52 citations · 114 across the 10 of their papers we have counts for
3 papers · 1 filter
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…
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…
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…