Array · collection · 2025
Western North American FLEXPART Back Trajectory 2010 Data
Listed in NASA Earthdata CMR and NASA Data Portal — shown once because both records carry DOI 10.5067/wna-backtraj/2010
WNA-FLEXPART-BackTraj-2010 is the 2010 Western North America Back Trajectory data using the FLEXible PARTicle (FLEXPART) dispersion model.
Description
Data collection for this product is complete. Backward simulations of airmass transport using a Lagrangian Particle Dispersion Model (LPDM) framework can establish source-receptor relationships (SRRs), supporting analysis of source contributions from various geospatial regions and atmospheric layers to downwind observations.
In this study, we selected receptor locations to match gridded ozone observations over Western North America (WNA) from ozonesonde, lidar, commercial aircraft sampling, and aircraft campaigns (1994-2021). For each receptor, we used the FLEXible PARTicle (FLEXPART) dispersion model, driven by ERA5 reanalysis data, to achieve 15-day backwards SRR calculations, providing global simulations at high temporal (hourly) and spatial (1° x 1°) resolution, from the surface up to 20 km above ground level.
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This product retains detailed information for each receptor, including the gridded ozone value product, allowing the user to illustrate and identify source contributions to various subsets of ozone observations in the troposphere above WNA over nearly 3 decades at different vertical layers and temporal scales, such as diurnal, daily, seasonal, intra-annual, and decadal. This model product can also support source contribution analyses for other atmospheric components observed over WNA, if other co-located observations have been made at the spatial and temporal scales defined for some or all of the gridded ozone receptors used here.
These data products were generated with support from NASA’s Atmospheric Composition Campaign Data Analysis and Modeling program and the NASA High-End Computing (HEC) Program through the NASA Advanced Supercomputing (NAS) Division at Ames Research Center (award SMD-20-28429430). The critical role of in situ measurements collected by many individual research teams, as well as contributions in model development and intermediate analyses, is gratefully acknowledged.
For further information, please contact the authors of the manuscripts describing the datasets. Information is included in the ReadMe files, which are provided in the Related URLs.
Links
Get the data
- DOI for WNA-FLEXPART-BackTraj-2010 doi.org/10.5067/wna-backtraj/2010 ↗
landing page · download · DOI / persistent id · from NASA CMR, data nasa gov
- Resource essd.copernicus.org/articles/17/5903/2025 ↗
Global source–receptor-relationship database for integrated tropospheric ozone observations from multiplatform datasets in western North America during 1994–2021, Cui et al. (2025)
documentation · download · from NASA CMR, data nasa gov
- Resource agupubs.onlinelibrary.wiley.com/doi/10.1029/2022JD038090 ↗
Diverging Ozone Trends Above Western North America: Boundary Layer Decreases Versus Free Tropospheric Increases (Chang et al. 2023)
documentation · download · from NASA CMR, data nasa gov
- FLEXPART Data Accession Request zenodo.org/records/14227019 ↗
documentation · download · from NASA CMR, data nasa gov
- FLEXPART Receptor Information asdc.larc.nasa.gov/wagdocuments/602/Receptor_western_NAmerica_ozone_obs_1994_2021… ↗
documentation · download · from NASA CMR, data nasa gov
- How to cite ASDC data asdc.larc.nasa.gov/citing-data ↗
documentation · download · from NASA CMR, data nasa gov
- Original Metadata cmr.earthdata.nasa.gov/search/concepts/C4177515335-LARC_CLOUD.iso19115 ↗
download · from data nasa gov
- cmr.earthdata.nasa.gov /virtual-directory/collections/C4177515335-LARC_CLOUD ↗
Virtual Directory for WNA-FLEXPART-BackTraj-2010_1
download · from NASA CMR
- search.earthdata.nasa.gov /search/granules?p=C4177515335-LARC_CLOUD ↗
Earthdata Search for WNA-FLEXPART-BackTraj-2010_1 (NASA Application to search, discover, visualize, refine, and access NASA Earth Observation data)
download · from NASA CMR
Where it is published
- NASA Data Portal dataset page data.nasa.gov/dataset/western-north-american-flexpart-back-trajectory-2010-d… ↗
landing page · from data nasa gov
Catalogue records · 3
- CMR UMM-JSON cmr.earthdata.nasa.gov/search/concepts/C4177515335-LARC_CLOUD.umm_json ↗
metadata API · from NASA CMR
- CKAN API data.nasa.gov/api/3/action/package_show?id=231d1e26-7a78-42db-8b87-ce36df151… ↗
metadata API · from data nasa gov
- CMR record cmr.earthdata.nasa.gov/search/concepts/C4177515335-LARC_CLOUD.html ↗
catalogue entry · from NASA CMR
Topics
- Stated by source
- FLEXible PARTicle dispersion model · NOT APPLICABLE · Tropospheric Ozone
- From keywords
- Astronomy & Astrophysics · Earth & Environmental Science · Ocean & Atmospheric Science · Physics
Provenance · 2 source records, 17 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| NASA Earthdata CMR | C4177515335-LARC_CLOUD | 7 d ago | JSON v1 |
| NASA Data Portal | 231d1e26-7a78-42db-8b87-ce36df15156e | 4 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[field].local:field:astronomy | mapping · data nasa gov | connector:data_nasa_gov@1.0.0 | |
| concepts[field].local:field:earth-environmental | mapping · data nasa gov | connector:data_nasa_gov@1.0.0 | |
| concepts[field].local:field:ocean-atmospheric | mapping · data nasa gov | connector:data_nasa_gov@1.0.0 | |
| concepts[field].local:field:physics | mapping · data nasa gov | connector:data_nasa_gov@1.0.0 | |
| concepts[instrument].gcmd_instrument:not-applicable | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/atmosphere/air-quality/tropospheric-ozone | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[platform].gcmd_platform:flexpart | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| created_date | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| description | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/Abstract |
| license_text | source · data nasa gov | connector:data_nasa_gov@1.0.0 | |
| publication_date | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| spatial | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/SpatialExtent |
| temporal | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/TemporalExtents |
| title | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/EntryTitle |
| updated_date | source · data nasa gov | connector:data_nasa_gov@1.0.0 | |
| version_label | source · NASA CMR | connector:nasa_cmr@1.0.0 |