NGEE Teller Top Notes
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Contents
Latest
- Met Data QA'd through last visit (9/2018)
- Radiation Data QA'd through last visit (9/2018)
- Partway through processing soil.
Met 2017
- HMP155 August 2017
- failure looks legit... not a data gap.
- HMP155 Cuts out on 10/25 8:00
- replaced AT portion with new AT thermistor.
- DP & RH left NAN
- HMP155 replaced on March 2018 visit
- Rain corrected through most recent download.
- Wind Speed / Direction
- Propeller replaced 6/28/2017
- No Rime fall 2017
Met 2018
- Wind
- all rime conditions corrected for through 3/2018 in QC spreadsheet.
- Rain NAN through snowmelt
- Radiometer leveled and desiccant replaced 6/12/2018
- Radiometer leveled again 9/24/2018
- Tipping bucket leveled 6/12/2018 & 9/24/2018
- AT/RH corrected through 3/30/2018 20:00 after sensor destroyed over winter season.
Radiation 2017
- There is a gap 10/2/2017 0:00 to 10/2/2017 22:00
- I think this is when we removed the sensor from the field to change the desiccant.
- as in, the screws were stripped and so we drilled and retapped back in town.
- I think this is when we removed the sensor from the field to change the desiccant.
Radiation 2018
- All good through March visit.
- There is a weird thing in 2018 where the lower SW has values higher than the upper SW. I assume this is due to snow/ frost up top. Perhaps related to how close the snow surface is to the sensor this year resulting in a lower wind speed later in the winter.
Soil 2017
- 2017 heat flux plates prior to fall were being measured on wrong channel.
- 2017-03-12 02:00:00 Upper heat flux plate has a value that isn't ever flipped by the qc program.
- 2017-03-12 02:00:00 Lower heat flux plate has a value that isn't ever flipped by the qc program.
- Easy Perl one liners to accomplish this:
perl -pi -e 's/"2017-03-12 02:00:00",149.2/"2017-03-12 02:00:00",6999.00/g;' $TT_SOIL_DIR/outputs/SoilPit_HeatFlux_Lower.csv perl -pi -e 's/"2017-03-12 02:00:00",140.8/"2017-03-12 02:00:00",6999.00/g;' $TT_SOIL_DIR/outputs/SoilPit_HeatFlux_Upper.csv
- 2017 Soil pit soil moisture -- all corrected
- 2017 Soil heat flux plates also all corrected
- with Vlad determined only good VATP are 2/5/25/50/60/100
- Soil Temperature: VATP
- I think I have everything corrected though I don't entirely believe the 100cm probe.
- 8/16/2017 from Lily's field book page 50:
- VATP was heaved 9.5cm above standing water table. I pushed it back down
Soil 2018
- 2018 soil pit soil moisture -- all corrected through most recent visit (3/2018)
Snow 2018
- Snow temperature profile
- Weird shift (looks like mux wonky 1/22 to 1/28/2018)
Site Downloads / visits:
- Lily / Bob 6/28/2017
- Lily 8/16/2017
- Lily 8/20/2017
- Bob 6/12/2018
Instrumentation and Heights
- AT/RH @ 2.2m
- Vaisala HMP155
- https://www.campbellsci.com/hmp155a
- -80 to +60 Celsius
- ±(0.226 - 0.0028 x temperature)°C (-80° to +20°C)
- 0 to 100 % Relative Humidity
- ±(1.2 + 0.012 × reading) % RH (at -40° to -20°C); ±(1.0 + 0.008 × reading) % RH (at -20° to +40°C)
- WS/WD @ 4.12m
- RM Young 01503
- https://www.campbellsci.com/05103-l
- Range: 0 to 100 m/s
- Accuracy: +-0.3m/s
- Startup threshold: 1.0 m/s
- Wind Direction measurement band: 0 to 355 degrees
- Accuracy: +-3 degrees
- Snow Depth @ Tripod
- Campbell Scientific SR50A
- https://www.campbellsci.com/sr50a
- Resolution: 0.25mm
- Accuracy: +-1.0 cm
- Snow Depth @ Lump
- Campbell Scientific SR50A
- https://www.campbellsci.com/sr50a
- Resolution: 0.25mm
- Accuracy: +-1.0 cm
- Net Radiation @ 1.5m
- Kipp & Zonen CNR4
- https://www.campbellsci.com/cnr4
- Shortwave Measurement Range- 305 to 2800 nm
- Shortwave Uncertainty in total daily - < 5% (The uncertainty values are for a 95% confidence level.)
- Longwave Measurement Range - 4500 to 42,000 nm
- Longwave Uncertainty in total daily- < 10% (The uncertainty values are for a 95% confidence level.)
- Skin Temperature @ 1.9m:
- Apogee Instruments SI-111
- https://www.campbellsci.com/si-111
- Operating Range: -55 to +80 C
- Accuracy: ±0.2°C (-10° to +65°C) & ±0.5°C (-40° to +70°C)
- Field of View: 22° half angle
- Summer Precipitation
- Soil Moisture
- Snow Temperature
- Soil Temperature
- Soil thermal conductivity