Data · dataset · 2026
Impacts of meteoric sulfur in the Earth's atmosphere
Listed in National Center for Atmospheric Research
A meteoric sulfur input function and a sulfur ion chemistry scheme have been incorporated into a chemistry-climate model, in order to study the speciation of sulfur between the stratosphere and the thermosphere (similar to 20-120 km) and the impact of the sulfur input from ablation of cosmic dust.
Description
The simulations have been compared to rocket observations of SO+ between 85 and 110 km, MIPAS observations of SO2 between 20 and 45 km, and stratospheric balloon-borne measurements of H2SO4 vapor and sulfate aerosol.
These observations constrain the present-day global flux of meteoric sulfur to <= 1.0 t S d(-1), i.e., 2 orders of magnitude smaller than the flux of S into the stratosphere from OCS photooxidation and explosive volcanic SO2 injection. However, the meteoric sulfur flux is strongly focused into the polar vortices by the meridional circulation, and therefore, the contribution of SO2 of meteoric origin to the polar upper stratosphere during winter is substantial (similar to 30% at 50 km for a flux of 1.0 t S d(-1)).
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The Antarctic spring sulfate aerosol layer is found to be very sensitive to a moderate increase of the input rate of meteoric sulfur, showing a factor of 2 enhancement in total sulfate aerosol number density at 30 km for an input of 3.0 t S d(-1). The input rate estimate of 1.0 t S d(-1) suggests an enrichment of sodium relative to sulfur of 2.7 +/- 1.5 and is consistent with a total cosmic dust input rate of 44 t d(-1).
Links
Get the data
- Publisher page n2t.org/ark:/85065/d7mk6gck ↗
documentation · download · from data ucar edu
Where it is published
- data.ucar.edu /dataset/impacts-of-meteoric-sulfur-in-the-earths-atmosphere ↗
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=40d00539-60ed-46b2-8cf8-895585276… ↗
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 | 40d00539-60ed-46b2-8cf8-895585276c62 | 11 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 |