Construction of a Data Set of 45-Year Sea Wind Distribution on the Inner Bay and Inland Sea of Japan Using SDP Winds Measurement Data

Abstract

Using the SDP(Surface Data Point) wind data measured at on-land branches of the Japanese Meteorological Agency which are located around the Kanto Sea area, Ise Bay and the Seto Inland Sea, a data set of hourly sea wind distribution on the concerned sea areas is made over a period of 45 years from 1961 to 2005. For that, the wind data interpolated from the SDP data at each of the coastal and sea measurement stations on the concerned areas is transformed into an equivalent of the wind data measured at each station by utilizing close correlation between two kinds of wind data at the same location. Then sea wind distribution is estimated through a spatial interpolation of the equivalent wind data. One finding is that a whole-year averaged wind distribution yields a reasonable approximation of climatic behavior.