52 citations · 104 across the 8 of their papers we have counts for
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physics.space-ph2014★ 16 cited
What causes geomagnetic activity during sunspot minimum
Boian Kirov, Simeon Asenovski, Katya Georgieva +1
The average geomagnetic activity during sunspot minimum has been continuously decreasing in the last four cycles. The geomagnetic activity is caused by both interplanetary disturba…
physics.space-ph2008
Does human activity widen the tropics?
Katya Georgieva, Boian Kirov
The progress article - Widening of the tropical belt in a changing climate - by Seidel et al. (2008) published in the first issue of Nature Geosciences, summarizes the results of s…
physics.space-ph2007★ 52 cited
Long-term variations in the correlation between NAO and solar activity: the importance of North-South solar activity asymmetry for atmospheric circulation
Katya Georgieva, Boian Kirov, Peter Tonev +2
General atmospheric circulation is the system of atmospheric motions over the Earth on the scale of the whole globe. Two main types of circulation have been identified: zonal - cha…