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    Radiosonde Humidity Retrieval by Simultaneous Radiation Measurements

    Source: Journal of Applied Meteorology:;1972:;volume( 011 ):;issue: 001::page 130
    Author:
    Kuhn, P. M.
    ,
    Stearns, L. P.
    DOI: 10.1175/1520-0450(1972)011<0130:RHRBSR>2.0.CO;2
    Publisher: American Meteorological Society
    Abstract: A radiometric method for the retrieval of moisture data at altitudes above the radiosonde hygristor cutoff region or in situations where a malfunction of the hygristor occurs is described. The method was applied to BOMEX radiation soundings. Regardless of the exact moisture profile, the method is designed to radiometrically infer the average decrease of moisture through the entire atmospheric column through a solution of the radiative transfer equation. This enables recovery of the total mass of atmospheric water vapor. In at least 25% of all BOMEX radiometersonde ascents, humidity retrieval did produce a more realistic moisture profile and total mass of precipitable water vapor. In these cases, the radiosonde hygristor humidity deficiencies averaged from ?45% at 800 mb to ?30% at 600 mb. For such pressure levels, the optical mass of water vapor retrieved for the soundings discussed averaged 1.68 gm cm?2. This represents 56% of the hygristor-measured optical mass. Above 400 mb the optical mass recovered averaged 0.7 gm cm?2 for all BOMEX radiometer soundings. It is suggested that a simple radiometer could be used to improve moisture measurements for soundings requiring the best possible water vapor data.
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      Radiosonde Humidity Retrieval by Simultaneous Radiation Measurements

    URI
    http://yetl.yabesh.ir/yetl1/handle/yetl/4226190
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    contributor authorKuhn, P. M.
    contributor authorStearns, L. P.
    date accessioned2017-06-09T17:18:52Z
    date available2017-06-09T17:18:52Z
    date copyright1972/02/01
    date issued1972
    identifier issn0021-8952
    identifier otherams-8301.pdf
    identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4226190
    description abstractA radiometric method for the retrieval of moisture data at altitudes above the radiosonde hygristor cutoff region or in situations where a malfunction of the hygristor occurs is described. The method was applied to BOMEX radiation soundings. Regardless of the exact moisture profile, the method is designed to radiometrically infer the average decrease of moisture through the entire atmospheric column through a solution of the radiative transfer equation. This enables recovery of the total mass of atmospheric water vapor. In at least 25% of all BOMEX radiometersonde ascents, humidity retrieval did produce a more realistic moisture profile and total mass of precipitable water vapor. In these cases, the radiosonde hygristor humidity deficiencies averaged from ?45% at 800 mb to ?30% at 600 mb. For such pressure levels, the optical mass of water vapor retrieved for the soundings discussed averaged 1.68 gm cm?2. This represents 56% of the hygristor-measured optical mass. Above 400 mb the optical mass recovered averaged 0.7 gm cm?2 for all BOMEX radiometer soundings. It is suggested that a simple radiometer could be used to improve moisture measurements for soundings requiring the best possible water vapor data.
    publisherAmerican Meteorological Society
    titleRadiosonde Humidity Retrieval by Simultaneous Radiation Measurements
    typeJournal Paper
    journal volume11
    journal issue1
    journal titleJournal of Applied Meteorology
    identifier doi10.1175/1520-0450(1972)011<0130:RHRBSR>2.0.CO;2
    journal fristpage130
    journal lastpage135
    treeJournal of Applied Meteorology:;1972:;volume( 011 ):;issue: 001
    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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