Emissions, Fate and Transport of Persistent Organic Pollutants to the Arctic in a Changing Global Climate
- 30 January 2013
- journal article
- Published by American Chemical Society (ACS) in Environmental Science & Technology
- Vol. 47 (5), 2323-2330
- https://doi.org/10.1021/es304646n
Abstract
Climate change is expected to alter patterns of human economic activity and the associated emissions of chemicals, and also to affect the transport and fate of persistent organic pollutants (POPs). Here, we use a global-scale multimedia chemical fate model to analyze and quantify the impact of climate change on emissions and fate of POPs, and their transport to the Arctic. First, climate change effects under the SRES-A2 scenario are illustrated using case-studies for two well-characterized POPs, PCB153, and α-HCH. Then, we model the combined impact of altered emission patterns and climatic conditions on environmental concentrations of potential future-use substances with a broad range of chemical properties. Starting from base-case generic emission scenarios, we postulate changes in emission patterns that may occur in response to climate change: enhanced usage of industrial chemicals in an ice-free Arctic, and intensified application of agrochemicals due to higher crop production and poleward expansion of potential arable land. We find both increases and decreases in concentrations of POP-like chemicals in the Arctic in the climate change scenario compared to the base-case climate. During the phase of ongoing primary emissions, modeled increases in Arctic contamination are up to a factor of 2 in air and water, and are driven mostly by changes in emission patterns. After phase-out, increases are up to a factor of 2 in air and 4 in water, and are mostly attributable to changes in transport and fate of chemicals under the climate change scenario.This publication has 30 references indexed in Scilit:
- Influence of global climate change on chemical fate and bioaccumulation: The role of multimedia modelsEnvironmental Toxicology and Chemistry, 2012
- Screening for PBT Chemicals among the “Existing” and “New” Chemicals of the EUEnvironmental Science & Technology, 2012
- Processes and impacts of Arctic amplification: A research synthesisGlobal and Planetary Change, 2011
- Global climate change and contaminants—an overview of opportunities and priorities for modelling the potential implications for long-term human exposure to organic compounds in the ArcticJournal of Environmental Monitoring, 2011
- Quantifying the Perturbations of Persistent Organic Pollutants Induced by Climate ChangeEnvironmental Science & Technology, 2010
- Identifying New Persistent and Bioaccumulative Organics Among Chemicals in CommerceEnvironmental Science & Technology, 2010
- Modeling the Global Levels and Distribution of Polychlorinated Biphenyls in Air under a Climate Change ScenarioEnvironmental Science & Technology, 2009
- Screening Chemicals for the Potential to be Persistent Organic Pollutants: A Case Study of Arctic ContaminantsEnvironmental Science & Technology, 2008
- How Will Global Climate Change Affect Risks from Long-Range Transport of Persistent Organic Pollutants?Human and Ecological Risk Assessment: An International Journal, 2003
- Global Distribution and Budget of PCBs and HCB in Background Surface Soils: Implications for Sources and Environmental ProcessesEnvironmental Science & Technology, 2003