Trends in Summer Season Climate for Eastern Europe and Southern Russia in the Early 21st Century

Table 1

The large-scale flow regime characterization as related to circulation character over the Central Chernozem Region.

Surface pressure field description	Large-scale flow type	Air mass movement in the East European sector
Winter
(I) Anticyclonic
(A) Arctic anticyclones	4а, 4b, 8bw, 10а, 10b	Longitudinal north
(B) Ridging-Azores anticyclone	5а, 5b, 8cw, 11а, 11c, 11d, 12d	Latitudinal Western
(C) Siberian anticyclone-	1а, 5b, 13w	Stationary flow/blocking
(II) Cyclonic
(A) Western cyclones	4c, 11b	Latitudinal western
(B) Southern cyclones	1b, 3, 5d, 6, 7aw, 7bw, 8а, 8dw, 9b, 12а, 12bw, 12cw	Longitudinal southern
Summer
(I) Anticyclonic
(A) Arctic anticyclones	4b, 8ds, 10а, 10b	Longitudinal north
(B) Ridging-Azores anticyclone	2b, 6, 7as	Latitudinal western
(C) Siberian anticyclone	9а, 2а, 7bs, 13s	Stationary/blocking
(II) Cyclonic
(A) Southwestern cyclones	2c, 3, 4а, 4c, 8а, 8bs, 8cs, 9b, 12bs, 12cs	Latitudinal western and longitudinal southern