Air temperature trends related to changes in atmospheric circulation in the wider area of Greece

Nastos, Panagiotis T.; Philandras, C. M.; Founda, Dimitra; Zerefos, C. S.

doi:10.1080/01431161.2010.517796

Cited by 35 publications

(20 citation statements)

References 28 publications

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“…The strong positive geopotential height anomalies, which prevail over the western central basin of the Mediterranean during wintertime and extend toward Russia, drive cool air to the Eastern Basin dominated by lower height anomalies (Krichak et al 2000). The results are in agreement with those reported by Nastos et al (2011), who found a statistically significant negative correlation between wintertime temperature and MOAC over Greece for the period 1951-2007and 1955-2001, respectively. In contrast, Elmallah and Elsharkawy (2011 observed positive correlation with wintertime temperature anomalies over Egypt which confirms the importance of the distinct local characteristics of each zone in the Eastern Mediterranean region.…”

Section: Resultssupporting

confidence: 94%

Inter-annual temperature and precipitation variations over the Litani Basin in response to atmospheric circulation patterns

Ramadan

Ramamurthy²,

Beighley

2011

Theor Appl Climatol

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This study examines the sensitivity of a mid-size basin's temperature and precipitation response to different global and regional climate circulation patterns. The implication of the North Atlantic Oscillation (NAO), El Niño Southern Oscillation (ENSO), Indian Monsoon and ten other teleconnection patterns of the Northern Hemisphere are investigated. A methodology to generate a basin-scale, longterm monthly surface temperature and precipitation time series has been established using different statistical tests. The Litani River Basin is the focus of this study. It is located in Lebanon, east of the Mediterranean Basin, which is known to have diverse geophysical and environmental characteristics. It was selected to explore the influence of the diverse physical and topographical features on its hydroclimatological response to global and regional climate patterns. We also examine the opportunity of conducting related studies in areas with limited long-term measured climate and/or hydrological data. Litani's monthly precipitation and temperature data have been collected and statistically extrapolated using remotely sensed data products from satellites and as well as in situ gauges. Correlations between 13 different teleconnection indices and the basin's precipitation and temperature series are investigated. The study shows that some of the annual and seasonal temperature and precipitation variance can be partially associated with many atmospheric circulation patterns. This would give the opportunity to relate the natural climate variability with the watershed's hydroclimatology performance and thus differentiate it from other anthropogenic induced climate change outcomes.

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Section: Resultssupporting

confidence: 94%

Inter-annual temperature and precipitation variations over the Litani Basin in response to atmospheric circulation patterns

Ramadan

Ramamurthy²,

Beighley

2011

Theor Appl Climatol

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“…The present study evaluated the time trends in pediatric hospitalizations for varicella infection in a temperate region prior to the implementation of universal VZV immunization among infants and during which period climate changes were notable [20]. The study also evaluated the association between the occurrence of hospitalized varicella cases and climatic variables during the aforementioned study period.…”

Section: Discussionmentioning

confidence: 99%

“…To date, the association between the epidemiological trends in varicella infection and climatic factors (temperature, rainfall, humidity) has mainly been studied in tropical regions [12], [17]–[19]. Nowadays, while environmental factors are modified in temperate regions secondary to the ozone phenomenon, the investigation of a possible association with epidemiologic changes in varicella incidence may be vital for designing related evidence-based public health prevention strategies [20].…”

Section: Introductionmentioning

confidence: 99%

“…The study objectives were to assess the time trends in the epidemiology of hospitalized varicella cases in a temperate Mediterranean country during the pre-licensure period for the varicella vaccine when climate changes were notable [20]. In addition, the study objectives were to evaluate the association between the frequency of hospitalized varicella cases and climatic variables in the aforementioned study site.…”

Section: Introductionmentioning

confidence: 99%

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Time Trends in Pediatric Hospitalizations for Varicella Infection Are Associated with Climatic Changes: A 22-Year Retrospective Study in a Tertiary Greek Referral Center

et al. 2012

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Background/AimsThe transmission rate of air-borne infectious diseases may vary secondary to climate conditions. The study assessed time trends in the seasonality of hospitalized varicella cases in a temperate region in relation to climatic parameters prior to the implementation of universal varicella immunization.MethodsA retrospective descriptive study was conducted among all pediatric and adolescent varicella patients (n = 2366) hospitalized at the “Aghia Sophia” Children's Hospital during 1982–2003 in Athens, Greece. Date of infection was computed based on hospital admission date. Seasonal and monthly trends in the epidemiology of varicella infection were assessed with time series analysis (ARIMA modeling procedure). The correlation between the frequency of varicella patients and the meteorological parameters was examined by the application of Generalized Linear Models with Gamma distribution.ResultsDuring 1982–2003, the occurrence of hospitalized varicella cases increased during summer (p = 0.025) and decreased during autumn (p = 0.021), and particularly in September (p = 0.003). The frequency of hospitalized varicella cases was inversely associated with air temperature (p<0.001). In contrast, the occurrence of hospitalized varicella cases was positively associated with wind speed (p = 0.009).ConclusionsPediatric hospitalizations for varicella infection rates have increased during summer and decreased during autumn in the examined temperate region. Time trends in hospitalized varicella cases are associated with climatic variables.

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“…Regional climate variations have regional features that often do not match those of the globe as a whole. Greece is differentiated from the rest of Europe in that air temperature shows a slight negative trend over the twentieth century (e.g., Feidas et al 2004;Nastos et al 2011).…”

Section: Introductionmentioning

confidence: 99%

Spatial analysis of the temperature trends in Serbia during the period 1961–2010

Bajat

Blagojević

Kilibarda

et al. 2014

Theor Appl Climatol

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The spatial analysis of annual and seasonal temperature trends in Serbia during the period 1961-2010 was carried out using mean monthly data from 64 meteorological stations. Change year detection was achieved using cumulative sum charts. The magnitude of trends was derived from the slopes of linear trends using the least square method. The same formalism of least square method was used to assess the statistical significance of the determined trends. Maps of temperature trends were generated by applying a spatial regression method to visualize the detected tendencies. The obtained results indicate a negative temperature trend for the period before the change year except for winter and a more pronounced positive trend after the change year. Besides being more pronounced, the vast majority of trends after the change year were also clearly statistically significant. Our estimate of the average temperature trend over Serbia is in agreement with those obtained at the global and European scale. Calculated global autocorrelation statistics (Moran's I) indicate an apparent random spatial pattern of temperature trends across the Serbia for both periods before and after the change year.

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Air temperature trends related to changes in atmospheric circulation in the wider area of Greece

Cited by 35 publications

References 28 publications

Inter-annual temperature and precipitation variations over the Litani Basin in response to atmospheric circulation patterns

Inter-annual temperature and precipitation variations over the Litani Basin in response to atmospheric circulation patterns

Time Trends in Pediatric Hospitalizations for Varicella Infection Are Associated with Climatic Changes: A 22-Year Retrospective Study in a Tertiary Greek Referral Center

Spatial analysis of the temperature trends in Serbia during the period 1961–2010

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