HEAL DSpace

Stochastic investigation of large-scale hydroclimatic correlations over the Mediterranean

DSpace/Manakin Repository

Show simple item record

dc.contributor.author Μαρκόνης, Ιωάννης el
dc.contributor.author Markonis, Ioannis en
dc.date.accessioned 2016-02-17T11:06:58Z
dc.date.available 2016-02-17T11:06:58Z
dc.date.issued 2016-02-17
dc.identifier.uri https://dspace.lib.ntua.gr/xmlui/handle/123456789/42015
dc.identifier.uri http://dx.doi.org/10.26240/heal.ntua.2139
dc.rights Αναφορά Δημιουργού-Μη Εμπορική Χρήση-Όχι Παράγωγα Έργα 3.0 Ελλάδα *
dc.rights.uri http://creativecommons.org/licenses/by-nc-nd/3.0/gr/ *
dc.subject Στοχαστικές ανελίξεις el
dc.subject Δυναμική Hurst-Kolmogorov el
dc.subject Παλαιοκλιματικές ανακατασκευές el
dc.subject Ακραία υδροκλιματικά συμβάντα el
dc.subject Συσχετίσεις μακροκλίμακας el
dc.subject Stochastic processes en
dc.subject Long-term persistence el
dc.subject Paleoclimatic reconstructions el
dc.subject Extreme hydroclimatic events el
dc.subject Climatic teleconnections el
dc.title Stochastic investigation of large-scale hydroclimatic correlations over the Mediterranean en
heal.type doctoralThesis
heal.secondaryTitle Στοχαστική διερεύνηση υδροκλιματικών συσχετίσεων μακροκλίμακας στην περιοχή της Μεσογείου el
heal.classification Στοχαστική ανάλυση el
heal.classification Κλιματολογία el
heal.classification Stochastic processes en
heal.classification Climatology el
heal.classificationURI http://data.seab.gr/concepts/274afd0853d6b30d920f75f79fbc18231b943332
heal.classificationURI http://data.seab.gr/concepts/3ece24b94e3c8cb78fb1a19c7c7dc378313f788c
heal.classificationURI http://data.seab.gr/concepts/00b94906743fbc12dfadd9e7cee1d107cae9fdd7
heal.classificationURI http://data.seab.gr/concepts/3ece24b94e3c8cb78fb1a19c7c7dc378313f788c
heal.language en
heal.access free
heal.recordProvider ntua el
heal.publicationDate 2015-12
heal.abstract During the last 20 years the interest in climatic change has grown due to the hypothesis of anthropogenic global warming. Since climate is associated with some major human activities such as water resources management and therefore crop production, serious concerns have been raised regarding the magnitude of change in the global climatic system and its consequences. The estimation of climatic variability came to the spotlight and with it also came the science of Paleoclimatology, which led to ample progress in the presentation of past climates. Earlier in the 20th century, in another scientific field, Hydrology, the probabilistic approach earned significant ground in modeling natural processes. These stochastic methods can be now utilized to paleoclimatic records in order to give us some insight of the natural climatic variability. This doctoral thesis makes a few steps towards this direction. It examines whether the Hurst-Kolmogorov stochastic framework, known also as long-term persistence or long range dependence, can be implemented to hydroclimatic modelling. The analysis covers different temporal and spatial scales, ranging from daily to 109 years in time and from 105 m to the whole planet in space. It also explores the effect of deterministic components, such as the long-term changes in Earth’s orbit and the atmospheric teleconnection patterns, to the hydroclimatic variability. Moving to smaller spatial scales the stochastic framework was used to determine the statistical significance of rainfall variability over Greece, where some earlier alarming studies suggested substantial annual decrease. Finally, the climate of Crete was reconstructed and the links between climate and society were investigated in a Mediterranean island with a long history of hydraulic works. The major conclusion of this study is that the Hurst-Kolmogorov behaviour is evident both in temperature and precipitation. Its implications stem from the fact that natural variability is far more enhanced than assumed so far in the majority of climate studies. Thus, there is some strong evidence that the recent global temperature change lies within the limits of natural climatic fluctuations. In the same concept, there is not anything irregular in the decrease of rainfall over Greece. Moreover, it was found that the dependence structure of precipitation is varying with scale, suggesting two rather different behaviours; one for below-decedal and one for larger scales. Finally, it was shown that extreme or changing climate might amplify or hinder societal change, but this influence is minor compared to the dynamics of the internal social self-organisation. en
heal.advisorName Κουτσογιάννης, Δημήτριος el
heal.committeeMemberName Κουτσογιάννης, Δημήτριος el
heal.committeeMemberName Μαμάσης, Νικόλαος el
heal.committeeMemberName Κοτρώνη, Βασιλική el
heal.committeeMemberName Μπαλτάς, Ευάγγελος el
heal.committeeMemberName Νάστος, Παναγιώτης el
heal.committeeMemberName Λαγγούσης, Ανδρέας el
heal.committeeMemberName Οικονόμου, Πολυχρόνης el
heal.academicPublisher Εθνικό Μετσόβιο Πολυτεχνείο. Σχολή Πολιτικών Μηχανικών. Τομέας Υδατικών Πόρων και Περιβαλλοντικής Μηχανικής el
heal.academicPublisherID ntua
heal.numberOfPages 222 σ.
heal.fullTextAvailability true


Files in this item

The following license files are associated with this item:

This item appears in the following Collection(s)

Show simple item record

Αναφορά Δημιουργού-Μη Εμπορική Χρήση-Όχι Παράγωγα Έργα 3.0 Ελλάδα Except where otherwise noted, this item's license is described as Αναφορά Δημιουργού-Μη Εμπορική Χρήση-Όχι Παράγωγα Έργα 3.0 Ελλάδα