Dynamische Antriebsmechanismen der NAO
An analysis of the dynamic mechanisms relevant for the North Atlantic Oscillation (NAO) is performed based on the NCAR-NCEP Reanalysis data set. The NAO is mainly driven by transient fluxes, whereby growth and decay of the NAO-cycle are caused by synoptic waves, which break anticyclonically in the p...
Main Authors: | , , , |
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Format: | Article in Journal/Newspaper |
Language: | German |
Published: |
2008
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Subjects: | |
Online Access: | http://hdl.handle.net/11858/00-001M-0000-0018-32E3-A |
Summary: | An analysis of the dynamic mechanisms relevant for the North Atlantic Oscillation (NAO) is performed based on the NCAR-NCEP Reanalysis data set. The NAO is mainly driven by transient fluxes, whereby growth and decay of the NAO-cycle are caused by synoptic waves, which break anticyclonically in the positive phase (negative ano - maly at Iceland) and cyclonically in the negative phase. The NAO-pattern as well as further teleconnections can be simulated with a dynamic atmospheric model. Reanalysis data (ERA40) show that the daily NAO variability is rela ted to the stratospheric circulation. |
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