Atmos. Chem. Phys. Discuss., 9, 13999-14022, 2009
www.atmos-chem-phys-discuss.net/9/13999/2009/
doi:10.5194/acpd-9-13999-2009
© Author(s) 2009. This work is distributed
under the Creative Commons Attribution 3.0 License.
Review Status
This discussion paper has been under review for the journal Atmospheric Chemistry and Physics (ACP). Please refer to the corresponding final paper in ACP.
On the distribution of formaldehyde in the western Po-Valley, Italy, during FORMAT 2002/2003
W. Junkermann
Forschungszentrum Karlsruhe, Institut für Meteorologie und Klimaforschung, IMK-IFU, Kreuzeckbahnstr. 19, 82467 Garmisch-Partenkirchen, Germany

Abstract. Formaldehyde was measured in the area of Milano, Italy, during the 2002 and 2003 FORMAT campaigns at three ground field sites and from an ultralight aircraft. The horizontal distributions show a strong impact of local emissions at a site in the centre of Milano and more photochemically driven diurnal patterns in the remote locations north and south of the city. The mixing ratios in the agricultural areas upwind of Milano were comparable to those downwind indicating the importance of biogenic emissions and anthropogenic agricultural activities. The vertical distributions were dominated by transport processes with advection of CH2O above the planetary boundary layer by cloud venting. Comparison to model calculations show discrepancies in the diurnal patterns and regional distribution which allude to uncertainties in emission inventories.

Citation: Junkermann, W.: On the distribution of formaldehyde in the western Po-Valley, Italy, during FORMAT 2002/2003, Atmos. Chem. Phys. Discuss., 9, 13999-14022, doi:10.5194/acpd-9-13999-2009, 2009.
 
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