Climate changes associated with high-amplitude Sq geomagnetic variations

• Autorzy: Rabeh T. , Carvalho F. , Khalil A. , El-Aal E.A. , El-Hemaly I.
• Języki publikacji: EN

Abstrakty

EN

When the solar irradiance propagates between the outer magnetospheric regions and the ionosphere, dynamic processes of the magnetosphere-ionosphere-thermosphere system are affected at the lower end of their paths by the interaction of radiation with the neutral troposphere. The main target of this work is to investigate the relationship between the diurnal magnetic field variations resulting from solar activities and the variation in the troposphere temperature. Meteorological and geomagnetic data acquired from different observatories located in Egypt, Portugal and Slovakia in a long-term and daily-term scales were analyzed. The long-term results show that there is a close relationship between the diurnal Sq magnetic field variations and the tropospheric temperature. The rate of temperature increase at mid-latitude areas is higher than at high-latitude. During the period of investigation, it is found that the troposphere temperature has increased by about 0.033 °C/year at Helwan, Egypt, 0.03 °C/year at Coimbra, Portugal, and 0.028 °C/year in Hurbanovo/Stará Lesná, Slovakia. The Sq geomagnetic variations depend on the intensity of the electric currents generated by the effect of solar radiation in the ionosphere.

Słowa kluczowe

EN

Earth’s climate; diurnal magnetic field variation; meteorological data; geomagnetic data; solar radiation

• Wydawca: Instytut Geofizyki PAN ; Springer
• Czasopismo: Acta Geophysica
• Rocznik: 2011
• Tom: Vol. 59, no. 5
• Strony: 1044--1056
• Opis fizyczny: Bibliogr. 26 poz.

Twórcy

autor

Rabeh T.

autor

Carvalho F.

autor

Khalil A.

autor

El-Aal E.A.

autor

El-Hemaly I.

• IGIDL, Lisbon University, Lisbon, Portugal,

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