reference : Quasiresonant amplification of planetary waves and recent Northern Hemisphere weather extremes

JSON YAML text HTML Turtle N-Triples JSON Triples RDF+XML RDF+JSON Graphviz SVG
/reference/f4a5e669-dd71-4ce7-acf9-241dd18c38ec
Bibliographic fields
reftype Journal Article
Abstract In recent years, the Northern Hemisphere has suffered several devastating regional summer weather extremes, such as the European heat wave in 2003, the Russian heat wave and the Indus river flood in Pakistan in 2010, and the heat wave in the United States in 2011. Here, we propose a common mechanism for the generation of persistent longitudinal planetary-scale high-amplitude patterns of the atmospheric circulation in the Northern Hemisphere midlatitudes. Those patterns—with zonal wave numbers m = 6, 7, or 8—are characteristic of the above extremes. We show that these patterns might result from trapping within midlatitude waveguides of free synoptic waves with zonal wave numbers k ≈ m. Usually, the quasistationary dynamical response with the above wave numbers m to climatological mean thermal and orographic forcing is weak. Such midlatitude waveguides, however, may favor a strong magnification of that response through quasiresonance.
Author Petoukhov, Vladimir; Rahmstorf, Stefan; Petri, Stefan; Schellnhuber, Hans Joachim
DOI 10.1073/pnas.1222000110
Date April 2, 2013
Issue 14
Journal Proceedings of the National Academy of Sciences
Pages 5336-5341
Title Quasiresonant amplification of planetary waves and recent Northern Hemisphere weather extremes
Volume 110
Year 2013
Bibliographic identifiers
.reference_type 0
_record_number 20288
_uuid f4a5e669-dd71-4ce7-acf9-241dd18c38ec