Field Notes

<--2019-10-31 15:51:00 | 2019-12-02 14:55:00-->
Other sites visited today: Bouldin Corn | East Pond | East End | West Pond
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Bouldin Alfalfa: 2019-11-14 11:50:00 (DOY 318)
Author: Daphne Szutu
Others: Alex

Summary: Regular data collection/cleaning, spectral, veg height

2019-11-14
Bouldin Alfalfa

Alex and I arrived at 11:50. It was a mild day with cirrocummulus clouds and hazy horizons. The alfalfa was short and sparse. Alex and I saw two seals(?) in the slough east on the island as we were driving to and from the alfalfa fields.

Alex took spectral and veg height measurements. I downloaded met, camera, USB GHG, and FD data. I also swapped the LI-7500 for calibration: sn 75H-2150 came down and sn 75H-2176 went up. I uploaded a new config file, updated the pressure coefficients, and reset the box. Afterwards, I confirmed the USB was logging, the GHG columns looked good, and there was no time error. Alex cleaned flux and rad sensors. The wash reservoir was 4/5 full; I refilled it.

LI-7500 readings (sn75H-2150 --> sn75H-2150 clean --> sn75H-2176):
CO2 438ppm --> 444 --> 413
H2O 634ppm --> 612 --> 560
T 21.2C --> 19.9 --> 20.5
P 101.8kPa --> 101.7 --> 101.7
SS 94 --> 101 --> 100
LI7700 readings:
CH4 1.87ppm
RSSI 23--> 75 after cleaning

We left at 12:25.

Next Mowing: 2020-01-18

Veg Height (cm): Tape measure from ground to top of plant
26, 18, 16, 6, 27, 17, 21, 23, 21, 23, 25, 23, 13, 18, 26, 9, 16, 15, 17, 8, avg = 18.4, stdev = 6.14

0 photos found

7 sets found

5 BA_flux graphs found