中国近海ASCAT和ERA-Interim风场资料的评估
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摘要
利用中国近海23个浮标对2015年一整年的ASCAT轨道风场和ERA-Interim再分析风场进行质量评估,并对比了ERA-Interim和CFSV2两种再分析风场资料在中国近海的适用性。结果表明:ASCAT在中国近海与浮标风速的一致性优于ERA-Interim,而二者与浮标风向的一致性则相差不大。同时,对比CFSV2与ERA-Interim的误差统计结果发现,CFSV2的风速误差较ERAInterim略小,风向误差相差不大。
In this paper, we evaluate the quality of ASCAT orbital and ERA-Interim reanalysis wind field in 2015 using 23 buoys deployed in China offshore seas, and also compare the suitability of ERA-Interim and CFSV2 reanalysis wind field data for China offshore sea. Compared with buoy observations, it is found that the wind speed of ASCAT is more consistent than that of ERA-Interim reanalysis, whereas the consistency of the two datasets shows no significant difference regarding wind direction. Comparing the error statistics of CFSV2 and ERA-Interim reanalysis, we also demonstrate that the wind speed error of CFSV2 is slightly smaller than that of ERA-Interim reanalysis, and the wind direction error is largely the same.
In this paper, we evaluate the quality of ASCAT orbital and ERA-Interim reanalysis wind field in 2015 using 23 buoys deployed in China offshore seas, and also compare the suitability of ERA-Interim and CFSV2 reanalysis wind field data for China offshore sea. Compared with buoy observations, it is found that the wind speed of ASCAT is more consistent than that of ERA-Interim reanalysis, whereas the consistency of the two datasets shows no significant difference regarding wind direction. Comparing the error statistics of CFSV2 and ERA-Interim reanalysis, we also demonstrate that the wind speed error of CFSV2 is slightly smaller than that of ERA-Interim reanalysis, and the wind direction error is largely the same.
引文
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[8]沈春,项杰,蒋国荣,等.中国近海ASCAT风场反演结果验证分析[J].海洋预报,2013,30(4):27-33.
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[13]詹思玙,齐琳琳,卢伟.基于CCMP资料和现场观测资料的西北太平洋海面风场特征分析[J].海洋预报,2017,34(2):10-20.
[14]Chou K H,Wu C C,Lin S Z.Assessment of the ASCAT wind error characteristics by global dropwindsonde observations[J].Journal of Geophysical Research:Atmospheres,2013,118(16):9011-9021.
[15]毛科峰,陈曦,李妍,等.东中国海域交叉定标多平台合成洋面风场资料的初步评估[J].气象,2012,38(12):1456-1463.
[16]旷芳芳,张友权,张俊鹏,等.3种海面风场资料在台湾海峡的比较和评估[J].海洋学报,2015,37(5):44-53.
[2]杨华庭.近十年来的海洋灾害与减灾[J].海洋预报,2002,19(1):2-8.
[3]邓婉月,项杰,杜华栋.南海海面风场融合研究[C]//第32届中国气象学会年会S18气象卫星遥感新资料--新方法--新应用.天津:中国气象学会,2015.
[4]Bentamy A,Croize-Fillon D,Perigaud C.Characterization of ASCAT measurements based on buoy and QuikSCAT wind vector observations[J].Ocean Science,2008,4(4):265-274.
[5]Verspeek J,Stoffelen A,Portabella M,et al.Validation and calibration of ASCAT using CMOD5.n[J].IEEE Transactions on Geoscience and Remote Sensing,2010,48(1):386-395.
[6]Verhoef A,Stoffelen A.Validation of ASCAT coastal winds,version 1.1[R].2010:10-12.
[7]张凯峰,项杰,杨波,等.基于ERA-interim再分析资料的ASCAT风场产品在南海的精度评估及南海月平均风场特征分析[J].海洋预报,2017,34(2):27-36.
[8]沈春,项杰,蒋国荣,等.中国近海ASCAT风场反演结果验证分析[J].海洋预报,2013,30(4):27-33.
[9]杨晓君,张增海.ASCAT洋面风资料在中国北方海域的真实性检验[J].海洋预报,2014,31(5):8-12.
[10]张增海,曹越男,刘涛,等.ASCAT散射计风场在我国近海的初步检验与应用[J].气象,2014,40(4):473-481.
[11]OSI,SAF.ASCAT wind product user manual[M].Holland:Ocean and Sea Ice SAF,2012:15.
[12]高留喜,朱蓉,常蕊.QuikSCAT和ASCAT卫星反演风场在中国南海北部的适用性研究[J].气象,2014,40(10):1240-1247.
[13]詹思玙,齐琳琳,卢伟.基于CCMP资料和现场观测资料的西北太平洋海面风场特征分析[J].海洋预报,2017,34(2):10-20.
[14]Chou K H,Wu C C,Lin S Z.Assessment of the ASCAT wind error characteristics by global dropwindsonde observations[J].Journal of Geophysical Research:Atmospheres,2013,118(16):9011-9021.
[15]毛科峰,陈曦,李妍,等.东中国海域交叉定标多平台合成洋面风场资料的初步评估[J].气象,2012,38(12):1456-1463.
[16]旷芳芳,张友权,张俊鹏,等.3种海面风场资料在台湾海峡的比较和评估[J].海洋学报,2015,37(5):44-53.