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Collaborative Research:
Snow Accumulation and Snow Melt in a Mixed Northern Hardwood-Conifer Forest

Summary

This data set contains snow depth, Snow Water Equivalent (SWE), and forest cover characteristics for sites at the Hubbard Brook Experimental Forest in northern New Hampshire. Measurements were made at 26 sampling sites on 4 March and 1 April 2009.The data were collected as part of a collaborative research project on isotopic exchange in snow. The project aims to develop a quantitative understanding of the processes active in isotopic exchange between snow/firn and water vapor, which is important to Antarctic ice core interpretation. Data are in Microsoft Excel (.xls) format. The data set also includes maps showing site locations in Joint Photography Experts Group (.jpg) format.

Access to this data set is currently restricted by the principal investigator. Please contact NSIDC User Services for more information.

Citing These Data

We kindly request that you cite the use of this data set in a publication using the following citation example. For more information, see our Use and Copyright Web page.

The following example shows how to cite the use of this data set in a publication. List the principal investigators, year of data set release, data set title, publisher: NSIDC, and digital media.

Wemple, Beverley. 2009. Collaborative Research: Snow Accumulation and Snow Melt in a Mixed Northern Hardwood-Conifer Forest. Boulder, Colorado USA: National Snow and Ice Data Center. http://dx.doi.org/10.7265/N54X55R2.

Overview Table

Category Description
Data format Microsoft Excel (.xls) Format
Spatial coverage and resolution Southernmost Latitude: 43.91°N
Northernmost Latitude: 43.96°N
Westernmost Longitude: 71.77°W
Easternmost Longitude: 71.73°W
Temporal coverage and resolution Data were collected in March and April, 2009
File naming convention HB_Snow_Surveys.xls
File size The data file is approximately 188 KB.
Parameter(s) Snow Depth
Mass
Snow Water Equivalent
Procedures for obtaining data Data are currently restricted. Contact NSIDC User Services for more information.

Table of Contents

  1. Contacts and Acknowledgments
  2. Detailed Data Description
  3. Data Access and Tools
  4. Data Acquisition and Processing
  5. References and Related Publications
  6. Document Information

1. Contacts and Acknowledgments

Investigator(s)

Dr. Beverley C. Wemple
Department of Geography
Old Mill 202
University of Vermont
Burlington, VT 05405
USA

Technical Contact

NSIDC User Services
National Snow and Ice Data Center
CIRES, 449 UCB
University of Colorado
Boulder, CO 80309-0449  USA
phone: +1 303.492.6199
fax: +1 303.492.2468
form: Contact NSIDC User Services
e-mail: nsidc@nsidc.org

Acknowledgements

This research was supported by National Science Foundation (NSF) Office of Polar Programs (OPP) grant number 0338008.

2. Detailed Data Description

Format

Data are in Microsoft Excel (.xls) format. Maps are available in Joint Photography Experts Group (.jpg) format.

File and Directory Structure

Data are currently restricted. They will soon be available on the FTP site in the ftp://sidads.colorado.edu/pub/DATASETS/AGDC/wemple_nsidc_0441/ directory. The data set consists of one Microsoft Excel workbook, HB_Snow_Surveys.xls, which contains 26 sheets corresponding to each survey site. Site locations are identified in Table 2: Site Location Coordinates. Maps show the site locations.

The site naming convention is described as follows:

xyz1

Where:

Table 1. Site Naming Convention
Variable Description
x Aspect (S=south, N=north)
y Elevation (L=low, M=mid, H=high)
z Forest Cover Condition (C=clearing, F=forest)
1 Site number (1, 2, or 3 at each combination of aspect, elevation, cover)


File Size

The Microsoft Excel file is 188 KB. Images range in size from 236 KB to 868 KB.

Spatial Coverage

Samples were collected in the Hubbard Brook Experimental Forest in northern New Hampshire.

Southernmost Latitude: 43.91°N
Northernmost Latitude: 43.96°N
Westernmost Longitude: 71.77°W
Easternmost Longitude: 71.73°W

Site Locations

Table 2. Site Location Coordinates
Site Name Latitude
(decimal degrees)
Longitude
(decimal degrees)
Elevation (meters)
NHC2 43.91904444000 -71.75832778000 901
NHF1 43.91884167000 -71.75999722000 875
NHF2 43.91659167000 -71.76110000000 881
NHF3 43.91674444000 -71.76472778000 852
NHC1 43.91651667000 -71.76686111000 858
NMC2 43.92050278000 -71.76926667000 772
NMF1 43.92036111000 -71.76610278000 737
NMC1 43.92070556000 -71.76556944000 734
NMF2 43.92142222000 -71.76380000000 750
NLC1 43.92760000000 -71.76613056000 615
NLF1 43.92894722000 -71.76602500000 601
NLF2 43.93058889000 -71.76081111000 583
NLC2 43.92923889000 -71.75950278000 600
SLC2 43.95124722000 -71.72888889000 503
SLF2 43.94986389000 -71.72896944000 498
SLF1 43.94995556000 -71.73334444000 523
SLC1 43.95022778000 -71.73449722000 538
SMC1 43.95374167000 -71.73997500000 690
SMF2 43.95241389000 -71.73635556000 598
SMF1 43.95311389000 -71.73437500000 606
SMC2 43.95369167000 -71.73318889000 608
SHC1 43.95581111000 -71.74187778000 768
SHF1 43.95637500000 -71.74142222000 774
SHF2 43.95693611000 -71.74047500000 768
SHF3 43.95725278000 -71.73618333000 739
SHC2 43.95735000000 -71.73488333000 725

Site Location Maps

Map showing site locations on southern slopes
Figure 1. Map of North Facing Slope Site Locations

South facing  slopes location map
Figure 2. Map of South Facing Slope Site Locations

Temporal Coverage

Data were collected on 4 March and 1 April, 2009.

Parameter or Variable

Parameters include snow depth, mass, and Snow Water Equivalent (SWE) for 26 sites. Samples were taken at 5 meter intervals going east to west and north to south from the first sample location. Additional information regarding the site location and forest cover conditions is identified in the site name, as described above in Table 1. Samples were collected using Adirondack snow tubes. Snow tube diameter, radius, and area is listed for each set of samples.

Parameter Description

Table 3. Description of Parameters in the HB_Snow_Surveys.xls File
Parameter Description
Distance Distance from first sample location, in meters.
Depth Snow depth, in centimeters and/or inches
Mass Mass in grams or kilograms
SWE Snow Water Equivalent, in centimeters and/or inches
Tube Depth Snow Tube Depth, in centimeters
Tube Radius Snow Tube Radius, in centimeters
Tube Area Snow Tube Area, in centimeters^2

Sample Data Record

sample distance
(m)
depth
(in)
depth
(cm)
mass
(oz)
mass
(kg)
tare
(kg)
mass
(g)
SWE
(in)
SWE
(cm)
1 0 57 3.2 1.61 1590 30.85582802
2 5 82 2.9 1.61 1290 25.03397367
3 10 76 3.06 1.61 1450 28.13896266

 

Tube diameter (cm) 8.1
Tube radius (cm) 4.05
Tube area (cm^2) 51.5299735

 

3. Data Access and Tools

Data Access

Data are currently restricted. Contact User Services for more information.

Volume

The total volume of the data set is about 1000 KB.

Software and Tools

Data are accessible using spreadsheet software.

4. Data Acquisition and Processing

Theory of Measurements

This data set contains snow mass, snow depth, and SWE data collected at 26 field sites in New Hampshire.

Sensor or Instrument Description

Samples were collected using Adirondack snow tubes.

Data Acquisition Methods

Samples were taken at 5 meter intervals going east to west and north to south from the first sample location. Additional information regarding the site location and forest cover conditions is identified in the site name, as described above in Table 1. Snow tube diameter, radius, and area is listed for each set of samples.

Related Data Collections

5. References and Related Publications

Penn, C. A., B. C. Wemple, and J. L. Campbell. 2009. Forest Influence on Peak Snow Accumulation and Snowmelt in a Mixed Northern Hardwood-Conifer Forest of the Northeastern U.S. American Geophysical Union Fall Meeting. C31B-0439.

The following related documents are available on the NSIDC Web site:

Table 4. Related Documents
Document Description URL
Antarctic Glaciological Data Center Data Center Web site http://nsidc.org/agdc/

6. Document Information

Acronyms

The following acronyms are used in this document.

Table 5. Acronyms and Abbreviations
Acronym Description
FTP File Transfer Protocol
NSIDC National Snow and Ice Data Center
SWE Snow Water Equivalent
URL Uniform Resource Locator

Document Creation Date

1 January 2010

Document URL

http://nsidc.org/data/docs/agdc/nsidc0441_wemple/index.html