Stephan A. Durham; Bora Cetin; Charles Schwartz; Barton Forman; and Leela Sai Praveen Gopisetti
Climate Effects, Ground-based Weather Station (GBWS), Mechanistic-Empirical Pavement Design Guide (MEPDG), ModernEra Retrospective Analysis for Research and Applications (MERRA), North American Regional Reanalysis (NARR), Pavement Analyses
This study compares the predicted distresses of asphalt concrete (AC) and jointed plain concrete pavement (JPCP) using four different climate data sources: (1) ground-based weather station (GBWS) data, (2) the North American Regional Reanalysis (NARR) data, and (3 and 4) the Modern-Era Retrospective Analysis for Research and Applications (MERRA) versions 1 and 2 (MERRA-1 and MERRA-2) data. The results indicate that pavement performance predictions generated using these data showed disagreement among some of the climate data sources, especially for MERRA-2. Comprehensive diurnal and time-series analyses of the raw climate data found significant disagreements in the percent sunshine data.