Toolik UAF WWW

Weather Metadata

Instrumentation histories are accurate to the best of our knowledge, but not necessarily complete.

Air Temperature & Relative Humidity

Current:

  • Vaisala HMP155A measures air temperature and relative humidity (https://www.campbellsci.com/hmp155a). With a 41005-5 14 plate radiation shield (https://www.campbellsci.com/h41005-5)

Height: 3 and 5 m

06/08/16: swapped with calibrated sensors

08/28/14.Installed: 3m and 5m

Past:

  • Vaisala HMP45C measured air temperature and relative humidity (https://www.campbellsci.com/hmp45c-l).

Height: 5m

08/28/15 swapped with calibrates sensor

05/2013: swapped with calibrated sensor

08/08/11: swapped with calibrated sensor

08/28/09: swapped with calibrated sensor

08/19/08: Installed

  • R.M. Young 41382VC measured air temperature and relative humidity (http://www.youngusa.com/products/2/15.html)

Height 3m

04/18/12: Swapped with calibrated sensor  (measures in Celsius)

08/08/11: Swapped 3m with calibrated sensor (measures in Fahrenheit- converted to C in logger program)

08/19/08: Installed

  • CS500 measured air temperature and relative humidity (https://www.campbellsci.com/cs500-l)

Height 5m

08/19/08: removed

  • 1m Temp/RH removed 08/19/08

Precipitation

Current:

  • OTT Pluvio 2 measures "year round precipitation" (http://www.ott.com/en-us/products/meteorological-sensors/ott-pluvio2-l-weighing-rain-gauge/). Surrounded by a double fence Wyoming wind shield.

performed guided accuracy test: 8/23/16

not working: to 6/8/16-8/23/16. Our summer tipping bucket was able to cover that outage, however two snow events occurred during the outage of the year-round gauge, the timing and volume of these events were likely not measured accurately by the tipping bucket.

Installed: 08/18/10

  • TE525WS measures "rainfall- tipping bucket" (https://www.campbellsci.com/te525ws-l). Surrounded by a single alter shield 

2016: Snow events occurred on June 5th, 8th, and 21st. The exact timing and volume of these events were not measured accurately.

Calibrated: 06/09/16

Past:

  • OTT Pluvio 250 mm with ring heater removed: 08/18/10

Wind

Current:

  • R.M. Young 5106 measures wind speed and direction. (http://www.youngusa.com/products/7/8.html)

Note: During winter the sensors are affected by rime ice that prohibits the propellers from spinning at low wind speeds.  Rime can only build up when there is very little wind, so it is difficult to know if they are reporting low or zero wind speeds due to ice or actual conditions.  However, a best attempt was made to replace steady zero values with NAN.

Height: 5 m

2016 data comes from the R.M. Young 5103 because it provides a more complete data-set. Readings from the instruments are nearly identical. 

06/08/16: swapped new 5108-45 for the 5106. crossarm was out of level, now level and more secure

Installed: 06/02/15 new.  (an R.M. Young 5103 was installed at the same time also at 5 m. Its data is available upon request but for 2015 is not output through this website)

Past:

  • Met One 024A measures wind direction and Met One 014A measures wind speed (http://www.metone.com/meteorology.php)

Height: 5m

06/02/2015: both removed

08/28/14: WS and direction sensors swapped with calibrated sensors

08/28/13: WS and direction swapped with calibrated sensors

07/23/13: moved WS and direction sensors to new tower

05/2013: WS and direction sensor swapped with calibrated sensors

08/08/11: WS and direction sensors swapped with calibrated sensors

08/19/08: WS and direction sensors swapped with calibrated sensors

  • 1m WS removed 08/19/08

Soil Temperature

AM25T Thermocouple multiplexer (https://www.campbellsci.com/am25t) with 18 connected omega engeinnering thermocouples


Evaporation Pan

Current:

  • Novalynx 255-100 measures evaporation pan depth (http://novalynx.com/store/pc/255-100-Analog-Output-Evaporation-Gauge-20p802.htm)

Past:

  • Novalynx 255-200 evaporation pan (http://novalynx.com/store/pc/255-200-Class-A-Evaporation-Pan-20p804.htm)

09/27/07: flipped pan upside down. it was already filled with ice

PAR Sensors

Current:

  • LICOR Quantum LI-190SB measures terrestrial PAR (https://www.campbellsci.com/li190sb-l)

06/09/16: swapped with calibrated sensor

07/23/13: swapped with calibrated sensor

05/2013: swapped with calibrated sensor

08/06/2011: swapped with calibrated sensor

08/29/09: swapped with calibrated sensor

Height before 5/16/2013: 1.78 m

  • LICOR Underwater Quantum LI-192SB measures Lake PAR (https://www.licor.com/env/products/light/quantum_underwater.html)

Height: 1.3m below surface on 8/26/16- anchored to bottom so height below surface will vary

8/23/16: swapped with calibrated sensor

summers '13,'14,'15,'16 sensor not cleaned of algal growth, affecting measurements.  The increase in lake PAR levels immediately following the sensor swap on 8/23/16 is likely due to the sensor being free of algae.

07/23/2013: installed

Past

08/13/07: lowered underwater par from 1.3 to 1.8m

06/14/10 cleaned underwater par

08/12/07: cleaned underwater par of algal growth


UV Sensors

Current:

  • Yankee Environmental Systems UVA-1 and UVB-1 measure UVA and UVB radiation (http://www.yesinc.com/products/raduv.html)

03/25/16: swapped both sensors with calibrated sensors

04/19/09: Installed (wiring fixed so logging begins 07/1/2010)


Other Radiation

Current:

  • Kipp & Zonen CMP6 measures "solar radiation" (http://www.kippzonen.com/Product/12/CMP6-Pyranometer#.VvxyPnrAbMs). With CVP2 power adapter (?). 

08/19/08: Installed

  • Kipp & Zonen CNR4 measures longwave and shortwave looking up and looking down (http://www.kippzonen.com/Product/85/CNR-4-Net-Radiometer#.Vv27LXrAaio)

06/09/16: swapped with calibrated sensor

05/13/13: Installed

Past:

  • LICOR Pyranometer LI-200SA measures "Solar Radiation" (https://www.licor.com/env/pdf/light/200.pdf)

08/19/08: removed

04/30/07: installed



Lake Sensors

Current

  • CS 107 measures lake temperature (https://www.campbellsci.com/107)
Height: 2m below surface on 8/26/16 - anchored to bottom so height below surface will vary

08/28/09: Installed/replaced
08/19/08: Installed 
  • CS420 measures lake depth (https://www.campbellsci.com/cs420-l)

Height: 2m below surface on 8/26/16 - anchored to bottom so height below surface will vary

08/13/07: put transducer in pipe


Pressure

Pressure reported here is uncorrected for sea level. Add 85 millibar to correct for sea level.

Current:

  • CS106 Vaisala PTB110 measures Barometric Pressue (https://www.campbellsci.com/cs106)

06/09/16: Installed.

Past:

  • CS100 Serta 278 measures Barometric Pressure (https://www.campbellsci.com/cs100)
06/09/16: removed
  • CS105 Vaisala PTB101B measures Barometric Pressure (https://www.campbellsci.com/cs105)

Snow Depth

Current:

SR50A measures snow depth (https://www.campbellsci.com/sr50a). Snow depth data can be noisy due to blowing snow or very low density snow.  In order to produce the 3 hour data, we took samples every 5 minutes.  We wrote a script that removed instances where there was more than a 1.0 cm of change in 5m, or if there was a grater than 0.5 cm change at the same time as a bad quality number from the instrument.  Once a data point was removed, the filter was stricter for immediately following measurements to be included.  We also manually corrected a handful of points. We then filled in the removed 5 minute points through linear interpolation and applied a 3 hour moving average.

8/26/2015: replaced transducer

8/23/2015: replaced transducer

5/16/2013: installed (possibly incorrectly programed at beginning so data table not storing)


Logger

Current:

CR3000 (https://www.campbellsci.com/cr3000), RF450 pair (https://www.campbellsci.com/rf450), NL100 (https://www.campbellsci.com/nl100)

Past:

CR10x (https://www.campbellsci.com/cr10x), old radios

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