抄録
Atmospheric delays estimated by Global Positioning System (GPS) together with station coordinates provide valuable information for meteorological studies. We report climatological behaviors of the atmospheric water vapor over 13 years period 1996-2008 using daily precipitable water vapor (PWV) data in the F3 solution at ∼1,000 receivers of GPS stations in Japan. Long-term PWV changes presented variety of climatological signatures including interannual changes due to El Niño/Southern Oscillation (ENSO), longer-term changes of a decadal time scale. We compare such changes with those inferred by climatological studies.
