Data · dataset · 2026
On the origin of pronounced Oâ gradients in the thunderstorm outflow region during DC3
Listed in National Center for Atmospheric Research
Unique in situ measurements of CO, Oâ, SOâ, CHâ, NO, NOx, NOy, VOC, CN, and rBC were carried out with the German Deutsches Zentrum für Luft- und Raumfahrt (DLR)-Falcon aircraft in the central U.S. thunderstorms during the Deep Convective Clouds and Chemistry experiment in summer 2012.
Description
Fresh and aged anvil outflow (9-12âkm) from supercells, mesoscale convective systems, mesoscale convective complexes, and squall lines were probed over Oklahoma, Texas, Colorado, and Kansas.
For three case studies (30 May and 8 and 12 June) a combination of trace species, radar, lightning, and satellite information, as well as model results, were used to analyze and design schematics of major trace gas transport pathways within and in the vicinity of the probed thunderstorms. The impact of thunderstorms on the Oâ composition in the upper troposphere/lower stratosphere (LS) region was analyzed. Overshooting cloud tops injected high amounts of biomass burning and lightning-produced NOx emissions into the LS, in addition to low Oâ mixing ratios from the lower troposphere.
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As a dynamical response, Oâ-rich air from the LS was transported downward into the anvil and also surrounded the outflow. The ÎOâ/ÎCO ratio was determined in the anvil outflow region. A pronounced in-mixing of Oâ-rich stratospheric air masses was observed in the outflow indicated by highly positive or even negative ÎOâ/ÎCO ratios (+1.4 down to -3.9).
Photochemical Oâ production (ÎOâ/ÎCOâ=â+0.1) was found to be minor in the recently lofted pollution plumes. Oâ mixing ratios within the aged anvil outflow were mainly enhanced due to dynamical processes.
Links
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- Publisher page n2t.org/ark:/85065/d7sb47dh ↗
documentation · download · from data ucar edu
Where it is published
- data.ucar.edu /dataset/on-the-origin-of-pronounced-oa-gradients-in-the-thunde… ↗
National Center for Atmospheric Research dataset page
landing page · from data ucar edu
Catalogue records · 1
- CKAN API data.ucar.edu/api/3/action/package_show?id=9d2b7f82-4654-446b-b55c-312d450ce… ↗
metadata API · from data ucar edu
Topics
- From keywords
- Earth & Environmental Science · Ocean & Atmospheric Science
- Inferred from text
- Atmospheric sciences 73%
Provenance · 1 source records, 8 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| National Center for Atmospheric Research | 9d2b7f82-4654-446b-b55c-312d450ce78f | 11 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| concepts[field].anzsrc:group:3701 | enrichment · data ucar edu | taxonomy-embedding@1.1.0 | title+keywords+description (73%) |
| concepts[field].local:field:earth-environmental | mapping · data ucar edu | connector:data_ucar_edu@1.0.0 | |
| concepts[field].local:field:ocean-atmospheric | mapping · data ucar edu | connector:data_ucar_edu@1.0.0 | |
| created_date | source · data ucar edu | connector:data_ucar_edu@1.0.0 | |
| description | source · data ucar edu | connector:data_ucar_edu@1.0.0 | /notes |
| publication_date | source · data ucar edu | connector:data_ucar_edu@1.0.0 | |
| title | source · data ucar edu | connector:data_ucar_edu@1.0.0 | /title |
| updated_date | source · data ucar edu | connector:data_ucar_edu@1.0.0 |