Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1175/JCLI-D-16-0331.1 |
Storm-Track Response to SST Fronts in the Northwestern Pacific Region in an AGCM | |
Kuwano-Yoshida, Akira1; Minobe, Shoshiro2,3 | |
2017-02-01 | |
发表期刊 | JOURNAL OF CLIMATE
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ISSN | 0894-8755 |
EISSN | 1520-0442 |
出版年 | 2017 |
卷号 | 30期号:3 |
文章类型 | Article |
语种 | 英语 |
国家 | Japan |
英文摘要 | The storm-track response to sea surface temperature (SST) fronts in the northwestern Pacific region is investigated using an atmospheric general circulation model with a 50-km horizontal resolution. The following two experiments are conducted: one with 0.25 degrees daily SST data (CNTL) and the other with smoothed SSTs over an area covering SST fronts associated with the Kuroshio, the Kuroshio Extension, the Oyashio, and the subpolar front (SMTHK). The storm track estimated from the local deepening rate of surface pressure (LDR) exhibits a prominent peak in this region in CNTL in January, whereas the storm-track peak weakens and moves eastward in SMTHK. Storm-track differences between CNTL and SMTHK are only found in explosive deepening events with LDR larger than 1 hPa h(-1). A diagnostic equation of LDR suggests that latent heat release associated with large-scale condensation contributes to the storm-track enhancement. The SST fronts also affect the large-scale atmospheric circulation over the northeastern Pacific Ocean. The jet stream in the upper troposphere tends to meander northward, which is associated with positive sea level pressure (SLP) anomalies in CNTL, whereas the jet stream flows zonally in SMTHK. A composite analysis for the northwestern Pacific SLP anomaly suggests that frequent explosive cyclone development in the northwestern Pacific in CNTL causes downstream positive SLP anomalies over the Gulf of Alaska. Cyclones in SMTHK developing over the northeastern Pacific enhance the moisture flux along the west coast of North America, increasing precipitation in that region. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000395512300015 |
WOS关键词 | SEA-SURFACE TEMPERATURE ; DEVELOPING EXTRATROPICAL CYCLONES ; GULF-STREAM ; ATMOSPHERIC RESPONSE ; NORTHERN-HEMISPHERE ; CLIMATE MODELS ; WAVE-ACTIVITY ; RESOLUTION ; SIMULATIONS ; PERTURBATIONS |
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/19567 |
专题 | 气候变化 |
作者单位 | 1.Japan Agcy Marine Earth Sci & Technol, Applicat Lab, Yokohama, Kanagawa, Japan; 2.Hokkaido Univ, Grad Sch Sci, Dept Nat Hist Sci, Sapporo, Hokkaido, Japan; 3.Hokkaido Univ, Fac Sci, Dept Earth & Planetary Sci, Sapporo, Hokkaido, Japan |
推荐引用方式 GB/T 7714 | Kuwano-Yoshida, Akira,Minobe, Shoshiro. Storm-Track Response to SST Fronts in the Northwestern Pacific Region in an AGCM[J]. JOURNAL OF CLIMATE,2017,30(3). |
APA | Kuwano-Yoshida, Akira,&Minobe, Shoshiro.(2017).Storm-Track Response to SST Fronts in the Northwestern Pacific Region in an AGCM.JOURNAL OF CLIMATE,30(3). |
MLA | Kuwano-Yoshida, Akira,et al."Storm-Track Response to SST Fronts in the Northwestern Pacific Region in an AGCM".JOURNAL OF CLIMATE 30.3(2017). |
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