Weather: sunny with breeze

 

• Fill ch4 water reservoir

A little left 5%

• Clean sensors

done

• Download met data

done

• Download flux data

done

• Download phenocam

done

• Check the diagnostic table: is it stillknown (unable to contact status server)?

No, everything is ok

• Check clocks

Datalogger is ahead, synch with pc now.

We found thermal couple TC_1_32 has higher value (35 degree) than the other two (27 degree).

We found Licor7700 has several problems, the desiccant need to be replaced. and the thermal couple inside was broken (showed 9999), this is why it showed unreasonable value (67ppm). We found everything else for Licor7700 look fine. Next time we need to fix these two. But this will not affect the data because we also have CH4 density data in m3, just when to process the data, use other temperature to convert it to ratio.

 

Vegetation height:

Readings:

	Before cleaning sensors	After cleaning sensors
LI-7500 readings
CO2 ppm	397	409.86
H20 ppm	519.7	619.2
T ºC	21.07	20.43
P kPa	101.37	101.36
SS %	85.35	98.034
LI-7700 readings
CH4 ppm	65.36	67.1067
RSSI %	9.97	81.15