Webbläsaren som du använder stöds inte av denna webbplats. Alla versioner av Internet Explorer stöds inte längre, av oss eller Microsoft (läs mer här: * https://www.microsoft.com/en-us/microsoft-365/windows/end-of-ie-support).

Var god och använd en modern webbläsare för att ta del av denna webbplats, som t.ex. nyaste versioner av Edge, Chrome, Firefox eller Safari osv.

Karl Ljung

Karl Ljung

Universitetsadjunkt

Karl Ljung

Recent Increased Loading of Carbonaceous Pollution from Biomass Burning in the Baltic Sea

Författare

  • Karl Ljung
  • Petra L. Schoon
  • Marcus Rudolf
  • Laurie M. Charrieau
  • Sha Ni
  • Helena L. Filipsson

Summary, in English

Black carbon (BC), spheroidal carbonaceous particles (SCP), and polycyclic aromatic hydrocarbons (PAH) are carbonaceous pollutants affecting the climate, environment, and human health. International regulations limit their emissions, and the present emissions are followed by monitoring programs. However, the monitoring programs have limited spatio-temporal coverage and only span the last decades. We can extend the knowledge of historical emission rates by measuring pollution levels in radiometrically dated marine and lacustrine sediment sequences. Here we present measurements of BC, SCP, and PAH from a sediment sequence sampled in the Öresund strait, between Denmark and Sweden and dated back to CE 1850. Our data show a massive increase in the burial rates of all measured pollutants starting in the 1940s. The pollution deposition peaked in the 1970-1980s and declined through the 1990s. However, the declining trend was reversed in the 2000s. Source appointment of PAHs shows a relatively higher contribution of emissions from wood-burning since CE 2000. This coincides with a change towards the increased use of biomass for both municipal and regional energy production in Scandinavia. Our results demonstrate that changes in energy production have caused changes in the delivery of carbonaceous pollution to marine environments. The increase in particle emissions from wood burning is potentially posing a future environmental and health risk.

Avdelning/ar

  • Kvartärgeologi
  • Miljövetenskap
  • MERGE: ModElling the Regional and Global Earth system
  • Centrum för miljö- och klimatvetenskap (CEC)

Publiceringsår

2022

Språk

Engelska

Sidor

35102-35108

Publikation/Tidskrift/Serie

ACS Omega

Volym

7

Dokumenttyp

Artikel i tidskrift

Förlag

The American Chemical Society (ACS)

Ämne

  • Climate Research

Nyckelord

  • black carbon
  • marine sediment
  • soot
  • biomass

Status

Published

Projekt

  • Drivers and Impacts of Coastal Ocean Acidification

ISBN/ISSN/Övrigt

  • ISSN: 2470-1343