Mixing height determination by ceilometer
A novel method for estimating the mixing height based on ceilometer measurements is described and tested against commonly used methods for determining mixing height. In this method an idealised backscatter profile is fitted to the observed backscatter profile. The mixing height is one of the idealis...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2006-01-01
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| Series: | Atmospheric Chemistry and Physics |
| Online Access: | http://www.atmos-chem-phys.net/6/1485/2006/acp-6-1485-2006.pdf |
| _version_ | 1819173286194446336 |
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| author | N. Eresmaa A. Karppinen S. M. Joffre J. Räsänen H. Talvitie |
| author_facet | N. Eresmaa A. Karppinen S. M. Joffre J. Räsänen H. Talvitie |
| author_sort | N. Eresmaa |
| collection | DOAJ |
| description | A novel method for estimating the mixing height based on ceilometer measurements is described and tested against commonly used methods for determining mixing height. In this method an idealised backscatter profile is fitted to the observed backscatter profile. The mixing height is one of the idealised backscatter profile parameters. <P style='line-height: 20px;'> An extensive amount of ceilometer data and vertical soundings data from the Helsinki area in 2002 is utilized to test the applicability of the ceilometer for mixing height determination. The results, including 71 convective and 38 stable cases, show that in clear sky conditions the mixing heights determined from ceilometer based aerosol profiles and BL-height estimates based on sounding data are in a good agreement. Rejected outlier cases corresponded to very low aerosol concentrations in the mixed layer leading to a very weak aerosol backscatter signal in the lowest layer. |
| first_indexed | 2024-12-22T20:20:40Z |
| format | Article |
| id | doaj.art-8cb669ce84354ca49077bd86aa55ba82 |
| institution | Directory Open Access Journal |
| issn | 1680-7316 1680-7324 |
| language | English |
| last_indexed | 2024-12-22T20:20:40Z |
| publishDate | 2006-01-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Atmospheric Chemistry and Physics |
| spelling | doaj.art-8cb669ce84354ca49077bd86aa55ba822022-12-21T18:13:51ZengCopernicus PublicationsAtmospheric Chemistry and Physics1680-73161680-73242006-01-016614851493Mixing height determination by ceilometerN. EresmaaA. KarppinenS. M. JoffreJ. RäsänenH. TalvitieA novel method for estimating the mixing height based on ceilometer measurements is described and tested against commonly used methods for determining mixing height. In this method an idealised backscatter profile is fitted to the observed backscatter profile. The mixing height is one of the idealised backscatter profile parameters. <P style='line-height: 20px;'> An extensive amount of ceilometer data and vertical soundings data from the Helsinki area in 2002 is utilized to test the applicability of the ceilometer for mixing height determination. The results, including 71 convective and 38 stable cases, show that in clear sky conditions the mixing heights determined from ceilometer based aerosol profiles and BL-height estimates based on sounding data are in a good agreement. Rejected outlier cases corresponded to very low aerosol concentrations in the mixed layer leading to a very weak aerosol backscatter signal in the lowest layer.http://www.atmos-chem-phys.net/6/1485/2006/acp-6-1485-2006.pdf |
| spellingShingle | N. Eresmaa A. Karppinen S. M. Joffre J. Räsänen H. Talvitie Mixing height determination by ceilometer Atmospheric Chemistry and Physics |
| title | Mixing height determination by ceilometer |
| title_full | Mixing height determination by ceilometer |
| title_fullStr | Mixing height determination by ceilometer |
| title_full_unstemmed | Mixing height determination by ceilometer |
| title_short | Mixing height determination by ceilometer |
| title_sort | mixing height determination by ceilometer |
| url | http://www.atmos-chem-phys.net/6/1485/2006/acp-6-1485-2006.pdf |
| work_keys_str_mv | AT neresmaa mixingheightdeterminationbyceilometer AT akarppinen mixingheightdeterminationbyceilometer AT smjoffre mixingheightdeterminationbyceilometer AT jrasanen mixingheightdeterminationbyceilometer AT htalvitie mixingheightdeterminationbyceilometer |