Atmospheric circulation and precipitation in Italy for the last 50 years
Daily precipitation series from 75 Italian stations, for the period 1951-95, are clustered into six regions and the average is calculated for each area. For each average series, the seasonal and annual total precipitation and the number of wet days are calculated. The relationship between precipitat...
Published in: | International Journal of Climatology |
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Online Access: | http://hdl.handle.net/2434/16983 https://doi.org/10.1002/joc.805 |
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ftunivmilanoair:oai:air.unimi.it:2434/16983 2024-02-11T10:06:28+01:00 Atmospheric circulation and precipitation in Italy for the last 50 years M. Brunetti T. Nanni M. Maugeri M. Brunetti M. Maugeri T. Nanni 2002 http://hdl.handle.net/2434/16983 https://doi.org/10.1002/joc.805 eng eng Wiley info:eu-repo/semantics/altIdentifier/wos/WOS:000178958400003 volume:22 issue:12 firstpage:1455 lastpage:1471 journal:INTERNATIONAL JOURNAL OF CLIMATOLOGY http://hdl.handle.net/2434/16983 doi:10.1002/joc.805 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-0036802206 Air pressure Circulation indexe Italy Precipitation Trend analysi Wet days Settore FIS/06 - Fisica per il Sistema Terra e Il Mezzo Circumterrestre info:eu-repo/semantics/article 2002 ftunivmilanoair https://doi.org/10.1002/joc.805 2024-01-23T23:17:25Z Daily precipitation series from 75 Italian stations, for the period 1951-95, are clustered into six regions and the average is calculated for each area. For each average series, the seasonal and annual total precipitation and the number of wet days are calculated. The relationship between precipitation and atmospheric circulation is examined using correlation analysis. Atmospheric circulation is represented by five indexes: the well known North Atlantic oscillation index, a blocking frequency index, a Mediterranean oscillation index based on the 500 hPa geopotential record for Algiers, a Western European zonal circulation index (WEZCI) constructed from Madrid+Barcelona and Trondheim+Lund Surface pressure records, and a new Mediterranean circulation index (MCI) constructed from Marseille and Jerusalem Surface pressure records. All the indexes are calculated using monthly series; then seasonal and yearly averages are obtained. The indexes that show the most interesting correlation with total precipitation and number of wet days are WEZCI and MCI. Trend analysis of the index series gives evidence of a signal connected to a strong increase in winter air pressure in the Mediterranean area starting around 1980. Article in Journal/Newspaper North Atlantic North Atlantic oscillation The University of Milan: Archivio Istituzionale della Ricerca (AIR) International Journal of Climatology 22 12 1455 1471 |
institution |
Open Polar |
collection |
The University of Milan: Archivio Istituzionale della Ricerca (AIR) |
op_collection_id |
ftunivmilanoair |
language |
English |
topic |
Air pressure Circulation indexe Italy Precipitation Trend analysi Wet days Settore FIS/06 - Fisica per il Sistema Terra e Il Mezzo Circumterrestre |
spellingShingle |
Air pressure Circulation indexe Italy Precipitation Trend analysi Wet days Settore FIS/06 - Fisica per il Sistema Terra e Il Mezzo Circumterrestre M. Brunetti T. Nanni M. Maugeri Atmospheric circulation and precipitation in Italy for the last 50 years |
topic_facet |
Air pressure Circulation indexe Italy Precipitation Trend analysi Wet days Settore FIS/06 - Fisica per il Sistema Terra e Il Mezzo Circumterrestre |
description |
Daily precipitation series from 75 Italian stations, for the period 1951-95, are clustered into six regions and the average is calculated for each area. For each average series, the seasonal and annual total precipitation and the number of wet days are calculated. The relationship between precipitation and atmospheric circulation is examined using correlation analysis. Atmospheric circulation is represented by five indexes: the well known North Atlantic oscillation index, a blocking frequency index, a Mediterranean oscillation index based on the 500 hPa geopotential record for Algiers, a Western European zonal circulation index (WEZCI) constructed from Madrid+Barcelona and Trondheim+Lund Surface pressure records, and a new Mediterranean circulation index (MCI) constructed from Marseille and Jerusalem Surface pressure records. All the indexes are calculated using monthly series; then seasonal and yearly averages are obtained. The indexes that show the most interesting correlation with total precipitation and number of wet days are WEZCI and MCI. Trend analysis of the index series gives evidence of a signal connected to a strong increase in winter air pressure in the Mediterranean area starting around 1980. |
author2 |
M. Brunetti M. Maugeri T. Nanni |
format |
Article in Journal/Newspaper |
author |
M. Brunetti T. Nanni M. Maugeri |
author_facet |
M. Brunetti T. Nanni M. Maugeri |
author_sort |
M. Brunetti |
title |
Atmospheric circulation and precipitation in Italy for the last 50 years |
title_short |
Atmospheric circulation and precipitation in Italy for the last 50 years |
title_full |
Atmospheric circulation and precipitation in Italy for the last 50 years |
title_fullStr |
Atmospheric circulation and precipitation in Italy for the last 50 years |
title_full_unstemmed |
Atmospheric circulation and precipitation in Italy for the last 50 years |
title_sort |
atmospheric circulation and precipitation in italy for the last 50 years |
publisher |
Wiley |
publishDate |
2002 |
url |
http://hdl.handle.net/2434/16983 https://doi.org/10.1002/joc.805 |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000178958400003 volume:22 issue:12 firstpage:1455 lastpage:1471 journal:INTERNATIONAL JOURNAL OF CLIMATOLOGY http://hdl.handle.net/2434/16983 doi:10.1002/joc.805 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-0036802206 |
op_doi |
https://doi.org/10.1002/joc.805 |
container_title |
International Journal of Climatology |
container_volume |
22 |
container_issue |
12 |
container_start_page |
1455 |
op_container_end_page |
1471 |
_version_ |
1790604201432186880 |