SP-613 - SEASAR 2006

ABSTRACT Liaodong bay in Bohai Sea is the main China offshore sea ice region, and SAR images can be used in the operational sea ice monitoring of this area. In this paper, we collected time series of ENVISAT ASAR imageries covering Liaodong bay and analyzed their backscattering distributions and texture features. From the differences between the open water and sea ice in the mean feature images, we extracted the open water. Then the area of sea ice can be obtained. Three SAR images of different time are selected to describe the changes of sea ice extent at different time. Then the results are compared with those obtained from synchronous MODIS images, and the results prove the validation of using SAR images to monitor sea ice extent and its evolution in Liaodong bay

SP-613 - SEASAR 2006

ABSTRACT Large internal solitary waves with long crest are often observed in the northern of South China Sea by using remote sensing imagery. The wide swath remote sensing images such as RADARSAT ScanSAR, ENVISAT ASAR WSM and MODIS can cover a large area and observe several internal solitary wave packets in one scene. And these images have higher temporal resolution. So we can combine several images to monitor internal wave's evolution. In this paper internal waves propagation features are researched by synergy ENVISAT, RADARSAT, MODIS, TM images. The CTD data of internal solitary wave in South China Sea also validate our conclusion

SP-582 Second MSG RAO Workshop

ABSTRACT In this study, five of the Spinning Enhanced Visible and Infrared Imager (SEVIRI) channels are inter-calibrated with similar channels on MODerate resolution Imaging Spectroradiometer (MODIS) and Geostationary Operational Environmental Satellite (GOES)-12/ Visible Infrared Scanner (VIRS). A ray-matching technique combines pairs of pixel sets from each satellite at almost the same times from nearly the same angles. The MODIS and VIRS derived SEVIRI 0.635 and 0.810µm gains indicate to have increased since launch. Monthly gains computed from April to August of 2004 establish that the SEVIRI visible channels are quite stable during this time period. The SEVIRI 3.9µm temperature is colder than the corresponding MODIS and GOES-12 temperatures. However the SEVIRI 11.7µm temperatures are warmer. 1