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DOI | 10.1007/s00382-018-4134-2 |
Tropical cyclogenesis in warm climates simulated by a cloud-system resolving model | |
Fedorov, Alexey V.1; Muir, Les1; Boos, William R.2; Studholme, Joshua1,3 | |
2019 | |
发表期刊 | CLIMATE DYNAMICS |
ISSN | 0930-7575 |
EISSN | 1432-0894 |
出版年 | 2019 |
卷号 | 52页码:107-127 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Russia |
英文摘要 | Here we investigate tropical cyclogenesis in warm climates, focusing on the effect of reduced equator-to-pole temperature gradient relevant to past equable climates and, potentially, to future climate change. Using a cloud-system resolving model that explicitly represents moist convection, we conduct idealized experiments on a zonally periodic equatorial -plane stretching from nearly pole-to-pole and covering roughly one-fifth of Earth's circumference. To improve the representation of tropical cyclogenesis and mean climate at a horizontal resolution that would otherwise be too coarse for a cloud-system resolving model (15km), we use the hypohydrostatic rescaling of the equations of motion, also called reduced acceleration in the vertical. The simulations simultaneously represent the Hadley circulation and the intertropical convergence zone, baroclinic waves in mid-latitudes, and a realistic distribution of tropical cyclones (TCs), all without use of a convective parameterization. Using this model, we study the dependence of TCs on the meridional sea surface temperature gradient. When this gradient is significantly reduced, we find a substantial increase in the number of TCs, including a several-fold increase in the strongest storms of Saffir-Simpson categories 4 and 5. This increase occurs as the mid-latitudes become a new active region of TC formation and growth. When the climate warms we also see convergence between the physical properties and genesis locations of tropical and warm-core extra-tropical cyclones. While end-members of these types of storms remain very distinct, a large distribution of cyclones forming in the subtropics and mid-latitudes share properties of the two. |
英文关键词 | Tropical cyclones Climate change Atmospheric modeling Paleoclimate |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000460619200007 |
WOS关键词 | SEA-SURFACE TEMPERATURE ; CONVECTIVE SELF-AGGREGATION ; CYCLONE ACTIVITY ; EQUATORIAL PACIFIC ; STORM TRACKS ; CIRCULATION ; INTENSITY ; FREQUENCY ; ITCZ ; SENSITIVITY |
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/35891 |
专题 | 气候变化 |
作者单位 | 1.Yale Univ, Dept Geol & Geophys, 210 Whitney Ave, New Haven, CT 06511 USA; 2.Univ Calif Berkeley, Dept Earth & Planetary Sci, 307 McCone Hall, Berkeley, CA 94720 USA; 3.Russian Acad Sci, Dept Phys, Shirshov Inst Oceanol, 36 Nakhimovsky Ave, Moscow 117997, Russia |
推荐引用方式 GB/T 7714 | Fedorov, Alexey V.,Muir, Les,Boos, William R.,et al. Tropical cyclogenesis in warm climates simulated by a cloud-system resolving model[J]. CLIMATE DYNAMICS,2019,52:107-127. |
APA | Fedorov, Alexey V.,Muir, Les,Boos, William R.,&Studholme, Joshua.(2019).Tropical cyclogenesis in warm climates simulated by a cloud-system resolving model.CLIMATE DYNAMICS,52,107-127. |
MLA | Fedorov, Alexey V.,et al."Tropical cyclogenesis in warm climates simulated by a cloud-system resolving model".CLIMATE DYNAMICS 52(2019):107-127. |
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