A5070083261- Climate variability and models
- Tree-ring climate responses
- Meteorological Phenomena and Simulations
- Plant Water Relations and Carbon Dynamics
- Hydrology and Drought Analysis
- Cryospheric studies and observations
- Solar Radiation and Photovoltaics
- Precipitation Measurement and Analysis
- Geology and Paleoclimatology Research
- Atmospheric aerosols and clouds
- Atmospheric Ozone and Climate
- Species Distribution and Climate Change
- Hydrology and Watershed Management Studies
- Historical and socio-economic studies of Spain and related regions
- Landslides and related hazards
- Atmospheric chemistry and aerosols
- Climate change and permafrost
- Ecology and Vegetation Dynamics Studies
- Atmospheric and Environmental Gas Dynamics
- Urban Heat Island Mitigation
- Remote Sensing and Land Use
- demographic modeling and climate adaptation
- Plant Ecology and Soil Science
- Impact of Light on Environment and Health
- Tropical and Extratropical Cyclones Research
Institute of Atmospheric Sciences and Climate
2016-2025
National Research Council
2015-2025
National Academies of Sciences, Engineering, and Medicine
2003-2015
University of Milan
2001-2006
Bologna Research Area
2006
Abstract This paper describes the HISTALP database, consisting of monthly homogenised records temperature, pressure, precipitation, sunshine and cloudiness for ‘Greater Alpine Region’ (GAR, 4–19°E, 43–49°N, 0–3500m asl). The longest temperature air pressure series extend back to 1760, precipitation 1800, 1840s 1880s. A systematic QC procedure has been applied a high number inhomogeneities (more than 2500) outliers 5000) have detected removed. 557 are kept in different data modes: original...
Abstract The Italian monthly temperature (mean, maximum and minimum) precipitation secular data set was updated completely revised. Station density metadata availability were greatly improved the series subjected to a detailed quality control homogenisation procedure. is described in detail. bias affecting original quantified by studying temporal evolution of mean adjustments applied examined light stations history. results stress importance climate change studies. final clustered into...
Abstract This paper investigates temperature variability in the Alps and their surroundings based on 97 instrumental series of monthly mean temperatures. A discussion initial homogenizing procedure illustrates its advantages risks. comparison homogenized with original clearly shows necessity to homogenize. Each had breaks (an average five per series) all was systematically biased by non‐climatic noise. noise has subdued long‐term amplitude evolution region 0.5 K. The relatively high spatial...
Abstract. The COST (European Cooperation in Science and Technology) Action ES0601: advances homogenization methods of climate series: an integrated approach (HOME) has executed a blind intercomparison validation study for monthly algorithms. Time series temperature precipitation were evaluated because their importance studies they represent two important types statistics (additive multiplicative). algorithms validated against realistic benchmark dataset. contains real inhomogeneous data as...
Abstract. An analysis was made of the Precipitation Concentration Index using new MOPREDAS database monthly precipitation in Spain (Monthly Data base Spain). The compiled after exhaustive quality control complete digitalized Spanish Meterological Agency (AEMet) archives and contains a total set 2670 homogeneous series from 1946 to 2005. Thus, currently holds densest information available for 1946–2005 period ensures high resolution results. (PCI) is powerful indicator temporal distribution...
Abstract Instrumental meteorological measurements from periods prior to the start of national weather services are designated “early instrumental data.” They have played an important role in climate research as they allow daily decadal variability and changes temperature, pressure, precipitation, including extremes, be addressed. Early data can also help place twenty-first century climatic into a historical context such defining preindustrial its variability. Until recently, focus was on...
Abstract Snow cover in high-latitude and high-altitude regions has strong effects on the Earth’s climate, environmental processes socio-economic activities. Over last 50 years, Alps experienced a 5.6% reduction per decade snow duration, which already affects region where economy culture revolve, to large extent, around winter. Here we present evidence from 572 ring-width series extracted prostrate shrub ( Juniperus communis L.) growing at high elevation Val Ventina, Italy. These records show...
Abstract A new daily precipitation dataset, for the period 1920–1998, comprising seven stations located in northeastern Italy is presented. Seasonal and annual number of rainy days have been analysed a study aimed at investigating intensity extreme events has performed. Precipitation through studying both mean amount per wet day dividing into heavy non‐heavy classes. In addition, return calculated 30‐year running windows its variations examined. The results show negative trend associated...
The paper describes the development of a dataset 192 monthly precipitation series covering greater alpine region (GAR, 4–18°E by 43–49°N). A few time extend back to 1800. description is provided sometimes laborious processes that were involved in this work: from locating original sources data homogenizing records and eliminating as many outliers possible. Locating required exhaustive searches archives currently held yearbooks other states, countries smaller regional authorities existed at...
Abstract An extensive analysis of the HISTALP database is presented with aim giving a comprehensive picture secular climate variability and change in Greater Alpine Region (GAR, 4–19 E, 43–49 N). The encompasses 242 sites concerns temperature, pressure, precipitation, cloudiness, sunshine duration, vapour pressure relative humidity. analyses are based on four regional mean records representing different GAR low‐level areas an additional record high‐level locations. first goal paper to give...
Abstract An analysis of 67 sites daily precipitation records over the 1951–1996 period for Italy is presented. Seasonal and yearly total (TP), number wet days (WDs) intensity (PI) are investigated, trends both single station records, some different area average series studied. PI analysed by attributing to ten class‐intervals, removing influence variations in WDs yield changes underlying shape WD amount distribution. The results show that trend year significantly negative throughout Italy,...
A new data set of 45 daily precipitation series, covering quite uniformly Italian territory for the period 1880–2002, was recovered. The series have been homogenized on basis, completed by means statistical methods and grouped into five regions a Principal Component Analysis. Seasonal yearly total precipitation, number wet days, intensity were analyzed each station record averaged regional synthetic description results. Proportion frequency rainfall amounts, belonging to six class‐intervals,...
Abstract A new monthly precipitation database has been developed for conterminous provinces in Spain by exploiting the total amount of data available at Spanish Meteorological Agency (AEMET, formerly INM). The MOPREDAS (monthly Spain) constructed using all 6821 original series that have recorded least 10 years. These provide a 2670 complete, homogeneous period 1946–2005, and are most complete extensive dataset present. created with aim analysing behaviour Spain, to help validate downscaling...
This study analyzes the spatial and temporal changes in sunshine duration (SunDu) total cloud cover (TCC) over Iberian Peninsula (IP) four subregions during 1961–2004 using high‐quality, homogenized data sets. The analyses confirm that most of IP seasons, SunDu TCC variations are strongly negatively correlated, with absolute values ∼0.8–0.9. Somewhat weaker correlations (0.5–0.6) found southern portion summer. A large discrepancy between records occurs from 1960s until early 1980s when...
Abstract This paper presents trends in downward surface shortwave radiation (SSR) over Europe, which are based on the 56 longest series available from Global Energy Balance Archive that mainly concentrated central Europe. Special emphasis has been placed both ensuring temporal homogeneity and including most recent years data set. We have generated, for first time, composite time Europe covering period 1939–2012, studied by means of running trend analysis. The mean annual SSR shows an...
Abstract The present study aims at improving data availability and quality for the last 80–90 years daily precipitation in Calabria region (southern Italy). First, original database was homogenised gaps filled 129 rain gauges 1916–2006 period. Then, variability change were evaluated an adequate spatial resolution. Monthly annual total (P), number of wet days (WDs), intensity (PI) calculated each series. With regard to monthly a general negative trend, albeit not everywhere significant,...
ABSTRACT High‐resolution monthly precipitation climatologies for Italy are presented. They based on 1961–1990 normals obtained from a quality‐controlled dataset of 6134 stations covering the Italian territory and part Northern neighbouring regions. The computed by means two interpolation methods modelling precipitation‐elevation relationship at local level, more precisely weighted linear regression (LWLR) kriging (RK) performed. For both methods, optimisations also applied in order to...
Abstract. Daily Precipitation Concentration Index (CI) was used in this paper to investigate the statistical structure of daily precipitation across Europe based on 530 rainfall series for period 1971–2010. Annual CI shows a North-West South-East gradient (excluding Turkey and Greece). The same is also observed winter, spring autumn, while summer North-South. Highest annual seasonal concentrations were detected western Mediterranean basin, mainly along Spanish French coastlands. Latitude...
A major component of climate change is an increase in temperature and precipitation variability. Over the last few decades, frequency extremely warm temperatures drought severity has been observed across Europe. These warmer drier conditions may reduce productivity trigger compositional shifts forest communities. However, we still lack a robust, biogeographical characterization negative impacts extremes, such as droughts on forests. In this context, investigated impact 2017 summer European...
ABSTRACT High‐resolution monthly temperature climatologies for Italy are presented. They based on a dense and quality‐controlled observational dataset which includes 1484 stations three distinct approaches: multi‐linear regression with local improvements ( MLRLI ), an enhanced version of the model recently used Greater Alpine Region, kriging RK widely in literature and, lastly, weighted linear (LWLR) versus elevation, may be considered more suitable complex orography characterizing Italian...
Recent studies on changes in precipitation intensity encompassing North America have found evidence for an increase the relative amount of contributed by heavy and extreme rainfall events last 80 years. Within this context, purpose paper is to verify whether such a signal can also be detected northern Italy, where daily data are available from beginning 19th century. The analysis performed applying non-parametric Mann–Kendall test mean anomaly series obtained through averaging anomalies some...