 |
| Titel |
Intercontinental transport of tropospheric ozone: a study of its seasonal variability across the North Atlantic utilizing tropospheric ozone residuals and its relationship to the North Atlantic Oscillation |
| VerfasserIn |
J. K. Creilson, J. Fishman, A. E. Wozniak |
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| ISSN |
1680-7316
|
| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Chemistry and Physics ; 3, no. 6 ; Nr. 3, no. 6 (2003-11-25), S.2053-2066 |
| Datensatznummer |
250001340
|
| Publikation (Nr.) |
 copernicus.org/acp-3-2053-2003.pdf |
|
|
|
|
|
| Zusammenfassung |
| Using the empirically-corrected tropospheric ozone residual (TOR) technique, which
utilizes coincident observations of total ozone from the Total Ozone Mapping
Spectrometer (TOMS) and stratospheric ozone profiles from the Solar Backscattered
Ultraviolet (SBUV) instruments, the seasonal and regional distribution of tropospheric
ozone across the North Atlantic from 1979-2000 is examined. Its relationship to the
North Atlantic Oscillation (NAO) is also analyzed as a possible transport mechanism
across the North Atlantic. Monthly climatologies of tropospheric ozone for five different
regions across the North Atlantic exhibit strong seasonality. The correlation between
these monthly climatologies of the TOR and ozonesonde profiles at nearby sites in both
eastern North America and western Europe are highly significant (R values of +0.98 and
+0.96 respectively) and help to validate the use of satellite retrievals of tropospheric
ozone. Distinct springtime interannual variability over North Atlantic Region 5 (eastern
North Atlantic-western Europe) is particularly evident and exhibits similar variability to
the positive phase of the NAO (R=+0.61, r=<0.01). Positive phases of the NAO are
indicative of a stronger Bermuda-Azores high and a stronger Icelandic low and thus
faster more zonal flow across the North Atlantic from west to east. This flow regime
appears to be causing the transport of tropospheric ozone across the North Atlantic and
onto Europe. The consequence of such transport is the impact on a downwind region's
ability to meet their ozone attainment goals. This link between the positive phase of the
NAO and increased tropospheric ozone over Region 5 could be an important tool for
prediction of such pollution outbreaks. |
| |
|
| Teil von |
|
|
|
|
|
|
|