A bispectral technique was employed to determine the cirrus cloud-top temperature. Data were gathered from aircraft equipped with the ARIES radiometer, which on sixteen flights provided IR readings at 6.5 and 11.5 microns of cirrus tops. The flights were made on a NASA Convair to a maximum ceiling of 12,500 m. The brightness temperatures above the cirrus were found to be consistently colder, by up to 40 K, than the 11.5 microns window channel, and good spatial correlations were displayed over whole clouds. Effective emissivities are calculated for both channels and applied to Meteosat digital imagery. The subsequent derived temperatures were significantly colder than black-body temperatures, which is explained by taking into account the absorption of emitted radiation by water vapor.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen


    Exportieren, teilen und zitieren



    Titel :

    Determination of semi-transparent cirrus cloud temperature from infrared radiances - Application to Meteosat


    Beteiligte:
    Szejwach, G. (Autor:in)


    Erscheinungsdatum :

    1982-03-01


    Medientyp :

    Sonstige


    Format :

    Keine Angabe


    Sprache :

    Englisch






    Characterization and validation of cloud - cleared radiances

    Fishbein, Evan F. / Pagano, Thomas S. / Aumann, Hartmut H. et al. | NTRS | 2004


    Meteosat

    Kendal, B. / McDermott, M. | Tema Archiv | 1985