The changing rainfall regime in Greece and its impact on climatological means

Pnevmatikos, John D.; Katsoulis, B. D.

doi:10.1017/s1350482706002350

Cited by 63 publications

(37 citation statements)

References 14 publications

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“…Changes in the surrounding environment are mostly related to the urbanization of the area. NOA's precipitation series was found to be homogeneous from 1890 to 1985 (Katsoulis and Kambezidis, 1989), from 1900 to 1999 (Pnevmatikos and Katsoulis, 2006) and from 1955 to 2001 (Feidas et al ., 2007), using several statistical methods and homogeneity tests.…”

Section: Homogeneity Testsmentioning

confidence: 99%

Observed and projected precipitation variability in Athens over a 2.5 century period

Founda

Giannakopoulos

Pierros

et al. 2013

Atmospheric Science Letters

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The observed and projected precipitation variability in Athens is assessed for a 2.5 century period. The observed variability is examined using the 150-year historical record of the National Observatory of Athens, while future variability using an ensemble of regional climate models. A good agreement between observations and the model ensemble was found for annual and seasonal precipitation. The model ensemble overestimated the number of rainy days and precipitation amount corresponding to light precipitation and underestimated them corresponding to moderate-heavy precipitation. A 35% decrease in total annual precipitation coupled with an increase in extreme precipitation was projected by the model ensemble up to 2100.

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Section: Homogeneity Testsmentioning

confidence: 99%

Observed and projected precipitation variability in Athens over a 2.5 century period

Founda

Giannakopoulos

Pierros

et al. 2013

Atmospheric Science Letters

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“…According to Founda et al (2004), since the mid1970s most regions of Greece have experienced significant positive temperature trends that are more pronounced in summer; furthermore, starting in this period of time, Greece has entered a prolonged period of drought (e.g. Dalezios et al, 2000;Pnevmatikos and Katsoulis, 2006;Livada and Assimakopoulos, 2007) that has led to a significantly high number of fires and area burnt (Dimitrakopoulos et al, 2011a).…”

Section: Introductionmentioning

confidence: 99%

Sensitivity and evaluation of current fire risk and future projections due to climate change: the case study of Greece

Karali

Hatzaki

Giannakopoulos

et al. 2014

Nat. Hazards Earth Syst. Sci.

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Abstract. Current trends in the Mediterranean climate, and more specifically in Greece, indicate longer and more intense summer droughts that even extend out of season. In connection to this, the frequency of forest fire occurrence and intensity is on the rise. In the present study, the Canadian Fire Weather Index (FWI) is used in order to investigate the relationship between fire risk and meteorological conditions in Greece. FWI is a meteorologically based index designed in Canada and used worldwide, including the Mediterranean Basin, to estimate fire danger in a generalised fuel type based solely on weather observations. Here, an evaluation of the index is initially performed for the Greek territory using fire observations that cover a 15 yr period. Three critical fire risk threshold values are established for the area of Greece based on daily mean meteorological data: FWI = 15, FWI = 30 and FWI = 45, increasing from the northwest to the southeast. Subsequently, a regional climate model is employed providing input for the FWI system to investigate the impacts of climate change on fire risk for two future time periods, 2021-2050 and 2071-2100, under the A1B emissions scenario. Days with critical fire risk are expected to increase by as many as 50 days per year by the end of the century.

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“…The climate is typical Mediterranean, with a hot and relatively dry summer, and a wet season during autumn, winter and spring [28]. The mean annual precipitation in northern Peloponnese ranges from 697 to 1178 mm, with the highest rainfall frequency and intensity occur during November and January.…”

Section: Study Areasmentioning

confidence: 99%

Exploring the Impact of Analysis Scale on Landslide Susceptibility Modeling: Empirical Assessment in Northern Peloponnese, Greece

2018

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Abstract:The main purpose of this study is to explore the impact of analysis scale on the performance of a quantitative model for landslide susceptibility assessment through empirical analyses in the northern Peloponnese, Greece. A multivariate statistical model like logistic regression (LR) was applied at two different scales (a regional and a more detailed scale). Due to this scale difference, the implementation of the model was based on two landslide inventories representing in a different way the landslide occurrence (as point and polygon features), and two datasets of similar geo-environmental factors characterized by a different size of grid cells (90 m and 20 m). Model performance was tested by a standard validation method like receiver operating characteristics (ROC) analysis. The validation results in terms of accuracy (about 76%) and prediction ability (Area under the Curve (AUC) = 0.84) of the model revealed that the more detailed scale analysis is more appropriate for landslide susceptibility assessment and mapping in the catchment under investigation than the regional scale analysis.

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The changing rainfall regime in Greece and its impact on climatological means

Cited by 63 publications

References 14 publications

Observed and projected precipitation variability in Athens over a 2.5 century period

Observed and projected precipitation variability in Athens over a 2.5 century period

Sensitivity and evaluation of current fire risk and future projections due to climate change: the case study of Greece

Exploring the Impact of Analysis Scale on Landslide Susceptibility Modeling: Empirical Assessment in Northern Peloponnese, Greece

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