Altimeter Near Real Time Wind and Wave Products: Random Error Estimation

被引：51

作者：

Abdalla, Saleh ^{[1
]}

Janssen, Peter A. E. M. ^{[1
]}

Bidlot, Jean-Raymond ^{[1
]}

机构：

[1] European Ctr Medium Range Weather Forecasts, Reading RG2 9AX, Berks, England

来源：

MARINE GEODESY | 2011年 / 34卷 / 3-4期

关键词：

Atmospheric model; ECMWF; error estimation; Envisat; FDMAR; OGDR; OSDR radar altimeter; random error; significant wave height; triple collocation technique; WAM; wave buoy; wave model; wind speed; TRIPLE COLLOCATION; VALIDATION; SPEED; BUOY;

D O I：

10.1080/01490419.2011.585113

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

Triple collocation technique is used to estimate the errors in near-real time altimeter wind and wave products of Jason-2, Envisat and Jason-1. Significant wave height (SWH) error is estimated by collocating altimeter products with buoys and model hindcasts over the period August 1, 2009 to July 31, 2010. It is estimated that Jason-2 absolute SWH error is about 0.13 m, or about 5.4% relative to the mean SWH value. The SWH errors of Envisat, Jason-1, buoys and the stand-alone model hindcast are about 6.2%, 7.8%, 8.6% and 9.7%, respectively. The wind speed error is estimated by collocating altimeter products with buoys and ECMWF model 1-day forecast over the same period. Jason-2 wind speed absolute error is about 1.0 m. s(-1) (similar to 11.9% of the mean). For the collocation data sets used, it is found that wind speed errors of Envisat, Jason-1, the buoys and the model 1-day forecast are, respectively, 0.9 m. s(-1), 1.0 m. s(-1), 1.2 m. s(-1) and 1.0 m. s(-1).

引用

页码：393 / 406

页数：14

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