Data · dataset · 2026
Source characteristics of oxygenated volatile organic compounds and hydrogen cyanide
Listed in National Center for Atmospheric Research
Description
Airborne trace gas measurements from Transport and Chemical Evolution over the Pacific (TRACE-P), Pacific Exploratory Mission (PEM)-Tropics B, and Intercontinental Chemical Transport Experiment-North America (INTEX-NA) experiments are analyzed to examine the major source factors contributing to the observed variabilities of oxygenated volatile organic compounds and cyanides. The positive matrix factorization method is applied to coincident measurements of 11 chemicals including CHâOH, CHâCOCHâ, CHâCHO, CâHâ, CâHâ, i-Câ Hââ, CO, CHâCâ, and CHBrâ.
Measurements of HCN and CHâCN are available for TRACE-P and INTEX-NA. We identify major source contributions from the terrestrial biosphere, biomass burning, industry/urban regions, and oceans. Spatial and back trajectory characteristics of these factors are examined.
Read the rest (2 more)
On the basis of TRACE-P and PEM-Tropics B data, we find a factor that explains 80â88% of the CH3OH variability, 20-40% of CHâCOCHâ, 7-35% of CHâCHO, and 41% of HCN, most likely representing the emissions from terrestrial biosphere. Our analysis suggested that biogenic emissions of HCN may be significant. Cyanogenesis in plants is likely a major emission process for HCN, which was not fully accounted for previously.
Larger contributions than previous global estimations to CHâCOCHâ and CHâCHO by biomass burning and industry/urban sources likely reflect significant secondary production from volatile organic compound oxidation. No evidence was found for large emissions of CHâCOCHâ from the ocean. The oceanic CHâCHO contribution implies large regional variations.
Links
Get the data
- Publisher page n2t.org/ark:/85065/d7hm58p5 ↗
documentation · download · from data ucar edu
Where it is published
- data.ucar.edu /dataset/source-characteristics-of-oxygenated-volatile-organic-… ↗
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=cc19be8c-84d5-4436-b70f-55e6fdb8d… ↗
metadata API · from data ucar edu
Topics
- From keywords
- Earth & Environmental Science · Ocean & Atmospheric Science
- Inferred from text
- Atmospheric sciences 74%
Provenance · 1 source records, 8 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| National Center for Atmospheric Research | cc19be8c-84d5-4436-b70f-55e6fdb8d743 | 10 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 (74%) |
| 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 |