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ERS散射计风速资料反演海面粗糙度 被引量:4

INVERSION OF SEA SURFACE ROUGHNESS FROM WIND SPEED DATA BY ERS
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摘要 本文首先提出了一个利用海面风场计算海面粗糙度(空气动力学粗糙长度)的模式。应用ERS-1/2散射计风速资料,对我国南海海域的海面粗糙度进行了初步的研究。卫星散射计测风具有高精度和高空间分辨率等特点,这对于研究海面粗糙度及波长、周期和波陡等波浪信息研究提供了坚实的数据基础。 This paper first presents a model to calculate the sea surface roughness Zo using wind speed. Zo=10exp[-13(0.61+0. 063U10)^-1/2], where U10 is the wind speed at 10 meters above the sea surface. The sea surface roughness in the South China Sea is derived successfully as an example by using the wind speed data measured with an ERS Scatterometer, which operates by recording the change in radar reflectivity of the sea due to the variation in backscatter from small ripples generated by winds close to the surface.
出处 《海洋湖沼通报》 CSCD 北大核心 2006年第2期7-11,共5页 Transactions of Oceanology and Limnology
关键词 微波散射计 海面粗糙度 海面风速 后向散射系数 阻力系数 摩擦风速 Wind Scatterometer Sea surface roughness sea surface windl normalized radar cross section wind stress coefficient friction velocity
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参考文献13

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二级参考文献14

  • 1Fedor,L.s.,and Brown,G.s.,waveheight and wind speed measurements from the seasat altimeter[J].G.R,1982,87(C5):3254-3260.
  • 2Chelton D B.,McCabe P J.,1985.a review of satellite altimeter measurement of sea surface wind speed:with a proposed new algorithm[J].J.G.R.,90(C3):4707-4720.
  • 3Chelton D.B.,and Wentz F.J.,1986.further development of an improved altimeter wind speed algorithm[J].J.G.R.,91:14250-14260.
  • 4Witter D L.,and Chelton D B.1991.A Geosat altimeter wind speed algorithm and a method for altimeter wind speed algorithm development[J].J.G.R.,96:8853-8860.
  • 5Blackadar A K amd Tennekes H,asymptotic similarity in neutral barotropic planetary boundary layers[J].J.Atmos.Sci.,1968,25:1015-1020.
  • 6Tennekes H,free convection in the turbulent Ekman layer of the atmosphere [J].J.Atmos.Sci.,1970,27:1027-1034.
  • 7R.B.斯塔尔.边界层气象学导论[M].青岛海洋大学出版社,1991.262-265.
  • 8Wu,J.,wind stress and surface roughness at air-sea interface[J].Geophys,res 21(5) 707-714,1969.
  • 9Smith,S.D.,wind stress and heat flux over the ocean in gale force winds[J].J.P.O,1980,10,709-726.
  • 10Carratt J R.review of coefficients over oceans and continents [J].Monthly weather review,1977,105:915-929.

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