Intercontinental transport of pollution manifested in the variability and seasonal trend of springtime O3 at northern middle and high latitudes
Observations (0–8 km) from the Tropospheric Ozone Production about the Spring Equinox (TOPSE) experiment are analyzed to examine air masses contributing to the observed variability of springtime O3 and its seasonal increase at 40°–85°N over North America. Factor analysis using the positive matrix fa...
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2003
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ftuninhampshire:oai:scholars.unh.edu:earthsci_facpub-1133 2023-05-15T15:17:29+02:00 Intercontinental transport of pollution manifested in the variability and seasonal trend of springtime O3 at northern middle and high latitudes Wang, Yuhang Shim, Changsub Blake, Nicola J Blake, D R Choi, Yunsoo Ridley, Brian Dibb, Jack E. Wimmers, Anthony Moody, Jennie Flocke, F Weinheimer, Andrew Talbot, R. Atlas, Elliot 2003-11-16T08:00:00Z application/pdf https://scholars.unh.edu/earthsci_facpub/134 https://scholars.unh.edu/cgi/viewcontent.cgi?article=1133&context=earthsci_facpub unknown University of New Hampshire Scholars' Repository https://scholars.unh.edu/earthsci_facpub/134 https://scholars.unh.edu/cgi/viewcontent.cgi?article=1133&context=earthsci_facpub Copyright 2003 by the American Geophysical Union. Earth Sciences Scholarship TOPSE springtime tropospheric ozone stratospheric ozone source Atmospheric Sciences text 2003 ftuninhampshire 2023-01-30T21:34:20Z Observations (0–8 km) from the Tropospheric Ozone Production about the Spring Equinox (TOPSE) experiment are analyzed to examine air masses contributing to the observed variability of springtime O3 and its seasonal increase at 40°–85°N over North America. Factor analysis using the positive matrix factorization and principal component analysis methods is applied to the data set with 14 chemical tracers (O3, NOy, PAN, CO, CH4, C2H2, C3H8, CH3Cl, CH3Br, C2Cl4, CFC-11, HCFC-141B, Halon-1211, and 7Be) and one dynamic tracer (potential temperature). Our analysis results are biased by the measurements at 5–8 km (70% of the data) due to the availability of 7Be measurements. The identified tracer characteristics for seven factors are generally consistent with the geographical origins derived from their 10 day back trajectories. Stratospherically influenced air accounts for 14 ppbv (35–40%) of the observed O3 variability for data with O3concentrations <100 ppbv at middle and high latitudes. It accounts for about 2.5 ppbv/month (40%) of the seasonal O3 trend at midlatitudes but for only 0.8 ppbv/month (<20%) at high latitudes, likely reflecting more vigorous midlatitude dynamical systems in spring. At midlatitudes, reactive nitrogen-rich air masses transported through Asia are much more significant (11 ppbv in variability and 3.5 ppbv/month in trend) than other tropospheric contributors. At high latitudes the O3 variability is significantly influenced by air masses transported from lower latitudes (11 ppbv), which are poor in reactive nitrogen. The O3 trend, in contrast, is largely defined by air masses rich in reactive nitrogen transported through Asia and Europe across the Pacific or the Arctic (3 ppbv/month). The influence from the stratospheric source is more apparent at 6–8 km, while the effect of O3 production and transport within the troposphere is more apparent at lower altitudes. The overall effect of tropospheric photochemical production, through long-range transport, on the observed O3 variability and its ... Text Arctic Tropospheric Ozone Production About the Spring Equinox University of New Hampshire: Scholars Repository Arctic Pacific |
institution |
Open Polar |
collection |
University of New Hampshire: Scholars Repository |
op_collection_id |
ftuninhampshire |
language |
unknown |
topic |
TOPSE springtime tropospheric ozone stratospheric ozone source Atmospheric Sciences |
spellingShingle |
TOPSE springtime tropospheric ozone stratospheric ozone source Atmospheric Sciences Wang, Yuhang Shim, Changsub Blake, Nicola J Blake, D R Choi, Yunsoo Ridley, Brian Dibb, Jack E. Wimmers, Anthony Moody, Jennie Flocke, F Weinheimer, Andrew Talbot, R. Atlas, Elliot Intercontinental transport of pollution manifested in the variability and seasonal trend of springtime O3 at northern middle and high latitudes |
topic_facet |
TOPSE springtime tropospheric ozone stratospheric ozone source Atmospheric Sciences |
description |
Observations (0–8 km) from the Tropospheric Ozone Production about the Spring Equinox (TOPSE) experiment are analyzed to examine air masses contributing to the observed variability of springtime O3 and its seasonal increase at 40°–85°N over North America. Factor analysis using the positive matrix factorization and principal component analysis methods is applied to the data set with 14 chemical tracers (O3, NOy, PAN, CO, CH4, C2H2, C3H8, CH3Cl, CH3Br, C2Cl4, CFC-11, HCFC-141B, Halon-1211, and 7Be) and one dynamic tracer (potential temperature). Our analysis results are biased by the measurements at 5–8 km (70% of the data) due to the availability of 7Be measurements. The identified tracer characteristics for seven factors are generally consistent with the geographical origins derived from their 10 day back trajectories. Stratospherically influenced air accounts for 14 ppbv (35–40%) of the observed O3 variability for data with O3concentrations <100 ppbv at middle and high latitudes. It accounts for about 2.5 ppbv/month (40%) of the seasonal O3 trend at midlatitudes but for only 0.8 ppbv/month (<20%) at high latitudes, likely reflecting more vigorous midlatitude dynamical systems in spring. At midlatitudes, reactive nitrogen-rich air masses transported through Asia are much more significant (11 ppbv in variability and 3.5 ppbv/month in trend) than other tropospheric contributors. At high latitudes the O3 variability is significantly influenced by air masses transported from lower latitudes (11 ppbv), which are poor in reactive nitrogen. The O3 trend, in contrast, is largely defined by air masses rich in reactive nitrogen transported through Asia and Europe across the Pacific or the Arctic (3 ppbv/month). The influence from the stratospheric source is more apparent at 6–8 km, while the effect of O3 production and transport within the troposphere is more apparent at lower altitudes. The overall effect of tropospheric photochemical production, through long-range transport, on the observed O3 variability and its ... |
format |
Text |
author |
Wang, Yuhang Shim, Changsub Blake, Nicola J Blake, D R Choi, Yunsoo Ridley, Brian Dibb, Jack E. Wimmers, Anthony Moody, Jennie Flocke, F Weinheimer, Andrew Talbot, R. Atlas, Elliot |
author_facet |
Wang, Yuhang Shim, Changsub Blake, Nicola J Blake, D R Choi, Yunsoo Ridley, Brian Dibb, Jack E. Wimmers, Anthony Moody, Jennie Flocke, F Weinheimer, Andrew Talbot, R. Atlas, Elliot |
author_sort |
Wang, Yuhang |
title |
Intercontinental transport of pollution manifested in the variability and seasonal trend of springtime O3 at northern middle and high latitudes |
title_short |
Intercontinental transport of pollution manifested in the variability and seasonal trend of springtime O3 at northern middle and high latitudes |
title_full |
Intercontinental transport of pollution manifested in the variability and seasonal trend of springtime O3 at northern middle and high latitudes |
title_fullStr |
Intercontinental transport of pollution manifested in the variability and seasonal trend of springtime O3 at northern middle and high latitudes |
title_full_unstemmed |
Intercontinental transport of pollution manifested in the variability and seasonal trend of springtime O3 at northern middle and high latitudes |
title_sort |
intercontinental transport of pollution manifested in the variability and seasonal trend of springtime o3 at northern middle and high latitudes |
publisher |
University of New Hampshire Scholars' Repository |
publishDate |
2003 |
url |
https://scholars.unh.edu/earthsci_facpub/134 https://scholars.unh.edu/cgi/viewcontent.cgi?article=1133&context=earthsci_facpub |
geographic |
Arctic Pacific |
geographic_facet |
Arctic Pacific |
genre |
Arctic Tropospheric Ozone Production About the Spring Equinox |
genre_facet |
Arctic Tropospheric Ozone Production About the Spring Equinox |
op_source |
Earth Sciences Scholarship |
op_relation |
https://scholars.unh.edu/earthsci_facpub/134 https://scholars.unh.edu/cgi/viewcontent.cgi?article=1133&context=earthsci_facpub |
op_rights |
Copyright 2003 by the American Geophysical Union. |
_version_ |
1766347732632469504 |