Difference between revisions of "NGEE Teller Top Notes"

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** Vaisala HMP155
 
** Vaisala HMP155
 
** https://www.campbellsci.com/hmp155a
 
** https://www.campbellsci.com/hmp155a
−
** -80 to +60 Celsius
+
** Temperature Range: -80 to +60 Celsius
−
** ±(0.226 - 0.0028 x temperature)°C (-80° to +20°C)
+
** Temperature Accuracy: (0.226 - 0.0028 x temperature)°C (-80° to +20°C)
−
** 0 to 100 % Relative Humidity
+
** Humidity Range: 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)
+
** Humidity Accuracy: ±(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
 
* WS/WD @ 4.12m
 
** RM Young 01503
 
** RM Young 01503
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** Field of View:  22° half angle
 
** Field of View:  22° half angle
 
* Summer Precipitation
 
* Summer Precipitation
 +
** Texas Instruments TE525MM Metric model
 +
** https://www.campbellsci.com/te525mm-l
 +
** Accuracy:  1.0% up to 50 mm/hr
 
* Soil Moisture
 
* Soil Moisture
 +
** Stevens Hydrasense II
 +
** https://amarillo.nserl.purdue.edu/ceap/metadata/Stevens_Hydra_soil.pdf
 +
** Range Dielectric Constant: 1 = Air to 78 = Distilled Water
 +
** Accuracy Dielectric Constant: ±1.5% or 0.2 whichever is greater
 +
** Soil Moisture Range: Completely Dry to completely saturated
 +
** Soil Moisture Accuracy: ±0.03 water fraction by volume in typical soil
 +
** Conductivity Range: 0.01 to 1.5 Siemens per meter
 +
** Conductivity Accuracy: ±2.0% or 0.005 S/m whichever is greater
 +
** Temperature Range: -10 to +65 Degrees Celsius
 +
** Temperature Accuracy: ±0.1 Degrees Celsius
 +
* Soil Heat Flux
 +
** https://www.campbellsci.com/hfp01
 +
** Sensitivity:  50 μV W-1 m-2 (nominal)
 +
** Accuracy:  Within -15% to +5% in most common soils (12 hour totals)
 
* Snow Temperature
 
* Snow Temperature
 +
** Thermistor - US Sensor PS302J2
 +
** https://www.littelfuse.com/~/media/electronics/datasheets/leaded_thermistors/littelfuse_leaded_thermistors_interchangeable_thermistors_standard_precision_ps_datasheet.pdf.pdf
 +
** Range: -80 to +75 Degrees Celsius
 +
** Accuracy: ±0.1 Degrees Celsius
 +
* Backup Air Temperature
 +
** Thermistor - US Sensor PS302J2
 +
** https://www.littelfuse.com/~/media/electronics/datasheets/leaded_thermistors/littelfuse_leaded_thermistors_interchangeable_thermistors_standard_precision_ps_datasheet.pdf.pdf
 +
** Range: -80 to +75 Degrees Celsius
 +
** Accuracy: ±0.1 Degrees Celsius
 
* Soil Temperature
 
* Soil Temperature
 +
** Thermistor -  US Sensor PS103J2
 +
** https://www.littelfuse.com/~/media/electronics/datasheets/leaded_thermistors/littelfuse_leaded_thermistors_interchangeable_thermistors_standard_precision_ps_datasheet.pdf.pdf
 +
** Range: -80 to +75 Degrees Celsius
 +
** Accuracy: ±0.1 Degrees Celsius
 
* Soil thermal conductivity
 
* Soil thermal conductivity
 +
** East30 Sensors Thermal Conductivity
 +
** Thermal Conductivity Accuracy: ±5% (Except at soil temperature range about -1.5 to 0.0 Degrees Celsius)
 +
** https://www.east30sensors.com/thermalconductivity
 +
** Temperature Accuracy: ±0.1 Degrees Celsius

Revision as of 12:53, 30 April 2021

NGEE

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.

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

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