Downloading data from S3 Bucket

This readme refers to the data within the following dataset on AWS, uploaded for Alison Eyth by the CMAS Center
last updated July 15, 2025

2019 CB6AE7 Emissions and MCIP datasets
This dataset is available as part of the AWS Open Data Program, therefore egress fees are not charged to either the host or the person downloading the data.
The mcip data were generated from a 12-km WRFv4.1.1 simulation and processed using MCIPv5.3.3 on the 12US1 grid for the entire year of 2019 plus a 10-day spin-up period beginning in late December 2018.
The emissions data were generated for the 2019 platform.
Instructions for downloading the aws command line.

Instructions to Download AWS Command Line
Once you have it installed, you can use it without credentials.
Example commands:
To query how much data is in a bucket:

aws s3 ls --summarize --region=us-east-1 --human-readable --recursive s3://2019platform

Tail of Output:

2023-06-20 07:53:38    1.1 GiB 2019platform/2019ge_emissions/smoke_out/2019ge_cb6_19k/12US2/cmaq_cb6ae7/merged_nobeis_norwc/emis_mole_all_20191229_12US2_nobeis_norwc_2019ge_cb6_19k.ncf
2023-06-20 07:53:51    1.1 GiB 2019platform/2019ge_emissions/smoke_out/2019ge_cb6_19k/12US2/cmaq_cb6ae7/merged_nobeis_norwc/emis_mole_all_20191230_12US2_nobeis_norwc_2019ge_cb6_19k.ncf
2023-06-20 07:53:58    1.1 GiB 2019platform/2019ge_emissions/smoke_out/2019ge_cb6_19k/12US2/cmaq_cb6ae7/merged_nobeis_norwc/emis_mole_all_20191231_12US2_nobeis_norwc_2019ge_cb6_19k.ncf
2023-07-12 10:18:38   30.9 KiB index.html

Total Objects: 9905
   Total Size: 2.0 TiB

To copy or download this data use the following command:

aws s3 --no-sign-request --region=us-east-1 cp --recursive s3://2019platform /your/local/directory/

Please submit any questions or difficulties as a new issue on the CMAS User Forum.
CMAS User Forum