Capability of Raman lidar for monitoring the variation of atmospheric CO2 profile

Lidar （Light detection and ranging） has special capabilities for remote sensing of many different behaviours of the atmosphere. One of the techniques which show a great deal of promise for several applications is Raman scattering. The detecting capability, including maximum operation range and minimum detectable gas concentration is one of the most significant parameters for lidar remote sensing of pollutants. In this paper, based on the new method for evaluating the capabilities of a Raman lidar system, we present an evaluation of detecting capability of Raman lidar for monitoring atmospheric CO2 in Hefei. Numerical simulations about the influence of atmospheric conditions on lidar detecting capability were carried out, and a conclusion can be drawn that the maximum difference of the operation ranges caused by the weather conditions alone can reach about 0.4 to 0.5km with a measuring precision within 30ppmv. The range of minimum detectable concentration caused by the weather conditions alone can reach about 20 to 35 ppmv in vertical direction for 20000 shots at a distance of 1 km on the assumption that other parameters are kept constant. The other corresponding parameters under different conditions are also given. The capability of Raman lidar operated in vertical direction was found to be superior to that operated in horizontal direction. During practical measurement with the Raman lidar whose hardware components were fixed, aerosol scattering extinction effect would be a significant factor that influenced the capability of Raman lidar. This work may be a valuable reference for lidar system designing, measurement accuracy improving and data processing.

Capability of Raman lidar for monitoring the variation of atmospheric CO2 profile

Lidar (Light detection and ranging) has special capabilities forremote sensing of many different behaviours of the atmosphere. Oneof the techniques which show a great deal of promise for severalapplications is Raman scattering. The detecting capability,including maximum operation range and minimum detectable gasconcentration is one of the most significant parameters for lidarremote sensing of pollutants. In this paper, based on the new methodfor evaluating the capabilities of a Raman lidar system, we presentan evaluation of detecting capability of Raman lidar for monitoringatmospheric CO拉曼激光雷达;大气;CO2;浓缩度Raman lidar, atmosphericCO拉曼激光雷达;大气;CO2;浓缩度Raman lidar, atmosphericCO拉曼激光雷达;大气;CO2;浓缩度Raman lidar, atmosphericCO拉曼激光雷达;大气;CO2;浓缩度Raman lidar, atmospheric CO2, minimum detectable concentrationProject supported by National HighTechnology Development Program of China (Grant No 2002AA135030).2007-05-112007-07-25Lidar （Light detection and ranging） has special capabilities for remote sensing of many different behaviours of the atmosphere. One of the techniques which show a great deal of promise for several applications is Raman scattering. The detecting capability, including maximum operation range and minimum detectable gas concentration is one of the most significant parameters for lidar remote sensing of pollutants. In this paper, based on the new method for evaluating the capabilities of a Raman lidar system, we present an evaluation of detecting capability of Raman lidar for monitoring atmospheric CO2 in Hefei. Numerical simulations about the influence of atmospheric conditions on lidar detecting capability were carried out, and a conclusion can be drawn that the maximum difference of the operation ranges caused by the weather conditions alone can reach about 0.4 to 0.5km with a measuring precision within 30ppmv. The range of minimum detectable concentration caused by the weather conditions alone can reach about 20 to 35 ppmv in vertical direction for 20000 shots at a distance of 1 km on the assumption that other parameters are kept constant. The other corresponding parameters under different conditions are also given. The capability of Raman lidar operated in vertical direction was found to be superior to that operated in horizontal direction. During practical measurement with the Raman lidar whose hardware components were fixed, aerosol scattering extinction effect would be a significant factor that influenced the capability of Raman lidar. This work may be a valuable reference for lidar system designing, measurement accuracy improving and data processing.Anhui Institute of Optics and Fine Mechanics,ChineseAcademy of Sciences, Hefei 230031, China;Department of Optical Engineering, Laboratory ofPhotoelectric Imaging and Information Engineering, Beijing Instituteof Technology, Beijing 100081, China;Department of Chemical Physics, University of Science andTechnology of China, Hefei 230026, China;Anhui Institute of Optics and Fine Mechanics,ChineseAcademy of Sciences, Hefei 230031, China;Anhui Institute of Optics and Fine Mechanics,ChineseAcademy of Sciences, Hefei 230031, China;Anhui Institute of Optics and Fine Mechanics,ChineseAcademy of Sciences, Hefei 230031, China;College of Physics and Electronics, Shandong NormalUniversity, Jinan 250014, China;Anhui Institute of Optics and Fine Mechanics,ChineseAcademy of Sciences, Hefei 230031, ChinaE-mail： peitaozhao@sohu.com, peitaozhao@163.com/qk/85823A/200801/26433211.html{2}$, minimum detectable concentrationProject supported by National HighTechnology Development Program of China (Grant No 2002AA135030).2007-05-112007-07-25Lidar （Light detection and ranging） has special capabilities for remote sensing of many different behaviours of the atmosphere. One of the techniques which show a great deal of promise for several applications is Raman scattering. The detecting capability, including maximum operation range and minimum detectable gas concentration is one of the most significant parameters for lidar remote sensing of pollutants. In this paper, based on the new method for evaluating the capabilities of a Raman lidar system, we present an evaluation of detecting capability of Raman lidar for monitoring atmospheric CO2 in Hefei. Numerical simulations about the influence of atmospheric conditions on lidar detecting capability were carried out, and a conclusion can be drawn that the maximum difference of the operation ranges caused by the weather conditions alone can reach about 0.4 to 0.5km with a measuring precision within 30ppmv. The range of minimum detectable concentration caused by the weather conditions alone can reach about 20 to 35 ppmv in vertical direction for 20000 shots at a distance of 1 km on the assumption that other parameters are kept constant. The other corresponding parameters under different conditions are also given. The capability of Raman lidar operated in vertical direction was found to be superior to that operated in horizontal direction. During practical measurement with the Raman lidar whose hardware components were fixed, aerosol scattering extinction effect would be a significant factor that influenced the capability of Raman lidar. This work may be a valuable reference for lidar system designing, measurement accuracy improving and data processing.Anhui Institute of Optics and Fine Mechanics,ChineseAcademy of Sciences, Hefei 230031, China;Department of Optical Engineering, Laboratory ofPhotoelectric Imaging and Information Engineering, Beijing Instituteof Technology, Beijing 100081, China;Department of Chemical Physics, University of Science andTechnology of China, Hefei 230026, China;Anhui Institute of Optics and Fine Mechanics,ChineseAcademy of Sciences, Hefei 230031, China;Anhui Institute of Optics and Fine Mechanics,ChineseAcademy of Sciences, Hefei 230031, China;Anhui Institute of Optics and Fine Mechanics,ChineseAcademy of Sciences, Hefei 230031, China;College of Physics and Electronics, Shandong NormalUniversity, Jinan 250014, China;Anhui Institute of Optics and Fine Mechanics,ChineseAcademy of Sciences, Hefei 230031, ChinaE-mail： peitaozhao@sohu.com, peitaozhao@163.com/qk/85823A/200801/26433211.html9265V, 7830, 8670LLidar (Light detection and ranging) has special capabilities forremote sensing of many different behaviours of the atmosphere. Oneof the techniques which show a great deal of promise for severalapplications is Raman scattering. The detecting capability,including maximum operation range and minimum detectable gasconcentration is one of the most significant parameters for lidarremote sensing of pollutants. In this paper, based on the new methodfor evaluating the capabilities of a Raman lidar system, we presentan evaluation of detecting capability of Raman lidar for monitoringatmospheric CO拉曼激光雷达;大气;CO2;浓缩度Raman lidar, atmosphericCO拉曼激光雷达;大气;CO2;浓缩度Raman lidar, atmosphericCO拉曼激光雷达;大气;CO2;浓缩度Raman lidar, atmospheric CO2, minimum detectable concentrationProject supported by National HighTechnology Development Program of China (Grant No 2002AA135030).2007-05-112007-07-25Lidar （Light detection and ranging） has special capabilities for remote sensing of many different behaviours of the atmosphere. One of the techniques which show a great deal of promise for several applications is Raman scattering. The detecting capability, including maximum operation range and minimum detectable gas concentration is one of the most significant parameters for lidar remote sensing of pollutants. In this paper, based on the new method for evaluating the capabilities of a Raman lidar system, we present an evaluation of detecting capability of Raman lidar for monitoring atmospheric CO2 in Hefei. Numerical simulations about the influence of atmospheric conditions on lidar detecting capability were carried out, and a conclusion can be drawn that the maximum difference of the operation ranges caused by the weather conditions alone can reach about 0.4 to 0.5km with a measuring precision within 30ppmv. The range of minimum detectable concentration caused by the weather conditions alone can reach about 20 to 35 ppmv in vertical direction for 20000 shots at a distance of 1 km on the assumption that other parameters are kept constant. The other corresponding parameters under different conditions are also given. The capability of Raman lidar operated in vertical direction was found to be superior to that operated in horizontal direction. During practical measurement with the Raman lidar whose hardware components were fixed, aerosol scattering extinction effect would be a significant factor that influenced the capability of Raman lidar. This work may be a valuable reference for lidar system designing, measurement accuracy improving and data processing.Anhui Institute of Optics and Fine Mechanics,ChineseAcademy of Sciences, Hefei 230031, China;Department of Optical Engineering, Laboratory ofPhotoelectric Imaging and Information Engineering, Beijing Instituteof Technology, Beijing 100081, China;Department of Chemical Physics, University of Science andTechnology of China, Hefei 230026, China;Anhui Institute of Optics and Fine Mechanics,ChineseAcademy of Sciences, Hefei 230031, China;Anhui Institute of Optics and Fine Mechanics,ChineseAcademy of Sciences, Hefei 230031, China;Anhui Institute of Optics and Fine Mechanics,ChineseAcademy of Sciences, Hefei 230031, China;College of Physics and Electronics, Shandong NormalUniversity, Jinan 250014, China;Anhui Institute of Optics and Fine Mechanics,ChineseAcademy of Sciences, Hefei 230031, ChinaE-mail： peitaozhao@sohu.com, peitaozhao@163.com/qk/85823A/200801/26433211.html{2}$, minimum detectable concentrationProject supported by National HighTechnology Development Program of China (Grant No 2002AA135030).2007-05-112007-07-25Lidar （Light detection and ranging） has special capabilities for remote sensing of many different behaviours of the atmosphere. One of the techniques which show a great deal of promise for several applications is Raman scattering. The detecting capability, including maximum operation range and minimum detectable gas concentration is one of the most significant parameters for lidar remote sensing of pollutants. In this paper, based on the new method for evaluating the capabilities of a Raman lidar system, we present an evaluation of detecting capability of Raman lidar for monitoring atmospheric CO2 in Hefei. Numerical simulations about the influence of atmospheric conditions on lidar detecting capability were carried out, and a conclusion can be drawn that the maximum difference of the operation ranges caused by the weather conditions alone can reach about 0.4 to 0.5km with a measuring precision within 30ppmv. The range of minimum detectable concentration caused by the weather conditions alone can reach about 20 to 35 ppmv in vertical direction for 20000 shots at a distance of 1 km on the assumption that other parameters are kept constant. The other corresponding parameters under different conditions are also given. The capability of Raman lidar operated in vertical direction was found to be superior to that operated in horizontal direction. During practical measurement with the Raman lidar whose hardware components were fixed, aerosol scattering extinction effect would be a significant factor that influenced the capability of Raman lidar. This work may be a valuable reference for lidar system designing, measurement accuracy improving and data processing.Anhui Institute of Optics and Fine Mechanics,ChineseAcademy of Sciences, Hefei 230031, China;Department of Optical Engineering, Laboratory ofPhotoelectric Imaging and Information Engineering, Beijing Instituteof Technology, Beijing 100081, China;Department of Chemical Physics, University of Science andTechnology of China, Hefei 230026, China;Anhui Institute of Optics and Fine Mechanics,ChineseAcademy of Sciences, Hefei 230031, China;Anhui Institute of Optics and Fine Mechanics,ChineseAcademy of Sciences, Hefei 230031, China;Anhui Institute of Optics and Fine Mechanics,ChineseAcademy of Sciences, Hefei 230031, China;College of Physics and Electronics, Shandong NormalUniversity, Jinan 250014, China;Anhui Institute of Optics and Fine Mechanics,ChineseAcademy of Sciences, Hefei 230031, ChinaE-mail： peitaozhao@sohu.com, peitaozhao@163.com/qk/85823A/200801/26433211.html9265V, 7830, 8670LLidar (Light detection and ranging) has special capabilities forremote sensing of many different behaviours of the atmosphere. Oneof the techniques which show a great deal of promise for severalapplications is Raman scattering. The detecting capability,including maximum operation range and minimum detectable gasconcentration is one of the most significant parameters for lidarremote sensing of pollutants. In this paper, based on the new methodfor evaluating the capabilities of a Raman lidar system, we presentan evaluation of detecting capability of Raman lidar for monitoringatmospheric CO$_{2}$ in Hefei. Numerical simulations about theinfluence of atmospheric conditions on lidar detecting capabilitywere carried out, and a conclusion can be drawn that the maximumdifference of the operation ranges caused by the weather conditionsalone can reach about 0.4 to 0.5km with a measuring precision within30ppmv. The range of minimum detectable concentration caused by theweather conditions alone can reach about 20 to 35 ppmv in verticaldirection for 20000 shots at a distance of 1 km on the assumptionthat other parameters are kept constant. The other correspondingparameters under different conditions are also given. The capabilityof Raman lidar operated in vertical direction was found to besuperior to that operated in horizontal direction. During practicalmeasurement with the Raman lidar whose hardware components werefixed, aerosol scattering extinction effect would be a significantfactor that influenced the capability of Raman lidar. This work maybe a valuable reference for lidar system designing, measurementaccuracy improving and data processing.