AbstractThe determination of the area of sunspots is important from several points of view, e.g, in study of the evolution of sunspots and their effect on solar irradiance. Automated sunspot area measurements are now replacing time-consuming and subjective hand-made measurements. Also, terrestrial solar observations have been supplemented by observations from space. The resolution of the ground observations is limited by the seeing, while space-borne observations are limited by the size of the CCD array. The use of different data sources, as well as of different region identification algorithms, causes discrepancies in reported sunspot areas. An important task is to determine to what extent these differences can be attributed to different analysis methods and to what extent to different data. It is also important to establish the required spatial resolution of space-based images.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Study of differences between sunspot area data determined from ground-based and space-borne observations


    Contributors:
    Győri, L (author) / Baranyi, T (author) / Turmon, M (author) / Pap, J.M (author)

    Published in:

    Advances in Space Research ; 34 , 2 ; 269-273


    Publication date :

    2003-02-02


    Size :

    5 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English





    Study of Differences Between Sunspot Area Data Determined from Ground-Based and Space-Borne Observations

    Gyori, L. / Baranyi, T. / Turmon, M. et al. | British Library Conference Proceedings | 2004


    Ground-based and space-borne lightning observations during CHUVA

    Höller, Hartmut / Betz, Hans-Dieter / Morales, Carlos et al. | German Aerospace Center (DLR) | 2013

    Free access

    High-resolution sunspot observations

    Zirin, H. / Wang, H. | NTRS | 1991


    High-resolution sunspot observations

    Zirin, H. / Wang, H. | Elsevier | 1991