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Recent Changes in the North American Arctic Boundary Layer in Winter
Journal of Geophysical Research (1993)
  • Raymond S. Bradley, University of Massachusetts - Amherst
  • Frank T. Keimig, University of Massachusetts - Amherst
  • Henry F. Diaz
Analysis of significant level radiosonde data from a network of Arctic stations reveals a systematic reduction in midwinter surface-based inversion depths over the past few decades, accompanied by a rise in surtace temperature. Similar trends are observed over a wide sector, from 62°W to 162°W and from 700N to 83°N. Possible causes for these changes include increases in warm air advection, cloud cover, ice crystals, aerosols, and greenhouse gases, but the specific reasons are difficult to identify, due to strong interactions between many potentially important factors. Nevertheless, the changes are significant for studies of Arctic haze, since the midwinter stable boundary layer has been decreasing in depth over time.
Publication Date
May 20, 1993
Citation Information
Raymond S. Bradley, Frank T. Keimig and Henry F. Diaz. "Recent Changes in the North American Arctic Boundary Layer in Winter" Journal of Geophysical Research Vol. 98 Iss. D5 (1993)
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