DOI: 10.1175/JCLI-D-14-00651.1
Scopus记录号: 2-s2.0-84942867149
论文题名: Tropical cyclone-induced ocean response: A comparative study of the south China sea and tropical northwest Pacific
作者: Mei W. ; Lien C.-C. ; Lin I.-I. ; Xie S.-P.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2015
卷: 28, 期: 15 起始页码: 5952
结束页码: 5968
语种: 英语
Scopus关键词: Atmospheric temperature
; Atmospheric thermodynamics
; Chlorophyll
; Cooling
; Hurricanes
; Nutrients
; Ocean currents
; Storms
; Submarine geophysics
; Surface properties
; Surface waters
; Thermal conductivity
; Tropics
; Wind
; Atmosphere-ocean interactions
; North Pacific Ocean
; Oceanic mixed layers
; Sea surface temperature (SST)
; Tropical cyclone
; Oceanography
; air-sea interaction
; chlorophyll
; mixed layer
; numerical model
; primary production
; sea surface temperature
; tropical cyclone
; Pacific Ocean
; Pacific Ocean (North)
; Pacific Ocean (Northwest)
; South China Sea
英文摘要: The thermocline shoals in the South China Sea (SCS) relative to the tropical northwest Pacific Ocean (NWP), as required by geostrophic balance with the Kuroshio. The present study examines the effect of this difference in ocean state on the response of sea surface temperature (SST) and chlorophyll concentration to tropical cyclones (TCs), using both satellite-derived measurements and three-dimensional numerical simulations. In both regions, TC-produced SST cooling strongly depends on TC characteristics (including intensity as measured by the maximum surface wind speed, translation speed, and size). When subject to identical TCforcing, the SST cooling in the SCS is more than 1.5 times that in the NWP, which may partially explain weaker TC intensity on average observed in the SCS. Both a shallower mixed layer and stronger subsurface thermal stratification in the SCS contribute to this regional difference in SST cooling. The mixed layer effect dominates when TCs are weak, fast-moving, and/or small; and for strong and slow-moving TCs or strong and large TCs, both factors are equally important. In both regions, TCs tend to elevate surface chlorophyll concentration. For identical TC forcing, the surface chlorophyll increase in the SCS is around 10 times that in the NWP, a difference much stronger than that inSST cooling. This large regional difference in the surface chlorophyll response is at least partially due to a shallower nutricline and stronger vertical nutrient gradient in the SCS. The effect of regional difference in upper-ocean density stratification on the surface nutrient response is negligible. The total annual primary production increase associated with the TC passage estimated using the vertically generalized production model in the SCS is nearly 3 times that in the NWP (i.e., 6.4 ± 0.4 × 1012 versus 2.2 ± 0.2 × 1012 g C), despite the weaker TC activity in the SCS. © 2015 American Meteorological Society. 资助项目: NSF, National Oceanic and Atmospheric Administration
; NOAA, National Oceanic and Atmospheric Administration
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/50563
Appears in Collections: 气候变化事实与影响
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作者单位: Scripps Institution of Oceanography, University of California, San Diego, La Jolla, CA, United States; Department of Atmospheric Sciences, National Taiwan University, Taipei, Taiwan; International Pacific Research Center, University of Hawai'i at Manoa, Honolulu, HI, United States
Recommended Citation:
Mei W.,Lien C.-C.,Lin I.-I.,et al. Tropical cyclone-induced ocean response: A comparative study of the south China sea and tropical northwest Pacific[J]. Journal of Climate,2015-01-01,28(15)