Abstract

In this study, an atmospheric phenomenon, land breeze system, was observed on one image mode high resolution SAR image and one middle resolution optical image. WRF model was implemented with actual meteorological conditions as inputs to successfully simulate this process with some understandable discrepancies. The overpass time of ASAR and MODIS are at 10:35 AM and 11:10 AM local time in Hainan. Long time in-situ observations show that the land breeze process is converting to sea process between 10:00 AM and 12:00 AM. Thus, the satellite observed land breeze front is at its ending stage. That is one possible reason that land breeze front on ASAR image is clearer than on MODIS image. It also explained why the cloud line in MODIS image cannot maintain its shape and started to dissipate. The MODIS image also shows that the land breeze dissipation process is not spatial uniform along the whole land-sea breeze front.

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