size: 2560x1920
Rotating shadow band for diffuse PAR
1281 20110621SI_DiffusePAR2.jpg (2011-06-21 10:22:13 ) Full size: 2560x1920
Rotating shadow band for diffuse PAR
1282 20110621SI_DiffusePAR3.jpg (2011-06-21 10:23:29 ) Full size: 2560x1920
Rotating shadow band for diffuse PAR
1284 20110621SI_DiffusePARMotor.jpg (2011-06-21 10:38:49 ) Full size: 2560x1920
Diffuse PAR AC motor
2625 SI_autocam_20120501_1015.jpg (2012-05-01 10:15:03 ) Full size: 1920x1440
Bird on diffuse PAR shadow band
2644 SI_webcam_20121221015.jpg (2012-05-01 10:15:04 ) Full size: 640x480
Bird on diffuse PAR shadow band
2645 SI_webcam_20121240545.jpg (2012-05-03 05:45:04 ) Full size: 640x480
Bird on diffuse PAR shadow band
2629 SI_autocam_20120515_1015.jpg (2012-05-15 10:15:03 ) Full size: 1920x1440
Bird on diffuse PAR shadow band
2634 SI_autocam_20120604_0515.jpg (2012-06-04 05:15:07 ) Full size: 1920x1440
Bird on diffuse PAR shadow band
3025 TW_autocam_20121002_0745.jpg (2012-10-02 07:45:02 ) Full size: 1920x1440
Bird on PAR sensor
3537 TW_autocam_20130706_1645.jpg (2013-07-06 16:45:02 ) Full size: 1920x1440
Bird of prey on PAR
3688 20131018VR_LevelPAR.jpg (2013-10-18 09:49:07 ) Full size: 1920x1440
PAR sensor level
3684 20131018VR_LevelBF3.jpg (2013-10-18 09:53:32 ) Full size: 1920x1440
BF3 diffuse PAR sensor after leveling
3685 20131018TZ_LevelBF5.jpg (2013-10-18 12:10:18 ) Full size: 1592x1228
BF5 diffuse PAR sensor after leveling
3690 20131018TZ_LevelPAR.jpg (2013-10-18 12:11:00 ) Full size: 964x832
PAR sensor was level
4220 20150415TZ_DiffusePAR1.jpg (2015-04-15 12:50:59 ) Full size: 1920x1440
Rotating shadow band for diffuse PAR and radiometers at Tonzi
4221 20150415TZ_DiffusePAR2.jpg (2015-04-15 12:52:05 ) Full size: 1920x1440
Rotating shadow band for diffuse PAR
4288 20151015TA_DiffusePAR.jpg (2015-10-15 13:34:16 ) Full size: 1920x1440
Newly installed diffuse PAR sensor with homemade rotating shadow band
5211 20200417BA_UndercanopyPAR.jpg (2020-04-17 16:20:00 ) Full size: 1920x1440
A PAR sensor was installed under the alfalfa canopy to try to measure undercanopy PAR. The sensor is resting on a piece of foam and is protected on the sides by a PVC pipe.
5210 20200417BA_UndercanopyPARInstall.jpg (2020-04-17 16:26:40 ) Full size: 1920x1440
A PAR sensor was installed under the alfalfa canopy to try to measure undercanopy PAR. It is about 2.4m from the SW corner of the BA tower.
5262 20200501BA_zPARShade.jpg (2020-05-01 16:08:46 ) Full size: 1440x1920
Pile of mowed alfalfa was shading the undercanopy PAR sensor
5307 20200821BA_zPAR.jpg (2020-08-21 14:23:22 ) Full size: 1440x1920
Undercanopy PAR sensor is an an unusually open part of the canopy. Maybe all my digging around in the multiple installations has affected alfalfa growth.
5468 20210121TZ_PARCompare.jpg (2021-01-21 00:00:00 ) Full size: 1440x1920
Comparing PAR sensors
5519 20210330EE_ParUnder2.jpg (2021-03-30 17:10:11 ) Full size: 1440x1920
Undercanopy PAR sensor #2 in an open water location a few cm above the water
5520 20210330EE_ParUnder3.jpg (2021-03-30 17:10:41 ) Full size: 1440x1920
Undercanopy PAR sensor #3 in a heterogeneous litter layer. This sensor is about 30cm above the water level
5518 20210330EE_ParUnder1.jpg (2021-03-30 17:14:58 ) Full size: 1440x1920
Undercanopy PAR sensor #1 above a patch of blown-down reeds
5522 20210415EE_UndercanopyPAR.jpg (2021-04-15 15:51:06 ) Full size: 1920x1440
Location of undercanopy PAR sensors on south side of the tower. This is the view when looking down from the upper boardwalk. Undercanopy PAR #2 sensor is currently underwater.
5545 20210609HS_RadCalKit.jpg (2021-06-09 18:45:36 ) Full size: 1440x1920
Radiometer calibration kit installed on Hill Slough rad boom (4-way radiometer, Apogee NDVI pair, PAR). Note high winds blowing the loose cables sideways.
5562 20210721EE_RadIntercomparison.jpg (2021-07-21 12:54:22 ) Full size: 1920x1441
Reference radiometers (4-way, PAR, NDVI pair) set up on EE rad boom for an intercomparison
6311 20230616TZ_RotatingShadowBand.jpg (2023-06-16 11:36:54 ) Full size: 1920x939
Rotating shadow band set up on the top of Tonzi tower for an intercomparison with the Delta-T BF5 diffuse PAR sensor
6699 20240314BC_LeftOverCrayfishParts.jpg (2024-03-14 10:45:46 ) Full size: 1440x1920
Some bird left parts of at least two crayfish in the tipping bucket
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