dataset · USA
EPA Dynamically Downscaled Ensemble (EDDE) Version 1
The data are a subset of the EPA Dynamically Downscaled Ensemble (EDDE), Version 1. EDDE is a collection of physics-based modeled data that represent 3D atmospheric conditions for historical and future periods under different scenarios. The EDDE Version 1 datasets cover the contiguous United States at a horizontal grid spacing of 36 kilometers at hourly increments. EDDE Version 1 includes simulations that have been dynamically downscaled from multiple global climate models (GCMs) under both mid-
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Licence: These datasets are products of the U.S. Government and are intended for public access and use. Unless otherwise specified, all data produced by the U.S EPA is, by default, in the public domain and are
Evidence quality: 48.8
Listed in aws-odr public catalogue API on 2026-10-16; relevance/value screened (haiku).
Metadata checked: 2026-10-14T13:20:00.000Z
What's in it
- Data offered llm-inferred
- 3D atmospheric conditions (historical and future, multiple scenarios) · near-surface air temperature · near-surface relative humidity · near-surface specific humidity · precipitation · radiation
- Coverage docs-verified
- Contiguous United States · Historical 1975-2005 (CESM only) and 1995-2005 (CESM and CM3); RCP4.5 2025-2100 (CESM only); RCP6.0 2025-2055 (CESM only); RCP8.5 (CESM and CM3)
- Resolution docs-verified
- 36 km horizontal grid spacing; hourly temporal increments
- Update frequency docs-verified
- Quarterly
- Formats docs-verified
- netCDF4 (CF-compliant)
- Access docs-verified
- Free and open; US Government public domain (no AWS account required for S3 access via AWS CLI)
Useful for
- Use cases llm-inferred
- Climate-change scenario inputs for drainage or flood-risk sensitivity studies (RCP8.5, CESM/CM3) · Hourly temperature, humidity and precipitation context for heat-stress or drought assessments in US projects · Historical-period (1995-2005) model output for checking downscaled climate baselines
- Audience llm-inferred
- climate risk consultants · hydrologists · drainage engineers · environmental scientists · GIS analysts
Limitations
- Constraints llm-inferred
- 36 km grid is coarse for small catchments and site-scale civils work · Contiguous US only; no UK coverage · Only two driving GCMs (CESM, GFDL CM3); some scenarios available from CESM only · Last update stated as January 2025, which is behind the quarterly update frequency · netCDF data requires scientific tooling; S3 bucket access only, no API or MCP tools
Evidence
- arn:aws:s3:::epa-edde, arn:aws:sns:us-east-1:127085394039:epa-edde-object_created
- https://registry.opendata.aws/epa-edde-v1/
Check upstream coverage, uncertainty and licence before use. Station observations are not forecasts or design levels.