Temporal Variability of Temperature Extremes in the Sardinia Region (Italy)

In this paper, the temporal tendencies of temperature data from the island of Sardinia (Italy) were analyzed by considering 48 data series in the period 1982–2011. In particular, monthly temperatures (maximum and minimum), and some indices of daily extremes were evaluated and tested to detect trends...

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Main Authors: Tommaso Caloiero, Ilaria Guagliardi
Format: Article
Language:English
Published: MDPI AG 2020-08-01
Series:Hydrology
Subjects:
Online Access:https://www.mdpi.com/2306-5338/7/3/55
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author Tommaso Caloiero
Ilaria Guagliardi
author_facet Tommaso Caloiero
Ilaria Guagliardi
author_sort Tommaso Caloiero
collection DOAJ
description In this paper, the temporal tendencies of temperature data from the island of Sardinia (Italy) were analyzed by considering 48 data series in the period 1982–2011. In particular, monthly temperatures (maximum and minimum), and some indices of daily extremes were evaluated and tested to detect trends using the Mann-Kendall non-parametric test. Results showed a positive trend in the spring months and a marked negative trend in the autumn-winter months for minimum temperatures. As regards maximum temperatures, almost all months showed positive trends, although an opposite behavior was detected in September and in the winter months. With respect to the extreme indices, a general increasing trend of the series was detected for the diurnal temperature range (DTR), frost days (FD), summer days (SU25), warm (WSDI) and cold (CSDI) spells. As regards tropical nights (TR20), an equal distribution of positive and negative trends has emerged. Results of the spatial analysis performed on the trend marks suggested that Sardinia’s topography could influence temperature variability.
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spelling doaj.art-d3262291aecc4661ac98f2a21fbfaaf42023-11-20T09:49:19ZengMDPI AGHydrology2306-53382020-08-01735510.3390/hydrology7030055Temporal Variability of Temperature Extremes in the Sardinia Region (Italy)Tommaso Caloiero0Ilaria Guagliardi1National Research Council-Institute for Agricultural and Forest Systems in Mediterranean (CNR-ISAFOM), 87036 Rende, ItalyNational Research Council-Institute for Agricultural and Forest Systems in Mediterranean (CNR-ISAFOM), 87036 Rende, ItalyIn this paper, the temporal tendencies of temperature data from the island of Sardinia (Italy) were analyzed by considering 48 data series in the period 1982–2011. In particular, monthly temperatures (maximum and minimum), and some indices of daily extremes were evaluated and tested to detect trends using the Mann-Kendall non-parametric test. Results showed a positive trend in the spring months and a marked negative trend in the autumn-winter months for minimum temperatures. As regards maximum temperatures, almost all months showed positive trends, although an opposite behavior was detected in September and in the winter months. With respect to the extreme indices, a general increasing trend of the series was detected for the diurnal temperature range (DTR), frost days (FD), summer days (SU25), warm (WSDI) and cold (CSDI) spells. As regards tropical nights (TR20), an equal distribution of positive and negative trends has emerged. Results of the spatial analysis performed on the trend marks suggested that Sardinia’s topography could influence temperature variability.https://www.mdpi.com/2306-5338/7/3/55daily temperatureextreme valuestrend analysisSardinia
spellingShingle Tommaso Caloiero
Ilaria Guagliardi
Temporal Variability of Temperature Extremes in the Sardinia Region (Italy)
Hydrology
daily temperature
extreme values
trend analysis
Sardinia
title Temporal Variability of Temperature Extremes in the Sardinia Region (Italy)
title_full Temporal Variability of Temperature Extremes in the Sardinia Region (Italy)
title_fullStr Temporal Variability of Temperature Extremes in the Sardinia Region (Italy)
title_full_unstemmed Temporal Variability of Temperature Extremes in the Sardinia Region (Italy)
title_short Temporal Variability of Temperature Extremes in the Sardinia Region (Italy)
title_sort temporal variability of temperature extremes in the sardinia region italy
topic daily temperature
extreme values
trend analysis
Sardinia
url https://www.mdpi.com/2306-5338/7/3/55
work_keys_str_mv AT tommasocaloiero temporalvariabilityoftemperatureextremesinthesardiniaregionitaly
AT ilariaguagliardi temporalvariabilityoftemperatureextremesinthesardiniaregionitaly