Based on the existing disadvantages of traditional teaching mode of Satellite Meteorology course in Chengdu University of Information Technology and the new teaching mode overview of“Internet Plus flipped class”,thi...Based on the existing disadvantages of traditional teaching mode of Satellite Meteorology course in Chengdu University of Information Technology and the new teaching mode overview of“Internet Plus flipped class”,this paper is mainly to construct flipped class teaching mode of Satellite Meteorology under the background of“Internet Plus”in Chengdu University of Information Technology.Through the Internet,it also tries to integrate this teaching mode into flipped class before class,in class,after class,which means to provide a new thought for the teaching of this course in colleges and universities.展开更多
The course“Introduction to earth science”is a basic general course integrating science and interest run by the School of Atmospheric Sciences in Chengdu University of Information Technology.It is also a public elect...The course“Introduction to earth science”is a basic general course integrating science and interest run by the School of Atmospheric Sciences in Chengdu University of Information Technology.It is also a public elective course for the cultivation of college students'scientific quality.With the development of Internet plus education and the promotion of information technology,the paper combines the traditional offline teaching mode with the online teaching mode adopted during the spring semester in 2020 because of the COVID-19,giving full play to the advantages of the two teaching modes.According to the school's teaching environment and teaching objectives,the online and offline blending teaching mode is constructed by introducing the recording of course video+MOOC+SPOC+online resources of high-quality open courses+Flipped Classroom+Rain Classroom+QQ group+WeChat+Tencent meeting,in order to improve the comprehensive teaching performance,and provide an important reference for the educational reform of similar courses in the post epidemic era.展开更多
Rainfall estimate in arid region using passive microwave remote sensing techniques has been a complex issue for some time.The main reason for this difficulty is that the high and variable emissivity of land surfaces g...Rainfall estimate in arid region using passive microwave remote sensing techniques has been a complex issue for some time.The main reason for this difficulty is that the high and variable emissivity of land surfaces greatly aggravates the complexity of the signatures from the rain cloud.The Xinjiang area,located in the northwest of China,holds all the typical characteristics of arid climate.A rainfall algorithm has been developed for this region by using the Advanced Microwave Scanning Radiometer for Earth Observing System(AMSR-E) measurements.The algorithm attempts to use all 12 chan-nels on the AMSR-E instrument and a two-step method calibrated over 11 days of hourly rain-gauge data.First,Stepwise Discriminant Analysis(SDA) used to optimally estimate rain pixels based on all 12 channels,although only three channels were found to be necessary.Next,a rain predicator scattering index was used to estimate rain rates.A linear relationship between the rain rates and the scattering index above the threshold of 3.0K was constructed with a simple approximately linear function.The estimated rain rates were compared with the rain-gauge data used to calibrate the method,and a good relationship was found with a root-mean-square error of 2.1mm/h.The numerical calculations and comparisons show that the algorithm works well in the Xinjiang area.展开更多
基金This paper is the research achievement of The Teaching Mode Research and Practice of“Internet Plus Flipped Class”——Taking the Course of Satellite Meteorology as Example(JY2018083)the education and teaching research and reform project of Chengdu University of Information Technology in 2018.
文摘Based on the existing disadvantages of traditional teaching mode of Satellite Meteorology course in Chengdu University of Information Technology and the new teaching mode overview of“Internet Plus flipped class”,this paper is mainly to construct flipped class teaching mode of Satellite Meteorology under the background of“Internet Plus”in Chengdu University of Information Technology.Through the Internet,it also tries to integrate this teaching mode into flipped class before class,in class,after class,which means to provide a new thought for the teaching of this course in colleges and universities.
基金This paper is funded by undergraduate teaching engineering project of Chengdu University of Information Technology"Introduction to Earth Sciences"online and offline blending curriculum construction project(BKJX2020020).
文摘The course“Introduction to earth science”is a basic general course integrating science and interest run by the School of Atmospheric Sciences in Chengdu University of Information Technology.It is also a public elective course for the cultivation of college students'scientific quality.With the development of Internet plus education and the promotion of information technology,the paper combines the traditional offline teaching mode with the online teaching mode adopted during the spring semester in 2020 because of the COVID-19,giving full play to the advantages of the two teaching modes.According to the school's teaching environment and teaching objectives,the online and offline blending teaching mode is constructed by introducing the recording of course video+MOOC+SPOC+online resources of high-quality open courses+Flipped Classroom+Rain Classroom+QQ group+WeChat+Tencent meeting,in order to improve the comprehensive teaching performance,and provide an important reference for the educational reform of similar courses in the post epidemic era.
基金supported by Innovation Project of the Chinese Academy of Sciences (KZCX3-SW-229)the National Basic Research Program of China (Grant No.2006CB400504)
文摘Rainfall estimate in arid region using passive microwave remote sensing techniques has been a complex issue for some time.The main reason for this difficulty is that the high and variable emissivity of land surfaces greatly aggravates the complexity of the signatures from the rain cloud.The Xinjiang area,located in the northwest of China,holds all the typical characteristics of arid climate.A rainfall algorithm has been developed for this region by using the Advanced Microwave Scanning Radiometer for Earth Observing System(AMSR-E) measurements.The algorithm attempts to use all 12 chan-nels on the AMSR-E instrument and a two-step method calibrated over 11 days of hourly rain-gauge data.First,Stepwise Discriminant Analysis(SDA) used to optimally estimate rain pixels based on all 12 channels,although only three channels were found to be necessary.Next,a rain predicator scattering index was used to estimate rain rates.A linear relationship between the rain rates and the scattering index above the threshold of 3.0K was constructed with a simple approximately linear function.The estimated rain rates were compared with the rain-gauge data used to calibrate the method,and a good relationship was found with a root-mean-square error of 2.1mm/h.The numerical calculations and comparisons show that the algorithm works well in the Xinjiang area.
