Sökning: id:"swepub:oai:DiVA.org:su-190256" >
Observational Evide...
Observational Evidence of Large Contribution from Primary Sources for Carbon Monoxide in the South Asian Outflow
-
- Dasari, Sanjeev, 1989- (författare)
- Stockholms universitet,Institutionen för miljövetenskap
-
- Andersson, August (författare)
- Stockholms universitet,Institutionen för miljövetenskap
-
Popa, Maria E. (författare)
-
visa fler...
-
Röckmann, Thomas (författare)
-
- Holmstrand, Henry (författare)
- Stockholms universitet,Institutionen för miljövetenskap
-
- Budhavant, Krishnakant (författare)
- Stockholms universitet,Institutionen för miljövetenskap,Maldives Meteorological Services, Republic of the Maldives; Indian Institute of Sciences (IISC), India
-
- Gustafsson, Örjan (författare)
- Stockholms universitet,Institutionen för miljövetenskap
-
visa färre...
-
(creator_code:org_t)
- 2021-12-16
- 2022
- Engelska.
-
Ingår i: Environmental Science and Technology. - : American Chemical Society (ACS). - 0013-936X .- 1520-5851. ; 56:1, s. 165-174
- Relaterad länk:
-
https://doi.org/10.1...
-
visa fler...
-
https://pubs.acs.org...
-
https://urn.kb.se/re...
-
https://doi.org/10.1...
-
visa färre...
Abstract
Ämnesord
Stäng
- South Asian air is among the most polluted in the world, causing premature death of millions and asserting a strong perturbation of the regional climate. A central component is carbon monoxide (CO), which is a key modulator of the oxidizing capacity of the atmosphere and a potent indirect greenhouse gas. While CO concentrations are declining elsewhere, South Asia exhibits an increasing trend for unresolved reasons. In this paper, we use dual-isotope (δ13C and δ18O) fingerprinting of CO intercepted in the South Asian outflow to constrain the relative contributions from primary and secondary CO sources. Results show that combustion-derived primary sources dominate the wintertime continental CO fingerprint (fprimary ∼ 79 ± 4%), significantly higher than the global estimate (fprimary ∼ 55 ± 5%). Satellite-based inventory estimates match isotope-constrained fprimary-CO, suggesting observational convergence in source characterization and a prospect for model–observation reconciliation. This “ground-truthing” emphasizes the pressing need to mitigate incomplete combustion activities for climate/air quality benefits in South Asia.
Ämnesord
- NATURVETENSKAP -- Geovetenskap och miljövetenskap (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences (hsv//eng)
Nyckelord
- air pollution
- incomplete combustion
- atmospheric chemistry
- isotopes
- source apportionment
- model−observation reconciliation
- Atmospheric Sciences and Oceanography
- atmosfärvetenskap och oceanografi
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
Hitta via bibliotek
Till lärosätets databas