# Data Assimilation of AOD and Estimation of Surface Particulate Matters over the Arctic
## 4 Summaries and Conclusions
Thus, it is expected that more accurate atmospheric levels of PMs can be available over the Arctic through the application of these studies. The following are available online at [[https://www.mdpi.com/2076](https://www.mdpi.com/2076)]([https://www.mdpi.com/2076](https://www.mdpi.com/2076)) -3417/11/4/1959/s1, Figure S1: Spatiotemporal map of the monthly availability of the MODIS AOD product for the entire domain, Figure S2: Annual emission fluxes of (a) SO\({}_{2}\), (b) NOx\({}_{w}\), (c) BC, (d) OC, (e) PM\({}_{10}\), (f) PM\({}_{2.5}\) for the regions (70\({}^{\circ}\) N-90\({}^{\circ}\) N; 60\({}^{\circ}\) W-60\({}^{\circ}\) E) from the eighteen inventories, Figure S3: Spatial distributions of the CMAQ model-estimated (first column), MODIS-observed (second column), and assimilated (third column) AODs over the Arctic from April 2008 to September 2008, Figure S4: Spatial distributions of monthly averaged PM\({}_{10}\) and PM\({}_{2.5}\) calculated from the CMAQ simulations and inferred from the linear relationship between PMs and assimilated AODs, Table S1: Monthly mean of PM\({}_{10}\) and PM\({}_{2.5}\) from the CMAQ simulation and linear estimation and their relative differences over the entire domain, Table S2: The optimized free parameters obtained from the sensitivity test. Conceptualization: K.M.H., C.H.J., R.-S.P. ; methodology: K.M.H., S.-Y.P., R.-S.P., S.L. ; resources: M.K., T.P., G.K., P.S. ; validation: S.L., Y.J.Y., B.Y.L., K.M.H. ; formal analysis: K.K., H.S.K., K.M.H. ; writing--review and editing: K.M.H., R.-S.P., C.H.J., S.-Y.P. All authors have read and agreed to the published version of the manuscript. Not applicable for studies not involving humans or animals. Not applicable for studies not involving humans. Not applicable for studies not involving humans or animals. [PERSON] Local and remote contributions to Arctic warming. _Geophys. Res. Lett._**2007**, _34_, L14704. [CrossRef]
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