Examining the origin of European weather systems during changes in the NAO, ENSO, and the Solar cycle

A repository relating to a study of the how the origin of European synoptic types varies with extremes of ENSO, the NAO, stratospheric aerosols, and the Solar cycle. 

They study is published in the Royal Society Open Science journal, DOI: 10.1098/rsos.150320. http://rsos.royalsocietypublishing.org/content/3/2/150320#sec-13

Data Sources 

Hess Brezowsky Großwetterlagen weather types, a subjective classification of synoptic-scale weather using meteorological sites across Germany, originally from Hess, Paul and Brezowsky, Helmuth, Großwetterlagen Europas 1881-1992. 4., vollständig neu bearbeitete Auflage, Ber. Dt. Wetterd. 113, 1993, 5.

Sunspot data from the World Data Centre SILSO (http://sidc.be/silso/home), Royal Observatory of Belgium, Brussels.

Stratospheric aerosol data from NASA (http://data.giss.nasa.gov/modelforce/strataer).

MEI (ENSO) data from NOAA (http://www.esrl.noaa.gov/psd/enso/mei.ext/), credit Dr Klaus Wolter.

NAO data from CRU (http://www.cru.uea.ac.uk/timo/datapages/naoi.htm/).