Characteristics of temperature fluctuation in Svalbard, in the Arctic (abstract)

元データ 国立極地研究所

概要

This study investigated characteristics of seasonal changes of air temperature in Svalbard. The daily-mean air temperature varied little from May to August. In this season, the daily-mean temperature exceeded zero degrees. Considerable heat was used for melting of ice. In addition, the air in the lower troposphere should mix easily due to the absence of an inversion. In Svalbard, the lowest variability of summer temperature in the Arctic can be observed. In contrast to summer, the highest variability of air temperature in the Arctic occurs in winter in Svalbard. A warming of air temperature occurs in winter in many years. This warm spell is called a "warm core". An automatic weather station at Ny-Alesund observed the warming of air temperature in January 1992. Synoptic weather charts show that advection of warm air from south occurred over Svalbard. The duration and intensity of the warm core are considered to be important factors for the high variability in winter temperature. The air temperature inversion could be destroyed by warming, then mixing of air can occur in the lower troposphere. This event may affect the winter concentration of polluted air which causes arctic haze in the following spring.

著者

Shiraiwa T Institute Of Low Temperature Science Hokkaido University
Watanabe Okitsugu National Institute of Polar Research, Research Organization of Information and Systems
Enomoto Hiroyuki Kitami Institute Of Technology
Takahashi Shuhei Kitami Institute of Technology
Shiraiwa T Disaster Prevention Research Institute Kyoto University
Watanabe Okitsugu National Institute Of Polar Research
Goto‐azuma K National Institute Of Polar Research Research Organization Of Information And Systems
Saito T Institute Of Low Temperature Science Hokkaido University
Goto-azuma Kumiko Nagaoka Institute Of Snow And Ice Studies National Research Institute For Earth Science And Disaster
Goto-azuma Kumiko Nagaoka Institute Of Snow And Ice Studies
Kawaguchi Sadao Fac. Of Agr. Kyushu Univ.
Enomoto H Kitami Institute Of Technology
Kanamori Satoru National Institute of Polar Research
Satow Kazuhide Nagoya Technical College
Kobayashi Shunichi Research Institute Of Hazards In Snowy Area Niigata University
Kawaguchi S Kyushu Univ.
Koga S National Inst. Resources And Environment Tsukuba
Kobayashi Shin'ichi Research Institute Of Hazards In Snowy Areas Niigata University

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