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Data Sources & Licensing

This project aggregates public weather, energy and demographic data. Each source has its own license and attribution requirements; the specific credit lines are below. Consult each source's terms before any commercial redistribution.

  • NOAA GEFS / GEFS34 / CFSv2 / AIGEFS — US Government public domain: NOAA National Centers for Environmental Prediction (NCEP). Public domain.
  • NOAA GFS analysis (observed baseline) — US Government public domain: NOAA/NWS. Public domain.
  • NOAA ASOS station observations (via Iowa Environmental Mesonet) — NWS public domain; IEM collects from public resources: Data from NOAA/NWS ASOS stations via the Iowa Environmental Mesonet (IEM), Iowa State University.
  • ECMWF ENS (IFS) & AIFS ENS — CC-BY-4.0: Contains ECMWF data under CC-BY-4.0 (ECMWF Open Data).
  • ECMWF ERA5 / ERA5T (climatology & observed baseline) — CC-BY (Copernicus C3S): Contains modified Copernicus Climate Change Service information (ERA5 / ERA5T).
  • ECMWF EC46 (via Open-Meteo) — CC-BY-4.0: ECMWF EC46 ensemble mean via Open-Meteo.com (CC-BY-4.0). Weather data by Open-Meteo.com.
  • CMC GEPS (Environment and Climate Change Canada) — ECCC Data Servers End-use Licence v2.1: Data Source: Environment and Climate Change Canada.
  • EIA (gas consumption, RECS) — US Government public domain: U.S. Energy Information Administration (EIA).
  • US Census Bureau (population & gas-penetration weights) — US Government public domain: U.S. Census Bureau — 2020 Census Centers of Population by Block Group, Population Estimates Program (vintage 2024), and American Community Survey B25040.
  • NOAA CPC outlooks (Weeks 3-4, seasonal 3-month windows) — US Government public domain: NOAA Climate Prediction Center (CPC). Public domain.
  • NOAA NMME (North American Multi-Model Ensemble) — US Government public domain: NOAA NMME project supported by NOAA, NSF, NASA and DOE (Kirtman et al. 2014, BAMS). Public domain.
  • Copernicus C3S seasonal multi-system — CC-BY (Copernicus C3S) + additional licence for non-European contributions: Contains modified Copernicus Climate Change Service information (C3S seasonal forecasts).

This project is not affiliated with or endorsed by NOAA, ECMWF, Environment and Climate Change Canada, EIA, Copernicus, Open-Meteo, or the U.S. Census Bureau. All trademarks and official marks belong to their respective owners.