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    A Three-Step Method for Estimating the Mixing Height Using Ceilometer Data from the Helsinki Testbed

    Source: Journal of Applied Meteorology and Climatology:;2012:;volume( 051 ):;issue: 012::page 2172
    Author:
    Eresmaa, Noora
    ,
    Härkönen, Jari
    ,
    Joffre, Sylvain M.
    ,
    Schultz, David M.
    ,
    Karppinen, Ari
    ,
    Kukkonen, Jaakko
    DOI: 10.1175/JAMC-D-12-058.1
    Publisher: American Meteorological Society
    Abstract: new three-step idealized-profile method to estimate the mixing height from vertical profiles of ceilometer backscattering coefficient is developed to address the weaknesses found with such estimates that are based on the one-step idealized-profile method. This three-step idealized-profile method fits the backscattering coefficient profile of ceilometer measurements into an idealized scaled vertical profile of three error functions, thus having the potential to determine three aerosol layers (one for the surface layer, one for the mixing height, and one for the artificial layer caused by the weakened signal). This three-step idealized-profile method is tested with ceilometer and radiosounding data collected during the Helsinki Testbed campaign (2 January 2006?13 March 2007). Excluding cases with low aerosol concentration in the boundary layer, cases with clouds present, and cases with precipitation present, the resulting dataset consists of 97 simultaneous backscattering coefficient profiles and radiosoundings. The three-step method is compared with the one-step method and other commonly employed algorithms. A strong correlation (correlation coefficient r = 0.91) between the mixing heights as determined by the three-step method using ceilometer data and those determined from radiosoundings is an improvement over the same correlation using the one-step method (r = 0.28), as well as the other algorithms.
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      A Three-Step Method for Estimating the Mixing Height Using Ceilometer Data from the Helsinki Testbed

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4217104
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    • Journal of Applied Meteorology and Climatology

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    contributor authorEresmaa, Noora
    contributor authorHärkönen, Jari
    contributor authorJoffre, Sylvain M.
    contributor authorSchultz, David M.
    contributor authorKarppinen, Ari
    contributor authorKukkonen, Jaakko
    date accessioned2017-06-09T16:49:37Z
    date available2017-06-09T16:49:37Z
    date copyright2012/12/01
    date issued2012
    identifier issn1558-8424
    identifier otherams-74835.pdf
    identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4217104
    description abstractnew three-step idealized-profile method to estimate the mixing height from vertical profiles of ceilometer backscattering coefficient is developed to address the weaknesses found with such estimates that are based on the one-step idealized-profile method. This three-step idealized-profile method fits the backscattering coefficient profile of ceilometer measurements into an idealized scaled vertical profile of three error functions, thus having the potential to determine three aerosol layers (one for the surface layer, one for the mixing height, and one for the artificial layer caused by the weakened signal). This three-step idealized-profile method is tested with ceilometer and radiosounding data collected during the Helsinki Testbed campaign (2 January 2006?13 March 2007). Excluding cases with low aerosol concentration in the boundary layer, cases with clouds present, and cases with precipitation present, the resulting dataset consists of 97 simultaneous backscattering coefficient profiles and radiosoundings. The three-step method is compared with the one-step method and other commonly employed algorithms. A strong correlation (correlation coefficient r = 0.91) between the mixing heights as determined by the three-step method using ceilometer data and those determined from radiosoundings is an improvement over the same correlation using the one-step method (r = 0.28), as well as the other algorithms.
    publisherAmerican Meteorological Society
    titleA Three-Step Method for Estimating the Mixing Height Using Ceilometer Data from the Helsinki Testbed
    typeJournal Paper
    journal volume51
    journal issue12
    journal titleJournal of Applied Meteorology and Climatology
    identifier doi10.1175/JAMC-D-12-058.1
    journal fristpage2172
    journal lastpage2187
    treeJournal of Applied Meteorology and Climatology:;2012:;volume( 051 ):;issue: 012
    contenttypeFulltext
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    DSpace software copyright © 2002-2015  DuraSpace
    نرم افزار کتابخانه دیجیتال "دی اسپیس" فارسی شده توسط یابش برای کتابخانه های ایرانی | تماس با یابش
    yabeshDSpacePersian