Research on Key Technologies of Precise InSAR Surveying and Mapping Applications Using Automatic SAR Imaging Xinming TANG,Tao LI,Xiaoming GAO,Qianfu CHEN,Xiang ZHANG Satellite Surveying and Mapping Application Centre,...Research on Key Technologies of Precise InSAR Surveying and Mapping Applications Using Automatic SAR Imaging Xinming TANG,Tao LI,Xiaoming GAO,Qianfu CHEN,Xiang ZHANG Satellite Surveying and Mapping Application Centre,Beijing 100048,China Abstract:Precise interferometric synthetic aperture radar (InSAR) is a new intelligent photogrammetric technology that uses automatic imaging and processing means.Precise InSAR has become the most efficient satellite surveying and mapping (SASM) method that uses the interferometric phase to create a global digital elevation model (DEM) with high precision.In this paper,we propose the application of systematic InSAR technologies to SASM.展开更多
The South Asian summer monsoon（SASM） precipitation is analyzed based on reanalysis datasets and historical simulation results from 23 climate models of the Coupled Model Intercomparison Project phase 5（CMIP5）. The...The South Asian summer monsoon（SASM） precipitation is analyzed based on reanalysis datasets and historical simulation results from 23 climate models of the Coupled Model Intercomparison Project phase 5（CMIP5）. The results show that most models reproduce well the climatological pattern of SASM precipitation, but the main rainfall period lags that of the reanalysis by one month. The relationship between the simulated SASM precipitation and sea surface temperature anomalies（SSTAs） is quite similar to the reanalysis data. This is attributed to the well-reproduced Walker cell anomaly in the tropical zone. It is projected that the negative correlation between SASM precipitation and SSTAs in the eastern equatorial Pacific will weaken and even reverse to a positive one in the period 2070–2096 under the representative concentration pathway（RCP） scenario with strong external forcing（RCP8.5）, while the change of the correlation under moderate forcing（RCP4.5） still has great uncertainty.展开更多
文摘Research on Key Technologies of Precise InSAR Surveying and Mapping Applications Using Automatic SAR Imaging Xinming TANG,Tao LI,Xiaoming GAO,Qianfu CHEN,Xiang ZHANG Satellite Surveying and Mapping Application Centre,Beijing 100048,China Abstract:Precise interferometric synthetic aperture radar (InSAR) is a new intelligent photogrammetric technology that uses automatic imaging and processing means.Precise InSAR has become the most efficient satellite surveying and mapping (SASM) method that uses the interferometric phase to create a global digital elevation model (DEM) with high precision.In this paper,we propose the application of systematic InSAR technologies to SASM.
基金Supported by the National(Key)Basic Research and Development(973)Program of China(2010CB950503)West Light Foundation of the Chinese Academy of Sciences(Y229D21001)National Natural Science Foundation of China(41130961)
文摘The South Asian summer monsoon（SASM） precipitation is analyzed based on reanalysis datasets and historical simulation results from 23 climate models of the Coupled Model Intercomparison Project phase 5（CMIP5）. The results show that most models reproduce well the climatological pattern of SASM precipitation, but the main rainfall period lags that of the reanalysis by one month. The relationship between the simulated SASM precipitation and sea surface temperature anomalies（SSTAs） is quite similar to the reanalysis data. This is attributed to the well-reproduced Walker cell anomaly in the tropical zone. It is projected that the negative correlation between SASM precipitation and SSTAs in the eastern equatorial Pacific will weaken and even reverse to a positive one in the period 2070–2096 under the representative concentration pathway（RCP） scenario with strong external forcing（RCP8.5）, while the change of the correlation under moderate forcing（RCP4.5） still has great uncertainty.
