Abstract

As described in Gaubert et al. (2016), our reanalysis of MOPITT CO uses the Community Atmosphere Model with Chemistry of the Community Earth System Model (CESM/CAMChem) (Tilmes et al., 2015) and the ensemble-based Data Assimilation Research Testbed (DART) (Anderson et al., 2009). Both conventiona... Show moreAs described in Gaubert et al. (2016), our reanalysis of MOPITT CO uses the Community Atmosphere Model with Chemistry of the Community Earth System Model (CESM/CAMChem) (Tilmes et al., 2015) and the ensemble-based Data Assimilation Research Testbed (DART) (Anderson et al., 2009). Both conventional Meteorological observations and MOPITT V5J (MOPITT-CO) multispectral retrievals of CO partial columns (Deeter et al., 2013; Worden et al., 2010) are assimilated every 6 h as described in Barré et al. (2015). We investigated the impact of assimilation on the chemical state and disentangle the chemistry and dynamical effect on the CO trends, and related OH trend. Show less