An observational study of radiation temperature inversions in Fairbanks, Alaska

• Malingowski Julie

  NOAA's National Weather Service, WFO Fairbanks, PO Box 757345, Fairbanks, AK 99775-7345, USA.

• Atkinson David

  Department of Atmospheric Sciences, College of Natural Science and Mathematics, University of Alaska Fairbanks, 903 Koyukuk Drive, Fairbanks, AK 99775-7320, USA.

• Fochesatto Javier

  Department of Atmospheric Sciences, College of Natural Science and Mathematics, University of Alaska Fairbanks, 903 Koyukuk Drive, Fairbanks, AK 99775-7320, USA.

• Cherry Jessica

  International Arctic Research Center, University of Alaska Fairbanks, PO Box 757340, Fairbanks, AK 99775-7340, USA.

• Stevens Eric

  NOAA's National Weather Service, WFO Fairbanks, PO Box 757345, Fairbanks, AK 99775-7345, USA.

抄録

A series of high resolution radiosonde launches were conducted over seven case-study days spanning spring 2009 and fall/winter 2010 during clear and calm nights at Fairbanks, Alaska to evaluate the effects of solar radiation, snow covered surfaces and low-level winds on the formation and evolution of surface-based temperature inversions (SBI). Transition seasons were selected because strong nighttime radiation cooling allows well-defined inversions to form while sufficient daytime solar heating allows the observation of dissipation processes in the sub-arctic latitudes. During the fall/winter period, co-located Doppler phased array acoustic soundings (SODAR) were carried out. The height of the SBI retrieved by radiosonde and SODAR did not differ more than 50 m. However, the SODAR profiles display a much more complex structure in the atmospheric boundary layer. Observations during this experiment demonstrated that the formation of the SBI is initiated by a rapid cooling at the surface followed by a steady columnar cooling and subsequent growth of the SBI depth overnight.

収録刊行物

• Polar science

  Polar science 8 (1), 24-39, 2014-03

  国立極地研究所

キーワード

• Temperature inversion
• Radiation balance
• Arctic meteorology

詳細情報

• CRID: 1571980077775524224
• NII論文ID: 110009687671
• NII書誌ID: AA12240481
• ISSN: 18739652
• 本文言語コード: en
• データソース種別:
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