Skip to main content Accessibility help
×
Home

Determination of snow-covered area in different land covers in central Alaska, U.S.A., from aircraft data — April 1995

  • Dorothy K. Hall (a1), James L. Foster (a1), Alfred T. C. Chang (a1), Carl S. Benson (a2) and Janet Y. L. Chien (a3)...

Abstract

During April 1995, a field and aircraft experiment was conducted in central Alaska in support of the Moderate Resolution Imaging Spectroradiometer (MODIS) snow-mapping project. The MODIS Airborne Simulator (MAS), a 50 channel spectroradiometer, was flown on board the NASA ER-2 aircraft. An objective of the mission was to determine the accuracy of mapping snow in different surface covers using an algorithm designed to map global snow cover after the launch of MODIS in 1998. The surface cover in this area of central Alaska is typically spruce, birch, aspen, mixed forest and muskeg. Integrated reflectance, R i was calculated from the visible/near-infrared channels of the MAS sensor. The R i was used to estimate different vegetation-cover densities because there is an inverse relationship between vegetation-cover density and albedo in snow-covered terrain. A vegetation-cover density map was constructed using MAS data acquired on 13 April 1995 over central Alaska. In the part of the scene that was mapped as having a vegetation-cover density of < 50%, the snow-mapping algorithm mapped 96.41% snow cover. These areas are generally composed of muskeg and mixed forests and include frozen lake. In the part of the scene that was estimated to have a vegetation-cover density of ≥50%, the snow-mapping algorithm mapped 71.23% snow cover. These areas are generally composed of dense coniferous or deciduous forests. Overall, the accuracy of the snow-mapping algorithm is > 87.41% for a 13 April MAS scene with a variety of surface covers (coniferous and deciduous and mixed forests, muskeg, tundra and frozen lake).

  • View HTML
    • Send article to Kindle

      To send this article to your Kindle, first ensure no-reply@cambridge.org is added to your Approved Personal Document E-mail List under your Personal Document Settings on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part of your Kindle email address below. Find out more about sending to your Kindle. Find out more about sending to your Kindle.

      Note you can select to send to either the @free.kindle.com or @kindle.com variations. ‘@free.kindle.com’ emails are free but can only be sent to your device when it is connected to wi-fi. ‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.

      Find out more about the Kindle Personal Document Service.

      Determination of snow-covered area in different land covers in central Alaska, U.S.A., from aircraft data — April 1995
      Available formats
      ×

      Send article to Dropbox

      To send this article to your Dropbox account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your <service> account. Find out more about sending content to Dropbox.

      Determination of snow-covered area in different land covers in central Alaska, U.S.A., from aircraft data — April 1995
      Available formats
      ×

      Send article to Google Drive

      To send this article to your Google Drive account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your <service> account. Find out more about sending content to Google Drive.

      Determination of snow-covered area in different land covers in central Alaska, U.S.A., from aircraft data — April 1995
      Available formats
      ×

Copyright

References

Hide All
Chang, A. T C., Foster, J. L. and Hall., D. K. 1987. Nimbus-7 SMMR derived global snow cover parameters. Ann. Glaciol., 9, 3944.
Cutler, P.M. and Munro., D. S. 1996. Visible and near-infrared reflectivity during the ablation period on Peyto Glacier, Alberta, Canada. J. Glaciol., 42(141),333340.
Foster, J. L., Chang, A.T.C. and Hall., D. K. 1994. Snow mass in boreal forests derived from a modified microwave algorithm. In Mougin, E., J., K. Ranson and Smith, J. A. eds. Multispectral and microwave sensing of foresty, hydrology, and natural resources. Bellingham, WA, Society of Photo-optical Instrumentation Engineers, 605617.
Foster, J. L., Hall, D.K. Chang, A.T.C. Rango, A. Wergin, W. and Erbe., E. 1996. Observations of snow crystal shape in cold snowpacks using scanning electron microscopy. In IGARSS'96. Remote Sensing for a Sustainable Future, 27–31 May 1996, Lincoln, Nebraska. Proceedings. Vol. 4. Pisacataway, NJ, Institute of Electrical and Electronic Engineers, 20112013.
Franklin, J. 1986. Thematic mapper analysis of coniferous structure and composition. Int. J. Remote Sensing, 7,12871301.
Hall, D.K., Chang, A.T.C. Foster, J.L. Benson, C.S. and Kovalick., W.M. 1989. Comparison of in situ and Landsat derived reflectance of Alaskan glaciers. Remote Sensing Environ., 28, 2331.
Hall, D.K., Riggs, G.A. and Salomonson., V.V. 1995. Development of methods for mapping global snow cover using Moderate Resolution Imaging Sepctroradiometer (MODIS) data. Remote Sensing Environ., 54(2), 127140.
King, M. D., Menzel, W. P. and 10 others. 1996. Airborne scanning spectrometer for remote sensing of cloud, aerosol, water vapor, and surface properties. J. Almos. Oceanic Technol., 13(4), 777794.
Klein, A. G., Hall, D.K. and Riggs., G. A. 1997. Improving the MODIS global snow-mapping algorithm. In IGARSS'97. 17th International Geoscience and Remote Sensing Symposium, 3–8 August 1997, Singapore. Proceedings. Pisacataway, NJ, Institute of Electrical and Electronics Engineers, 619621.
Knap., W. H. and Oerlemans., J. 1996. The surface albedo of the Greenland ice sheet: satellite-derived and in situ measurements in the Søandre Strømfjord area during the 1991 melt season. J. Glaciol., 42(141),364374.
Kondrat'ev, K.Ya., ed. 1973. Radiation characteristics of the atmosphere and the Earth's surface. Washington, DC, National Aeronautics and Space Administration.
Kuchler., A. W. 1985. Potential natural vegetation. Washington, DC, U.S. Geological Survey, map. (National Atlas.)
Nolin, A.W. and Stroeve., J. 1997. The changing albedo of the Greenland ice sheet: implications for climate modeling. Ann. Glaciol, 25, 5157.
Robinson, D. A. and Kukla., G. 1985. Maximum surface albedo of seasonally snow-covered lands in the Northern Hemisphere. J. Climate Appl. Meteorol., 24(5), 402411.
Townshend, J. R. G., Tucker, C.J. and Goward., S. N. 1993. Global vegetation mapping. In Gurney, R. J., Foster, J. L. and Parkinson, C.L. eds. Atlas of satellite observations related to global change. Cambridge, Cambridge University Press, 301311.
Vanderbilt., V.C. and 9 others. 1991. Biophysical information in asymmetric and symmetric diurnal bidirectional canopy reflectance. IEEE Trans. Geosci. Remote Sensing, GE-29(6),875888.

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed