B.: Identification of regional sources of methyl bromide and methyl iodide from AGAGE observations at Cape
Abstract. There are large uncertainties in identifying and quantifying the globally significant sources and sinks of methyl bromide (CH3Br) and methyl iodide (CH3I). Long-term, quasi-continuous ob-servations can provide valuable information about their regional sources, which may be significant in t...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.475.2000 2023-05-15T18:25:37+02:00 B.: Identification of regional sources of methyl bromide and methyl iodide from AGAGE observations at Cape M. L. Cox G. A. Sturrock P. J. Fraser S. T. Siems P. B. Krummel The Pennsylvania State University CiteSeerX Archives 2005 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.475.2000 http://www.environmental-expert.com/Files%5C6063%5Carticles%5C5027%5CT46P742XQ464523P.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.475.2000 http://www.environmental-expert.com/Files%5C6063%5Carticles%5C5027%5CT46P742XQ464523P.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.environmental-expert.com/Files%5C6063%5Carticles%5C5027%5CT46P742XQ464523P.pdf Key words AGAGE annual cycle baseline data Cape Grim Baseline Air Pollution Station coastal source regions text 2005 ftciteseerx 2016-01-08T07:32:17Z Abstract. There are large uncertainties in identifying and quantifying the globally significant sources and sinks of methyl bromide (CH3Br) and methyl iodide (CH3I). Long-term, quasi-continuous ob-servations can provide valuable information about their regional sources, which may be significant in the global context. We report 3 years of in situ observations of these trace gases from the AGAGE (Advanced Global Atmospheric Gas Experiment) program at Cape Grim, Tasmania (41 ◦S, 145 ◦E). The average background levels of CH3Br and CH3I during March 1998–March 2001 were 8.05 and 1.39 ppt (dry air mole fractions expressed in parts per 1012), respectively. The CH3Br background data showed little seasonal variability. Trajectory analyses reveal that air masses showing elevated CH3Br levels at Cape Grim have had significant contact with coastal-terrestrial and/or coastal-seawater and/or urban source regions. The CH3I background data showed a seasonal cycle with a 3-year average am-plitude of 0.47 ppt and maximum concentrations in summer, suggesting that the Southern Ocean is a significant source. Trajectory analyses reveal that air masses showing highly elevated CH3I levels at Cape Grim have had significant contact with coastal-terrestrial and/or coastal-seawater regions and/or the open-ocean regions of Bass Strait and the Tasman Sea. Text Southern Ocean Unknown Grim ENVELOPE(-64.486,-64.486,-65.379,-65.379) Southern Ocean |
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Open Polar |
collection |
Unknown |
op_collection_id |
ftciteseerx |
language |
English |
topic |
Key words AGAGE annual cycle baseline data Cape Grim Baseline Air Pollution Station coastal source regions |
spellingShingle |
Key words AGAGE annual cycle baseline data Cape Grim Baseline Air Pollution Station coastal source regions M. L. Cox G. A. Sturrock P. J. Fraser S. T. Siems P. B. Krummel B.: Identification of regional sources of methyl bromide and methyl iodide from AGAGE observations at Cape |
topic_facet |
Key words AGAGE annual cycle baseline data Cape Grim Baseline Air Pollution Station coastal source regions |
description |
Abstract. There are large uncertainties in identifying and quantifying the globally significant sources and sinks of methyl bromide (CH3Br) and methyl iodide (CH3I). Long-term, quasi-continuous ob-servations can provide valuable information about their regional sources, which may be significant in the global context. We report 3 years of in situ observations of these trace gases from the AGAGE (Advanced Global Atmospheric Gas Experiment) program at Cape Grim, Tasmania (41 ◦S, 145 ◦E). The average background levels of CH3Br and CH3I during March 1998–March 2001 were 8.05 and 1.39 ppt (dry air mole fractions expressed in parts per 1012), respectively. The CH3Br background data showed little seasonal variability. Trajectory analyses reveal that air masses showing elevated CH3Br levels at Cape Grim have had significant contact with coastal-terrestrial and/or coastal-seawater and/or urban source regions. The CH3I background data showed a seasonal cycle with a 3-year average am-plitude of 0.47 ppt and maximum concentrations in summer, suggesting that the Southern Ocean is a significant source. Trajectory analyses reveal that air masses showing highly elevated CH3I levels at Cape Grim have had significant contact with coastal-terrestrial and/or coastal-seawater regions and/or the open-ocean regions of Bass Strait and the Tasman Sea. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
M. L. Cox G. A. Sturrock P. J. Fraser S. T. Siems P. B. Krummel |
author_facet |
M. L. Cox G. A. Sturrock P. J. Fraser S. T. Siems P. B. Krummel |
author_sort |
M. L. Cox |
title |
B.: Identification of regional sources of methyl bromide and methyl iodide from AGAGE observations at Cape |
title_short |
B.: Identification of regional sources of methyl bromide and methyl iodide from AGAGE observations at Cape |
title_full |
B.: Identification of regional sources of methyl bromide and methyl iodide from AGAGE observations at Cape |
title_fullStr |
B.: Identification of regional sources of methyl bromide and methyl iodide from AGAGE observations at Cape |
title_full_unstemmed |
B.: Identification of regional sources of methyl bromide and methyl iodide from AGAGE observations at Cape |
title_sort |
b.: identification of regional sources of methyl bromide and methyl iodide from agage observations at cape |
publishDate |
2005 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.475.2000 http://www.environmental-expert.com/Files%5C6063%5Carticles%5C5027%5CT46P742XQ464523P.pdf |
long_lat |
ENVELOPE(-64.486,-64.486,-65.379,-65.379) |
geographic |
Grim Southern Ocean |
geographic_facet |
Grim Southern Ocean |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_source |
http://www.environmental-expert.com/Files%5C6063%5Carticles%5C5027%5CT46P742XQ464523P.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.475.2000 http://www.environmental-expert.com/Files%5C6063%5Carticles%5C5027%5CT46P742XQ464523P.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766207194616823808 |