Journal of The School of Marine Science and Technology,Vol.1 No.1
Construction and Validation of Gridded Surface Wind/wind-stress Product over the World Ocean Using Satellite Scatterometer Data
Minoru KASAHARA, Kunio KUTSUWADA, Kunihiro AOKI and Satoshi TAKEDA
Abstract
Data set of gridded surface wind and wind-stress vectors over the world ocean is constructed by satellite scatterometer
with high time and spatial resolutions.Use of the ERS-1／2 in 1992-2000 and the Qscat／SeaWinds since August 1999 permits
us to construct wind/wind-stress products covering twelve years.To establish a long-term product,we make validation for
our ERS and Qscat products together with other ones by intercomparison with in-situ data obtained by moored buoys in
the open ocean,using the data in 2000 in which there are both the ERS and Qscat data.Result reveals that our Qscat product
has the highest reliability in all the products and our ERS’s has a systematic bias in wind speed.We attempt to correct our
ERS gridded data using regressional relation between the ERS and Qscat products in 2000 and reconstruct our ERS product
in the previous years(1992-1999). The corrected ERS product in each year is validated by intercomparison with the moored
buoys,which shows that the resulting product has been obviously improved in reliability,especially in the tropical region.