DOI: 10.1175/JCLI-D-13-00143.1
Scopus记录号: 2-s2.0-84892492931
论文题名: Local balance and variability of atmospheric heat budget over oceans: Observation and reanalysis-based estimates
作者: Wong S. ; L'ecuyer T.S. ; Olson W.S. ; Jiang X. ; Fetzer E.J.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2014
卷: 27, 期: 2 起始页码: 893
结束页码: 913
语种: 英语
Scopus关键词: Atmospheric heating rate
; Atmospheric infrared sounders
; European centre for medium-range weather forecasts
; Intertropical convergence zone
; Intraseasonal time scale
; Research and application
; Top of the atmospheres
; Tropical rainfall measuring missions
; Cooling
; Heat flux
; Heating rate
; Oceanography
; Subsidence
; Tropics
; Weather forecasting
; Heating
; atmospheric convection
; cooling
; heat budget
; heating
; intertropical convergence zone
; latent heat flux
; marine atmosphere
; sensible heat flux
; top of atmosphere
; TRMM
; weather forecasting
; wind field
英文摘要: The authors quantify systematic differences between modern observation- and reanalysis-based estimates of atmospheric heating rates and identify dominant variability modes over tropical oceans. Convergence of heat fluxes between the top of the atmosphere and the surface are calculated over the oceans using satellitebased radiative and sensible heat fluxes and latent heating from precipitation estimates. The convergence is then compared with column-integrated atmospheric heating based on Tropical Rainfall Measuring Mission data as well as the heating calculated using temperatures from the Atmospheric Infrared Sounder and wind fields from the Modern-Era Retrospective Analysis for Research and Applications (MERRA). Corresponding calculations using MERRA and the European Centre for Medium-Range Weather Forecasts Interim Re-Analysis heating rates and heat fluxes are also performed. The geographical patterns of atmospheric heating rates show heating regimes over the intertropical convergence zone and summertime monsoons and cooling regimes over subsidence areas in the subtropical oceans. Compared to observation-based datasets, the reanalyses have larger atmospheric heating rates in heating regimes and smaller cooling rates in cooling regimes. For the averaged heating rates over the oceans in 40°S-40°N, the observation-based datasets have net atmospheric cooling rates (from 215 to 222Wm2) compared to the reanalyses net warming rates (5.0-5.2Wm2). This discrepancy implies different pictures of atmospheric heat transport. Wavelet spectra of atmospheric heating rates show distinct maxima of variability in annual, semiannual, and/or intraseasonal time scales. In regimes where deep convection frequently occurs, variability is mainly driven by latent heating. In the subtropical subsidence areas, variability in radiative heating is comparable to that in latent heating. © 2014 American Meteorological Society.
资助项目: NASA, National Aeronautics and Space Administration
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/51280
Appears in Collections: 气候变化事实与影响
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作者单位: Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, United States; Department of Atmospheric and Oceanic Sciences, University of Wisconsin-Madison, Madison, WI, United States; JCET, University of Maryland, Baltimore County, Baltimore, United States; NASA Goddard Space Flight Center, Greenbelt, MD, United States; Joint Institute for Regional Earth System Science and Engineering, University of California, Los Angeles, Los Angeles, CA, United States
Recommended Citation:
Wong S.,L'ecuyer T.S.,Olson W.S.,et al. Local balance and variability of atmospheric heat budget over oceans: Observation and reanalysis-based estimates[J]. Journal of Climate,2014-01-01,27(2)