Accuracy Analysis of the Aerosol Backscatter Coefficient Profiles Derived from the CYY-2B Ceilometer
Ceilometers are originally designed for cloud base height monitoring. Since a few years, the number of ceilometers available worldwide is rapidly increasing, and these simple backscatter lidars are investigated to be used for aerosol research. This study presents an assessment of the potential of CY...
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| Format: | Article |
| Language: | English |
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Wiley
2018-01-01
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| Series: | Advances in Meteorology |
| Online Access: | http://dx.doi.org/10.1155/2018/9738197 |
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| author | Lei Liu Ting Zhang Yi Wu Qi Wang Taichang Gao |
| author_facet | Lei Liu Ting Zhang Yi Wu Qi Wang Taichang Gao |
| author_sort | Lei Liu |
| collection | DOAJ |
| description | Ceilometers are originally designed for cloud base height monitoring. Since a few years, the number of ceilometers available worldwide is rapidly increasing, and these simple backscatter lidars are investigated to be used for aerosol research. This study presents an assessment of the potential of CYY-2B ceilometer for the quantitative retrieval of aerosol properties. The signal-to-noise ratio of the ceilometer is calculated, and the effective height of inversion is determined. It is shown that the effective height of the ceilometer for backscatter coefficient profile inversion is 3-4 km at night and about 1.5–2 km during the day, which is lower than that of the micropulse lidar (MPL) system. The accuracy of the backscatter coefficient profiles derived from the CYY-2B ceilometer is analyzed by using the Vaisala CL51 ceilometer, MPL, forward scatter visibility instrument, and aerosol optical depth (AOD) dataset from aerosol robotic network (AERONET). Spectral conversions of the ceilometer’s and lidar’s data are performed using the Ångström exponent estimated by AERONET measurements. A good agreement is found between two ceilometers and the MPL lidar in backscatter coefficient profiles inversion. The AODs agree well with the AERONET AODs during the observation period of small AODs. However, for the period of large AODs, the results are approximately 50%–60% of AERONET AODs. The limited range of extinction integration is the main cause of this problem. |
| format | Article |
| id | doaj-art-3e81fe05db1d45028b5554c816e9072b |
| institution | Kabale University |
| issn | 1687-9309 1687-9317 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Wiley |
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| series | Advances in Meteorology |
| spelling | doaj-art-3e81fe05db1d45028b5554c816e9072b2025-02-03T07:25:30ZengWileyAdvances in Meteorology1687-93091687-93172018-01-01201810.1155/2018/97381979738197Accuracy Analysis of the Aerosol Backscatter Coefficient Profiles Derived from the CYY-2B CeilometerLei Liu0Ting Zhang1Yi Wu2Qi Wang3Taichang Gao4College of Meteorology and Oceanography, National University of Defense Technology, Nanjing, Jiangsu 211101, ChinaHebei Provincial Meteorological Bureau, CMA, Shijiazhuang, Hebei 050000, ChinaNanjing Meteorological Bureau, CMA, Nanjing, Jiangsu 210019, ChinaCollege of Meteorology and Oceanography, National University of Defense Technology, Nanjing, Jiangsu 211101, ChinaCollege of Meteorology and Oceanography, National University of Defense Technology, Nanjing, Jiangsu 211101, ChinaCeilometers are originally designed for cloud base height monitoring. Since a few years, the number of ceilometers available worldwide is rapidly increasing, and these simple backscatter lidars are investigated to be used for aerosol research. This study presents an assessment of the potential of CYY-2B ceilometer for the quantitative retrieval of aerosol properties. The signal-to-noise ratio of the ceilometer is calculated, and the effective height of inversion is determined. It is shown that the effective height of the ceilometer for backscatter coefficient profile inversion is 3-4 km at night and about 1.5–2 km during the day, which is lower than that of the micropulse lidar (MPL) system. The accuracy of the backscatter coefficient profiles derived from the CYY-2B ceilometer is analyzed by using the Vaisala CL51 ceilometer, MPL, forward scatter visibility instrument, and aerosol optical depth (AOD) dataset from aerosol robotic network (AERONET). Spectral conversions of the ceilometer’s and lidar’s data are performed using the Ångström exponent estimated by AERONET measurements. A good agreement is found between two ceilometers and the MPL lidar in backscatter coefficient profiles inversion. The AODs agree well with the AERONET AODs during the observation period of small AODs. However, for the period of large AODs, the results are approximately 50%–60% of AERONET AODs. The limited range of extinction integration is the main cause of this problem.http://dx.doi.org/10.1155/2018/9738197 |
| spellingShingle | Lei Liu Ting Zhang Yi Wu Qi Wang Taichang Gao Accuracy Analysis of the Aerosol Backscatter Coefficient Profiles Derived from the CYY-2B Ceilometer Advances in Meteorology |
| title | Accuracy Analysis of the Aerosol Backscatter Coefficient Profiles Derived from the CYY-2B Ceilometer |
| title_full | Accuracy Analysis of the Aerosol Backscatter Coefficient Profiles Derived from the CYY-2B Ceilometer |
| title_fullStr | Accuracy Analysis of the Aerosol Backscatter Coefficient Profiles Derived from the CYY-2B Ceilometer |
| title_full_unstemmed | Accuracy Analysis of the Aerosol Backscatter Coefficient Profiles Derived from the CYY-2B Ceilometer |
| title_short | Accuracy Analysis of the Aerosol Backscatter Coefficient Profiles Derived from the CYY-2B Ceilometer |
| title_sort | accuracy analysis of the aerosol backscatter coefficient profiles derived from the cyy 2b ceilometer |
| url | http://dx.doi.org/10.1155/2018/9738197 |
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