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6篇 您的检索式:作者名="Xianbin Wen"
    题名 作者 年代 出处 被引量
1Evaluation of Cloud Top Height Retrievals from China’s Next-Generation Geostationary Meteorological Satellite FY-4A显示文摘To evaluate the validity of cloud top height (CTH) retrievals from FY-4A, the first of China's next-generation geostationary meteorological satellite series, the retrievals are compared to those from Himawari-8, CloudSat, Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observations (CALIPSO), and Moderate Resolution Imaging Spectroradiometer (MODIS) operational products from August to October 2017. Regarding CTHs from CloudSat, CALIPSO, and MODIS as truth, the results show that the performance of FY-4A CTH retrievals is similar to that of Himawari-8. Both FY-4A and Himawari-8 retrieve reasonable CTH values for single-layer clouds, but perform poorly for multi-layer clouds. The mean bias error (MBE) shows that the mean value of FY-4A CTH retrievals is smaller than that of Himawari-8 for single-layer clouds but larger for multi-layer clouds. For ice crystal clouds, both FY-4A and Himawari-8 obtain the underestimated CTHs. However, there is a tendency for FY-4A and Himawari-8 to overestimate the CTH values of CloudSat and CALIPSO mainly for low level liquid water clouds. The temperature inversion near the tops of water clouds may result in an overestimation of CTHs. According to the MBE change with altitude, FY-4A and Himawari-8 overestimate the CTHs mainly for clouds below 3 km, and the overestimation is slightly more apparent in Himawari-8 data than that in FY-4A values. As the cloud optical thickness (COT) increases, the CTH bias of FY-4A CTH retrievals gradually decreases. Two typical cases are analyzed to illustrate the differences between different satellites' CTH retrievals in detail.Zhonghui TAN Shuo MA Xianbin ZHAO Wei YAN Wen LU 2019Journal of Meteorological Research2019,33,3:8
2Multiscale modeling for classification of SAR imagery using hybrid EM algorithm and genetic algorithm显示文摘A novel method that hybridizes genetic algorithm (GA) and expectation maximization (EM) algorithm for the classification of synthetic aperture radar (SAR) imagery is proposed by the finite Gaussian mixtures model (GMM) and multiscale autoregressive (MAR) model. This algorithm is capable of improving the global optimality and consistency of the classification performance. The experiments on the SAR images show that the proposed algorithm outperforms the standard EM method significantly in classification accuracy.Xianbin Wen 2009Progress in Natural Science:Materials International2009,19,8:2
3Carbon isotopic composition of mantle xenoliths in alkali basalt from Damaping, Hebei显示文摘The carbon isotopic composition of CO-2, CO and CH-4 extracted by pyrolysis from spinel lherzolite and black pyroxenolite xenoliths in alkali basalt from Damaping has been measured with GC_MS. The results show that, at heating temperatures from 400 to 1 140℃, the δ 13C of CO-2 and CO is -22‰--27‰, and that of CH-4 -30‰--50‰. The data imply that the magma which was generated in the upper mantle by partial melting in the area has experienced the multistage degassing process, and the δ 13C values represent the carbon isotopic composition of CO-2, CO and CH-4 remaining in it, respectively.Gang Liu Xianbin Wang Qibin Wen 1998Chinese Science Bulletin1998,43,24:2
4Drift of nonlinearity in heterodyne interferometer 显示文摘Wen Hou Zhao Xianbin 1994Precision Engineering1994,16,:1
5Human Plague Case Diagnosed in Ningxia Tracked to Animal Reservoirs—Inner Mongolia Autonomous Region,China,2021显示文摘Summary What is already known about this topic?There were a total of 4 and 3 human plague cases that occurred in the Inner Mongolia Autonomous Region in 2019 and 2020,respectively,with 1 and 2 deaths in 2019 and 2020 respectively,which indicated that plague still poses a significant threat to human health especially for farmers,shepherds,or residents living in native plague foci.What is added by this report?On August 14,2021,1 patient from the Otog Qi(County)in the Inner Mongolia sought treatment in Yinchuan City(the capital of Ningxia Hui Autonomous Region).Jianwei Gao Yanhong Hu Cheng Ju Jingyuan Liu Yiting Wang Jiangtao Ma Xiaona Shen Fang Liu Jin Guo Xinxin Yu Wen Zhang Shuyi Wang Kun Li Zhongbing Zhang Biao Kan Wenrui Wang Xianbin Cong Mengguang Fan Wei Li Kuidong Shao Tao Zhang Jianyun Li Yumeng Wang 2021China CDC weekly2021,3,52:1
6Multiscale Segmentation of SAR Images Via Two Neural Networks显示文摘Quan Jinjuan Wen Xianbin Wang Chundong 2008Journal of Optoeleetronies · Laser2008,19,4:1
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