Field Notes

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Sherman Wetland: 2016-06-01 08:30:00 (DOY 153)
Author: Joe Verfaillie
Others:

Summary: Finishing up site installation, change data logger clock and 7700 time zone.

Sherman Wetland
2016-06-01

I arrived about 8:30am. It was clear, sunny and hot with a breeze increasing to a strong wind from the west. There were workers in hardhats and vests at the gate and moving about on the roads. Maybe Bruce didnâ€™t get the maintenance contract for the site.

I added a U-bolt to the solar charge controller box and hung it on the scaffolding post. There was just enough room for the door to swing open through the cross brace. But, the bottom mount was right on a cross bar so I could not put a U-bolt in the bottom. I settled for a cable tie. I also added a U-bolt to the battery box in the back near the top.

I tightened all the security bolts on the solar panels. There had been a small misalignment in the panel mounts but it seems to have worked itself out and everything looked pretty straight. I also tightened all the bolts in the scaffolding pins. I added a fence post in the center and tied it to the boardwalk with guy wire. It might be good to put a turn buckle on this.

At the main tower I added spacers to the HMP60 U-bolt and tightened it. And I swapped out the bolt holding the 7700 for a setscrew.

I brought the radiation boom in and added an adapter for the NR01 mount. The NR01 mount still has the extra-long screws that should be swapped out for the original screws. I then rearranged the radiation sensors to fit better and use as much or their cable lengths as possible. The positions of all the sensors moved out a bit. I leveled all the sensors but double checking this again later as things settle is a good idea. I added split loom to all the radiation senor wires to protect them from solar degradation. The bolt that locks the boom needs some WD40.

I put up the post for the camera but then discovered I forgot the power jack for the camera. The hose clamps on the post could be tightened some more.

I brought out a third boardwalk and put it near the data logger box. I added a NL115 CFM card holder sn 13054 to the CR1000. To do this I had to move the CR1000 one set of holes to the left to make space for the card module. I could add some 1/4-20 bolts to the 2x4 to better mount the data logger box. It also need another 12VDC plug - one is missing.

I added split loom to the 7700 wash tubing and topped off the reservoir.

We need to add bird spikes to the eddy sensors. We can do the sonic in the field. Maybe we should try Velcro for the 7500 and 7700.

I moved the tipping bucket to a fence post to the northwest for the time being.

I added bolts to all the scaffolding pins and tightened them. I added guy wires with turn buckles to the fence posts at the corners.

I collected the met and flux data.
The 7500 read: 403.2ppm CO2, 689.7mmol/m H2O, 27.12C, 101.09kPa, 100.23SS
The 7700 read: 1.925ppm CH4, 55RSSI - lots of spider webs cleared.

The data logger clock was behind by 26 days, 23 hours and 30 minutes. I reset its clock at 12:21. This was due to a low internal lithium battery. The data logger should be okay if it doesnâ€™t lose power, but hopefully I will have a new battery next week. I also updated the program to record the air pressure in IEEE instead of FP2. And I set its IP address to 192.168.2.1 for when the camera is added.

The 7700 time zone was UTC. I changed it to etc/GMT+8 at 12:34PST. I donâ€™t think this affected the data collected by the 7550, but the 7700 heater was coming on at the wrong times.

0 photos found

7 sets found

Can't check MBWPEESWGT_mixed
Can't check MBEEWPSWEPGT_cam
15 SW_met graphs found