Solar Extreme Events of 2003:
Fundamental Science and Applied Aspects

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The Storms of October-November 2003 as Recorded by Ground-Based Observations
Shirochkov A.V., Makarova L.N., Sokolov S.N.,

Role of the traditional and specialized ground-based observations in diagnostic and studies of severe Space Weather disturbances diminished continuously durind the last decades. If the storms of August 1972 were covered in literature by a great number of various ground-based measurements the intense storm of May 1992 was described almost completely by satellite observations only. Nowadays the situation has not been improved. At the same time the data of geomagnetic and ionospheric observations could make a significant contribution to understanding physical processes of the birth, development and decaying of the global Space Weather storms such as the ones of October-November 2003. The data of meridianal chaines of riometer with narrow latitudinal spacing are of special value. In this paper spatial/temporal distributions of ionospheric signatures of the October-November 2003 at different stages of their development are analysed. The data of geomagnetic and riometer measurements at the Russian and foreign stations in the Arctic and Antarctic are used. Special attention is given to data of the Canadian riometer chain (CANOPUS), which covers range of invariant latitudes from 79 N to 60 N degrees with fine latitudinal resolution. Various features of the storms derived from these observations are discussed.

Skobeltsyn Institute of Nuclear Physics, Moscow State University, 2004