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From page 3... ...
The model has two boundary conditions: the surface temperature and the constant deep ground temperature node. At the upper boundary, the air temperature, wind speed, solar radiation, and pavement absorptivity and emissivity are used to determine the quantity of heat flowing into or out of the pavement.
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2.2 Data Sources Three different data sources have been used in Pavement ME, namely, physical weather stations [e.g., the National Climatic Data Center (NCDC) and others]
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MERRA-2 data provide opportunities for enhancements to the climatic parameters and module calculations for pavement design using Pavement ME. They also provide improved climatology; higher frequency outputs, including hourly data; and additional locations beyond the United States.
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From page 6... ...
– The EICM sets a predefined limit on the amount of convective heat transfer coefficient. • Model Limitations – The atmospheric energy balance model included in the EICM was derived using data from the Midwest United States and may not be applicable for another region.
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