Exceptional warming over the Barents area

Autor: Ketil Isaksen, Øyvind Nordli, Boris Ivanov, Morten A. Ø. Køltzow, Signe Aaboe, Herdis M. Gjelten, Abdelkader Mezghani, Steinar Eastwood, Eirik Førland, Rasmus E. Benestad, Inger Hanssen-Bauer, Ragnar Brækkan, Pavel Sviashchennikov, Valery Demin, Anastasiia Revina, Tatiana Karandasheva
Jazyk: angličtina
Rok vydání: 2022
Předmět:
Zdroj: Scientific Reports, Vol 12, Iss 1, Pp 1-18 (2022)
Druh dokumentu: article
ISSN: 2045-2322
DOI: 10.1038/s41598-022-13568-5
Popis: Abstract In recent decades, surface air temperature (SAT) data from Global reanalyses points to maximum warming over the northern Barents area. However, a scarcity of observations hampers the confidence of reanalyses in this Arctic hotspot region. Here, we study the warming over the past 20–40 years based on new available SAT observations and a quality controlled comprehensive SAT dataset from the northern archipelagos in the Barents Sea. We identify a statistically significant record-high annual warming of up to 2.7 °C per decade, with a maximum in autumn of up to 4.0 °C per decade. Our results are compared with the most recent global and Arctic regional reanalysis data sets, as well as remote sensing data records of sea ice concentration (SIC), sea surface temperature (SST) and high-resolution ice charts. The warming pattern is primarily consistent with reductions in sea ice cover and confirms the general spatial and temporal patterns represented by reanalyses. However, our findings suggest even a stronger rate of warming and SIC-SAT relation than was known in this region until now.
Databáze: Directory of Open Access Journals
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