Visible and near-infrared reflectivities in a mid-latitude glacier basin
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Visible and near-infrared reflectivities in a mid-latitude glacier basin by Paul M. Cutler

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Published by National Library of Canada = Bibliothèque nationale du Canada in Ottawa .
Written in English

Book details:

Edition Notes

SeriesCanadian theses = Thèses canadiennes
The Physical Object
Pagination2 microfiches.
ID Numbers
Open LibraryOL21187383M
ISBN 100315656085

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  Optical visible and near infrared. The optical visible and near infrared (VNIR) regions of electromagnetic spectrum (– μm) are the workhorses of remote sensing. The sensors in the VNIR measure radiance radiated from the object, which is related to the reflectance Cited by: 2. Showing spectral reflectance of snow in visible and near IR region (O'Brian and Munis, ).: Satellite sensors for snow-cover mapping Showing IRS P3 WiFS images in visible ( nm) and SWIR. The Normalized Difference Vegetation Index (NDVI), uses the difference in Landsat’s red and near-infrared reflectivity to assess vegetation, health. But by , a small lake had formed, referred to as Bear Glacier Lagoon. year, beginning on day , will overlap the first composite of the. An energy balance model of surface climate and melt for a glacierized area is described, and applied to simulate ablation and net mass balance on Peyto Glacier. Surface characteristics are assigned according to general knowledge from physical climatology and experimental data from the glacier itself.

[8] The corresponding spectral surface reflectance (– µm) over the WH snow cover for 15 June is shown in Figure 1d. A significant gradient of ~9% absolute difference in the visible–near infrared (– µm, hereafter VIS‐NIR) spectrum is found, with enhanced solar absorption at shorter visible . Data were also obtained for glacier ice on the Athabasca glacier, for melting lake ice, and for certain other nonice surfaces in the vicinity of NARL. Snow and ice albedos are characteristically highest at visible wavelengths, decreasing strongly in the infrared because of . The Sciences and Exploration Directorate is the largest Earth and space science research organization in the world. Its scientists advance understanding of the Earth and its life-sustaining environment, the Sun, the solar system, and the wider universe beyond. The Directorate is part of Goddard Space Flight Center (GSFC) in Greenbelt, Maryland. A semicircular basin in which a valley glacier begins to form. Arête. A narrow and sharp divide between two cirques. Horn. A pyramid-shaped peak formed when three or more cirques cut into the same peak. An example is the Matterhorn, a mountain on the border of Switzerland and Italy.

For the same site, a reflectance value of derived from integrating over most (– μm) of the reflective portion of the electromagnetic spectrum was quite different from the integrated.   Smeets, P., Duynkerke, P. G. and Vugts, H. F. Turbulence characteristics of the stable boundary layer over a mid-latitude glacier. Part i: a combination of katabatic and large-scale forcing. Boundary-Layer Meteorol Snow and ice are characterized by: 1) highly reflectivity (albedo) in the visible wavelengths ( – μm); 2) medium reflectivity in the near-infrared ( – μm); 3) low reflectivity and high emissivity in the thermal infra-red ( - 14 μm); and 4) low absorption and high scattering in the microwave. recrystallization of snow. The Petermann Glacier located in the northwestern part of Greenland has suffered 4 major scalping events in the past 50 years: 1) (km2), 2) (km2), 3) (71km2), 4) (km2).Snow and Ice have high reflectance in the visible range and low reflectance in infrared region.