@article{king_staicu_davis_reich_eder_2018, title={A functional data analysis of spatiotemporal trends and variation in fine particulate matter}, volume={184}, ISSN={["1873-2844"]}, DOI={10.1016/j.atmosenv.2018.04.001}, abstractNote={In this paper we illustrate the application of modern functional data analysis methods to study the spatiotemporal variability of particulate matter components across the United States. The approach models the pollutant annual profiles in a way that describes the dynamic behavior over time and space. This new technique allows us to predict yearly profiles for locations and years at which data are not available and also offers dimension reduction for easier visualization of the data. Additionally it allows us to study changes of pollutant levels annually or for a particular season. We apply our method to daily concentrations of two particular components of PM2.5 measured by two networks of monitoring sites across the United States from 2003 to 2015. Our analysis confirms existing findings and additionally reveals new trends in the change of the pollutants across seasons and years that may not be as easily determined from other common approaches such as Kriging.}, journal={ATMOSPHERIC ENVIRONMENT}, author={King, Meredith C. and Staicu, Ana-Maria and Davis, Jerry M. and Reich, Brian J. and Eder, Brian}, year={2018}, month={Jul}, pages={233–243} }
 @article{cazorla_sagotra_king_errandonea_2018, title={High-Pressure Phase Diagram and Superionicity of Alkaline Earth Metal Difluorides}, volume={122}, ISSN={["1932-7447"]}, DOI={10.1021/acs.jpcc.7b10975}, abstractNote={We study the high-pressure–high-temperature phase diagram and superionicity of alkaline earth metal (AEM) difluorides (AF2, A = Ca, Sr, Ba) with first-principles simulation methods. We find that the superionic behavior of SrF2 and BaF2 at high pressures differ appreciably from that previously reported for CaF2 [Phys. Rev. Lett. 2014, 113, 235902]. Specifically, the critical superionic temperature of SrF2 and BaF2 in the low-pressure cubic fluorite phase is not reduced by effect of compression, and the corresponding high-pressure orthorhombic contunnite phases become superionic at elevated temperatures. We get valuable microscopic insights into the superionic features of AEM difluorides in both the cubic fluorite and orthorhombic contunnite phases by means of ab initio molecular dynamics simulations. We rationalize our findings on the structural and superionic behavior of AF2 compounds in terms of simple ionic radii arguments and generalize them across the whole series of AEM dihalides (AB2, A = Mg, Ca, Sr...}, number={2}, journal={JOURNAL OF PHYSICAL CHEMISTRY C}, author={Cazorla, Claudio and Sagotra, Arun K. and King, Meredith and Errandonea, Daniel}, year={2018}, month={Jan}, pages={1267–1279} }