Abstract
It is of great importance to hindcast sea surface winds accurately under extratropical cyclone conditions. However, accurate wind hindcasting on sea surface is sometimes very difficult since the data resolution is not enough to represent the extratropical cyclone system, and is especially not so before 1996. In this study, therefore, we assimilate mean-sea-level barometric pressure data into the computations with a meso-scale meteorological model to improve the hindcasting accuracy of coastal sea surface winds by 3Dimentional Variational Assimilation scheme. As a result, we can express the movement, strength and detail structure of extratropical cyclone by using 3DVAR, and hindcast accuracy of coastal sea surface wind is improved.
