@article{oai:jaxa.repo.nii.ac.jp:00022370, author = {Kinoshita, Youhei and 島田, 政信 and Furuya, Masato and Kinoshita, Youhei and Shimada, Masanobu and Furuya, Masato}, issue = {17}, journal = {Geophysical Research Letters}, month = {Sep}, note = {[1] This study reports the first detection and analysis of a localized water vapor distribution obtained using interferometric synthetic aperture radar (InSAR) during the Seino heavy rain episode. The InSAR data retrieved during the ALOS/PALSAR emergency observations for the event revealed a radar line-of-sight (LOS) change of up to 130 mm within 10km. Based on the signal, we estimated the three-dimensional water vapor distribution using the ray-tracing method, which indicated a column of nearly saturated water vapor within a 10km2 area reaching from the surface to 9000 m above ground level. To geophysically confirm this signal, Weather Research and Forecasting (WRF) model simulations were performed, revealing a deep convection that was initiated by orographic lift caused by the Yoro Mountains. Another simulation that did not include the Yoro Mountains did not produce a deep convection. The WRF simulation also suggested that the effect of hydrometeors can account for approximately 20% of the maximum LOS change but this effect is even more localized than the effect of water vapor., 資料番号: PA1410001000}, pages = {4740--4744}, title = {InSAR observation and numerical modeling of the water vapor signal during a heavy rain: A case study of the 2008 Seino event, central Japan}, volume = {40}, year = {2013} }