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| Rossby Wave Propagation from the Arctic into the Midlatitudes: Does It Arise from In Situ Latent Heating or a Trans-Arctic Wave Train? | |
| Gong, Tingting1,2,3; Feldstein, Steven B.4; Lee, Sukyoung4 | |
| 2020-05-01 | |
| 发表期刊 | JOURNAL OF CLIMATE
 |
| ISSN | 0894-8755 |
| 卷号 | 33期号:9页码:3619-3633 |
| 通讯作者 | Gong, Tingting(ttg@qdio.ac.cn) |
| 摘要 | The relationship between latent heating over the Greenland, Barents, and Kara Seas (GBKS hereafter) and Rossby wave propagation between the Arctic and midlatitudes is investigated using global reanalysis data. Latent heating is the focus because it is the most likely source of Rossby wave activity over the Arctic Ocean. Given that the Rossby wave time scale is on the order of several days, the analysis is carried out using a daily latent heating index that resembles the interdecadal latent heating trend during the winter season. The results from regression calculations find a trans-Arctic Rossby wave train that propagates from the subtropics, through the midlatitudes, into the Arctic, and then back into midlatitudes over a period of about 10 days. Upon entering the GBKS, this wave train transports moisture into the region, resulting in anomalous latent heat release. At high latitudes, the overlapping of a negative latent heating anomaly with an anomalous high is consistent with anomalous latent heat release fueling the Rossby wave train before it propagates back into the midlatitudes. This implies that the Rossby wave propagation from the Arctic into the midlatitudes arises from trans-Arctic wave propagation rather than from in situ generation. The method used indicates the variance of the trans-Arctic wave train, but not in situ generation, and implies that the variance of the former is greater than that of latter. Furthermore, GBKS sea ice concentration regression against the latent heating index shows the largest negative value six days afterward, indicating that sea ice loss contributes little to the latent heating. |
| DOI | 10.1175/JCLI-D-18-0780.1 |
| 收录类别 | SCI |
| 语种 | 英语 |
| 资助项目 | National Natural Science Foundation of China[41875073] ; National Natural Science Foundation of China[41790473] ; National Science Foundation[AGS-1455577] ; National Science Foundation[AGS-1401220] ; National Science Foundation[AGS-1822015] ; National Science Foundation[OPP-1723832] |
| WOS研究方向 | Meteorology & Atmospheric Sciences |
| WOS类目 | Meteorology & Atmospheric Sciences |
| WOS记录号 | WOS:000568259800012 |
| 出版者 | AMER METEOROLOGICAL SOC |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.qdio.ac.cn/handle/337002/168753 |
| 专题 | 海洋环流与波动重点实验室 |
| 通讯作者 | Gong, Tingting |
| 作者单位 | 1.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Ocean Circulat & Waves, Qingdao, Peoples R China 2.Pilot Natl Lab Marine Sci & Technol Qingdao, Qingdao, Peoples R China 3.Chinese Acad Sci, Ctr Ocean Megasci, Qingdao, Peoples R China 4.Penn State Univ, Dept Meteorol & Atmospher Sci, University Pk, PA 16802 USA |
| 第一作者单位 | 中国科学院海洋研究所; 中国科学院海洋大科学研究中心 |
| 通讯作者单位 | 中国科学院海洋研究所; 中国科学院海洋大科学研究中心 |
| 推荐引用方式 GB/T 7714 | Gong, Tingting,Feldstein, Steven B.,Lee, Sukyoung. Rossby Wave Propagation from the Arctic into the Midlatitudes: Does It Arise from In Situ Latent Heating or a Trans-Arctic Wave Train?[J]. JOURNAL OF CLIMATE,2020,33(9):3619-3633. |
| APA | Gong, Tingting,Feldstein, Steven B.,&Lee, Sukyoung.(2020).Rossby Wave Propagation from the Arctic into the Midlatitudes: Does It Arise from In Situ Latent Heating or a Trans-Arctic Wave Train?.JOURNAL OF CLIMATE,33(9),3619-3633. |
| MLA | Gong, Tingting,et al."Rossby Wave Propagation from the Arctic into the Midlatitudes: Does It Arise from In Situ Latent Heating or a Trans-Arctic Wave Train?".JOURNAL OF CLIMATE 33.9(2020):3619-3633. |
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