Big weather system for mid atlantic4/2/2023 This pattern favors the next two weeks normal to below normal temperatures across Northern Europe including the United Kingdom (UK) with normal to above normal temperatures across Southern Europe. The next two weeks predicted ridging/positive geopotential height anomalies centered near Greenland will favor troughing/negative geopotential height anomalies across Europe with ridging/positive geopotential height anomalies across the Mediterranean.The North Atlantic Oscillation (NAO) is currently negative and is predicted to remain negative but slowly trend towards neutral the next two weeks as pressure/geopotential height anomalies are currently positive and are predicted to remain positive across Greenland the next two weeks. The Arctic Oscillation (AO) is currently strongly negative and is predicted to remain negative but slowly trend towards neutral the next two weeks as pressure/geopotential height anomalies across the Arctic are currently strongly positive and are predicted to remain mostly positive 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 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. Also, there is renewed emphasis on ice and snow boundary conditions and their influence on hemispheric weather. With the start of spring we transition to a spring/summer schedule, which is once every two weeks. Snow accumulation forecasts replace precipitation forecasts. 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.ĭuring the winter schedule the blog is updated once every week. 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). At present we plan to make available in comma-separated values the timeseries of the Polar Cap Height and the timeseries of the Wave Activity Flux (vertical component), though we would appreciate to hear your suggestions for additional data of interest to you all.ĭr. For those who would like an early look on Mondays, we will be offering at a nominal price (US $50) a PDF version of the upcoming blog, and we will be rolling out access to the datasets used in the production of this blog. MaDear AO/PV blog readers: We have shifted the public release of the Arctic Oscillation/Polar Vortex blog to Wednesday through the winter season.
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