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    A CCD Spectroradiometer for Ultraviolet Actinic Radiation Measurements

    Source: Journal of Atmospheric and Oceanic Technology:;2007:;volume( 024 ):;issue: 003::page 449
    Author:
    Jäkel, Evelyn
    ,
    Wendisch, Manfred
    ,
    Blumthaler, Mario
    ,
    Schmitt, Rainer
    ,
    Webb, Ann R.
    DOI: 10.1175/JTECH1979.1
    Publisher: American Meteorological Society
    Abstract: A new spectroradiometer for spectral measurements of ultraviolet (UV) atmospheric radiation (290?400 nm) using a charge coupled device (CCD) as a detector is introduced. The instrument development is motivated by the need for measurements with (a) high accuracy in the UV-B spectral range (290?315 nm) for photochemistry applications and (b) high temporal resolution in quickly changing atmospheric conditions such as partial cloud cover. The new CCD instrument is mainly intended for airborne use. It allows fast data collection (<300 ms time resolution for each spectrum) with improved sensitivity in the UV spectral range. The instrumental setup and its characterization in terms of stray light, dark current, noise, and detection limits are described and compared to a spectroradiometer with a photodiode array (PDA) detector. The new CCD spectroradiometer has a one order of magnitude greater sensitivity than the PDA-based spectroradiometer. However, the stray light of the CCD instrument is wavelength dependent, which requires a more complicated data evaluation procedure than the PDA instrument. Comparison with other UV spectroradiometers (a PDA spectroradiometer and two ground-based double monochromators) shows the advantages of the CCD system for UV-B measurements of actinic flux densities and photolysis frequencies of ozone and nitrogen dioxide, and the improved performance compared to PDA spectroradiometers.
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      A CCD Spectroradiometer for Ultraviolet Actinic Radiation Measurements

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4227691
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    contributor authorJäkel, Evelyn
    contributor authorWendisch, Manfred
    contributor authorBlumthaler, Mario
    contributor authorSchmitt, Rainer
    contributor authorWebb, Ann R.
    date accessioned2017-06-09T17:23:26Z
    date available2017-06-09T17:23:26Z
    date copyright2007/03/01
    date issued2007
    identifier issn0739-0572
    identifier otherams-84363.pdf
    identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4227691
    description abstractA new spectroradiometer for spectral measurements of ultraviolet (UV) atmospheric radiation (290?400 nm) using a charge coupled device (CCD) as a detector is introduced. The instrument development is motivated by the need for measurements with (a) high accuracy in the UV-B spectral range (290?315 nm) for photochemistry applications and (b) high temporal resolution in quickly changing atmospheric conditions such as partial cloud cover. The new CCD instrument is mainly intended for airborne use. It allows fast data collection (<300 ms time resolution for each spectrum) with improved sensitivity in the UV spectral range. The instrumental setup and its characterization in terms of stray light, dark current, noise, and detection limits are described and compared to a spectroradiometer with a photodiode array (PDA) detector. The new CCD spectroradiometer has a one order of magnitude greater sensitivity than the PDA-based spectroradiometer. However, the stray light of the CCD instrument is wavelength dependent, which requires a more complicated data evaluation procedure than the PDA instrument. Comparison with other UV spectroradiometers (a PDA spectroradiometer and two ground-based double monochromators) shows the advantages of the CCD system for UV-B measurements of actinic flux densities and photolysis frequencies of ozone and nitrogen dioxide, and the improved performance compared to PDA spectroradiometers.
    publisherAmerican Meteorological Society
    titleA CCD Spectroradiometer for Ultraviolet Actinic Radiation Measurements
    typeJournal Paper
    journal volume24
    journal issue3
    journal titleJournal of Atmospheric and Oceanic Technology
    identifier doi10.1175/JTECH1979.1
    journal fristpage449
    journal lastpage462
    treeJournal of Atmospheric and Oceanic Technology:;2007:;volume( 024 ):;issue: 003
    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
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