Field Notes

<--2017-09-07 12:00:00 | 2017-09-28 10:30:00-->
Other sites visited today: Vaira

Tonzi: 2017-09-14 09:30:00 (DOY 257)
Author: Joe Verfaillie
Others: Daphne

Summary: Reinstalled the Vaisala soil co2 probes, cleaned up wiring on tower top met sensors.

Tonzi
2017-09-14

Daphne and I arrived about 9:30am. It was cool with a heavy overcast and misty. Later in the day the clouds broke up and it became mostly sunny but still mild.

Daphne worked on cleaning up the wiring on the tower top.

I reinstalled the Vaisala CO2 sensors. I made new frames that are staked to the ground with rebar and hold four PVC tubes at -2, -4, -8, and -16 cm deep. I used a drill to dig the holes. The tubes are pressed tightly to the bottom of the holes but I had to back fill some along the sides of the holes. There are now four probes at each location instead of three so I had to add a transmitter to each box. At Tree 1 there were originally four probes, but one of the original wires is now used for power control. We rewired the CO2 probes here to be single ended so that probe three and four share a signal ground wire. There should be a fourth TC wire there somewhere but I didnâ€™t think to look for it. At the Open box I removed the system voltage to add in the fourth TC. At Tree 2 ??. I seem to remember that the SDI sensor function used to get the data from the CR10x can only send nine locations so I sent the four CO2 values, four TC readings and the panel temperature leaving out the battery voltage.

sn Y0850004 - Tree 2 profile at -16cm
sn F4960020 - Tree 2 profile at -8cm
sn K1350103 - Tree 2 profile at -4cm
sn Z2720014 - Tree 2 profile at -2cm
sn Y2009100 - Tree 1 profile at -16cm
sn G0150036 - Tree 1 profile at -8cm, Using old tube
sn G0150035 - Tree 1 profile at -4cm
sn L2010069 - Tree 1 profile at -2cm
sn G0150037 - Open profile at -16cm
sn K1340006 - Open profile at -8cm
sn Z2720015 - Open profile at -4cm
sn K1310104 - Open profile at -2cm

Field Data

No tank data

No TZ Well data found

No TZ Moisture Point data found

No VR Moisture Point data found

No TZ grass heigth found

No VR grass heigth found

No TZ Tree DBH found

No water potential data found

No TZ Grass Biomass data found

No TZ OakLeaves Biomass data found

No TZ PineNeedles Biomass data found