globalchange  > 气候变化事实与影响
DOI: 10.1175/JCLI-D-16-0292.1
Scopus记录号: 2-s2.0-85008162848
论文题名:
Tropical cyclone interaction with the ocean: The role of high-frequency (subdaily) coupled processes
作者: Scoccimarro E.; Fogli P.G.; Reed K.A.; Gualdi S.; Masina S.; Navarra A.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2017
卷: 30, 期:1
起始页码: 145
结束页码: 162
语种: 英语
Scopus关键词: Atmospheric temperature ; Climate models ; Hurricanes ; Storms ; Submarine geophysics ; Surface properties ; Surface waters ; Tropics ; Coupled models ; General circulation model ; Hurricanes/typhoons ; Sea surface temperature (SST) ; Tropical cyclone ; Oceanography
英文摘要: Through tropical cyclone (TC) activity the ocean and the atmosphere exchange a large amount of energy. In this work possible improvements introduced by a higher coupling frequency are tested between the two components of a climate model in the representation of TC intensity and TC-ocean feedbacks. The analysis is based on the new Centro Euro-Mediterraneo per I Cambiamenti Climatici Climate Model (CMCC-CM2-VHR), capable of representing realistic TCs up to category-5 storms. A significant role of the negative sea surface temperature (SST) feedback, leading to a weakening of the cyclone intensity, is made apparent by the improved representation of high-frequency coupled processes. The first part of this study demonstrates that a more realistic representation of strong TC count is obtained by coupling atmosphere and ocean components at hourly instead of daily frequency. Coherently, the positive bias of the annually averaged power dissipation index associated with TCs is reduced by one order of magnitude when coupling at the hourly frequency, compared to both forced mode and daily coupling frequency results. The second part of this work shows a case study (a modeled category-5 typhoon) analysis to verify the impact of a more realistic representation of the high-frequency coupling in representing the TC effect on the ocean; the theoretical subsurface warming induced by TCs is well represented when coupling the two components at the higher frequency. This work demonstrates that an increased horizontal resolution of model components is not sufficient to ensure a realistic representation of intense and fast-moving systems, such as tropical and extratropical cyclones, but a concurrent increase in coupling frequency is required. © 2017 American Meteorological Society.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/49726
Appears in Collections:气候变化事实与影响

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作者单位: Istituto Nazionale di Geofisica e Vulcanologia, Fondazione Centro Euro-Mediterraneo sui Cambiamenti Climatici, Bologna, Italy; Fondazione Centro Euro-Mediterraneo sui Cambiamenti Climatici, Bologna, Italy; School of Marine and Atmospheric Sciences, Stony Brook University, Stony Brook, NY, United States

Recommended Citation:
Scoccimarro E.,Fogli P.G.,Reed K.A.,et al. Tropical cyclone interaction with the ocean: The role of high-frequency (subdaily) coupled processes[J]. Journal of Climate,2017-01-01,30(1)
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