Paleo-perspectives on environmental change in the high Arctic: the Canadian Contribution
Background: The snow and ice of the polar regions contain a wealth of information on the variability of the Earth's climate, past and present, and atmospheric composition. Many of the chemical compounds and aerosols found in the atmosphere find their way to the Arctic and are retained by the sn...
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ftborealisdata:hdl:10864/10238 2023-05-15T14:44:29+02:00 Paleo-perspectives on environmental change in the high Arctic: the Canadian Contribution Jocelyne Bourgeios Christian Zdanowicz David Burgess David Fisher David Lean Jiancheng Zheng Michael Krachler Roy Koerner William Shotyk https://hdl.handle.net/10864/10238 unknown Borealis https://hdl.handle.net/10864/10238 Atmospheric composition Mercury fluxes Greenland Paleoclimate Climate change Temperature Snow Ice cores Nunavut Manitoba ftborealisdata 2022-10-10T05:52:35Z Background: The snow and ice of the polar regions contain a wealth of information on the variability of the Earth's climate, past and present, and atmospheric composition. Many of the chemical compounds and aerosols found in the atmosphere find their way to the Arctic and are retained by the snow. Within large ice caps and ice sheets, annual snow layers accumulate. At depth, these layers are transformed into ice; preserving in the process much of their environmental signature. Thus, through ice core analysis, a glimpse of the pre-industrial atmosphere is offered, allowing us to place recent changes into perspective. Objectives: This project consists of three sub-projects which are closely linked in theme and method. Collectively, their aim is to document and reconstruct short and long term changes in climate and atmospheric contaminant deposition in the Canadian Arctic and neighbouring regions by analysing snow and ice cores. 1. Trends in the distribution of anthropogenic contaminants in the circumpolar region, is to conduct a pan Arctic survey of Arctic snow in order to quantify present levels and rates of accumulation of airborne contaminants. This activity is associated with the internationally approved COPOL program (IPY # 175) and with two Environment Canada-led IPY programs: (1) OASIS-CANADA: Understanding Ozone and Mercury in the Air Over the Arctic Ocean and (2) Pollutants Travelling in the Air to the Arctic. 2. Paleo-perspectives on environmental change in the High A rctic is closely associated to the study described above. The aim is to extend the record of atmospheric mercury and trace metals by sampling snow from a deep pit and from firn cores. Also included in this study the measurement of melt features observed in the snow. 3. Greenland Ice Sheet reactions to past and present climate change is to further explore the links between trace elements, pollen assemblages, and climate - particularly during glacial, interglacial, and transitional periods. To that end, we have joined the large-scale, ... Other/Unknown Material Arctic Arctic Ocean Climate change Greenland ice core Ice Sheet IPY Nunavut Borealis Arctic Arctic Ocean Canada Greenland Nunavut |
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Open Polar |
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Borealis |
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ftborealisdata |
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topic |
Atmospheric composition Mercury fluxes Greenland Paleoclimate Climate change Temperature Snow Ice cores Nunavut Manitoba |
spellingShingle |
Atmospheric composition Mercury fluxes Greenland Paleoclimate Climate change Temperature Snow Ice cores Nunavut Manitoba Jocelyne Bourgeios Christian Zdanowicz David Burgess David Fisher David Lean Jiancheng Zheng Michael Krachler Roy Koerner William Shotyk Paleo-perspectives on environmental change in the high Arctic: the Canadian Contribution |
topic_facet |
Atmospheric composition Mercury fluxes Greenland Paleoclimate Climate change Temperature Snow Ice cores Nunavut Manitoba |
description |
Background: The snow and ice of the polar regions contain a wealth of information on the variability of the Earth's climate, past and present, and atmospheric composition. Many of the chemical compounds and aerosols found in the atmosphere find their way to the Arctic and are retained by the snow. Within large ice caps and ice sheets, annual snow layers accumulate. At depth, these layers are transformed into ice; preserving in the process much of their environmental signature. Thus, through ice core analysis, a glimpse of the pre-industrial atmosphere is offered, allowing us to place recent changes into perspective. Objectives: This project consists of three sub-projects which are closely linked in theme and method. Collectively, their aim is to document and reconstruct short and long term changes in climate and atmospheric contaminant deposition in the Canadian Arctic and neighbouring regions by analysing snow and ice cores. 1. Trends in the distribution of anthropogenic contaminants in the circumpolar region, is to conduct a pan Arctic survey of Arctic snow in order to quantify present levels and rates of accumulation of airborne contaminants. This activity is associated with the internationally approved COPOL program (IPY # 175) and with two Environment Canada-led IPY programs: (1) OASIS-CANADA: Understanding Ozone and Mercury in the Air Over the Arctic Ocean and (2) Pollutants Travelling in the Air to the Arctic. 2. Paleo-perspectives on environmental change in the High A rctic is closely associated to the study described above. The aim is to extend the record of atmospheric mercury and trace metals by sampling snow from a deep pit and from firn cores. Also included in this study the measurement of melt features observed in the snow. 3. Greenland Ice Sheet reactions to past and present climate change is to further explore the links between trace elements, pollen assemblages, and climate - particularly during glacial, interglacial, and transitional periods. To that end, we have joined the large-scale, ... |
author |
Jocelyne Bourgeios Christian Zdanowicz David Burgess David Fisher David Lean Jiancheng Zheng Michael Krachler Roy Koerner William Shotyk |
author_facet |
Jocelyne Bourgeios Christian Zdanowicz David Burgess David Fisher David Lean Jiancheng Zheng Michael Krachler Roy Koerner William Shotyk |
author_sort |
Jocelyne Bourgeios |
title |
Paleo-perspectives on environmental change in the high Arctic: the Canadian Contribution |
title_short |
Paleo-perspectives on environmental change in the high Arctic: the Canadian Contribution |
title_full |
Paleo-perspectives on environmental change in the high Arctic: the Canadian Contribution |
title_fullStr |
Paleo-perspectives on environmental change in the high Arctic: the Canadian Contribution |
title_full_unstemmed |
Paleo-perspectives on environmental change in the high Arctic: the Canadian Contribution |
title_sort |
paleo-perspectives on environmental change in the high arctic: the canadian contribution |
publisher |
Borealis |
url |
https://hdl.handle.net/10864/10238 |
geographic |
Arctic Arctic Ocean Canada Greenland Nunavut |
geographic_facet |
Arctic Arctic Ocean Canada Greenland Nunavut |
genre |
Arctic Arctic Ocean Climate change Greenland ice core Ice Sheet IPY Nunavut |
genre_facet |
Arctic Arctic Ocean Climate change Greenland ice core Ice Sheet IPY Nunavut |
op_relation |
https://hdl.handle.net/10864/10238 |
_version_ |
1766315969825734656 |