12:45 - Tsfc.8m went down at ~11:00am. I may have disturbed the cabling when I came down the tower.
We will check after lunch.
UPDATE: sensor back up around ~3:00pm.
At tower mostly to take LAI profie since mostly overcast.
0958 - Oncley cleaned 2m kh2o
1010 - Semmer starts ascent
1015 - Oncley soilb sample
1020 - Semmer first LAI reading at 40m
1025 - Oncley soila sample
1029 - Oncley unplug rain gauge drain (tube was mostly open, so data should have been okay)
1040 - Semmer clean 14m krypton
1048 - Semmer down
Weather: Overcast, potential rain throughout the day
Summary: Everybody up and running. Rain event last night at 1:00 AM.
Sonics: ok, some IDAIG during the rain
TRH, P: ok
Wind Speed & Dir: ok
Soil, Rainr: ok, rain activity at 1:00 am, tsoila.4.4cm down
Vmote (rad, a, a2, b): 12.8, 12.7, 12.9, 12.2
Radiation, Wetness: ok
H2O, CO2: ok, wet kryptons drying out
System (GPS, Vdsm): ok
Pond: ok
Weather: Clear skies in Tuscaloosa
Summary:
Sonics: ok
TRH, P: ok
Wind Speed & Dir: ok
Soil, Rainr: ok, OTT event at 4:00 am, Tsoila.4.4cm down, early morning outages on Qsoil.b
Vmote (rad, a, a2, b): 12.8, 12.9, 12.8, 12.4
Radiation, Wetness: ok
H2O, CO2: 38m CE150 is acting up, started at ~1:30 am this morning
System (GPS, Vdsm): ok
Pond: ok
15:45 - Steve O. added a tsoil probe in the duff at soila2. This probe is one of our single temperature probes even though the
output message is similar to a 4 channel probe.
Oncley adds: The duff wasn't too thick here -- perhaps 1.5cm of needles and a few leaves. It isn't too dense, so the probe is mostly measuring air temp (interstitial in the duff). At the moment, it is reading about about 0.5 C higher than 0.6cm, which is at least the right direction.
In looking at TP01 data for the project, I see that Vheat is rock solid for soil.b, but varies by 6mV for soil.a This isn't huge, and is measured, so it shouldn't be a problem in the data. However, it is acting as though there is variable resistance on the heater cable for soil.a. We should test this probe in post-cals and/or check the Binder connector.
The Tau63 values also have events. soil.a sometimes changes from ~6.5s to ~10.5s (loosely associated with rain events). soil.b has a couple of spikes from ~8 to ~4.5 (no relation to rain). These are more than isolated events (especially for a).
?P.S. at about 1540 on 1 Jul, I did unplug and plug in the soil.a TP01 Binder. There wasn't anything obvious wrong. I'll try to remember to monitor it over the next few days to see if Vheat settles down.
Weather: A few clouds this morning
Summary: everything looks good. A rain event from 7:00pm to 11:00pm last night,. There was also a morning event
around 7:30am.
Sonics: ok
TRH, P: ok
Wind Speed & Dir: ok
Soil, Rainr: soila2 down ~9:00pm to ~0:00 pm (includes rad.wetness), tsoila.4.4cm bad
Vmote (rad, a, a2, b): 12.9, 12.8, 12.9, 12.5
Radiation, Wetness: ok
H2O, CO2: ok
System (GPS, Vdsm): ok
Pond: ok
Have started looking at the comparison between the various rain gauges. In this analysis, I removed [data when the wetness sensor indicated dry conditions?] There have been several major rain events, but not all sensors were working:
Date |
understory |
ott.pond |
tb.pond |
wxt.pond |
wetness.pond |
|---|---|---|---|---|---|
6/1 |
ok |
ok |
wire stretched |
misconfigured |
ok |
6/5-6/6 |
plugged |
ok |
wire streched |
misconfigured |
ok |
6/7 |
plugged |
ok |
wire stretched |
ok |
ok |
6/17-6/18 |
plugged |
ok |
ok |
ok |
died |
6/28 |
branch hit |
ok |
ok |
ok |
ok |
6/29 |
ok |
ok |
ok |
ok |
ok |
As far as I know, there were no sensor issues for the remainder of the experiment.
Daily storm totals (to nearest mm):
Date |
understory |
ott.pond |
tb.pond |
wxt.pond |
|---|---|---|---|---|
6/1 |
32 |
41 |
40 |
|
6/2 |
3 |
1 |
1 |
|
6/6 |
3 (plugged) |
18 |
|
|
6/7 |
1 (plugged) |
50 |
|
13 (misconfig) |
6/9 |
0 |
2 |
2 |
3 |
6/14 |
3 |
3 |
3 |
4 |
6/17 |
|
12 |
12 |
16 |
6/18 |
3 (plugged) |
10 |
11 |
13 |
6/24 |
1 |
1 |
1 |
2 |
6/28 |
0 |
0 |
0 |
1 |
6/29 |
1 (hit) |
18 |
19 |
21 |
7/3 |
9 |
7 |
7 |
9 |
7/4 |
1 |
3 |
3 |
2 |
7/5 |
4 |
12 |
15 |
11 |
7/6 |
6 |
14 |
17 |
14 |
7/7 |
0 |
3 |
3 |
3 |
7/9 |
0 |
1 |
1 |
1 |
7/10 |
1 |
1 |
1 |
3 |
7/11 |
49 |
44 |
52 |
58 |
7/13 |
0 |
1 |
1 |
1 |
7/14 |
3 |
2 |
2 |
2 |
7/15 |
4 |
3 |
4 |
3 |
Total |
139 |
259 |
207 |
191 |
Total (all sensors working) |
92 |
106 |
118 |
126 |
SUMMARY:
- Ott and siphoning tipping bucket agree very well (when totaled multiple days, agree to within 4%).
- WXT is high by about 30% (when totaled mulitple days)
- We don't have much good data from the understory gauge.
Weather: fog burning off this morning. The usual with possible showers in the afternoon
Summary: everything looks good. There was an event on the 38m and 43.9m CO2 this morning at ~7:30am.
Sonics: ok
TRH, P: ok
Wind Speed & Dir: ok
Soil, Rainr: ok
Vmote (rad, a, a2, b): 12.9, 12.8, 13.0, 12.7
Radiation, Wetness: ok
H2O, CO2: ok, spike in CO2 at 38m and 43.9m this morning, ~7:30am.
System (GPS, Vdsm): ok
Pond: ok
Sometime yesterday afternoon -- probably when I was adding Ott variables to the config -- nc_server died and we never noticed. I just manually restarted it this morning and am rerunning covars from yesterday.
Gordon and I just had this exchange, that I thought should be put in the logbook (even though it relates to an action a while ago):
I'm starting to look at the rain gauge comparison. I note a major event on 7 June that was only seen by the OTT. This caused you to change the WXT settings. For the next 2 days, Tom's daily status messages noted that rain.tb was not reporting, but this comment was dropped on 9 June. I haven't found a comment about what fix was done to get rain.tb working – did Chris just touch it?
...Steve
Yea, Chris G fixed the tb about the 2nd or 3rd day he returned. The cable had become stressed and he had to open up the shrink tube and give it some "Stumpy love".
Gordon
The chemistry people reported that AC power went out overnight on their instruments, though it was going again this morning. They lost the night's worth of data. As far as we can tell, base trailer power stayed up (cockpit was still running). (The tower stayed up, but it has a battery.) Combined with the damage to soilb, I was concerned that a branch may have hit the AC power cable running through the woods, so I did a reasonably careful inspection walking the entire line. I did see a 2" branch laying across the line (see photo) that I removed, but saw no evidence that it had damaged the cable. Both sides of the affected span were cable-tied to saplings, that could have bent to absorb the shock and the cable ties themselves were secure. There were a couple of other 1/8" sticks that also appeared not to have affected the cable.
Perhaps the outage was due to a surge?
10:50 - Soila and Soilb are back on the air. Soilb was struck by a falling tree branch
last night sending the battery 5.5m from the mote. Late in the night soila went down.
Based on the results of the repair work it appears soila is routing its data through soilb. We may try
moving the base mote again.
Sorry the image is a bit blurry, but this should give the idea that the branch broke the mount on the right side of the solar panel, hit the battery box, and is now laying on top of the soil sensors. We won't move the branch, as this is a natural event. The battery ended up another 2m to the right of this image. The mote antenna was cocked down a bit and some of the DIN cables also had been slightly pulled. The only action taken was to replace the battery box+battery and collect the scattered pieces. 