Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1175/JCLI-D-17-0710.1 |
Spring Arctic Atmospheric Preconditioning: Do Not Rule Out Shortwave Radiation Just Yet | |
Sedlar, Joseph1,2 | |
2018-06-01 | |
发表期刊 | JOURNAL OF CLIMATE |
ISSN | 0894-8755 |
EISSN | 1520-0442 |
出版年 | 2018 |
卷号 | 31期号:11页码:4225-4240 |
文章类型 | Article |
语种 | 英语 |
国家 | Sweden; USA |
英文摘要 | Springtime atmospheric preconditioning of Arctic sea ice for enhanced or buffered sea ice melt during the subsequent melt year has received considerable research focus. Studies have identified enhanced poleward atmospheric transport of moisture and heat during spring, leading to increased emission of longwave radiation to the surface. Simultaneously, these studies ruled out the role of shortwave radiation as an effective preconditioning mechanism because of relatively weak incident solar radiation, high surface albedo from sea ice and snow, and increased clouds during spring. These conclusions are derived primarily from atmospheric reanalysis, which may not always accurately represent the Arctic climate system. Here, top-of-atmosphere shortwave radiation observations from a state-of-the-art satellite sensor are compared with ERA-Interim reanalysis to examine similarities and differences in the springtime absorbed shortwave radiation (ASR) over the Arctic Ocean. Distinct biases in regional location and absolute magnitude of ASR anomalies are found between satellite-based measurements and reanalysis. Observations indicate separability between ASR anomalies in spring corresponding to anomalously low and high ice extents in September; the reanalysis fails to capture the full extent of this separability. The causes for the difference in ASR anomalies between observations and reanalysis are considered in terms of the variability in surface albedo and cloud presence. Additionally, biases in reanalysis cloud water during spring are presented and are considered for their impact on overestimating spring downwelling longwave anomalies. Taken together, shortwave radiation should not be overlooked as a contributing mechanism to springtime Arctic atmospheric preconditioning. |
英文关键词 | Albedo Cloud cover Energy budget balance Ice loss growth Radiative fluxes Shortwave radiation |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000432380400004 |
WOS关键词 | SEA-ICE EXTENT ; CLIMATE MODELS ; SURFACE ALBEDO ; CLOUDS ; TEMPERATURE ; REANALYSES ; TRENDS ; MELT ; VARIABILITY ; TRANSPORT |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/19741 |
专题 | 气候变化 |
作者单位 | 1.Stockholm Univ, Dept Meteorol, Stockholm, Sweden; 2.Univ Colorado Boulder, Cooperat Inst Res Environm Sci, Boulder, CO 80309 USA |
推荐引用方式 GB/T 7714 | Sedlar, Joseph. Spring Arctic Atmospheric Preconditioning: Do Not Rule Out Shortwave Radiation Just Yet[J]. JOURNAL OF CLIMATE,2018,31(11):4225-4240. |
APA | Sedlar, Joseph.(2018).Spring Arctic Atmospheric Preconditioning: Do Not Rule Out Shortwave Radiation Just Yet.JOURNAL OF CLIMATE,31(11),4225-4240. |
MLA | Sedlar, Joseph."Spring Arctic Atmospheric Preconditioning: Do Not Rule Out Shortwave Radiation Just Yet".JOURNAL OF CLIMATE 31.11(2018):4225-4240. |
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