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Harvard Forest Data Archive

HF237

Snowpack in Hemlock, Hardwood, and Open Sites at Harvard Forest 2008-2014

Related Publications

Data

Overview

  • Lead: Robert Hellstrom
  • Investigators:
  • Contact: Robert Hellstrom
  • Start date: 2008
  • End date: 2014
  • Status: completed
  • Location: Prospect Hill Tract (Harvard Forest)
  • Latitude: +42.532 to +42.539
  • Longitude: -72.189 to -72.178
  • Elevation: 330 to 380 meter
  • Taxa:
  • Release date: 2015
  • Revisions:
  • EML file: knb-lter-hfr.237.2
  • DOI: digital object identifier
  • Related links:
  • Study type: long-term measurement
  • Research topic: forest-atmosphere exchange; watershed ecology
  • LTER core area: disturbance
  • Keywords: climate, hydrology, precipitation, snow, snow water equivalence, water balance
  • Abstract:

    Sub-forest canopy meteorological forcing and snowpack properties can profoundly influence the winter ecology. 3/4 inch graduated PVC snow stakes and web cams were installed at three Harvard Forest (HF) sites including: mixed-hardwood at the Little Prospect Hill (LPH) Eddy Flux Tower, near the Hemlock walk-up tower, and at the open area behind Shaler Hall. Web cameras connected to a laptop at the three sites provided daily images of snowpack surface depth. Snow density profiles were recorded during weekly to monthly site visits from December 2008 to April 2014. Gaps in the datasets were primarily caused by laptop malfunctions and lack of site visits necessary to maintain equipment and to obtain density measurements of the snowpack. There were no site visits to record snowpack properties during the 2011-2012 snow season, a year of unusually low snowfall. These datasets would prove useful for research related to snow ecology and hydrology projects at Harvard Forest.

  • Methods:

    Weekly to biweekly fieldwork during the snow seasons included measurement of snow density profiles at 7 cm intervals and downloading daily web cam images. Snow density was from a 7 cm diameter 180 cm^3 coring tube pushed vertically into the snow pit wall from top to bottom. Two dos-csv databases contain snow depth and density profile data.

  • Use:

    This dataset is released to the public under Creative Commons license CC BY (Attribution). Please keep the designated contact person informed of any plans to use the dataset. Consultation or collaboration with the original investigators is strongly encouraged. Publications and data products that make use of the dataset must include proper acknowledgement.

  • Citation:

    Hellstrom R. 2015. Snowpack in Hemlock, Hardwood, and Open Sites at Harvard Forest 2008-2014. Harvard Forest Data Archive: HF237.

Detailed Metadata

hf237-01: snow depth

  1. year: year
  2. doy: day of year (unit: nominalDay / missing value: NA)
  3. date: date
  4. shaler.depth: snow depth estimated from snow stake (unit: centimeter / missing value: NA)
  5. shaler.density: linear interpolation to fill daily values (unit: kilogramPerCubicMeter / missing value: NA)
  6. shaler.swe: snow water equivalent (unit: centimeter / missing value: NA)
  7. lph.depth: snow depth estimated from snow stake (unit: centimeter / missing value: NA)
  8. lph.density: linear interpolation to fill daily values (unit: kilogramPerCubicMeter / missing value: NA)
  9. lph.swe: snow water equivalent (unit: centimeter / missing value: NA)
  10. hemlock.depth: snow depth estimated from snow stake (unit: centimeter / missing value: NA)
  11. hemlock.density: linear interpolation to fill daily values (unit: kilogramPerCubicMeter / missing value: NA)
  12. hemlock.swe: snow water equivalent (unit: centimeter / missing value: NA)

hf237-02: snow density

  1. date: date
  2. shaler.07: density of vertical snow profile (unit: kilogramPerCubicMeter / missing value: NA)
  3. shaler.14: density of vertical snow profile (unit: kilogramPerCubicMeter / missing value: NA)
  4. shaler.21: density of vertical snow profile (unit: kilogramPerCubicMeter / missing value: NA)
  5. shaler.28: density of vertical snow profile (unit: kilogramPerCubicMeter / missing value: NA)
  6. shaler.35: density of vertical snow profile (unit: kilogramPerCubicMeter / missing value: NA)
  7. shaler.42: density of vertical snow profile (unit: kilogramPerCubicMeter / missing value: NA)
  8. shaler.49: density of vertical snow profile (unit: kilogramPerCubicMeter / missing value: NA)
  9. shaler.56: density of vertical snow profile (unit: kilogramPerCubicMeter / missing value: NA)
  10. shaler.63: density of vertical snow profile (unit: kilogramPerCubicMeter / missing value: NA)
  11. shaler.70: density of vertical snow profile (unit: kilogramPerCubicMeter / missing value: NA)
  12. lph.07: density of vertical snow profile (unit: kilogramPerCubicMeter / missing value: NA)
  13. lph.14: density of vertical snow profile (unit: kilogramPerCubicMeter / missing value: NA)
  14. lph.21: density of vertical snow profile (unit: kilogramPerCubicMeter / missing value: NA)
  15. lph.28: density of vertical snow profile (unit: kilogramPerCubicMeter / missing value: NA)
  16. lph.35: density of vertical snow profile (unit: kilogramPerCubicMeter / missing value: NA)
  17. lph.42: density of vertical snow profile (unit: kilogramPerCubicMeter / missing value: NA)
  18. lph.49: density of vertical snow profile (unit: kilogramPerCubicMeter / missing value: NA)
  19. lph.56: density of vertical snow profile (unit: kilogramPerCubicMeter / missing value: NA)
  20. lph.63: density of vertical snow profile (unit: kilogramPerCubicMeter / missing value: NA)
  21. lph.70: density of vertical snow profile (unit: kilogramPerCubicMeter / missing value: NA)
  22. hemlock.07: density of vertical snow profile (unit: kilogramPerCubicMeter / missing value: NA)
  23. hemlock.14: density of vertical snow profile (unit: kilogramPerCubicMeter / missing value: NA)
  24. hemlock.21: density of vertical snow profile (unit: kilogramPerCubicMeter / missing value: NA)
  25. hemlock.28: density of vertical snow profile (unit: kilogramPerCubicMeter / missing value: NA)
  26. hemlock.35: density of vertical snow profile (unit: kilogramPerCubicMeter / missing value: NA)
  27. hemlock.42: density of vertical snow profile (unit: kilogramPerCubicMeter / missing value: NA)
  28. hemlock.49: density of vertical snow profile (unit: kilogramPerCubicMeter / missing value: NA)
  29. hemlock.56: density of vertical snow profile (unit: kilogramPerCubicMeter / missing value: NA)
  30. hemlock.63: density of vertical snow profile (unit: kilogramPerCubicMeter / missing value: NA)
  31. hemlock.70: density of vertical snow profile (unit: kilogramPerCubicMeter / missing value: NA)