DOI: 10.1175/JCLI-D-14-00780.1
Scopus记录号: 2-s2.0-84947813472
论文题名: An examination of the thermodynamic impacts of western North Pacific tropical cyclones on their tropical tropospheric environment
作者: Schenkel B.A. ; Hart R.E.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2015
卷: 28, 期: 19 起始页码: 7529
结束页码: 7560
语种: 英语
Scopus关键词: Atmospheric temperature
; Boundary layers
; Budget control
; Climatology
; Coastal zones
; Greenhouse effect
; Greenhouse gases
; Heat flux
; Hurricanes
; Mechanical waves
; Oceanography
; Storms
; Surface waters
; Troposphere
; Hurricanes/typhoons
; Madden-Julian oscillation
; Reanalysis
; Sea surface temperature anomalies
; Surface latent heat fluxes
; Thermodynamic anomalies
; Tropical cyclone
; Tropical variability
; Tropics
; latent heat flux
; Madden-Julian oscillation
; Rossby wave
; sea surface temperature
; temperature anomaly
; thermodynamics
; tropical cyclone
; troposphere
; Pacific Ocean
; Pacific Ocean (North)
英文摘要: The present study examines the tropospheric thermodynamic anomalies induced by western North Pacific tropical cyclone (TC) passage using storm-relative composites. Negative moist static energy (MSE) anomalies containing embedded westward-propagating anomalies generally occur only following larger TCs for two months following TC passage in a region extending from the domain center to ~3000 km to its west. Larger TCs force negative MSE anomalies likely because of feedbacks from stronger, broader TC-induced negative sea surface temperature (SST) anomalies and the excitation of TC-induced Rossby waves to the southeast of the TC. The negative MSE anomalies are composed of lower- and midtropospheric negative latent energy anomalies with smaller contributions from boundary layer and uppertropospheric negative sensible heat anomalies. The lower- and midtropospheric negative MSE anomalies are forced by the TC, whereas the upper-tropospheric negative MSE anomalies are forced by the Madden- Julian oscillation. Vertically integratedMSE budgets at the domain center reveal negativeMSE tendencies that are primarily forced by surface latent heat flux anomalies resulting from the TC-induced negative SST anomalies. Smaller negative MSE tendencies are due to 1) zonal and meridional advection of MSE anomalies by the Rossby waves and 2) enhanced top-of-the-atmosphere longwave radiative flux anomalies potentially associated with a reduction in the greenhouse gas effect of water vapor. The budget analysis in the west region is generally similar except that all terms are comparable inmagnitude and relatively weaker. These results conservatively suggest that larger TCs can anomalously cool and dry their synoptic-scale environment for ~40 days following TC passage. © 2015 American Meteorological Society. 资助项目: NSF, National Science Foundation
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/50823
Appears in Collections: 气候变化事实与影响
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作者单位: Department of Atmospheric and Environmental Sciences, University at Albany, State University of New York, Albany, NY, United States; Department of Earth, Ocean and Atmospheric Science, Florida State University, Tallahassee, FL, United States
Recommended Citation:
Schenkel B.A.,Hart R.E.. An examination of the thermodynamic impacts of western North Pacific tropical cyclones on their tropical tropospheric environment[J]. Journal of Climate,2015-01-01,28(19)