Title: WACCMX+DART 2009-2010 Hindcasts Experiments Description: The dataset consists of the median root mean square error and bias of a set of hindcast experiments performed using the Whole Atmosphere Community Climate Model eXtended (WACCMX) with data assimilation from the Data Assimilation Research Testbed (DART). The WACCMX DART hindcast experiments were initialized on the 1st and 15th of every month in 2009 and 2010. The root mean square error and bias are calculated with respect to the Aura MLS satellite observations and WACCMX DART analysis fields. The dataset is in support of a publication submitted to the AGU journal Space Weather. Metadata URL: https://gdex.ucar.edu/dataset/id/842f9632-19b0-4b93-a73c-52745e5bd2b3.html