DOI: 10.1007/s00382-011-1115-0
Scopus记录号: 2-s2.0-84856951173
论文题名: TropFlux: Air-sea fluxes for the global tropical oceans-description and evaluation
作者: Kumar B.P. ; Vialard J. ; Lengaigne M. ; Murty V.S.N. ; McPhaden M.J.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2012
卷: 38, 期: 2017-07-08 起始页码: 1521
结束页码: 1543
语种: 英语
英文摘要: In this paper, we evaluate several timely, daily air-sea heat flux products (NCEP, NCEP2, ERA-Interim and OAFlux/ISCCP) against observations and present the newly developed TropFlux product. This new product uses bias-corrected ERA-interim and ISCCP data as input parameters to compute air-sea fluxes from the COARE v3. 0 algorithm. Wind speed is corrected for mesoscale gustiness. Surface net shortwave radiation is based on corrected ISCCP data. We extend the shortwave radiation time series by using "near real-time" SWR estimated from outgoing longwave radiation. All products reproduce consistent intraseasonal surface net heat flux variations associated with the Madden-Julian Oscillation in the Indian Ocean, but display more disparate interannual heat flux variations associated with El Niño in the eastern Pacific. They also exhibit marked differences in mean values and seasonal cycle. Comparison with global tropical moored buoy array data, I-COADS and fully independent mooring data sets shows that the two NCEP products display lowest correlation to mooring turbulent fluxes and significant biases. ERA-interim data captures well temporal variability, but with significant biases. OAFlux and TropFlux perform best. All products have issues in reproducing observed longwave radiation. Shortwave flux is much better captured by ISCCP data than by any of the re-analyses. Our "near real-time" shortwave radiation performs better than most re-analyses, but tends to underestimate variability over the cold tongues of the Atlantic and Pacific. Compared to independent mooring data, NCEP and NCEP2 net heat fluxes display ~0. 78 correlation and >65 W m-2 rms-difference, ERA-I performs better (~0. 86 correlation and ~48 W m-2) while OAFlux and TropFlux perform best (~0. 9 correlation and ~43 W m-2). TropFlux hence provides a useful option for studying flux variability associated with ocean-atmosphere interactions, oceanic heat budgets and climate fluctuations in the tropics. © 2011 Springer-Verlag. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/55343
Appears in Collections: 过去全球变化的重建
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作者单位: Physical Oceanography Division, National Institute of Oceanography, Council of Scientific and Industrial Research (CSIR), Dona Paula, Goa 403004, India; Laboratoire d'Océanographie Expérimentation et Approches Numériques, CNRS, UPMC, IRD, Paris, France; National Institute of Oceanography Regional Centre, Council of Scientific and Industrial Research (CSIR), Visakhapatnam, India; NOAA/Pacific Marine Research Laboratory, Seattle, WA, United States
Recommended Citation:
Kumar B.P.,Vialard J.,Lengaigne M.,et al. TropFlux: Air-sea fluxes for the global tropical oceans-description and evaluation[J]. Climate Dynamics,2012-01-01,38(2017-07-08)