Characterization of atmospheric aerosols at Monte Cimone, Italy, during summer 2004: source apportionment and transport mechanisms

In this paper we present a study on stratospheric intrusion (SI) events recorded at a high mountain station in the Italian northern Apennines. Six years (1998–2003) of surface ozone and beryllium-7 concentration measurements as well as relative humidity values recorded at the GAW Mt. Cimone research station (44°11'N, 10°42'E; 2165 m asl) were analyzed. Moreover, three-dimensional backward trajectories calculated by the FLEXTRA model and potential vorticity values along these trajectories were used. In order to identify SI and evaluate their contribution to the tropospheric ozone at Mt. Cimone, a statistical methodology was developed. This methodology consists of different selection criteria based on observed and modeled stratospheric tracers as well as on tropopause height values recorded by radio soundings. On average, SI effects affected Mt. Cimone for about 36 days/year. The obtained 6-year SI climatology showed a clear seasonal cycle with a winter maximum and a spring-summer minimum. The seasonal cycle was also characterized by an interannual variation. In particular, during winter (autumn), SI frequency could be related to the intensity of the positive (negative) NAO phase. In order to separate direct SI from indirect SI, a restrictive selection criterion was set. This criterion, named Direct Intrusion Criterion (DIC), requested that all the analyzed tracers were characterized by stratospheric values. Direct SI affected Mt. Cimone for about 6 days/year, with frequency peaks in winter and early summer. At Mt. Cimone, SI contribution to background ozone concentrations was largest in winter. On average, an ozone increase of 8% (3%) with respect to the monthly running mean was found during direct (indirect) SI. Finally, the typical variations of stratospheric tracers during SI events were analyzed. The analysis of in situ atmospheric pressure values suggested that direct SI were connected with intense fronts affecting the region, while indirect SI were possibly connected with subsiding structures related with anticyclonic areas.
 
Citation proposal
American Geophysical Union (AGU) - Paolo Cristofanelli (Institute of Atmospheric Sciences and Climate (ISAC) - CNR) - Paolo Bonasoni (Institute of Atmospheric Sciences and Climate (ISAC) - CNR) - Francesco Calzolari (Institute of Atmospheric Sciences and Climate (ISAC) - CNR) - Franco Marenco (Physics Department, University of Genoa and Istituto Nazionale di Fisica Nucleare-Genova) - A. D'Alessandro (Physics Department, University of Genoa and Istituto Nazionale di Fisica Nucleare-Genova,) - F. Mazzei (Physics Department, University of Genoa and Istituto Nazionale di Fisica Nucleare-Genova,) - Paolo Prati (Physics Department, University of Genoa and Istituto Nazionale di Fisica Nucleare-Genova,) - Massimo Chiari (Physics Department, University of Florence and Istituto Nazionale di Fisica Nucleare-Firenze) - Franco Lucarelli (Physics Department, University of Florence and Istituto Nazionale di Fisica Nucleare-Firenze) - Silvia Nava (Physics Department, University of Florence and Istituto Nazionale di Fisica Nucleare-Firenze) - Paola Fermo (Inorganic, Metallorganic and Analytical Chemistry Department, University of Milan,) - Andrea Piazzalunga (University of Milano-Bicocca,Faculty of Mathematics, Physics and Natural Sciences) - G.Valli (Physics Department, University of Milano and Istituto Nazionale di Fisica Nucleare-Milano) - Roberta Vecchi (Physics Department, University of Milano and Istituto Nazionale di Fisica Nucleare-Milano) (2006) . Characterization of atmospheric aerosols at Monte Cimone, Italy, during summer 2004: source apportionment and transport mechanisms. https://geoportal.mountaingenius.org/geonetwork/srv/api/records/930108e1-3560-48af-bf40-d8686551f22f
 

Simple

Alternate title
Date ( Publication )
2006-12-16T00:00:00
Edition
Presentation form
Hardcopy document
Presentation form
Digital document
Name
JOURNAL OF GEOPHYSICAL RESEARCH, VOL. 111
Issue identification
D24202
Page
15 PP
Other citation details
JOURNAL OF GEOPHYSICAL RESEARCH, VOL. 111, D24202, 15 PP., 2006 doi:10.1029/2006JD007145
Collective title
J. Geophys. Res., 111(D24202), 15 PP,2006.
ISBN
ISSN
0148-0227
Purpose
Status
Completed

  Author

  +1 2023280566 
Website
http://www.agu.org  

  Author

  +39 0516399652 
Website
www.isac.cnr.it  

  Author

  +39 0516399652 
Website
www.isac.cnr.it  

  Author

Website
www.isac.cnr.it  

  Author

Website
http://www.fisica.unige.it/difi/  

  Author

Website
http://www.fisica.unige.it/difi/  

  Author

  +39 010314218 
Website
http://www.fisica.unige.it/difi/  

  Author

Website
http://www.ge.infn.it/~prati/  

  Author

  +39 0554572641 
Website
http://labec.fi.infn.it/  

  Author

Website
http://labec.fi.infn.it  

  Author

Website
http://labec.fi.infn.it  

  Author

Website
www.chimica.unimi.it  

  Author

Website
http://www.scienze.unimib.it/  

  Author

Website
http://www.fisica.unimi.it/  

  Author

  +39 0250317496 
Website
http://www.fisica.unimi.it/  
Maintenance and update frequency
As needed
Keywords ( Theme )
  • SHARE
Keywords
  • PM10 , PM1 , source apportionment , aerosol composition , back trajectories , Saharan dust transport
Keywords ( Place )
  • Mt. Cimone
Access constraints
Copyright
Use constraints
Copyright
Other constraints
Metadata language
eng
Character set
UTF8
Topic category
  • Climatology, meteorology, atmosphere
  • Environment
N
S
E
W


Distribution format
  • ( )

OnLine resource
Abstract:"Characterization of atmospheric aerosols at Monte Cimone, Italy, during summer 2004: source apportionment and transport mechanisms."  

Abstract:"Characterization of atmospheric aerosols at Monte Cimone, Italy, during summer 2004: source apportionment and transport mechanisms."

OnLine resource
cimone.pdf  

Full text(pdf):""Characterization of atmospheric aerosols at Monte Cimone, Italy, during summer 2004: source apportionment and transport mechanisms"

Hierarchy level
Series
Dataset
Statement

"Characterization of atmospheric aerosols at Monte Cimone, Italy, during summer 2004: Source apportionment and transport mechanisms"

JOURNAL OF GEOPHYSICAL RESEARCH, VOL. 111, D24202, 15 PP., 2006.

Marenco, F., Bonasoni, P., Calzolari, F., Ceriani, M., Chiari, M., Cristofanelli, P., D’Alessandro, A., Fermo, P., Lucarelli, F., Mazzei, F., Nava, S., Piazzalunga, A., Prati, P., Valli, G., Vecchi, R.

gmd:MD_Metadata

File identifier
930108e1-3560-48af-bf40-d8686551f22f   XML
Metadata language
eng
Character set
UTF8
Date stamp
2012-03-07T18:23:59
Metadata standard name
ISO 19115:2003/19139
Metadata standard version
1.0

  Point of contact

  +39 035 3230551 
Website
http://www.evk2cnr.org/  
 
 

  Overviews

thumbnail

  Provided by

  Share on social sites

         

  Views

Read here the full details and access to the data.

  Associated resources

Not available