Some Instances of Unstable Surface Temperature Conditions During an Arctic Winter
DOI:
https://doi.org/10.14430/arctic3814Keywords:
Animal distribution, Animal migration, Animal population, Animal tagging, Arctic char, Arctic cod, Biology, Crustacea, Economic feasibility, Electrical properties, Fisheries, Fresh-water ecology, Greenland shark, Hydrography, Lakes, Measurement, Meteorology, Oceanography, Oxygen, Plankton, Seals (Animals), Serials, Temperature, Walruses, Water pH, Ungava, Baie d', Québec, Hudson Strait, Nunavut/Québec, Frobisher Bay, Nunavut, Cumberland Sound, Hudson Bay, Foxe Channel, Qeqertarsuaq region, Greenland, Arctic regionsAbstract
Unstable conditions (in which air temperature decreases with increasing height at more than 1 C per 100 m) were recorded (to height of 30 m) at Eielson Air Force Base near Fairbanks, Alaska, during Jan.-Feb. 1954, as part of Alaska ice fog investigations. Weather conditions producing surface instability are (in order of importance in the Arctic): periods of strong insolation when snow surface is in bright sun; periods of heavy overcast with an over-riding warm air mass; periods of ice fog. Observations of each condition are discussed; also frequencies at which various lapse rate conditions occurred at low levels in Jan.-Feb. Instability due to ice fog is of minor importance in arctic climatology generally, as ice fog and its associated lapse rates are restricted to urban areas.Downloads
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