![]() This pattern will support normal to below normal temperatures across Northern and Eastern Europe with normal to above normal temperatures across Southern and Western Europe including the United Kingdom (UK) this week and then normal to below normal temperatures across Northern and Western Europe including the UK with normal to above normal temperatures across Southern and Eastern Europe next week. Including Scandinavia, forcing troughing/negative geopotential height anomalies across Europe especially Western Europe. Over the next two weeks, the general predicted pattern across Europe is ridging/positive geopotential height anomalies across the northern North Atlantic.The North Atlantic Oscillation (NAO) is currently negative with mostly positive pressure/geopotential height anomalies across Greenland and the NAO is predicted to remain negative to neutral the next two weeks as pressure/geopotential height anomalies remain mostly positive to mixed across Greenland. The Arctic Oscillation (AO) is currently negative and is predicted to remain very close to neutral the next two weeks as pressure/geopotential height anomalies across the Arctic are currently mostly positive and are predicted to remain mixed over the next two weeks.The AO/PV blog is partially supported by NSF grant AGS: 1657748. Subscribe to our email list or follow me on Twitter for notification of updates. Also, there is renewed emphasis on ice and snow boundary conditions and their influence on hemispheric weather. Snow accumulation forecasts replace precipitation forecasts. During the winter schedule the blog is updated once every week. Also, there will be less emphasis on ice and snow boundary conditions and their influence on hemispheric weather. Snow accumulation forecasts will be replaced by precipitation forecasts. ![]() With the start of spring we transition to a spring/summer schedule, which is once every two weeks. This analysis is intended to provide researchers and practitioners real-time insights on one of North America’s and Europe’s leading drivers for extreme and persistent temperature patterns. Judah Cohen from Atmospheric and Environmental Research (AER) embarked on an experimental process of regular research, review, and analysis of the Arctic Oscillation ( AO) and Polar Vortex (PV).
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