Skip to main content

Cold waves are getting milder in the northern midlatitudes

Author(s): Van Oldenborgh, Geert J; Mitchell-Larson, Eli; Vecchi, Gabriel A; De Vries, Hylke; Vautard, Robert; et al

Download
To refer to this page use: http://arks.princeton.edu/ark:/88435/pr1z31nn4p
Full metadata record
DC FieldValueLanguage
dc.contributor.authorVan Oldenborgh, Geert J-
dc.contributor.authorMitchell-Larson, Eli-
dc.contributor.authorVecchi, Gabriel A-
dc.contributor.authorDe Vries, Hylke-
dc.contributor.authorVautard, Robert-
dc.contributor.authorOtto, Friederike-
dc.date.accessioned2022-01-25T14:51:02Z-
dc.date.available2022-01-25T14:51:02Z-
dc.date.issued2019-10-22en_US
dc.identifier.citationVan Oldenborgh, Geert Jan, Eli Mitchell-Larson, Gabriel A. Vecchi, Hylke De Vries, Robert Vautard, and Friederike Otto. "Cold waves are getting milder in the northern midlatitudes." Environmental Research Letters 14, no. 11 (2019). doi:10.1088/1748-9326/ab4867.en_US
dc.identifier.urihttp://arks.princeton.edu/ark:/88435/pr1z31nn4p-
dc.description.abstractThe strong two-day cold wave in the midwestern United States in January 2019 again ignited the discussion as to whether cold waves are getting more severe or not as a result of Arctic amplification due to climate change. Assessing the evolution of cold waves in the northern hemisphere midlatitudes in the observations has been difficult because the variability of cold waves is large compared to anthropogenic warming. In order to detect changes in cold spells, two complementary ways to optimise the signal-to-noise ratio are employed: multi-decadal series at individual stations, and for shorter time periods by using spatially aggregated measures. Global warming is now strong enough to make trends clear at individual stations when considering long enough (>50 yr) records of daily minimum and maximum temperature. Calculating the land area that has temperatures below the 1-in-10 year return value (defined over 1951–1980) enables us to investigate trends over a shorter time horizon. The long-term station data have strong decreases everywhere in the lowest minimum temperature. Warming trends in the lowest maximum temperature are smaller over most of the Northern Hemisphere, with dataset-dependent indications of possible negative trends in parts of the United States and Mexico. Considering the area experiencing cold waves over the last decades, the most notable feature is a sharp decline of this area since the 1980s. The natural variability is still so large that it is possible to arbitrarily select starting dates after the decline for which the trend is slightly positive in smaller regions like North America or Europe. However, these values are within uncertainties compatible with a steady decline and have differing starting dates in North America and Europe. An analysis of the entire northern midlatitudes confirms the steady decrease in severity and frequency of cold waves over the last decades in the observations.en_US
dc.language.isoen_USen_US
dc.relation.ispartofEnvironmental Research Lettersen_US
dc.rightsFinal published version. This is an open access article.en_US
dc.titleCold waves are getting milder in the northern midlatitudesen_US
dc.typeJournal Articleen_US
dc.identifier.doidoi:10.1088/1748-9326/ab4867-
dc.identifier.eissn1748-9326-
pu.type.symplectichttp://www.symplectic.co.uk/publications/atom-terms/1.0/journal-articleen_US

Files in This Item:
File Description SizeFormat 
Cold_waves_getting_milder_northern_midlatitudes.pdf1.09 MBAdobe PDFView/Download


Items in OAR@Princeton are protected by copyright, with all rights reserved, unless otherwise indicated.