Quarterly Bulletin of Solar Activity

• OUTLINE

• Back numbers (gif formatted files)

  • Part I - Sunspot Relative Numbers and Sunspot Areas
    The tables of sunspot relative numbers and sunspot areas are given under the care of Sunspot Index Data Center, Bruxelles. About 90 observatories including those listed below contribute to the collection of the data.
    Altamira, Americana, Ankara, Athens, Attikis, Auckland, Australian Obs., Berlin, Beyazit, Bodenteich, Boom, Boulder, Bruxelles-Uccle, Bucharest, Buenos-Aires, Campinas (Capri Obs.), Caracas, Catania, Cochabamba, Culgoora, Dinant, Dover, Grimebergen, Holloman, Helwan, Invercargill, Inzernhagen, Jeddah, Kandilli, Kanzelhhe, Kawaguchi, Kavlinge, Kayeme, Kiev, Kislovodsk, Langemargk, Learmonth, Locarno, Lunping, Agr. Madrid, Marcq en Baroeul, Mie, Mons, Mosta, Museros, Naxxar, Nijmegen, Oostende, Potsdam, Palea Pentli, Palehua, Prades, Pulligny, Pyong Yang, Quezon-City, Ramey, Roma, Ronse-Renaix, Roguetas-Tortosa, San Jose, San Miguel, Santiago, Skalnate-Pleso, Suwa, Taipei (Obs.), Taipei (Weather-Bureau), Tangjungsari, Tashkent, Tokyo (National Science Meuseum), Tokyo (Mitaka), Trieste, Urawa, Valencia, Vedrin Vivy, and Wittelsheim.
    1977, 1978, 1979
    1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989
    1990, 1991, 1992, 1993, 1994, 1995

    • Sunspot Index Data Center (SIDC) (Observatoire Royal de Belgique)

    Part II - Synoptic Charts of Solar Magnetic Filelds

    These synoptic charts of solar magnetic fields are constructed from the digital data of the daily solar magnetograms obtained at the 150-foot tower telescope at the Mount Wilson Observatory, Pasadena, U.S.A.. Each chart covers one solar rotation and is printed in two colors: black magnetic contour lines represent positive fields and red contour lines represent negative fields.

    1977, 1978, 1979

    1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989

    1990, 1991, 1992, 1993, 1994, 1995

    Part III - Eruptions Chromospheriques Brillantes

    The flare observations are collected and compiled by Paris Observatory at Meudon. The tabulated data give the time, coordinates, area, importance and additional information on solar flares, and the following observatories are cooperating:
    Abastumani, Athens, Beijing, Berne, Big Bear, Bucharest, Catania, Culgoora, Haute-Provence, Holloman, Istanbul, Kandilli, Kanzelh\"ohe, Kharkov, Learmonth, Lvov, Manila, Mitaka, Monte-Mario, Palehua, Purple Mountain, Ramey, Tachkent, Voroshilov (Ussurisk), Wendelstein, and Yunnan.

    1977, 1978, 1979

    1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989

    Part IV - Intensities of The Solar Corona

    The intensities of the coronal lines of 5303 A; and 6374 A; around the solar limb at intervals of 5 d egrees are obtained from the following observatories: Kislovodsk, Lomnicky Stit, and Norikura. Isophotes of the 5303 A; coronal emission line are prepared by the Kislovodsk Station of the Pulkovo Observatory.

    1977, 1978, 1979

    1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989

    1990, 1991, 1992, 1993, 1994, 1995

    Part V - Solar Radio Emission

    The data on radio emission are compiled by Nobeyama Solar Radio Observatory, National Astronomical Observatory, Japan. This part includes daily values of solar flux density at about 30 different frequencies ranging from 100 MHz to 15 GHz, and tables of distinctive events. Charts of radio active regions on the sun prepared by Nancay and Nobeyama observatories are also supplemented. Following observatories are cooperating for radio observations:
    Abastumani, Athens, Beijing, Bleien, Bordeaux, Boulder, Crimea, Culgoora, Dominion, Dwingeloo, Fort Davis, Gorky, Harestua, Havana, Hiraiso, Huancayo, Irkutsk, IZMIRAN-Moscow, Kiev, Kislvodsk, Krakow, Manila, McMath Hulbert, Nancay, Nobeyama, Ondrejov, Ottawa, Pennsylvania State University, Potsdam, San Paulo, Sagamore Hill, Sydney, Torun, Trieste, Toyokawa, Voroshilov, Yunnan, and Wissenau.

    1977, 1978, 1979

    1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988