中国近海ASCAT风场反演结果验证分析-海洋预报

中国近海ASCAT风场反演结果验证分析

单位：1. 解放军理工大学气象海洋学院, 江苏南京 211101;
2. 河海大学港口海岸与近海工程学院, 江苏南京 210098

分类号：P732

出版年·卷·期（页码）：2013·30·第四期（27-33）

摘要：

利用NCEP风场产品和dropsonde探测资料，对中国近海ASCAT全场和单点的风速反演精度进行验证分析。研究发现ASCAT反演风场与NCEP风场的风速、风向平均绝对偏差分别为2.06 m/s和21.98°；均方根误差分别为2.87 m/s和34.29°。两者风速反演精度较一致，风向误差相对偏大。ASCAT反演风场与dropsonde探测资料的风速、风向平均绝对偏差分别为1.55 m/s和3.43°；均方根误差分别为1.73 m/s和4.15°。ASCAT资料可以较好的反演台风风场。

Based on NCEP wind data and dropsonde observational data, the accuracy of ASCAT wind products in the China Sea is validated. The results indicates that the mean absolute differences between ASCAT and NCEP data were 2.06 m/s (wind speed) and 21.98°(wind direction) based on the 845 matching samples. Meanwhile, the root-mean-square differences were 2.87 m/s (wind speed) and 34.29°(wind direction). The wind speed retrieval accuracy from ASCAT is close to NCEP while the wind direction difference is relatively large. The mean absolute differences between ASCAT and dropsonde data were 1.55 m/s (wind speed) and 3.43°(wind direction) on the basis of 7 matching samples. The root-mean-square differences between them were 1.73 m/s (wind speed) and 4.15°(wind direction). Hence, the ASCAT wind products well retrieval the tropical cyclones wind field.

参考文献：

[1] Myers P G, Haines K, Josey S. On the importance of the choice of wind stress forcing to the modeling of the Mediterranean Sea circulation[J]. J Geophys Res, 1998, 103:15729-15749.
[2] Paolo M R, Salvatore M, Fabrizio D, et al. Comparison of analyzed and measured wind speeds in the perspective of oceanic simulations over the Mediterranean basin: Analyses, QuikSCAT and buoy data[J]. Journal of Marine Systerms, 2008, 70:33-48.
[3] Weller R A, Anderson S P. Surface meteorology and air-sea fluxes in the western equatorial pacific warm pool during TOGA coupled ocean-atmosphere response experiment[J]. J Climate, 1996, 9: 1959-1990.
[4] Weller R A, Baumgartner M F, Josey S A, et al. Atmospheric forcing in the Arabian Sea during 1994-1995:observations and comparisons with climatology and models[J]. Deep-Sea Res, 1998, Part Ⅱ 45: 1961-1999.
[5] Mears C, Smith D, Wentz F J. Comparison of SSM/I and buoy-measured wind speeds from 1987-1997[J]. J Geophys. Res, 2001, 106(C6):11719-11729.
[6] Ebuchi N, Graber H C, Caruso M J. Evaluation of wind vectors observed by QuikSCAT/SeaWinds using ocean buoy data[J].J. Atmos. Oceanic Technol., 2002, 19:2049-2062.
[7] Pickett M H, Tang W, Rosenfeld L K, et al. QuikSCAT satellite comparison with nearshore buoy wind data off the U.S. west coast[J], J Atmos Oceanic Technol, 2003, 20:1869-1879.
[8] Draper D W, Long D G, An assessment of SeaWinds on QuikSCAT wind retrieval[J]. J Geophys Res, 2002, 107C: 3212. doi: 10.1029/2002JC001330.
[9] Chelton D B, Freilich M H. Scatterometer-based assessment of 10-m wind analyses from the operational ECMWF and NCEP numerical weather prediction models[J]. Mon Weather Rev, 2005, 2: 409-429.
[10] Brennan M J, Hennon C C, Knabb R D. The operational use of QuikSCAT ocean surface vector winds at the National Hurricane Center[J].Weather Forecasting, 2009, 24:621-645.
[11] Hock T F, Franklin J L.The NCAR GPS dropwindsonde[J]. Bull Amer Meteor Soc, 1999, 80(3): 407-420.
[12] Chou K H, Wu C C. Development of the typhoon initialization in a mesoscale model: Combination of the bogused vortex with the dropwind sonde data in DOTSTAR[J].Mon Weather Rev, 2008, 136:865-879.
[13] 彭犁然, 舒守娟. 利用GPS Dropsonde 资料研究"龙王"台风的结构特征[J]. 热带气象学报, 2010, 26(1): 13-21.
[14] Chou K H, Wu C C, Lin P H, et al. Validation of QuikSCAT wind vectors by dropwindsonde data from Dropwindsonde observations for Ty phoon Surveillance Near the Taiwan Region (DOTSTAE)[J]. J Geophys Res, 2010, 115, D02109. doi:10.1029/ 2009JD012131.
[15] Portabella M, Stoffelen A, Verhoef A, et al. A new method for improving ASCAT wind quality control accepted[J]. IEEE Gosci. Remote Sensing Letters, 2012, accepted.
[16] Verspeek J A, Stoffelen A, Portabella M, et al. Validation and calibration of ASCAT using CMOD5.n[J]. Geoscience and Remote Sensing, 2010, 48(1): 386-395.
[17] Verspeek J A, Portabella M, Stoffelen, et al. Calibration and Validation of ASCAT Winds[R]. OSI SAF Technical Report SAF/ OSI/ KNMI/ TEC/ TN/163, 2011.
[18] Vogelzang J, Stoffelen A, Verhoef A, et al. Validation of two-dimensional variational ambiguity removal on SeaWinds scatterometer data[J]. J Atm Oceanic Technol, 2009, 26: 1229-1245.

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