Arctic: Regional Reanalyses

Submitted by on Fri, 08/10/2018 - 15:29

Arctic System Reanalysis (ASR): 2000-2012

The Arctic System Reanalysis (ASR), a high-resolution regional assimilation of model output, observations, and satellite data across the mid- and high latitudes of the Northern Hemisphere for the period 2000 – 2012 has been performed at 30 km (ASRv1) and 15 km (ASRv2) horizontal resolution using the polar version of the Weather Research and Forecasting (WRF) model and the WRF Data Assimilation (WRFDA) System.

Source: Polar Meteorology Group, Byrd Polar & Climate Research Center, The Ohio State University

Time Range: 2000-2012

Assimilation: WRFDA-3DVAR

Dataset Output Times and Time Averaging: 3-hourly for surface and upper air fields, Monthly means of selected variables

ASRv1 – 30 km
Model Resolution: 30 km, 71 sigma levels
Dataset location:
ASRv2 30 km is expected early 2017

ASRv2 – 15 km (Currently updating through 2016 - available end of 2017)
Model Resolution: 15 km, 71 sigma levels
Dataset location:

Data Access: Polar Meteorology Group

References | ClimateDataGuide


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