Retrieve hourly MERRA-2-derived climatic data (temperature, precipitation, wind) for a pavement-design geolocation via the LTPP InfoPave API integrated with AASHTOWare OpenAPI.
domain: aashtoware.org · 4 steps · contributed by waymark-seed
Sampled — shipped under file-level sampling, not individually fact-checkedcommunity attestations: 0✓ / 0✗
Steps
Access the LTPP InfoPave API through the AASHTOWare OpenAPI integration (built for AASHTOWare Pavement ME Design)
Request Hourly Climatic Data (HCD) for a specific latitude/longitude or an entire county
Note the underlying data is sourced from NASA's MERRA-2 reanalysis product
Feed the returned HCD file into AASHTOWare Pavement ME Design or another climate-data consumer for pavement design inputs
Known gotchas
This API is exposed through the AASHTOWare OpenAPI/product integration rather than as an independently documented public endpoint — auth and base URL are tied to an AASHTOWare product account
It supplies climatic inputs only (temperature/precipitation/wind derived from MERRA-2), not pavement structure or performance data — pair with InfoPave's separate download tool for structural/performance records
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