Field notes

Alfacada: 2026-09-15, 10:00 UTC (DOY 280)

Date & Time

07/10/26

Author

Iosif

Other participants

Qin

Field report

The weather was sunny with a slight breeze. Could see waves at the beach.

The water reservoir for the methane sensor’s self cleaning mechanism had 10% water left and it was refilled.

All data was downloaded by Iosif without problems of connectivity and whatnot.

Qin performed the sensor cleaning routine.

The datalogger was found to be 6 seconds ahead of UTC and the PC. No synchronization action was taken.

Readings:

Before cleaning sensors After cleaning sensors
LI-7500 readings
CO2 ppm 423.6 424.3
H20 ppm 18.9 19.14
T ºC 26.11 25.77
P kPa 101.4 101.44
SS % 94.5 97.65
LI-7700 readings
CH4 ppm 2.25 2.26
RSSI % 9.6 81.4