Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 13 of 13 for “"Arctic Oscillation"”.
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Anomalous Eurasian snow extent and the wintertime AO
The winter mode of the Arctic Oscillation (AO) is the dominating influence on extratropical winter climate variability in the Northern Hemisphere (NH) . The phase of the Arctic Oscillation is characterized by trends in temperature, precipitation, air pressure, and storm tracks over the North …
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Trend Reversal in Lake Michigan Contribution to Snowfall
… to recent polarity transitions of the Arctic Oscillation and North Atlantic Oscillation.
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Winter climate response to continental snow anomalies
… mode of variability known as the Arctic Oscillation (AO). A major challenge for current climate variability studies is to predict the phase and magnitude of the AO, as it is a fundamental, internal mode of the atmosphere, but can nevertheless be triggered through a myriad of …
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A hydroclimatic assessment of the U.S. corn belt across spatial and temporal scales
… specifically the El Ni?o-Southern Oscillation and the Arctic Oscillation, influence climate variability in the form of temperature and precipitation patterns across the U.S. Corn Belt with findings applicable to agricultural decision making. A large- and local-scale hydroclimatic …
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The East Greenland Coastal Current : its structure variability, and large-scale impact
… is found to correlate significantly with the Arctic Oscillation index, lagged by 9 years, suggesting that the Arctic Ocean circulation patterns bring varying amounts of Pacific Water to the North Atlantic via the EGC/EGCC.
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Quasi-objective Nonlinear Principal Component Analysis and applications to the atmosphere
… stratosphere to represent the Quasi-Biennial Oscillation (QBO) and investigate its variability and structure. The two nonlinear principal components of the dataset offer a clear picture of the QBO. In particular, their structure shows that the QBO phase consists of a predominant 28.4-month …
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Arctic synoptic activity associated with sea ice variability using self-organizing maps
… synoptic activity and sea ice variability in the Arctic are studied using self-organizing maps (SOMs) to categorize observed weather patterns over the 1979-2010 period. The European Centre for Medium-Range Weather Forecasts (ECMWF) Re-Analysis (ERA-interim, or ERAI) provides the daily sea level …
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Study on Regional Responses of Pan-Arctic Terrestrial Ecosystems to Recent Climate Variability Using Satellite Remote Sensing
… net primary productivity (NPP) for the pan-Arctic basin and Alaska from 1983 to 2005. I developed a satellite remote sensing based evapotranspiration (ET) algorithm using GIMMS NDVI with the above meteorology inputs to assess spatial patterns and temporal trends in ET over the pan-Arctic …
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Study on Regional Responses of Pan-Arctic Terrestrial Ecosystems to Recent Climate Variability Using Satellite Remote Sensing
… net primary productivity (NPP) for the pan-Arctic basin and Alaska from 1983 to 2005. I developed a satellite remote sensing based evapotranspiration (ET) algorithm using GIMMS NDVI with the above meteorology inputs to assess spatial patterns and temporal trends in ET over the pan-Arctic …
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Using statistical learning approaches to understand trends and variability of tornadoes across the continental United States
… climate variables include El Niño Southern Oscillation (ENSO), Southern Oscillation Index (SOI), North Atlantic Oscillation (NAO), Pacific Decadal Oscillation (PDO), Arctic Oscillation (AO), and Atlantic Multi-decadal Oscillation (AMO). The model provides a robust way of estimating the …
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Application de la télédétection à l'analyse de la variabilité climatique des régions boréales et subarctiques du Canada et à la validation du modèle régional canadien du climat
… central region of Canada.The NAO (North Atlantic Oscillation) and AO (Arctic Oscillation) oscillations were also found to have an influence on the climatic regime of Canada.The effects of these climatic cycles on the annual growing degree-days are more accentuated over the Northeastern region of …
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The influence of Arctic sea-ice loss on mid-latitude weather and climate: exploring sensitivities and mechanisms
Over the past few decades, Arctic sea-ice extent has declined, while there has been an apparent increase in severe winter weather across some mid-latitude regions. This has led to much research into whether these trends are dynamically linked. It has been suggested that the link may involve the …
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Klimavariabilität der Tropo- und Stratosphäre in einem globalen gekoppelten Atmosphäre-Ozean-Modell mit vereinfachter stratosphärischer Chemie
In dieser Arbeit wurde die Variabilität der Atmosphäre in einem neuen gekoppelten Klimamodell (ECHO-GiSP) untersucht, welches eine vereinfachte Stratosphärenchemie (bis 80 km Höhe) enthält. Es wurden 2 Simulationen über 150 Jahre durchgeführt. In einer der Simulationen wurde die atmosphärische …