DOI: 10.1007/s00382-012-1455-4
Scopus记录号: 2-s2.0-84875730077
论文题名: TropFlux wind stresses over the tropical oceans: Evaluation and comparison with other products
作者: Praveen Kumar B. ; Vialard J. ; Lengaigne M. ; Murty V.S.N. ; McPhaden M.J. ; Cronin M.F. ; Pinsard F. ; Gopala Reddy K.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2013
卷: 40, 期: 2017-07-08 起始页码: 2049
结束页码: 2071
语种: 英语
英文关键词: Air-sea momentum fluxes
; TropFlux
; Tropics
; Wind stress products validation
英文摘要: In this paper, we present TropFlux wind stresses and evaluate them against observations along with other widely used daily air-sea momentum flux products (NCEP, NCEP2, ERA-I and QuikSCAT). TropFlux wind stresses are computed from the COARE v3. 0 algorithm, using bias and amplitude corrected ERA-I input data and an additional climatological gustiness correction. The wind stress products are evaluated against dependent data from the TAO/TRITON, PIRATA and RAMA arrays and independent data from the OceanSITES mooring networks. Wind stress products are more consistent amongst each other than surface heat fluxes, suggesting that 10 m-winds are better constrained than near-surface thermodynamical parameters (2 m-humidity and temperature) and surface downward radiative fluxes. QuikSCAT overestimates wind stresses away from the equator, while NCEP and NCEP2 underestimate wind stresses, especially in the equatorial Pacific. QuikSCAT wind stress quality is strongly affected by rain under the Inter Tropical Convergence Zones. ERA-I and TropFlux display the best agreement with in situ data, with correlations >0. 93 and rms-differences <0. 012 Nm-2. TropFlux wind stresses exhibit a small, but consistent improvement (at all timescales and most locations) over ERA-I, with an overall 17 % reduction in root mean square error. ERA-I and TropFlux agree best with long-term mean zonal wind stress observations at equatorial latitudes. All products tend to underestimate the zonal wind stress seasonal cycle by ~20 % in the western and central equatorial Pacific. TropFlux and ERA-I equatorial zonal wind stresses have clearly the best phase agreement with mooring data at intraseasonal and interannual timescales (correlation of ~0. 9 versus ~0. 8 at best for any other product), with TropFlux correcting the ~13 % underestimation of ERA-I variance at both timescales. For example, TropFlux was the best at reproducing westerly wind bursts that played a key role in the 1997-1998 El Niño onset. Hence, we recommend the use of TropFlux for studies of equatorial ocean dynamics. © 2012 Springer-Verlag. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/54972
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, 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, Vishakhapatnam, India; NOAA/Pacific Marine Environmental Laboratory, Seattle, WA, United States; Department of Meteorology and Oceanography, Centre for Bay of Bengal Studies, Andhra University, Vishakhapatnam, India
Recommended Citation:
Praveen Kumar B.,Vialard J.,Lengaigne M.,et al. TropFlux wind stresses over the tropical oceans: Evaluation and comparison with other products[J]. Climate Dynamics,2013-01-01,40(2017-07-08)