Ozone, aerosol, potential vorticity, and trace gas trends observed at high-latitudes over North America from February to May 2000
Ozone (O3) and aerosol scattering ratio profiles were obtained from airborne lidar measurements on thirty-eight flights over seven deployments covering the latitudes of 40°–85°N between 4 February and 23 May 2000 as part of the Tropospheric Ozone Production about the Spring Equinox (TOPSE) field exp...
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ftuninhampshire:oai:scholars.unh.edu:earthsci_facpub-1166 2023-05-15T15:12:16+02:00 Ozone, aerosol, potential vorticity, and trace gas trends observed at high-latitudes over North America from February to May 2000 Browell, Edward V Hair, Jonathan Butler, Carolyn Grant, William B DeYoung, Russell J Fenn, Marta Brackett, Vincent G Clayton, Marian B Brasseur, Lorraine A Harper, David B Ridley, Brian Klonecki, Andrzej Hess, Peter Emmons, L K Tie, Xuexi Atlas, Elliot Cantrell, C A Wimmers, Anthony Blake, D R Coffey, Michael T Hannigan, James W Dibb, Jack E. Talbot, R. Flocke, F Weinheimer, Andrew Fried, A Wert, B Snow, J Lefer, Barry 2003-01-01T08:00:00Z application/pdf https://scholars.unh.edu/earthsci_facpub/167 https://scholars.unh.edu/cgi/viewcontent.cgi?article=1166&context=earthsci_facpub unknown University of New Hampshire Scholars' Repository https://scholars.unh.edu/earthsci_facpub/167 https://scholars.unh.edu/cgi/viewcontent.cgi?article=1166&context=earthsci_facpub Copyright 2003 by the American Geophysical Union. Earth Sciences Scholarship ozone aerosols springtime Arctic trends Atmospheric Sciences text 2003 ftuninhampshire 2023-01-30T21:34:30Z Ozone (O3) and aerosol scattering ratio profiles were obtained from airborne lidar measurements on thirty-eight flights over seven deployments covering the latitudes of 40°–85°N between 4 February and 23 May 2000 as part of the Tropospheric Ozone Production about the Spring Equinox (TOPSE) field experiment. Each deployment started from Broomfield, Colorado, with bases in Churchill, Canada, and on most deployments, Thule Air Base, Greenland. Nadir and zenith lidar O3 measurements were combined with in situ O3measurements to produce vertically continuous O3 profiles from near the surface to above the tropopause. Potential vorticity (PV) distributions along the flight track were obtained from several different meteorological analyses. Ozone, aerosol, and PV distributions were used together to identify the presence of pollution plumes and stratospheric intrusions. Ozone was found to increase in the middle free troposphere (4–6 km) at high latitudes (60°–85°N) by an average of 4.6 ppbv/mo (parts per billion by volume per month) from about 54 ppbv in early February to over 72 ppbv in mid-May. The average aerosol scattering ratios at 1064 nm in the same region increased rapidly at an average rate of 0.36/mo from about 0.38 to over 1.7. Ozone and aerosol scattering were highly correlated over the entire field experiment, and PV and beryllium (7Be) showed no significant positive trend over the same period. The primary cause of the observed O3 increase in the mid troposphere at high latitudes was determined to be the photochemical production of O3 in pollution plumes with less than 20% of the increase from stratospherically-derived O3. Text Arctic Greenland Thule Air Thule Air Base Thule Tropospheric Ozone Production About the Spring Equinox University of New Hampshire: Scholars Repository Arctic Canada Greenland Thule Air Base ENVELOPE(-68.703,-68.703,76.531,76.531) |
institution |
Open Polar |
collection |
University of New Hampshire: Scholars Repository |
op_collection_id |
ftuninhampshire |
language |
unknown |
topic |
ozone aerosols springtime Arctic trends Atmospheric Sciences |
spellingShingle |
ozone aerosols springtime Arctic trends Atmospheric Sciences Browell, Edward V Hair, Jonathan Butler, Carolyn Grant, William B DeYoung, Russell J Fenn, Marta Brackett, Vincent G Clayton, Marian B Brasseur, Lorraine A Harper, David B Ridley, Brian Klonecki, Andrzej Hess, Peter Emmons, L K Tie, Xuexi Atlas, Elliot Cantrell, C A Wimmers, Anthony Blake, D R Coffey, Michael T Hannigan, James W Dibb, Jack E. Talbot, R. Flocke, F Weinheimer, Andrew Fried, A Wert, B Snow, J Lefer, Barry Ozone, aerosol, potential vorticity, and trace gas trends observed at high-latitudes over North America from February to May 2000 |
topic_facet |
ozone aerosols springtime Arctic trends Atmospheric Sciences |
description |
Ozone (O3) and aerosol scattering ratio profiles were obtained from airborne lidar measurements on thirty-eight flights over seven deployments covering the latitudes of 40°–85°N between 4 February and 23 May 2000 as part of the Tropospheric Ozone Production about the Spring Equinox (TOPSE) field experiment. Each deployment started from Broomfield, Colorado, with bases in Churchill, Canada, and on most deployments, Thule Air Base, Greenland. Nadir and zenith lidar O3 measurements were combined with in situ O3measurements to produce vertically continuous O3 profiles from near the surface to above the tropopause. Potential vorticity (PV) distributions along the flight track were obtained from several different meteorological analyses. Ozone, aerosol, and PV distributions were used together to identify the presence of pollution plumes and stratospheric intrusions. Ozone was found to increase in the middle free troposphere (4–6 km) at high latitudes (60°–85°N) by an average of 4.6 ppbv/mo (parts per billion by volume per month) from about 54 ppbv in early February to over 72 ppbv in mid-May. The average aerosol scattering ratios at 1064 nm in the same region increased rapidly at an average rate of 0.36/mo from about 0.38 to over 1.7. Ozone and aerosol scattering were highly correlated over the entire field experiment, and PV and beryllium (7Be) showed no significant positive trend over the same period. The primary cause of the observed O3 increase in the mid troposphere at high latitudes was determined to be the photochemical production of O3 in pollution plumes with less than 20% of the increase from stratospherically-derived O3. |
format |
Text |
author |
Browell, Edward V Hair, Jonathan Butler, Carolyn Grant, William B DeYoung, Russell J Fenn, Marta Brackett, Vincent G Clayton, Marian B Brasseur, Lorraine A Harper, David B Ridley, Brian Klonecki, Andrzej Hess, Peter Emmons, L K Tie, Xuexi Atlas, Elliot Cantrell, C A Wimmers, Anthony Blake, D R Coffey, Michael T Hannigan, James W Dibb, Jack E. Talbot, R. Flocke, F Weinheimer, Andrew Fried, A Wert, B Snow, J Lefer, Barry |
author_facet |
Browell, Edward V Hair, Jonathan Butler, Carolyn Grant, William B DeYoung, Russell J Fenn, Marta Brackett, Vincent G Clayton, Marian B Brasseur, Lorraine A Harper, David B Ridley, Brian Klonecki, Andrzej Hess, Peter Emmons, L K Tie, Xuexi Atlas, Elliot Cantrell, C A Wimmers, Anthony Blake, D R Coffey, Michael T Hannigan, James W Dibb, Jack E. Talbot, R. Flocke, F Weinheimer, Andrew Fried, A Wert, B Snow, J Lefer, Barry |
author_sort |
Browell, Edward V |
title |
Ozone, aerosol, potential vorticity, and trace gas trends observed at high-latitudes over North America from February to May 2000 |
title_short |
Ozone, aerosol, potential vorticity, and trace gas trends observed at high-latitudes over North America from February to May 2000 |
title_full |
Ozone, aerosol, potential vorticity, and trace gas trends observed at high-latitudes over North America from February to May 2000 |
title_fullStr |
Ozone, aerosol, potential vorticity, and trace gas trends observed at high-latitudes over North America from February to May 2000 |
title_full_unstemmed |
Ozone, aerosol, potential vorticity, and trace gas trends observed at high-latitudes over North America from February to May 2000 |
title_sort |
ozone, aerosol, potential vorticity, and trace gas trends observed at high-latitudes over north america from february to may 2000 |
publisher |
University of New Hampshire Scholars' Repository |
publishDate |
2003 |
url |
https://scholars.unh.edu/earthsci_facpub/167 https://scholars.unh.edu/cgi/viewcontent.cgi?article=1166&context=earthsci_facpub |
long_lat |
ENVELOPE(-68.703,-68.703,76.531,76.531) |
geographic |
Arctic Canada Greenland Thule Air Base |
geographic_facet |
Arctic Canada Greenland Thule Air Base |
genre |
Arctic Greenland Thule Air Thule Air Base Thule Tropospheric Ozone Production About the Spring Equinox |
genre_facet |
Arctic Greenland Thule Air Thule Air Base Thule Tropospheric Ozone Production About the Spring Equinox |
op_source |
Earth Sciences Scholarship |
op_relation |
https://scholars.unh.edu/earthsci_facpub/167 https://scholars.unh.edu/cgi/viewcontent.cgi?article=1166&context=earthsci_facpub |
op_rights |
Copyright 2003 by the American Geophysical Union. |
_version_ |
1766342974158929920 |