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Assessing RadiativeFeedbacks and TheirContribution to theArctic AmplificationMeasured by VariousMetrics Huo YilingWang HailongLu Jian2024 год

Assessing Radiative Feedbacks and Their Contribution to the Arctic Amplification Measured by Various Metrics
статья из журнала

Дополнительные ссылки: eLibrary
База данных: Каталог библиотеки СФУ
Библиографическое описание: Assessing Radiative Feedbacks and Their Contribution to the Arctic Amplification Measured by Various Metrics : научное издание / Y. Y. Huo [et al.]. - Текст : непосредственный // Journal of Geophysical Research: Atmospheres. - 2024. - Т. 129, № 21. - ISSN 2169-8996, DOI 10.1029/2024jd040880.
Аннотация: <jats:title>Abstract</jats:title><jats:p>Arctic amplification (AA), characterized by a more rapid surface air temperature (SAT) warming in the Arctic than the global average, is a major feature of global climate warming. Various metrics have been used to quantify AA based on SAT anomalies, trends, or variability, and they can yield quite different conclusions regarding the magnitude and temporal patterns of AA. This study examines and compares various AA metrics for their temporal consistency in the region north of 70°N from the early twentieth to the early 21st century using observational data and reanalysis products. We also quantify contributions of different radiative feedback mechanisms to AA based on short-term climate variability in reanalysis and model data using the Kernel-Gregory approach. Albedo and lapse rate feedbacks are positive and comparable, with albedo feedback being the leading contributor for all AA metrics. The net cloud feedback, which has large uncertainties, depends strongly on the data sets and AA metrics used. By quantifying the influence of internal variability on AA and related feedbacks based on global climate model ensemble simulations, we find that water vapor and cloud feedbacks are most heavily affected by internal variability.</jats:p>
Год издания: 2024
Авторы: Huo Yiling , Wang Hailong , Lu Jian , Fu Qiang , Jonko Alexandra K. , Lee Younjoo J. , Ma Weiming , Maslowski Wieslaw , Qin Yi
Источник: Journal of Geophysical Research: Atmospheres
Выпуск: Т. 129, № 21
Держатель оригинала документа: Atmospheric, Climate, and Earth Sciences Division Pacific Northwest National Laboratory Richland WA USA, Department of Atmospheric and Climate Science University of Washington Seattle WA USA, Department of Oceanography Naval Postgraduate School Monterey CA USA, Earth and Environmental Science Division Los Alamos National Laboratory Los Alamos NM USA
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