 |
| Titel |
An investigation of ozone and planetary boundary layer dynamics over the complex topography of Grenoble combining measurements and modeling |
| VerfasserIn |
O. Couach, I. Balin, R. Jiménez, P. Ristori, S. Perego, F. Kirchner, V. Simeonov, B. Calpini, H. Bergh |
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| ISSN |
1680-7316
|
| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Chemistry and Physics ; 3, no. 3 ; Nr. 3, no. 3 (2003-05-27), S.549-562 |
| Datensatznummer |
250001031
|
| Publikation (Nr.) |
 copernicus.org/acp-3-549-2003.pdf |
|
|
|
|
|
| Zusammenfassung |
| This paper concerns an evaluation of ozone
(O3) and planetary boundary layer (PBL) dynamics over the complex topography of the Grenoble region through a combination of
measurements and mesoscale model (METPHOMOD) predictions for three days, during July
1999. The measurements of O3 and PBL structure were obtained with a Differential
Absorption Lidar (DIAL) system, situated 20 km south of Grenoble at Vif
(310 m ASL). The combined lidar observations and model calculations are in good agreement with atmospheric
measurements obtained with an instrumented aircraft (METAIR). Ozone fluxes were
calculated using lidar measurements of ozone vertical profiles concentrations and the
horizontal wind speeds measured with a Radar Doppler wind profiler (DEGREANE. The
ozone flux patterns indicate that the diurnal cycle of ozone production is controlled by local
thermal winds. The convective PBL maximum height was some 2700 m above the land
surface while the nighttime residual ozone layer was generally found between 1200 and
2200 m. Finally we evaluate the magnitude of the ozone processes at different altitudes in order to
estimate the photochemical ozone production due to the primary pollutants emissions of
Grenoble city and the regional network of automobile traffic. |
| |
|
| Teil von |
|
|
|
|
|
|
|
|