Percentage Change in Precipitation (Spring Average)
All sub-regions experience a reduction in spring precipitation ranging from less than -0.1% in east Northumberland to around -3.2% in west Tees Valley.
Percentage Change in Precipitation (Summer Average)
All sub-regions experience a decrease in summer average precipitation of more than 15%.
The most significant changes are found in Tyne & Wear, east County Durham and west Tees Valley, where the decrease is over 22%. The areas of high ground in the west of Northumberland and County Durham experience a smaller reduction in precipitation than the lower lying eastern areas.
Percentage Change in Precipitation (Autumn Average)
All sub-regions experience a decrease in autumn precipitation ranging from around -2.0% in north-west Northumberland, to around -6.0% in western Tees Valley. The change in precipitation is more significant in the coastal areas (average reduction of around 4.6%), than the upland areas (average reduction of around 3.7%).
Percentage Change in Precipitation (Winter Average)
All sub-regions experience an increase in winter average precipitation of over 9%.
The largest increases occur in the coastal regions, in particular east Northumberland which will experience around a 13.6% increase in winter average precipitation. The change in precipitation increases moving northwards through the study area.
