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 |
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