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SNOW AND ICE ALBEDO MEASURED WITH TWO TYPES OF PYRANOMETERS 1
Author(s) -
Henneman Heather E.,
Stefan Heinz G.
Publication year - 1998
Publication title -
jawra journal of the american water resources association
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.957
H-Index - 105
eISSN - 1752-1688
pISSN - 1093-474X
DOI - 10.1111/j.1752-1688.1998.tb05447.x
Subject(s) - pyranometer , snow , albedo (alchemy) , radiation , environmental science , remote sensing , atmospheric sciences , optics , meteorology , physics , geology , art , performance art , art history
In order to obtain total short‐wave albedos of snow and ice, both incident and reflected solar radiation were measured over a frozen lake surface using two different types of radiation measurement devices: a Kipp and Zonen thermopile pyranometer with a spectral sensitivity of 300 to 2800 nm and a LI‐COR photovoltaic pyranometer with a spectral sensitivity of 400 to 1100 am. The spectral response of the LI‐COR pyranometers limits its use as a short‐wave radiation measurement device. Therefore, two equations were developed to adjust both the daily incident radiation data and the daily reflected radiation data measured by the LI‐COR instrument to total short‐wave radiation values, i.e., to the waveband of 300 to 2800 nm (visible to near‐infrared spectrum). The LI‐COR data were then adjusted, and a total short‐wave adjusted albedo was calculated with a modeling efficiency of 0.97.