Air temperature variations and gradients along the coast and fjords of western Spitsbergen

Polar Research

Uliana V. Prokhorova¹  Boris V. Ivanov¹  Alexandra V. Urazgildeeva¹  Pavel N. Sviashchennikov²  Przemyslaw Wyszynski³  Rajmund Przybylak³  Herdis M. Gjelten⁴  Eirik J. Førland⁴  Øyvind Nordli⁵  Ketil Isaksen⁵ 

[1] Arctic and Antarctic Research Institute, RU-199397 Bering str. 38, St. Petersburg, Russia;Climatology and Environmental Monitoring Department, St. Petersburg State University, Universitetskaya nab. 7–9, RU-199034, St. Petersburg, Russia;Department of Meteorology and Climatology, Nicolaus Copernicus University, Lwowska 1, PL-87-100 Torun, Poland;Observation and Climate Department, Norwegian Meteorological Institute, PO Box 43 Blindern, NO-0313 Oslo, Norway;Research and Development Department, Norwegian Meteorological Institute, PO Box 43 Blindern, NO-0313 Oslo, Norway;

关键词: Svalbard;    Arctic;    trends;    development;    warming;    temperature changes;   

DOI  :  10.3402/polar.v35.29878

来源: DOAJ

【 摘 要 】

Daily temperature measurements from six meteorological stations along the coast and fjords of western Spitsbergen have been digitized and quality controlled in a Norwegian, Russian and Polish collaboration. Complete daily data series have been reconstructed back to 1948 for all of the stations. One of the station's monthly temperature series has previously been extended back to 1898 and is included in this study. The long-term series show large temperature variability on western Spitsbergen with colder periods in the 1910s and 1960s and warmer periods in the 1930s, 1950s and in the 21st century. The most recent years are the warmest ones in the instrumental records. There is a positive and statistically significant trend in the annual times series for all of the stations; however, the strongest warming is seen in winter and spring. For the period 1979–2015, the linear trends range from 1.0 to 1.3°C/decade for the annual series and from 2.0 to 2.3°C/decade in winter. Threshold statistics demonstrate a decrease in the number of cold days per year and an increase in the number of warm days. A decreasing inter-annual variability is observed. In winter, spring and autumn, the stations in the northernmost areas of west Spitsbergen and in the innermost parts of Isfjorden are the coldest ones. In summer, however, the southernmost station is the coldest one.

【 授权许可】

Unknown