Relative Frequency of Grosswetterlagen Types

Table 1 shows the number of examples of each Grosswetterlagen circulation type represented in the ACCORD datasets. This shows that all circulation types are adequately represented, although some circulation types occurr far more frequently than others.

Table 1: Number of examples of each Grosswetterlagen type in the ACCORD project dataset.

Grosswetterlagen	Description	Examples
Wa	West anticyclonic	681
Wz	West cyclonic	1767
Ws	Southern West	283
Ww	Angleformed West	213
SWa	Southwest anticyclonic	325
SWz	Southwest cyclonic	366
NWa	Northwest anticyclonic	265
NWz	Northwest cyclonic	479
HM	Central European high	602
BM	Central European ridge	1133
TM	Central European low	265
Na	North anticyclonic	92
Nz	North cyclonic	312
HNa	North, Iceland high, anticyclonic	225
HNz	North, Iceland high, cyclonic	201
HB	British Isles high	372
TrM	Central European trough	488
NEa	North-East anticyclonic	153
NEz	North-East cyclonic	175
HFa	Fennoscandian high anticyclonic	367
HFz	Fennoscandian high cyclonic	207
HNFa	Norwegian Sea - Fennoscandian high anticyclonic	167
HNFz	Norwegian Sea - Fennoscandian high cyclonic	184
SEa	Southeast anticyclonic	232
SEz	Southeast cyclonic	145
Sa	South anticyclonic	197
Sz	South cyclonic	78
TB	British Isles low	267
TrW	Western European trough	560
U	Unclassifiable	157