Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1175/JAS-D-18-0371.1 |
Relationship between Tropical and Extratropical Diabatic Heating and Their Impact on Stationary-Transient Wave Interference | |
Park, Mingyu; Lee, Sukyoung | |
2019-09-01 | |
发表期刊 | JOURNAL OF THE ATMOSPHERIC SCIENCES |
ISSN | 0022-4928 |
EISSN | 1520-0469 |
出版年 | 2019 |
卷号 | 76期号:9页码:2617-2633 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | During boreal winter, the climatological stationary wave plays a key role in the poleward transport of heat in mid- and high latitudes. Latent heating is an important driver of boreal-winter stationary waves. In this study, the temporal relationship between tropical and extratropical heating and transient-stationary wave interference is investigated by performing observational data analyses and idealized model experiments. In line with stationary wave theory, the observed heating anomaly fields during constructive interference events have a spatial structure that reinforces the zonal asymmetry of the climatological heating field. The observational analysis shows that about 10 days prior to constructive interference events, tropical heating anomalies are established, and within 1 week North Pacific and then North Atlantic heating anomalies follow. This result suggests that constructive interference involves a heating-circulation relay: tropical latent heating drives circulation anomalies that transport moisture in such a manner as to increase latent heating in the North Pacific; circulation anomalies driven by this North Pacific heating similarly lead to enhanced latent heating in the North Atlantic. This heating-circulation relay picture is supported by initial-value model calculations in which the observed heating anomalies are used to drive model circulations. Our results also show that the constructive interference driven by both tropical and extratropical diabatic heating generates a relatively large-amplitude wave in high latitudes and leads to particularly prolonged Arctic warming episodes, whereas when both the tropical and extratropical diabatic heating are weak, constructive interference is confined to midlatitudes and does not lead to Arctic warming. |
英文关键词 | Atmospheric circulation Large-scale motions Stationary waves Latent heating cooling General circulation models Intraseasonal variability |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000480545200001 |
WOS关键词 | STEADY LINEAR-RESPONSE ; OSCILLATION |
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/186790 |
专题 | 地球科学 |
作者单位 | Penn State Univ, Dept Meteorol & Atmospher Sci, University Pk, PA 16802 USA |
推荐引用方式 GB/T 7714 | Park, Mingyu,Lee, Sukyoung. Relationship between Tropical and Extratropical Diabatic Heating and Their Impact on Stationary-Transient Wave Interference[J]. JOURNAL OF THE ATMOSPHERIC SCIENCES,2019,76(9):2617-2633. |
APA | Park, Mingyu,&Lee, Sukyoung.(2019).Relationship between Tropical and Extratropical Diabatic Heating and Their Impact on Stationary-Transient Wave Interference.JOURNAL OF THE ATMOSPHERIC SCIENCES,76(9),2617-2633. |
MLA | Park, Mingyu,et al."Relationship between Tropical and Extratropical Diabatic Heating and Their Impact on Stationary-Transient Wave Interference".JOURNAL OF THE ATMOSPHERIC SCIENCES 76.9(2019):2617-2633. |
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