Delivery of Suomi National Polar-orbiting Partnership (Suomi NPP) satellite data products will cease on November 1, 2026. Data users should transition now to alternative products from NOAA-21 and NOAA-20.
Suomi NPP data announcement
WNA-BackTraj Data Access and Tools
To cite the campaign dataset, please use the following campaign DOI and citation:
Cui, Y., Chang, K.-L., Lee, Ju-Mee, & Iraci, T. (2025). FLEXPART for Western North American Ozone Observations [Dataset]. NASA Langley Atmospheric Science Data Center Distributed Active Archive Center. https://doi.org/10.5067/ASDC/WNA-BACKTRAJ
WNA-BackTraj Documents
| Name Sort descending | Description | File Type | Date Published | |
|---|---|---|---|---|
| FLEXPART for Western North American Ozone Observations Receptor Information | CSV (21.71 mb) | |||
| ReadMe file for monthly back-trajectory data from FLEXPART-ERA5 | DOCX (20.56 kb) | |||
| ReadMe file for the Gridded Ozone Dataset | DOCX (19.33 kb) | |||
| ReadMe file for the native FLEXPART-ERA5 SRR dataset | DOCX (16.63 kb) |
WNA-BackTraj Datasets
| Dataset Sort descending | Platforms | Temporal Extent | Spatial Extent | Location | Data State |
|---|---|---|---|---|---|
| Western North American FLEXPART Back Trajectory 2018 Data | FLEXPART | 2018-01-01 to 2018-12-31 |
N: 90 S: 0 E: 180 W: -180 |
WESTERN UNITED STATES, Troposphere, NORTHERN HEMISPHERE, WESTERN HEMISPHERE | COMPLETE |
| Western North American FLEXPART Back Trajectory 2019 Data | FLEXPART | 2019-01-01 to 2019-12-31 |
N: 90 S: 0 E: 180 W: -180 |
WESTERN UNITED STATES, Troposphere, NORTHERN HEMISPHERE, WESTERN HEMISPHERE | COMPLETE |
| Western North American FLEXPART Back Trajectory 2020 Data | FLEXPART | 2020-01-01 to 2020-12-31 |
N: 90 S: 0 E: 180 W: -180 |
WESTERN UNITED STATES, Troposphere, NORTHERN HEMISPHERE, WESTERN HEMISPHERE | COMPLETE |
| Western North American FLEXPART Back Trajectory 2021 Data | FLEXPART | 2021-01-01 to 2021-12-31 |
N: 90 S: 0 E: 180 W: -180 |
WESTERN UNITED STATES, Troposphere, NORTHERN HEMISPHERE, WESTERN HEMISPHERE | COMPLETE |
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