Alaska terrestrial and marine climate trends, 1957-2021
| العنوان: | Alaska terrestrial and marine climate trends, 1957-2021 |
|---|---|
| المؤلفون: | Thomas J. Ballinger, Uma S. Bhatt, Peter A. Bieniek, Brian Brettschneider, Rick T. Lader, Jeremy S. Littell, Richard L. Thoman, Christine F. Waigl, John E. Walsh, Melinda A. Webster |
| المصدر: | Journal of Climate. :1-41 |
| بيانات النشر: | American Meteorological Society, 2023. |
| سنة النشر: | 2023 |
| مصطلحات موضوعية: | Atmospheric Science |
| الوصف: | Some of the largest climatic changes in the Arctic have been observed in Alaska and surrounding marginal seas. Near-surface air temperature (T2m), precipitation (P), snowfall, and sea ice changes have been previously documented, often in disparate studies. Here we provide an updated, long-term trend analysis (1957-2021; n=65 years) of such parameters in ERA5, NOAA NClimGrid, NOAA NCEI Alaska climate division, and composite sea ice products preceding the upcoming Fifth National Climate Assessment (NCA5) and other near-future climate reports. In the past half century, annual T2m has broadly increased across Alaska, and during winter, spring, and autumn on the North Slope and North Panhandle (T2m>0.50°C decade−1). P has also increased across climate divisions, and appears strongly interrelated with temperature-sea ice feedbacks on the North Slope, specifically with increased (decreased) open water (sea ice extent). Snowfall equivalent (SFE) has decreased in autumn and spring, perhaps aligned with a regime transition of snow to rain, while winter SFE has broadly increased across the state. Sea ice decline and melt season lengthening also have a pronounced signal around Alaska, with the largest trends in these parameters found in the Beaufort Sea. Alaska’s climatic changes are also placed in context against regional and contiguous U.S. air temperature trends, and show ~50% greater warming in Alaska relative to the lower-48 states. Alaska T2m increases also exceed those of any contiguous U.S. sub-region, positioning Alaska at the forefront of U.S. climate warming. |
| تدمد: | 1520-0442 0894-8755 |
| DOI: | 10.1175/jcli-d-22-0434.1 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::67f498c8f8f9b2340ecdd8268a9b9d76 https://doi.org/10.1175/jcli-d-22-0434.1 |
| Rights: | CLOSED |
| رقم الانضمام: | edsair.doi...........67f498c8f8f9b2340ecdd8268a9b9d76 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 15200442 08948755 |
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| DOI: | 10.1175/jcli-d-22-0434.1 |