Field Notes

<--2020-07-27 00:00:00 | 2020-08-05 14:00:00-->
Other sites visited today: Mayberry | Sherman Wetland
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Bouldin Corn: 2020-07-30 14:55:00 (DOY 212)
Author: Daphne Szutu
Others:

Summary: Regular data collection/cleaning, clip plots, LAI, veg height, removed zcams, installed replacement AirT/RH sensor, water in spud ditches

2020-07-30
Bouldin Corn

I arrived at 14:55 PDT. It was a warm and windy day with clear skies. There was some water at the bottom of the spud ditches. The bottom few leaves of the corn plants were senescent.

The wash reservoir was mostly full; I topped it off. I downloaded met, camera, and USB GHG data. There was a problem ejecting the USB (slow blinking LED), but the data seemed complete and everything seemed ok after restarting the 7550.

I downloaded the 3 FD chambers and cleared them.

I downloaded photos from the 2 fisheye zcams (sn RPI0W-001 and sn RPI0W-002) and shut them down. I connected to the sn RPI0W-004 network but could not open its webpage. I unplugged it and removed all 3 zcams to bring back to the lab since gap fraction is at a minimum and flattening out. I wasnâ€™t able to remove the long thin bolts they were attached to, so I need to remove them next time.

I installed HMP 60 sn L1740398, but the cable is still labeled L1740395. The new AirT was 29 degC and RH was 31%.
I cleaned flux and rad sensors and changed the water level desiccant.

I took 5 biomass samples, measured veg height, and took 2-wand LAI measurements facing ~NE.

LI-7500 readings:
CO2 400ppm
H2O 650ppm
T 29.7C
P 100.8kPa
SS 103-->103 after cleaning
LI7700 readings:
CH4 1.89ppm
RSSI 63-->87 after cleaning

I left at 16:45 PDT.

Veg Height (cm): Tape measure from ground to top of plant - Measured to top of tassel
265, 259, 246, 250, 246, 250, 249, 251, 220, 221, 217, 240, 223, avg = 241.3, stdev = 15.86

0 photos found

6 sets found

17 BC_met graphs found