Investigation of atmospheric transport and chemistry of semivolatile organic pollutants using earth system models
The global atmospheric cycling of persistent organic pollutants is complex because of partitioning among phases of the aerosol and revolatilization. Many of the substances are detrimental to human health and the environment. Global dynamical multicompartmental chemistry and transport models are need...
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Johannes Gutenberg-Universität Mainz
2018
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ftunivmainzpubl:oai:openscience.ub.uni-mainz.de:20.500.12030/3852 2023-05-15T14:34:13+02:00 Investigation of atmospheric transport and chemistry of semivolatile organic pollutants using earth system models Octaviani, Mega 2018 https://openscience.ub.uni-mainz.de/handle/20.500.12030/3852 https://hdl.handle.net/20.500.12030/3852 https://doi.org/10.25358/openscience-3850 eng eng Johannes Gutenberg-Universität Mainz http://doi.org/10.25358/openscience-3850 https://openscience.ub.uni-mainz.de/handle/20.500.12030/3852 in Copyright https://rightsstatements.org/vocab/InC/1.0/ openAccess ddc:500 Dissertation publishedVersion Text doc-type:doctoralThesis 2018 ftunivmainzpubl https://doi.org/20.500.12030/3852 https://doi.org/10.25358/openscience-3850 2022-09-15T11:48:26Z The global atmospheric cycling of persistent organic pollutants is complex because of partitioning among phases of the aerosol and revolatilization. Many of the substances are detrimental to human health and the environment. Global dynamical multicompartmental chemistry and transport models are needed to investigate their fate and distributions. The first study investigates climate change influences on the meridional transports of dichlorodiphenyltrichloroethane (DDT) and polychlorinated biphenyls (PCBs) to and from the Arctic by application of the MPI-MCTM model. The objectives are to determine major transport gates along the Arctic Circle, the trends in import and export fluxes, and the relationships between transports and two selected patterns of climate variability, the Arctic Oscillation (AO) and the North Atlantic Oscillation (NAO), under present-day (1970−1999) and future (2070−2099) climate. The pollutants enter the Arctic by passing through the Alaska−Northwest Territories regions, Greenland, the Norwegian Sea−Northwestern Russia, and the Urals−Siberian; whereas they leave the Arctic via the Canadian Arctic and Eastern Russia. DDT import fluxes to the Arctic show a decreasing trend during the present climate, but the trend is expected to change to increasing import fluxes. In contrast, PCB153 export from the Arctic is expected to be increasing in the future climate. The zonal mean meridional fluxes across the Arctic Circle are positively correlated with AO/NAO in winter, corresponding to high net imports when the frequency of positive AO/NAO increases. Under the future climate, there will be an increasing significance of the correlations for DDT while the correlations for PCB153 are expected to weaken. It is concluded that the long-term accumulation trends of other persistent pollutants in the Arctic need to be studied specifically. In the second study, the new module SVOC was developed and coupled to the ECHAM/MESSy Atmospheric Chemistry (EMAC) model to facilitate a continuous development of modeling ... Doctoral or Postdoctoral Thesis Arctic Climate change Greenland Human health North Atlantic North Atlantic oscillation Northwest Territories Norwegian Sea Alaska Gutenberg Open Science (Open-Science-Repository of the Johannes Gutenberg-University Mainz) Arctic Greenland Northwest Territories Norwegian Sea |
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Open Polar |
collection |
Gutenberg Open Science (Open-Science-Repository of the Johannes Gutenberg-University Mainz) |
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ftunivmainzpubl |
language |
English |
topic |
ddc:500 |
spellingShingle |
ddc:500 Octaviani, Mega Investigation of atmospheric transport and chemistry of semivolatile organic pollutants using earth system models |
topic_facet |
ddc:500 |
description |
The global atmospheric cycling of persistent organic pollutants is complex because of partitioning among phases of the aerosol and revolatilization. Many of the substances are detrimental to human health and the environment. Global dynamical multicompartmental chemistry and transport models are needed to investigate their fate and distributions. The first study investigates climate change influences on the meridional transports of dichlorodiphenyltrichloroethane (DDT) and polychlorinated biphenyls (PCBs) to and from the Arctic by application of the MPI-MCTM model. The objectives are to determine major transport gates along the Arctic Circle, the trends in import and export fluxes, and the relationships between transports and two selected patterns of climate variability, the Arctic Oscillation (AO) and the North Atlantic Oscillation (NAO), under present-day (1970−1999) and future (2070−2099) climate. The pollutants enter the Arctic by passing through the Alaska−Northwest Territories regions, Greenland, the Norwegian Sea−Northwestern Russia, and the Urals−Siberian; whereas they leave the Arctic via the Canadian Arctic and Eastern Russia. DDT import fluxes to the Arctic show a decreasing trend during the present climate, but the trend is expected to change to increasing import fluxes. In contrast, PCB153 export from the Arctic is expected to be increasing in the future climate. The zonal mean meridional fluxes across the Arctic Circle are positively correlated with AO/NAO in winter, corresponding to high net imports when the frequency of positive AO/NAO increases. Under the future climate, there will be an increasing significance of the correlations for DDT while the correlations for PCB153 are expected to weaken. It is concluded that the long-term accumulation trends of other persistent pollutants in the Arctic need to be studied specifically. In the second study, the new module SVOC was developed and coupled to the ECHAM/MESSy Atmospheric Chemistry (EMAC) model to facilitate a continuous development of modeling ... |
format |
Doctoral or Postdoctoral Thesis |
author |
Octaviani, Mega |
author_facet |
Octaviani, Mega |
author_sort |
Octaviani, Mega |
title |
Investigation of atmospheric transport and chemistry of semivolatile organic pollutants using earth system models |
title_short |
Investigation of atmospheric transport and chemistry of semivolatile organic pollutants using earth system models |
title_full |
Investigation of atmospheric transport and chemistry of semivolatile organic pollutants using earth system models |
title_fullStr |
Investigation of atmospheric transport and chemistry of semivolatile organic pollutants using earth system models |
title_full_unstemmed |
Investigation of atmospheric transport and chemistry of semivolatile organic pollutants using earth system models |
title_sort |
investigation of atmospheric transport and chemistry of semivolatile organic pollutants using earth system models |
publisher |
Johannes Gutenberg-Universität Mainz |
publishDate |
2018 |
url |
https://openscience.ub.uni-mainz.de/handle/20.500.12030/3852 https://hdl.handle.net/20.500.12030/3852 https://doi.org/10.25358/openscience-3850 |
geographic |
Arctic Greenland Northwest Territories Norwegian Sea |
geographic_facet |
Arctic Greenland Northwest Territories Norwegian Sea |
genre |
Arctic Climate change Greenland Human health North Atlantic North Atlantic oscillation Northwest Territories Norwegian Sea Alaska |
genre_facet |
Arctic Climate change Greenland Human health North Atlantic North Atlantic oscillation Northwest Territories Norwegian Sea Alaska |
op_relation |
http://doi.org/10.25358/openscience-3850 https://openscience.ub.uni-mainz.de/handle/20.500.12030/3852 |
op_rights |
in Copyright https://rightsstatements.org/vocab/InC/1.0/ openAccess |
op_doi |
https://doi.org/20.500.12030/3852 https://doi.org/10.25358/openscience-3850 |
_version_ |
1766307309757136896 |