Data · dataset · 2026
Bimodal distribution of free tropospheric ozone over the tropical western Pacific revealed by airborne observations
Listed in National Center for Atmospheric Research
A recent airborne field campaign over the remote western Pacific obtained the first intensive in situ ozone sampling over the warm pool region from oceanic surface to 15âkm altitude (near 360âK potential temperature level).
Description
The new data set quantifies ozone in the tropical tropopause layer under significant influence of convective outflow. The analysis further reveals a bimodal distribution of free tropospheric ozone mixing ratio.
A primary mode, narrowly distributed around 20âppbv, dominates the troposphere from the surface to 15âkm. A secondary mode, broadly distributed with a 60âppbv modal value, is prominent between 3 and 8âkm (320âK to 340âK potential temperature levels). The latter mode occurs as persistent layers of ozone-rich drier air and is characterized by relative humidity under 45%.
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Possible controlling mechanisms are discussed. These findings provide new insight into the physical interpretation of the "S"-shaped mean ozone profiles in the tropics.
Links
Get the data
- Publisher page n2t.org/ark:/85065/d76h4jmc ↗
documentation · download · from data ucar edu
Where it is published
- data.ucar.edu /dataset/bimodal-distribution-of-free-tropospheric-ozone-over-t… ↗
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=ee6a8ca8-8ebb-4b13-8560-4a2192583… ↗
metadata API · from data ucar edu
Topics
- From keywords
- Earth & Environmental Science · Ocean & Atmospheric Science
Provenance · 1 source records, 7 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| National Center for Atmospheric Research | ee6a8ca8-8ebb-4b13-8560-4a2192583b1a | 13 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| 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 |