Spatio-temporal variations of the atmospheric greenhouse gases and their sources and sinks in the Arctic region
To understand the spatio-temporal variations of the atmospheric greenhouse gases in the Arctic region, we have conducted systematic observations and numerical model simulations. Long-term observations for CO2, CH4 and related constituents at Ny-Ålesund helped in separating the oceanic and terrestria...
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ftnipr:oai:nipr.repo.nii.ac.jp:00016388 2023-05-15T14:43:53+02:00 Spatio-temporal variations of the atmospheric greenhouse gases and their sources and sinks in the Arctic region 2021-03 https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=16388 http://id.nii.ac.jp/1291/00016266/ en eng https://doi.org/10.1016/j.polar.2020.100553 https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=16388 http://id.nii.ac.jp/1291/00016266/ Polar Science, 100553(2021-03) 18739652 Arctic Greenhouse gas Carbon dioxide Methane Journal Article 2021 ftnipr https://doi.org/10.1016/j.polar.2020.100553 2022-12-03T19:43:16Z To understand the spatio-temporal variations of the atmospheric greenhouse gases in the Arctic region, we have conducted systematic observations and numerical model simulations. Long-term observations for CO2, CH4 and related constituents at Ny-Ålesund helped in separating the oceanic and terrestrial uptake rates of CO2 and revealed the importance of biogenic CH4 emissions to atmospheric CH4 variations. Shipboard observations of atmospheric CH4 in the Arctic Ocean indicated several peaks associated with long-range transports of the continental source signals. An underestimation of climatological O2 flux is demonstrated by the shipboard O2/N2 observations over the North Pacific and Arctic Sea. Clear seasonal cycles and long-term trends of the greenhouse gases were observed in the upper troposphere and lower stratosphere over the Eurasian continent at 8.5–12.5 km in altitude. Forward and inverse modeling studies and direct observations of CH4 emission from West Siberian wetlands were conducted to evaluate the CH4 fluxes estimated by previous bottom-up studies. To be consistent with the atmospheric CH4 observations, the prescribed CH4 emission needs downward and upward revisions at Hudson Bay Lowland and West Siberia, respectively. The terrestrial ecosystem model study showed increasing trends in the CH4 emission in inland North America, Alaska and northern part of West Siberian Lowland. Article in Journal/Newspaper Arctic Arctic Ocean Hudson Bay Ny Ålesund Ny-Ålesund Polar Science Polar Science Alaska Siberia National Institute of Polar Research Repository, Japan Arctic Arctic Ocean Ny-Ålesund Hudson Bay Pacific Hudson Polar Science 27 100553 |
institution |
Open Polar |
collection |
National Institute of Polar Research Repository, Japan |
op_collection_id |
ftnipr |
language |
English |
topic |
Arctic Greenhouse gas Carbon dioxide Methane |
spellingShingle |
Arctic Greenhouse gas Carbon dioxide Methane Spatio-temporal variations of the atmospheric greenhouse gases and their sources and sinks in the Arctic region |
topic_facet |
Arctic Greenhouse gas Carbon dioxide Methane |
description |
To understand the spatio-temporal variations of the atmospheric greenhouse gases in the Arctic region, we have conducted systematic observations and numerical model simulations. Long-term observations for CO2, CH4 and related constituents at Ny-Ålesund helped in separating the oceanic and terrestrial uptake rates of CO2 and revealed the importance of biogenic CH4 emissions to atmospheric CH4 variations. Shipboard observations of atmospheric CH4 in the Arctic Ocean indicated several peaks associated with long-range transports of the continental source signals. An underestimation of climatological O2 flux is demonstrated by the shipboard O2/N2 observations over the North Pacific and Arctic Sea. Clear seasonal cycles and long-term trends of the greenhouse gases were observed in the upper troposphere and lower stratosphere over the Eurasian continent at 8.5–12.5 km in altitude. Forward and inverse modeling studies and direct observations of CH4 emission from West Siberian wetlands were conducted to evaluate the CH4 fluxes estimated by previous bottom-up studies. To be consistent with the atmospheric CH4 observations, the prescribed CH4 emission needs downward and upward revisions at Hudson Bay Lowland and West Siberia, respectively. The terrestrial ecosystem model study showed increasing trends in the CH4 emission in inland North America, Alaska and northern part of West Siberian Lowland. |
format |
Article in Journal/Newspaper |
title |
Spatio-temporal variations of the atmospheric greenhouse gases and their sources and sinks in the Arctic region |
title_short |
Spatio-temporal variations of the atmospheric greenhouse gases and their sources and sinks in the Arctic region |
title_full |
Spatio-temporal variations of the atmospheric greenhouse gases and their sources and sinks in the Arctic region |
title_fullStr |
Spatio-temporal variations of the atmospheric greenhouse gases and their sources and sinks in the Arctic region |
title_full_unstemmed |
Spatio-temporal variations of the atmospheric greenhouse gases and their sources and sinks in the Arctic region |
title_sort |
spatio-temporal variations of the atmospheric greenhouse gases and their sources and sinks in the arctic region |
publishDate |
2021 |
url |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=16388 http://id.nii.ac.jp/1291/00016266/ |
geographic |
Arctic Arctic Ocean Ny-Ålesund Hudson Bay Pacific Hudson |
geographic_facet |
Arctic Arctic Ocean Ny-Ålesund Hudson Bay Pacific Hudson |
genre |
Arctic Arctic Ocean Hudson Bay Ny Ålesund Ny-Ålesund Polar Science Polar Science Alaska Siberia |
genre_facet |
Arctic Arctic Ocean Hudson Bay Ny Ålesund Ny-Ålesund Polar Science Polar Science Alaska Siberia |
op_relation |
https://doi.org/10.1016/j.polar.2020.100553 https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=16388 http://id.nii.ac.jp/1291/00016266/ Polar Science, 100553(2021-03) 18739652 |
op_doi |
https://doi.org/10.1016/j.polar.2020.100553 |
container_title |
Polar Science |
container_volume |
27 |
container_start_page |
100553 |
_version_ |
1766315463887814656 |