500hPa geopotential height, 1979-2009

Annual mean and variability

Annual mean

Annual mean 500hPa geopotential height, 1979-2009

Annual variability

Variability of annual mean 500hPa geopotential height, 1979-2009

Seasonal means

December - February

Mean 500hPa geopotential height for December to February, 1979-2009

March - May

Mean 500hPa geopotential height for March to May, 1979-2009

June - August

Mean 500hPa geopotential height for June to August, 1979-2009

September - November

Mean 500hPa geopotential height for September to November, 1979-2009

Monthly means

January

Mean 500hPa geopotential height for January, 1979-2009

February

Mean 500hPa geopotential height for February, 1979-2009

March

Mean 500hPa geopotential height for March, 1979-2009

April

Mean 500hPa geopotential height for April, 1979-2009

May

Mean 500hPa geopotential height for May, 1979-2009

June

Mean 500hPa geopotential height for June, 1979-2009

July

Mean 500hPa geopotential height for July, 1979-2009

August

Mean 500hPa geopotential height for August, 1979-2009

September

Mean 500hPa geopotential height for September, 1979-2009

October

Mean 500hPa geopotential height for October, 1979-2009

November

Mean 500hPa geopotential height for November, 1979-2009

December

Mean 500hPa geopotential height for December, 1979-2009