Monitoring regional sea ice of the Bohai Seaby SSM/I scattering indices

SSM/I data on the Bohai Sea of China from 1994 to 1996 have been studied.The sea ice algorithms of calibration/validation such as the brightness temperature index [AES/YORK TBI (Hollinger et al.,1992)] and ocean scattering index [OSI (Ferraro et al.,1996,The Bulletin of the American Meteorological Society,77 C5),891-905)] are not applicable to the detection of regional sea ice of mid-latitude Bohai Sea area.A method of the scattering index SI and polarization index PI to identify regional Bohai Sea ice is prerented.Numerical results of vector radiative transfer for a model a layer of sea ice over ocean simulate the relationship between SI/PI and sea ice depth,and others.It is employed to categorize the SI/PI indices for the detection of sea ice.