Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-19-2655-2019 |
Implication of tropical lower stratospheric cooling in recent trends in tropical circulation and deep convective activity | |
Kodera, Kunihiko1; Eguchi, Nawo2; Ueyama, Rei3; Kuroda, Yuhji1,4; Kobayashi, Chiaki1; Funatsu, Beatriz M.5; Claud, Chantal6 | |
2019-02-28 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS
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ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2019 |
卷号 | 19期号:4页码:2655-2669 |
文章类型 | Article |
语种 | 英语 |
国家 | Japan; USA; France |
英文摘要 | Large changes in tropical circulation from the mid-to-late 1990s to the present, in particular changes related to the summer monsoon and cooling of the sea surface in the equatorial eastern Pacific, are noted. The cause of such recent decadal variations in the tropics was studied using a meteorological reanalysis dataset. Cooling of the equatorial southeastern Pacific Ocean occurred in association with enhanced cross-equatorial southerlies that were associated with a strengthening of the deep ascending branch of the boreal summer Hadley circulation over the continental sector connected to stratospheric circulation. From boreal summer to winter, the anomalous convective activity center moves southward following the seasonal march to the equatorial Indian Ocean-Maritime Continent region, which strengthens the surface easterlies over the equatorial central Pacific. Accordingly, ocean surface cooling extends over the equatorial central Pacific. We suggest that the fundamental cause of the recent decadal change in the tropical troposphere and the ocean is a poleward shift of convective activity that resulted from a strengthening of extreme deep convection penetrating into the tropical tropopause layer, particularly over the African and Asian continents and adjacent oceans. We conjecture that the increase in extreme deep convection is produced by a combination of land surface warming due to increased CO2 and a reduction of static stability in the tropical tropopause layer due to tropical stratospheric cooling. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000459973800007 |
WOS关键词 | BREWER-DOBSON CIRCULATION ; SEA-SURFACE TEMPERATURE ; TROPOPAUSE LAYER ; WARMING HIATUS ; WATER-VAPOR ; PACIFIC ; ATMOSPHERE ; CLOUDS ; ITCZ ; PRECIPITATION |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; 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/25012 |
专题 | 地球科学 |
作者单位 | 1.Meteorol Res Inst, Climate Res Dept, Tsukuba, Ibaraki 3050052, Japan; 2.Kyushu Univ, Res Inst Appl Mech, Kasuga, Fukuoka 8168580, Japan; 3.NASA, Ames Res Ctr, Div Earth Sci, Atmospher Sci Branch, Moffett Field, CA 94035 USA; 4.Japan Meteorol Agcy, Meteorol Coll, Kashiwa, Chiba 2770852, Japan; 5.Univ Nantes, CNRS, UMR 6554 LETG, Campus Tertre, F-44312 Nantes, France; 6.Ecole Polytech, Lab Meteorol Dynam, F-91128 Palaiseau, France |
推荐引用方式 GB/T 7714 | Kodera, Kunihiko,Eguchi, Nawo,Ueyama, Rei,et al. Implication of tropical lower stratospheric cooling in recent trends in tropical circulation and deep convective activity[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2019,19(4):2655-2669. |
APA | Kodera, Kunihiko.,Eguchi, Nawo.,Ueyama, Rei.,Kuroda, Yuhji.,Kobayashi, Chiaki.,...&Claud, Chantal.(2019).Implication of tropical lower stratospheric cooling in recent trends in tropical circulation and deep convective activity.ATMOSPHERIC CHEMISTRY AND PHYSICS,19(4),2655-2669. |
MLA | Kodera, Kunihiko,et al."Implication of tropical lower stratospheric cooling in recent trends in tropical circulation and deep convective activity".ATMOSPHERIC CHEMISTRY AND PHYSICS 19.4(2019):2655-2669. |
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