Search

Your search keyword '"Fan, Guangqiang"' showing total 75 results
Start Over Author "Fan, Guangqiang"
75 results on '"Fan, Guangqiang"'

51. Observations of the summertime atmospheric pollutants vertical distributions and the corresponding ozone production in Shanghai, China

Author

Xing, Chengzhi, primary, Liu, Cheng, additional, Wang, Shanshan, additional, Chan, Ka Lok, additional, Gao, Yang, additional, Huang, Xin, additional, Su, Wenjing, additional, Zhang, Chengxin, additional, Dong, Yunsheng, additional, Fan, Guangqiang, additional, Zhang, Tianshu, additional, Chen, Zhenyi, additional, Hu, Qihou, additional, Su, Hang, additional, Xie, Zhouqing, additional, and Liu, Jianguo, additional

Published
2017
Full Text
View/download PDF

52. Supplementary material to "Observations of the summertime atmospheric pollutants vertical distributions and the corresponding ozone production in Shanghai, China"

Author

Xing, Chengzhi, primary, Liu, Cheng, additional, Wang, Shanshan, additional, Chan, Ka Lok, additional, Gao, Yang, additional, Huang, Xin, additional, Su, Wenjing, additional, Zhang, Chengxin, additional, Dong, Yunsheng, additional, Fan, Guangqiang, additional, Zhang, Tianshu, additional, Chen, Zhenyi, additional, Hu, Qihou, additional, Su, Hang, additional, Xie, Zhouqing, additional, and Liu, Jianguo, additional

Published
2017
Full Text
View/download PDF

54. Characteristics of Boundary Layer Height in Jing-Jin-Ji Area Based on Lidar

Author

吕立慧 Lü Lihui, 张天舒 Zhang Tianshu, 陈臻懿 Chen Zhenyi, 刘 洋 Liu Yang, 项 衍 Xiang Yan, 董云升 Dong Yunsheng, 范广强 Fan Guangqiang, and 刘文清 Liu Wenqing

Subjects
Boundary layer, Lidar, 010504 meteorology & atmospheric sciences, Electrical and Electronic Engineering, 01 natural sciences, Atomic and Molecular Physics, and Optics, Geology, 0105 earth and related environmental sciences, Remote sensing
Published
2017

55. The design and study of a new micropulse Lidar

Author

Li-hui Lü, Chen Zhenyi, Dong Yunsheng, Fan Guangqiang, Tianshu Zhang, Wenqing Liu, Qi Shaoshuai, and Lu Yihuai

Subjects
Data processing, Optical fiber, business.industry, Precision mechanics, Signal, law.invention, Aerosol, Lidar, Optics, law, Bundle, Environmental science, Coaxial, business, Physics::Atmospheric and Oceanic Physics, Remote sensing
Abstract

Micro pulse lidar(MPL) is an effective tool for atmospheric aerosol and cloud detecting. In order to make the structure of the micro pulse lidar more compact, solve the problem that it always very difficult to adjust the transmitting and receiving optical paths to parallel in the traditional system, avoid the influence of the geometric overlap factor and reduce the complexity of the data processing, Anhui institute of optics and fine mechanics of the Chinese academy of sciences designs a new type of micro pulse lidar, particularly designs the followed up optical unit of the micro pulse lidar. A combination of emitting and receiving fibers in a signal bundle changes the structure of the subsequent optical unit in the traditional system to make the transmitting and receiving optical paths coaxial. The public end of the Y type optical fiber bundle is composed of a transmitting optical fiber in the center and eight receiving optical fibers in the periphery. After a brief introduction of the new system, the key parameters of the new micro pulse lidar system and the Y type optical fiber bundle were described in some detail. In order to verify the feasibility of the new structure of the micro pulse lidar system, a continuous observation experiment was carried out in Hefei area to detect the horizontal distribution of the atmospheric aerosol and pollutions. The data measured in the experiment in the November 2013 was processed with Fernald method and the profile of the atmospheric aerosol horizontal extinction coefficient distribution was inverted. The data inversion results showed that: the data acquired by the new lidar system and the extinction coefficient distribution inverted by Fernald algorithm are all very reasonable, and the time-space distribution of atmospheric aerosols extinction coefficient can reflect the distribution of the atmospheric aerosol and pollutions near the ground effectively. All of the experiment results indicate that the design of the new micro pulse lidar system is effective.

Published
2014

56. Application of mobile vehicle lidar for urban air pollution monitoring

Author

Lihui Lv, Lihui Lv, primary, Wenqing Liu, Wenqing Liu, additional, Guangqiang Fan, Guangqiang Fan, additional, Tianshu Zhang, Tianshu Zhang, additional, Yunsheng Dong, Yunsheng Dong, additional, Zhenyi Chen, Zhenyi Chen, additional, Yang Liu, Yang Liu, additional, Haoyun Huang, Haoyun Huang, additional, and and Yang Zhou, and Yang Zhou, additional

Published
2016
Full Text
View/download PDF

59. Retrieve of Planetary Boundary Layer Height Based on Image Edge Detection

Author

项衍 Xiang Yan, 吕立慧 Lü Lihui, 刘建国 Liu Jianguo, 范广强 Fan Guangqiang, 周培松 Zhou Peisong, 张天舒 Zhang Tianshu, 刘洋 Liu Yang, and 叶擎昊 Ye Qinghao

Subjects
Image edge, 010504 meteorology & atmospheric sciences, Planetary boundary layer, 0202 electrical engineering, electronic engineering, information engineering, Environmental science, 020201 artificial intelligence & image processing, 02 engineering and technology, Electrical and Electronic Engineering, 01 natural sciences, Atomic and Molecular Physics, and Optics, 0105 earth and related environmental sciences, Electronic, Optical and Magnetic Materials, Remote sensing
Published
2016

63. The design and study of a new micropulse Lidar

Author

Lü, Lihui, additional, Liu, Wenqing, additional, Zhang, Tianshu, additional, Lu, Yihuai, additional, Dong, Yunsheng, additional, Chen, Zhenyi, additional, Fan, Guangqiang, additional, and Qi, Shaoshuai, additional

Published
2014
Full Text
View/download PDF

66. A New Micro-Pulse Lidar for Atmospheric Horizontal Visibility Measurement

Author

吕立慧 Lü Lihui, 董云升 Dong Yunsheng, 范广强 Fan Guangqiang, 陈臻懿 Chen Zhenyi, 刘文清 Liu Wenqing, 陆亦怀 Lu Yihuai, 亓少帅 Qi Shaoshuai, and 张天舒 Zhang Tianshu

Subjects
Visibility (geometry), Environmental science, Electrical and Electronic Engineering, Atomic and Molecular Physics, and Optics, Micro pulse lidar, Electronic, Optical and Magnetic Materials, Remote sensing
Published
2014

67. Temporal and Spatial Distribution Characteristics of Ozone Based on Differential Absorption Lidar in Beijing

Author

付毅宾 Fu Yibin, 刘建国 Liu Jianguo, 董云升 Dong Yunsheng, 范广强 Fan Guangqiang, 张天舒 Zhang Tianshu, 陈臻懿 Chen Zhenyi, and 刘文清 Liu Wenqing

Subjects
chemistry.chemical_compound, Ozone, chemistry, Beijing, Differential absorption lidar, Environmental science, Electrical and Electronic Engineering, Spatial distribution, Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials, Remote sensing
Published
2014

69. Research of Aerosol Extinction Inverted with Look-Up Table Method Based on Multi-Axis Differential Optical Absorption Spectroscopy

Author

司福祺 Si Fuqi, 刘文清 Liu Wenqing, 谢品华 Xie Pinhua, 刘建国 Liu Jianguo, 李昂 Li Ang, 吴丰成 Wu Fengcheng, 徐晋 Xu Jin, and 范广强 Fan Guangqiang

Subjects
Materials science, Optics, business.industry, Multi axis, Differential optical absorption spectroscopy, Lookup table, Aerosol extinction, business, Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials
Published
2013

71. A Differential Absorption Lidar System for Tropospheric Ozone Monitoring

Author

张天舒 Zhang Tianshu, 陈臻懿 Chen Zhenyi, 刘文清 Liu Wenqing, 范广强 Fan Guangqiang, 陆亦怀 Lu Yihuai, 刘建国 Liu Jianguo, and 董云升 Dong Yunsheng

Subjects
chemistry.chemical_compound, chemistry, Differential absorption lidar, Environmental science, Tropospheric ozone, Electrical and Electronic Engineering, Atmospheric sciences, Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials
Published
2012

73. Application of mobile vehicle lidar for urban air pollution monitoring

Author

Lv, Lihui, Liu, Wenqing, Fan, Guangqiang, Zhang, Tianshu, Dong, Yunsheng, Chen, Zhenyi, Liu, Yang, Huang, Haoyun, and Zhou, Yang

Abstract

A mobile vehicle lidar system has been developed and applied to detect urban air quality. On September 21 and 22, 2015, particulate matter observation with mobile vehicle lidar was carried out in the Binhai New Area of Tianjin. Combined with the latitude and longitude information acquired by a GPS, the three-dimensional distribution of the aerosol extinction coefficient was presented in the experimental area. Furthermore, the source, distribution, and the transportation path of the aerosols in the area were investigated based on lidar data, local meteorological data, and backward trajectory analysis. The results show that mobile vehicle lidar can detect the atmospheric aerosols and reflect the stereoscopic distribution properties of aerosols. The potential of this vehicle lidar system provides a new scientific basis for the study of the source, distribution, and transportation of atmospheric particles.

Published
2016

75. Vertical characteristics of NO 2 and HCHO, and the ozone formation regimes in Hefei, China.

Author

Ren B, Xie P, Xu J, Li A, Qin M, Hu R, Zhang T, Fan G, Tian X, Zhu W, Hu Z, Huang Y, Li X, Meng F, Zhang G, Tong J, Ren H, Zheng J, Zhang Z, and Lv Y

Subjects
China, Environmental Monitoring methods, Nitrogen Dioxide analysis, Air Pollutants analysis, Ozone analysis
Abstract

The research on the mechanism of combined air pollution in the Yangtze-Huaihe region, which is characterized by unique meteorological and geographical conditions and pollution emission characteristics, is still insufficient. We performed an experiment on key pollutants and an ozone formation study in Hefei, which is a pivotal city in the Yangtze-Huaihe region, from September 1 to 20, 2020. The aerosols retrieved via two-dimensional Multi-axis Differential Optical Absorption Spectroscopy (2D-MAX-DOAS) with a Boltzmann-shaped a priori profile had the best agreement with the results of Light Detection and Ranging (LIDAR) and sun-photometer measurements among the three typical a priori profiles (Gaussian, Boltzmann, and exponential shapes). The correlation coefficients of the near-surface gas concentrations retrieved using both 2D-MAX-DOAS and in situ measurements were 0.86 (NO 2 ) and 0.61 (HCHO). The high NO 2 and HCHO concentrations were observed at azimuths of 180° and 315° at heights of 0.8-1.5 km, and they may have been emitted by aircrafts. Importantly, the ratio of HCHO to NO 2 during a typical pollution episode revealed that the factors controlling the O 3 formation changed with altitude: VOCs (surface) to NOx (0.4 km) to transition (1.0 km) to VOCs (1.6 km). Moreover, the effect of VOCs on the O 3 generation was stronger than that of NOx, especially in the downtown area of Hefei. When the ratio of HCHO to NO 2 was 3.55-7.46, the ozone concentration in Hefei could be controlled well, especially at the optimal value of 5.50., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2022. Published by Elsevier B.V.)

Published
2022
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results