Recent global trends in atmospheric fronts

Research output: Contribution to journalArticleResearchpeer-review

Abstract

An automated, objective method is used to identify atmospheric fronts in four independent reanalysis data sets for the period 1989-2009 and to calculate changes in their frequency. The analysis highlights several coherent regions of statistically significant change in the frequency of fronts. The front frequency in the North Atlantic storm track has decreased by about 10-20 , whereas changes observed over the Southern Ocean are relatively small. In the subtropical Pacific the front frequency has increased significantly, which is consistent with an expansion of the dry subtropics. The sensitivity of these trends to the detection method is tested and the results are found to be robust. The results provide a concise summary of the recent changes in a major component of synoptic weather conditions, providing a benchmark for climate models as well as an additional tool for interpreting climate change predictions.
Original languageEnglish
Pages (from-to)1 - 6
Number of pages6
JournalGeophysical Research Letters
Volume38
Issue numberL21812
DOIs
Publication statusPublished - 2011

Cite this

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title = "Recent global trends in atmospheric fronts",
abstract = "An automated, objective method is used to identify atmospheric fronts in four independent reanalysis data sets for the period 1989-2009 and to calculate changes in their frequency. The analysis highlights several coherent regions of statistically significant change in the frequency of fronts. The front frequency in the North Atlantic storm track has decreased by about 10-20 , whereas changes observed over the Southern Ocean are relatively small. In the subtropical Pacific the front frequency has increased significantly, which is consistent with an expansion of the dry subtropics. The sensitivity of these trends to the detection method is tested and the results are found to be robust. The results provide a concise summary of the recent changes in a major component of synoptic weather conditions, providing a benchmark for climate models as well as an additional tool for interpreting climate change predictions.",
author = "Gareth Berry and Christian Jakob and Michael Reeder",
year = "2011",
doi = "10.1029/2011GL049481",
language = "English",
volume = "38",
pages = "1 -- 6",
journal = "Geophysical Research Letters",
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Recent global trends in atmospheric fronts. / Berry, Gareth; Jakob, Christian; Reeder, Michael.

In: Geophysical Research Letters, Vol. 38, No. L21812, 2011, p. 1 - 6.

Research output: Contribution to journalArticleResearchpeer-review

TY - JOUR

T1 - Recent global trends in atmospheric fronts

AU - Berry, Gareth

AU - Jakob, Christian

AU - Reeder, Michael

PY - 2011

Y1 - 2011

N2 - An automated, objective method is used to identify atmospheric fronts in four independent reanalysis data sets for the period 1989-2009 and to calculate changes in their frequency. The analysis highlights several coherent regions of statistically significant change in the frequency of fronts. The front frequency in the North Atlantic storm track has decreased by about 10-20 , whereas changes observed over the Southern Ocean are relatively small. In the subtropical Pacific the front frequency has increased significantly, which is consistent with an expansion of the dry subtropics. The sensitivity of these trends to the detection method is tested and the results are found to be robust. The results provide a concise summary of the recent changes in a major component of synoptic weather conditions, providing a benchmark for climate models as well as an additional tool for interpreting climate change predictions.

AB - An automated, objective method is used to identify atmospheric fronts in four independent reanalysis data sets for the period 1989-2009 and to calculate changes in their frequency. The analysis highlights several coherent regions of statistically significant change in the frequency of fronts. The front frequency in the North Atlantic storm track has decreased by about 10-20 , whereas changes observed over the Southern Ocean are relatively small. In the subtropical Pacific the front frequency has increased significantly, which is consistent with an expansion of the dry subtropics. The sensitivity of these trends to the detection method is tested and the results are found to be robust. The results provide a concise summary of the recent changes in a major component of synoptic weather conditions, providing a benchmark for climate models as well as an additional tool for interpreting climate change predictions.

UR - http://www.agu.org/journals/gl/gl1121/2011GL049481/2011GL049481.pdf

U2 - 10.1029/2011GL049481

DO - 10.1029/2011GL049481

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SP - 1

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JO - Geophysical Research Letters

JF - Geophysical Research Letters

SN - 0094-8276

IS - L21812

ER -