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DOI | 10.1175/JCLI-D-18-0515.1 |
An Intraseasonal Genesis Potential Index for Tropical Cyclones during Northern Hemisphere Summer | |
Moon, Ja-Yeon1; Wang, Bin2,3,4; Lee, Sun-Seon5,6; Ha, Kyung-Ja7 | |
2018-11-01 | |
发表期刊 | JOURNAL OF CLIMATE
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ISSN | 0894-8755 |
EISSN | 1520-0442 |
出版年 | 2018 |
卷号 | 31期号:22页码:9055-9071 |
文章类型 | Article |
语种 | 英语 |
国家 | South Korea; USA; Peoples R China |
英文摘要 | An intraseasonal genesis potential index (ISGPI) for Northern Hemisphere (NH) summer is proposed to quantify the anomalous tropical cyclone genesis (TCG) frequency induced by boreal summer intraseasonal oscillation (BSISO). The most important factor controlling NH summer TCG is found as 500-hPa vertical motion (omega(500)) caused by the prominent northward shift of large-scale circulation anomalies during BSISO evolution. The omega(500) with two secondary factors (850-hPa relative vorticity weighted by the Coriolis parameter and vertical shear of zonal winds) played an effective role globally and for each individual basin in the northern oceans. The relative contributions of these factors to TCG have minor differences by basins except for the western North Atlantic (NAT), where low-level vorticity becomes the most significant contributor. In the eastern NAT, the BSISO has little control of TCG because weak convective BSISO and dominant 10-30-day circulation signal did not match the overall BSISO life cycle. The ISGPI is shown to reproduce realistic intraseasonal variability of TCG, but the performance is phase-dependent. The ISGPI shows the highest fidelity when BSISO convective anomalies have the largest amplitude in the western North Pacific and the lowest when they are located over the north Indian Ocean and eastern North Pacific. Along the NH major TCG zone, the TCG probability changes from a dry to a wet phase by a large factor ranging from 3 to 12 depending on the basins. The new ISGPI for NH summer can simulate more realistic impact of BSISO on TC genesis compared to canonical GPI derived by climatology. |
英文关键词 | Cyclogenesis cyclolysis Madden-Julian oscillation |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000447119700001 |
WOS关键词 | MADDEN-JULIAN OSCILLATION ; WEST-AFRICAN MONSOON ; OUTGOING LONGWAVE RADIATION ; FREQUENCY EQUATORIAL WAVES ; SHEARED ZONAL FLOW ; GULF-OF-MEXICO ; BOREAL SUMMER ; PART I ; SEASONAL-VARIATIONS ; PACIFIC |
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/19535 |
专题 | 气候变化 |
作者单位 | 1.Asia Pacific Econ Cooperat Climate Ctr, Climate Serv & Res Dept, Busan, South Korea; 2.Univ Hawaii Manoa, Int Pacific Res Ctr, Dept Atmospher Sci, Honolulu, HI 96822 USA; 3.Univ Hawaii Manoa, Atmosphere Ocean Res Ctr, Honolulu, HI 96822 USA; 4.Nanjing Univ Informat Sci & Technol, Earth Syst Modeling Ctr, Nanjing, Jiangsu, Peoples R China; 5.Inst Basic Sci, Ctr Climate Phys, Busan, South Korea; 6.Pusan Natl Univ, Busan, South Korea; 7.Pusan Natl Univ, Dept Atmospher Sci, Div Earth Environm Syst, Busan, South Korea |
推荐引用方式 GB/T 7714 | Moon, Ja-Yeon,Wang, Bin,Lee, Sun-Seon,et al. An Intraseasonal Genesis Potential Index for Tropical Cyclones during Northern Hemisphere Summer[J]. JOURNAL OF CLIMATE,2018,31(22):9055-9071. |
APA | Moon, Ja-Yeon,Wang, Bin,Lee, Sun-Seon,&Ha, Kyung-Ja.(2018).An Intraseasonal Genesis Potential Index for Tropical Cyclones during Northern Hemisphere Summer.JOURNAL OF CLIMATE,31(22),9055-9071. |
MLA | Moon, Ja-Yeon,et al."An Intraseasonal Genesis Potential Index for Tropical Cyclones during Northern Hemisphere Summer".JOURNAL OF CLIMATE 31.22(2018):9055-9071. |
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