EPA Dynamically Downscaled Ensemble (EDDE) Version 1
Provided by: U.S. Environmental Protection Agency (https://www.epa.gov ), Office of Research and Development, Center for Environmental Measurement and Modeling, Atmospheric and Environmental Systems Modeling Division, part of the AWS Open Data Sponsorship Program
Provided by: U.S. Environmental Protection Agency (https://www.epa.gov ), Office of Research and Development, Center for Environmental Measurement and Modeling, Atmospheric and Environmental Systems Modeling Division, part of the AWS Open Data Sponsorship Program
EPA Dynamically Downscaled Ensemble (EDDE) Version 1
Provided by: U.S. Environmental Protection Agency (https://www.epa.gov ), Office of Research and Development, Center for Environmental Measurement and Modeling, Atmospheric and Environmental Systems Modeling Division, part of the AWS Open Data Sponsorship Program
Provided by: U.S. Environmental Protection Agency (https://www.epa.gov ), Office of Research and Development, Center for Environmental Measurement and Modeling, Atmospheric and Environmental Systems Modeling Division, part of the AWS Open Data Sponsorship Program
This product is part of the AWS Open Data Sponsorship Program and contains data sets that are publicly available for anyone to access and use. No subscription is required. Unless specifically stated in the applicable data set documentation, data sets available through the AWS Open Data Sponsorship Program are not provided and maintained by AWS.
Description
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- and high-emission scenarios from the Fifth Coupled Model Intercomparison Project (CMIP5) using the Weather Research and Forecasting (WRF) model. Scenarios were downscaled from the Community Earth System Model (CESM) and the Geophysical Fluid Dynamics Laboratory (GFDL) Coupled Model version 3 (CM3). Simulations followed the historical periods 1975-2005 (CESM only) and 1995-2005 (both CESM and CM3), and Representative Concentration Pathways (RCP) 4.5 for 2025-2100 (CESM only), RCP6.0 for 2025-2055 (CESM only), and RCP8.5 (both CESM and CM3). Data are in Network Common Data Form (netCDF) version 4, which is used in atmospheric modeling. The EDDE data in netCDF are further written to adhere to principles of Climate and Forecasting System (CF) Compliance to enhance portability and interoperability with data from other sources. The files are self-describing with metadata included in the netCDF header. Data reference: https://doi.org/10.23719/1530964 Some peer-reviewed publications that describe EDDE (without the name "EDDE"): https://doi.org/10.1080/10962247.2021.1970048 https://doi.org/10.5194/acp-18-15471-2018 https://doi.org/10.1080/10962247.2014.996270 https://doi.org/10.1175/JCLI-D-15-0233.1 https://doi.org/10.1002/2014JD021785
License
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 not subject to domestic copyright protection under 17 U.S.C. § 105. More details on the U.S. Public Domain license are available here: http://www.usa.gov/publicdomain/label/1.0/
Documentation
EDDE Version 1 can be referenced using https://doi.org/10.23719/1530964 Please see the Data Use Statement, technical updates, and additional background information on the EDDE webpage, accessible from: https://www.epa.gov/climate-research/climate-change-tools-protect-public-health-and-environment This dataset was most recently updated in January 2025.
How to cite
EPA Dynamically Downscaled Ensemble (EDDE) Version 1 was accessed on DATE from https://registry.opendata.aws/epa-edde-v1 .
US EPA, 2024, "EPA Dynamically Downscaled Ensemble (EDDE), Version 1", https://doi.org/10.23719/1530964 .
Update frequency
Quarterly
Support information
Managed by: U.S. Environmental Protection Agency (https://www.epa.gov ), Office of Research and Development, Center for Environmental Measurement and Modeling, Atmospheric and Environmental Systems Modeling Division
Contact: spero.tanya@epa.gov; mallard.megan@epa.gov
General AWS Data Exchange support
Resources on AWS
Description
EDDE data are compressed netCDF (https://unidata.ucar.edu/software/netcdf/ ) files that conform to Climate and Forecast (CF) metdata conventions (https://cfconventions.org ). The data can be ingested, processed, and visualized using standard netCDF utility routines in various programming languages. Information on the model projection and grid structure is contained in the header information of each netCDF file. Two timekeeping variables are in the files. The variable "time" conforms to CF conventions using the "hours since" construct, where the reference time is given as the initialization of the simulation. The "mtime" variable is a user-readable string that aligns with "time" expressed as YYYY-MM-DD_HH:MI:SS. Additional information can be found at https://www.epa.gov/climate-research/climate-change-tools-protect-public-health-and-environment
Resource type
S3 Bucket
Amazon Resource Name (ARN)
arn:aws:s3:::epa-eddeAWS Region
us-east-1AWS CLI Access (No AWS account required)
aws s3 ls --no-sign-request s3://epa-edde/Explore
Description
Notifications for EDDE bucket
Resource type
SNS Topic
Amazon Resource Name (ARN)
arn:aws:sns:us-east-1:127085394039:epa-edde-object_createdAWS Region
us-east-1