Comparison of aerosol lidar retrieval methods for boundary layer height detection using ceilometer aerosol backscatter data
Three algorithms for estimating the boundary layer heights are assessed: an aerosol gradient method, a cluster analysis method, and a Haar wavelet method. Over 40 daytime clear-sky radiosonde profiles are used to compare aerosol backscatter boundary layer heights retrieved by a Vaisala CL31 ceilomet...
| Main Authors: | , , , , , |
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| Format: | Journal article |
| Published: |
Copernicus Publications
2017
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| _version_ | 1797075590801522688 |
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| author | Caicedo, V Rappenglück, B Lefer, B Morris, G Toledo, D Delgado, R |
| author_facet | Caicedo, V Rappenglück, B Lefer, B Morris, G Toledo, D Delgado, R |
| author_sort | Caicedo, V |
| collection | OXFORD |
| description | Three algorithms for estimating the boundary layer heights are assessed: an aerosol gradient method, a cluster analysis method, and a Haar wavelet method. Over 40 daytime clear-sky radiosonde profiles are used to compare aerosol backscatter boundary layer heights retrieved by a Vaisala CL31 ceilometer. Overall good agreement between radiosonde- and aerosol-derived boundary layer heights was found for all methods. The cluster method was found to be particularly sensitive to noise in ceilometer signals and lofted aerosol layers (48.8% of comparisons), while the gradient method showed limitations in low-aerosol-backscatter conditions. The Haar wavelet method was demonstrated to be the most robust, only showing limitations in 22.5% of all observations. Occasional differences between thermodynamically and aerosol-derived boundary layer heights were observed. |
| first_indexed | 2024-03-06T23:52:28Z |
| format | Journal article |
| id | oxford-uuid:73137bdd-39fc-45d7-89be-8b89d7faeca6 |
| institution | University of Oxford |
| last_indexed | 2024-03-06T23:52:28Z |
| publishDate | 2017 |
| publisher | Copernicus Publications |
| record_format | dspace |
| spelling | oxford-uuid:73137bdd-39fc-45d7-89be-8b89d7faeca62022-03-26T19:54:15ZComparison of aerosol lidar retrieval methods for boundary layer height detection using ceilometer aerosol backscatter dataJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:73137bdd-39fc-45d7-89be-8b89d7faeca6Symplectic Elements at OxfordCopernicus Publications2017Caicedo, VRappenglück, BLefer, BMorris, GToledo, DDelgado, RThree algorithms for estimating the boundary layer heights are assessed: an aerosol gradient method, a cluster analysis method, and a Haar wavelet method. Over 40 daytime clear-sky radiosonde profiles are used to compare aerosol backscatter boundary layer heights retrieved by a Vaisala CL31 ceilometer. Overall good agreement between radiosonde- and aerosol-derived boundary layer heights was found for all methods. The cluster method was found to be particularly sensitive to noise in ceilometer signals and lofted aerosol layers (48.8% of comparisons), while the gradient method showed limitations in low-aerosol-backscatter conditions. The Haar wavelet method was demonstrated to be the most robust, only showing limitations in 22.5% of all observations. Occasional differences between thermodynamically and aerosol-derived boundary layer heights were observed. |
| spellingShingle | Caicedo, V Rappenglück, B Lefer, B Morris, G Toledo, D Delgado, R Comparison of aerosol lidar retrieval methods for boundary layer height detection using ceilometer aerosol backscatter data |
| title | Comparison of aerosol lidar retrieval methods for boundary layer height detection using ceilometer aerosol backscatter data |
| title_full | Comparison of aerosol lidar retrieval methods for boundary layer height detection using ceilometer aerosol backscatter data |
| title_fullStr | Comparison of aerosol lidar retrieval methods for boundary layer height detection using ceilometer aerosol backscatter data |
| title_full_unstemmed | Comparison of aerosol lidar retrieval methods for boundary layer height detection using ceilometer aerosol backscatter data |
| title_short | Comparison of aerosol lidar retrieval methods for boundary layer height detection using ceilometer aerosol backscatter data |
| title_sort | comparison of aerosol lidar retrieval methods for boundary layer height detection using ceilometer aerosol backscatter data |
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