The Connection between the Madden-Julian Oscillation and European Weather Regimes and its Modulation by low frequency Forcings ...
Progress in extended range numerical weather prediction for Europe relies on a correct representation of the large-scale midlatitude circulation which can be described by specific weather regimes for the Atlantic-European region. Therefore, it is important to understand their life cycles and identif...
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| Format: | Text |
| Language: | English |
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ETH Zurich
2017
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| Online Access: | https://dx.doi.org/10.3929/ethz-b-000238793 http://hdl.handle.net/20.500.11850/238793 |
| Summary: | Progress in extended range numerical weather prediction for Europe relies on a correct representation of the large-scale midlatitude circulation which can be described by specific weather regimes for the Atlantic-European region. Therefore, it is important to understand their life cycles and identify processes that are responsible for their favoured occurrence, persistence or transition. Recent studies have shown that convectively active phases of the Madden-Julian Oscillation (MJO) in the tropics impact and control part of the distribution and sequences of the daily weather regimes defined over the North Atlantic-European region. Thereby, El Niño-Southern Oscillation (ENSO), the Pacific-North American teleconnection pattern (PNA), and the strength of the stratospheric polar vortex modulate the background states through which the MJO and its global response patterns propagate during Northern Hemisphere winter. Within this thesis, we here present how the frequency of defined Atlantic-European weather regime ... |
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