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| DOI | 10.1175/JCLI-D-19-0937.1 |
| The role of horizontal temperature advection in arctic amplification | |
| Clark J.P.; Shenoy V.; Feldstein S.B.; Lee S.; Goss M. | |
| 发表日期 | 2021 |
| ISSN | 08948755 |
| 起始页码 | 2957 |
| 结束页码 | 2976 |
| 卷号 | 34期号:8 |
| 英文摘要 | The wintertime (December-February) 1990-2016 Arctic surface air temperature (SAT) trend is examined using self-organizing maps (SOMs). The high-dimensional SAT dataset is reduced into nine representative SOM patterns, with each pattern exhibiting a decorrelation time scale of about 10 days and having about 85% of its variance coming from intraseasonal time scales. The trend in the frequency of occurrence of each SOM pattern is used to estimate the interdecadal Arctic winter warming trend associated with the SOM patterns. It is found that trends in the SOM patterns explain about one-half of the SAT trend in the Barents and Kara Seas, one-third of the SAT trend around Baffin Bay, and two-thirds of the SAT trend in the Chukchi Sea. A composite calculation of each term in the thermodynamic energy equation for each SOM pattern shows that the SAT anomalies grow primarily through the advection of the climatological temperature by the anomalous wind. This implies that a substantial fraction of Arctic amplification is due to horizontal temperature advection that is driven by changes in the atmospheric circulation. An analysis of the surface energy budget indicates that the skin temperature anomalies as well as the trend, although very similar to that of the SAT, are produced primarily by downward longwave radiation. © 2021 American Meteorological Society. For information regarding reuse of this content and general copyright information, consult the AMS Copyright |
| 英文关键词 | Arctic; Climate change; Interdecadal variability; Teleconnections; Thermodynamics; Trends |
| 语种 | 英语 |
| scopus关键词 | Advection; Budget control; Conformal mapping; Self organizing maps; Arctic surface air temperature; Atmospheric circulation; Intraseasonal time scale; Long-wave radiation; Self organizing maps(soms); Skin temperatures; Surface energy budget; Thermodynamic energy; Atmospheric temperature; air temperature; atmospheric circulation; climate change; data set; decadal variation; longwave radiation; surface temperature; teleconnection; temperature anomaly; thermodynamics; timescale; trend analysis; variance analysis; warming; Arctic; Arctic Ocean; Baffin Bay [Arctic Ocean]; Chukchi Sea |
| 来源期刊 | Journal of Climate
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/178652 |
| 作者单位 | Department of Meteorology and Atmospheric Science, The Pennsylvania State University, University Park, PA, United States; School of Meteorology, University of Oklahoma, Norman, OK, United States; Department of Earth System Science, Stanford University, Stanford, CA, United States |
| 推荐引用方式 GB/T 7714 | Clark J.P.,Shenoy V.,Feldstein S.B.,et al. The role of horizontal temperature advection in arctic amplification[J],2021,34(8). |
| APA | Clark J.P.,Shenoy V.,Feldstein S.B.,Lee S.,&Goss M..(2021).The role of horizontal temperature advection in arctic amplification.Journal of Climate,34(8). |
| MLA | Clark J.P.,et al."The role of horizontal temperature advection in arctic amplification".Journal of Climate 34.8(2021). |
| 条目包含的文件 | 条目无相关文件。 | |||||
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