Weather Abbreviations

A quickie on the abbreviations...

WZ- Wetterzentrale ( German website for viewing charts)

NAO- North atlantic oscillation

PNA- Pacific North american

SOI./ENSO- El-Nino Southern oscillation

WAA- Warm air advection

CAA- Cold air advection

528 DAM- is the line drawn on the maps that equated to the temperature ( MAX) that snow can be often observed at

GFS- Global forecasting sytem

METO- Met office model

UKMO- United kingdom Met office

ECM( Or ECMWF) European centre of medium range weather forecasts..

ASL- Above sea level-

PPN- Precipitation

Ensembles- 10 GFS model runs- Control run is the one seen on the models

SST'S sea surface temperatures

PM- Polar maritime air

MT- Maritime Tropical air

PC- Polar Continental air

LRF's - Long range forecasts

MRF's- meduim range forecasts

Trough- Upper level equivalent to a surface Low pressure

Ridge- Upper level equivalent to a surface High pressure

Blocking- The jet stream being moved AROUND CLOCKWISE a large area of high pressure.

Regards

Steve