North Atlantic sea surface temperature, atmospheric circulation and summer drought in Great Britain

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Authors

  • Daniel G. Kingston
  • Anne K. Fleig
  • Lena M. Tallaksen
  • David Hannah

Colleges, School and Institutes

External organisations

  • University of Oslo
  • University of Otago

Abstract

Improved understanding of climate system variation that leads to the development of streamflow drought will improve prospects of forecasting drought occurrence, and also inform drought mitigation and adaptation strategies. This research need is addressed here through investigation of the chain of processes linking concurrent and antecedent ocean-atmosphere variation to summer drought occurrence in four British drought regions. Results reveal that in some regions, drought development is associated with a horseshoe pattern of North Atlantic sea surface temperature (SST) anomalies that are most apparent in the six months preceding drought onset. This horseshoe pattern is similar to the pattern of SST anomalies associated with the North Atlantic Oscillation (NAO). However, analyses of geopotential height fields prior to drought onset reveal ocean-atmosphere forcing of drought events to be more complex than can be described simply by correlation of NAO and drought indices.

Details

Original languageEnglish
Title of host publicationGlobal Change
Subtitle of host publicationFacing Risks and Threats to Water Resources
Publication statusPublished - 1 Dec 2010
Event6th World FRIEND Conference "Global Change: Facing Risks and Threats to Water Resources", FRIEND 2010 - Fez, Morocco
Duration: 25 Oct 201029 Oct 2010

Conference

Conference6th World FRIEND Conference "Global Change: Facing Risks and Threats to Water Resources", FRIEND 2010
CountryMorocco
CityFez
Period25/10/1029/10/10

Keywords

  • Hydrological drought, North atlantic horseshoe pattern, North Atlantic oscillation, River flow, Sea surface temperature

ASJC Scopus subject areas

Sustainable Development Goals