Analysis of climatic trends in data from the agrometeorological station of Bologna-Cadriano, Italy (1952–2007)

Matzneller, Philipp; Ventura, Francesc; Gaspari, Nicola; Pisa, Paola Rossi

doi:10.1007/s10584-009-9686-z

Cited by 23 publications

(14 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In agreement with our results, most of these studies show that the decline in rainfall is due to a significant decrease in the winter and spring seasons when there was an increase in total dry days, especially in winter (Brunetti et al 2002). Emilia-Romagna in the north of Italy (Pavan et al 2008) showed significant negative trends in these seasons and an analysis of the annual number of rainy days revealed a significant decrease from 1952 to 2007 in Bologna (Matzneller et al 2010).…”

Section: Discussionsupporting

confidence: 92%

Recent trends in seasonal and annual precipitation indices in Tuscany (Italy)

Bartolini¹,

Messeri

Grifoni

et al. 2013

Theor Appl Climatol

View full text Add to dashboard Cite

Global warming alters the hydrological cycle since a rise in temperature leads to an increase in the moistureholding capacity of the atmosphere at a rate of about 7 %/°C . This fact can influence the global, but also local characteristics of precipitation, such as total amount and intensity. Therefore, it is important to study changes in rainfall regime in regions with complex orography, like Tuscany, where there are strong spatial gradients in precipitation amounts. The aim of this study is to look for temporal change in precipitation from 1955 to 2007 searching for spatial differences. Daily data of 21 meteorological stations were analyzed to identify trends in seasonal and annual precipitation indices. Cluster analysis applied to principal components was applied to identify homogeneous groups of stations. A decrease in precipitation was observed at annual time scale, during winter and spring, especially in northwestern areas. Wet days highlighted a decrease in all of Tuscany, due to the same seasons. In northern Tuscany, the decrease in rainfall amount was mainly determined by a lower frequency of rainy events which in turn caused a decrease in the occurrence of extreme daily precipitation events (75th, 90th, and 95th percentile). In central-southern Tuscany, no significant changes were observed except for an increase in precipitation fraction, due to extreme events and in mean daily total amount for wet days. These results are consistent with recent findings for the Mediterranean area and confirm the usefulness of cluster analysis for the analysis of the spatial distribution of precipitation.

show abstract

Section: Discussionsupporting

confidence: 92%

Recent trends in seasonal and annual precipitation indices in Tuscany (Italy)

Bartolini¹,

Messeri

Grifoni

et al. 2013

Theor Appl Climatol

View full text Add to dashboard Cite

show abstract

“…The value of 0.1 mm, typically used as threshold in older studies, is often associated with issues related to instrument resolution and measurement accuracy (Brunetti et al, 2004b). In fact, only about 10% of the analysed articles considers a 0.1 mm threshold while recent studies use a 1 mm threshold in order to minimize the non-homogeneities of WDs detected with low thresholds (Brunetti et al, 2000(Brunetti et al, , 2002(Brunetti et al, , 2004bVentura et al, 2002;Cislaghi et al, 2005;Piccarreta et al, 2006;Fatichi and Caporali, 2009;Bodini and Cossu, 2010;Matzneller et al, 2010;Todeschini, 2012;Romano and Preziosi, 2013).…”

Section: Precipitation Indicesmentioning

confidence: 99%

A review of studies on observed precipitation trends in Italy

Caporali

Lompi

Pacetti

et al. 2020

Intl Journal of Climatology

View full text Add to dashboard Cite

Research to detect changes in precipitation variables has become a topic of particular interest to understand modifications in water resources availability. The review is focused on the Italian territory, outlining the "state of the art" of changes in precipitation regime through a review of 54 published studies on observed rainfall trend analyses, in the period 1999-2018. The aim is to combine a large body of knowledge in a single review and to explain the main patterns of rainfall changes occurred in Italy over the last decades. The analysis focused on the Total Precipitation (TP) and the number of Wet Days (WDs) indices at the annual and seasonal scale. A weight factor is introduced to take into account the differences among studies in geographical area, time series length, and number of stations. The review is accompanied by the discussion of other rainfall related variables, that is, precipitation intensity, extreme rainfall events and meteorological droughts, which are useful to provide a broader picture of rainfall changes. Overall, there is an agreement about the tendency of a decrease in wet days on the entire Italy, with limited discrepancies in the various regions. A decrease in wet days is accompanied by a negative trend (although less evident) in total precipitation, especially in winter. Nevertheless, a univocal direction of trends (or lack of thereof) in annual total precipitation and mostly hydrological extreme events is difficult to achieve.

show abstract

“…For areas in the central and eastern parts of the continent, spring trends are more important, because of an increase in air temperature and the early‐commencing FFS (Scheifinger et al , ; Auer et al , ; Jylhä et al , ; Goergen et al , ; Potop et al , ; Ustrnul et al , ). Regions under the influence of maritime air masses and the southern part of the continent recorded more pronounced changes in autumn (Matzneller et al , ; Fernández‐Montes and Rodrigo, ; Prior and Perry, ; Harding et al , ). Similar trends were observed by Auer et al () in the higher parts of the Alps, which confirms the oceanic character of mountain climate.…”

Section: Introductionmentioning

confidence: 99%

Spatial and temporal variability of the frost‐free season in Central Europe and its circulation background

Wypych

Ustrnul

Sulikowska

et al. 2016

Intl Journal of Climatology

View full text Add to dashboard Cite

The aim of the study was to investigate the temporal and spatial variability of last spring and first autumn frost events as well as the length of the frost‐free season (FFS) in Central Europe in relation to atmospheric circulation. Studies were conducted for the period 1951–2010 using gridded, daily minimum air temperature data obtained from the E‐OBS dataset at 0.25° spatial resolution. To assess the possible impact of air temperature variability on plants, late spring frost events and severe frost events were also examined with respect to the beginning of the thermal growing season. The role of atmospheric circulation was described using Grosswetterlagen circulation types and NAO index, and finally estimated using empirical orthogonal function analysis (EOF). The results confirm a significant increase in the length of the FFS, up to 10 days per decade in the western parts of Europe. This is mostly a result of earlier occurrence of last spring frost in the west up to 5 days. The occurrence of first autumn frost shows no significant trend in most of the studied regions. The obtained spatial pattern of the trends reflects oceanic (west) and continental (east) climatic conditions of the study area. Detailed analysis of circulation types favouring the occurrence of frost in Central Europe indicates that anti‐cyclonic situations are mainly responsible. EOF analyses for the springtime confirm that the first mode, which accounts for 56% of total variance, is related to an extensive high pressure system over eastern Ukraine and Belarus, which brings an inflow of cold, continental air masses to Central Europe. The results provide a broaden information on the region climatologically important due to its transitional location, which may be relevant for investigating past and future trends in spring freeze risk for perennial crops, as changes in the frequency of these airflow patterns will result in changes in the risk of frost damage.

show abstract

Analysis of climatic trends in data from the agrometeorological station of Bologna-Cadriano, Italy (1952–2007)

Cited by 23 publications

References 21 publications

Recent trends in seasonal and annual precipitation indices in Tuscany (Italy)

Recent trends in seasonal and annual precipitation indices in Tuscany (Italy)

A review of studies on observed precipitation trends in Italy

Spatial and temporal variability of the frost‐free season in Central Europe and its circulation background

Contact Info

Product

Resources

About