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Full-Text Articles in Physical Sciences and Mathematics
Radiation And Cloud Observations On A High Arctic Plateau Ice Cap, M. C. Serreze, Raymond S. Bradley
Radiation And Cloud Observations On A High Arctic Plateau Ice Cap, M. C. Serreze, Raymond S. Bradley
Raymond S Bradley
Hourly measurements of incoming short-wave and long-wave radiation, surface albedo, and net radiation were made on and around a plateau ice cap on north-eastern Ellesmere Island during the summers of 1982 and 1983. These data were stratified by cloud type and amount. All cloud types increased incoming long-wave radiation, especially low dense clouds, fog, and clouds associated with snowfall. Relative transmission of incoming short-wave radiation, expressed as a percentage of clear-sky radiation receipts, was high for all cloud types compared to clouds at lower latitudes. With high surface albedo (~0.75), net radiation was strongly and positively correlated with net long-wave …
Mass Balance Of Two High Arctic Plateau Ice Caps, Raymond S. Bradley, Mark C. Serreze
Mass Balance Of Two High Arctic Plateau Ice Caps, Raymond S. Bradley, Mark C. Serreze
Raymond S Bradley
Mass-balance measurements have been renewed on two small ice caps on north-eastern Ellesmere Island. Original stake networks were established in 1972 and 1976. Since then, both ice caps have experienced significant mass losses averaging -70 to -140 kg m- 2 a-I. They have also decreased in area. The equilibrium line in this area has averaged around 1150 m for the last decade or so. 'The ice caps are remnants of former climatic conditions and are out of equilibrium with contemporary climate.
Topoclimatic Studies Of A High Arctic Plateau Ice Cap, Raymond S. Bradley, Mark C. Serreze
Topoclimatic Studies Of A High Arctic Plateau Ice Cap, Raymond S. Bradley, Mark C. Serreze
Raymond S Bradley
Meteorological observations on and around a small, exposed plateau ice cap on north-eastern Ellesmere Island, N.W.T., Canada, were carried out in the northern summers of 1982 and 1983. The objective was to assess the effect of the ice cap on local climate as the melt season progressed. In 1982, seasonal net radiation totals were lowest on the ice cap and greatest at the site farthest from the ice cap. The ice-cap site received only 35% of net radiation totals on the surrounding tundra. This reflects a gradient in albedo; albedo changed most markedly away from the ice cap as the …