Atmospheric circulation and precipitation in Italy for the last 50 years
Abstract 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 p...
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crwiley:10.1002/joc.805 2024-06-23T07:55:08+00:00 Atmospheric circulation and precipitation in Italy for the last 50 years Brunetti, Michele Maugeri, Maurizio Nanni, Teresa 2002 http://dx.doi.org/10.1002/joc.805 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjoc.805 https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1002/joc.805 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor International Journal of Climatology volume 22, issue 12, page 1455-1471 ISSN 0899-8418 1097-0088 journal-article 2002 crwiley https://doi.org/10.1002/joc.805 2024-06-13T04:23:22Z Abstract 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. Copyright © 2002 Royal Meteorological Society. Article in Journal/Newspaper North Atlantic North Atlantic oscillation Wiley Online Library International Journal of Climatology 22 12 1455 1471 |
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Open Polar |
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Wiley Online Library |
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English |
description |
Abstract 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. Copyright © 2002 Royal Meteorological Society. |
format |
Article in Journal/Newspaper |
author |
Brunetti, Michele Maugeri, Maurizio Nanni, Teresa |
spellingShingle |
Brunetti, Michele Maugeri, Maurizio Nanni, Teresa Atmospheric circulation and precipitation in Italy for the last 50 years |
author_facet |
Brunetti, Michele Maugeri, Maurizio Nanni, Teresa |
author_sort |
Brunetti, Michele |
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://dx.doi.org/10.1002/joc.805 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjoc.805 https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1002/joc.805 |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_source |
International Journal of Climatology volume 22, issue 12, page 1455-1471 ISSN 0899-8418 1097-0088 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
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_ |
1802647579745320960 |