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In this study, MODIS AOD and AirNow PM measurements are assimilated into the CMAQ model using an optimal interpolation (OI) method. Over a 30-day test period in July 2011, three assimilation configurations were used in which MODIS AOD and AirNow PM measurements were first assimilated separately before being assimilated simultaneously. The background error covariance is estimated using both the NMC approach and the Hollingsworth-Lönnberg method.
As a journalist, you can create a free Muck Rack account to customize your profile, list your contact preferences, and upload a portfolio of your best work.