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| Titel |
Atmospheric rivers and extreme precipitation in Norway |
| VerfasserIn |
Kirien Whan, Rein Haarsma, Jana Sillmann |
| Konferenz |
EGU General Assembly 2017
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| Medientyp |
Artikel
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| Sprache |
en
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 19 (2017) |
| Datensatznummer |
250142032
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| Publikation (Nr.) |
 EGU/EGU2017-5604.pdf |
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| Zusammenfassung |
| ‘Atmospheric rivers’ are long, narrow regions of high water vapour content that are
responsible for the horizontal transport of moisture to higher latitudes. They are associated
with the majority of extreme precipitation events in Norway throughout the observational
record. These extreme precipitation events can be associated with flooding that has large
impacts on society, such as the October 2014 event in Flåm. We examined changes in
extreme precipitation between the current and future climates in the coupled global climate
model, EC-EARTH, using high-resolution simulations (~25 km) that can resolve extratropical
storms and atmospheric rivers. We use the r-largest method (r=3) to fit stationary (no
covariates) and non-stationary (with an index of atmospheric rivers as a covariate) generalised
extreme value distributions to the block maxima of annual precipitation. The value of a
regional ‘index flood’ type approach is explored and future changes in the largest
precipitation events of the year that are associated with atmospheric rivers are presented. |
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