Field Notes

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Other sites visited today: Tonzi

Vaira: 2023-05-16 10:50:00 (DOY 136)
Author: Joe Verfaillie
Others:

Summary: Hot. Standard data collection, updated met program for Bowen ratio stats

Vaira
2023-05-16

I arrived at about 10:50 PDT. It was clear sunny and hot. The ground surface is dry but the water hole is still nearly full. Flowers are blooming everywhere and the grass is about knee to mid-thigh high and going to seed. The trees have full, dark green leaves.

I measured the well and then collected the met, flux, FD and camera data. All seemed well. I cleaned spider webs off the 7500
The 7500 read: 437.3ppm CO2, 607.8mmol/m3 H2O, 29.3C, 99.6kPa, 101.0SS

I updated the CR1000 met program. I added another table, “revbow” to add the statistics that Carlos’s method for calculating LE as a residual needs. This code does the calculation with and without the pressure from the Vaisala that can be funky at times.

I took spectra and veg heights.

A lot of the grasses are at the height of the electric fence wire and there is plenty for the cows to eat outside the fence, so I left the fence charger off.

I left at about 12:00 noon PDT

Field Data

No tank data

Well Depth