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Attributing mortality from extreme temperatures to climate change in Stockholm, Sweden
Umeå universitet, Medicinska fakulteten, Institutionen för folkhälsa och klinisk medicin, Yrkes- och miljömedicin.
Umeå universitet, Medicinska fakulteten, Institutionen för folkhälsa och klinisk medicin, Yrkes- och miljömedicin.
Umeå universitet, Medicinska fakulteten, Institutionen för folkhälsa och klinisk medicin, Yrkes- och miljömedicin.
Umeå universitet, Medicinska fakulteten, Institutionen för folkhälsa och klinisk medicin, Epidemiologi och global hälsa. Umeå universitet, Medicinska fakulteten, Institutionen för folkhälsa och klinisk medicin, Yrkes- och miljömedicin.ORCID-id: 0000-0003-4030-0449
2013 (Engelska)Ingår i: Nature Climate Change, ISSN 1758-678X, E-ISSN 1758-6798, Vol. 3, nr 12, s. 1050-1054Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

A changing climate is increasing the frequency, intensity, duration and spatial extent of heat waves. These changes are associated with increased human mortality during heat extremes. At the other end of the temperature scale, it has been widely speculated that cold-related mortality could decrease in a warmer world. We aim to answer a key question; the extent to which mortality due to temperature extremes in Stockholm, Sweden during 1980–2009 can be attributed to climate change that has occurred since our reference period (1900–1929). Mortality from heat extremes in 1980–2009 was double what would have occurred without climate change. Although temperature shifted towards warmer temperatures in the winter season, cold extremes occurred more frequently, contributing to a small increase of mortality during the winter months. No evidence was found for adaptation over 1980–2009.

Ort, förlag, år, upplaga, sidor
Nature Publishing Group, 2013. Vol. 3, nr 12, s. 1050-1054
Nationell ämneskategori
Arbetsmedicin och miljömedicin Meteorologi och atmosfärforskning
Identifikatorer
URN: urn:nbn:se:umu:diva-83506DOI: 10.1038/nclimate2022ISI: 000330126300018OAI: oai:DiVA.org:umu-83506DiVA, id: diva2:668047
Forskningsfinansiär
Forte, Forskningsrådet för hälsa, arbetsliv och välfärd, FAS: 2009-0454Tillgänglig från: 2013-11-28 Skapad: 2013-11-28 Senast uppdaterad: 2018-06-08Bibliografiskt granskad
Ingår i avhandling
1. On temperature-related mortality in an elderly population and susceptible groups
Öppna denna publikation i ny flik eller fönster >>On temperature-related mortality in an elderly population and susceptible groups
2014 (Engelska)Doktorsavhandling, sammanläggning (Övrigt vetenskapligt)
Abstract [en]

Background: Climate change has increased the frequency, intensity, duration, and spatial extent of some extreme weather events, for instance heat waves. Societies today are experiencing an ongoing change in the population structure yielding an increasing proportion elderly due to increased longevity, resulting in higher prevalence of chronic and degenerative diseases. Literature suggests that the elderly and certain susceptible subgroups with chronic disease are among the most vulnerable to heat waves and elevated temperatures.

Aim: The main aims of this thesis were to expand the scientific knowledge on the short-term effects of extreme heat on mortality for the general population and certain susceptible groups in society, to investigate the development of this relationship over time and to attribute mortality to observed climate change.

Methods: Daily numbers of deaths and daily meteorological observations during three different periods were collected for present day Stockholm County, Sweden. The analyses of the relationship between mortality and temperature extremes were analysed using a time series approach. The regression models assumed the daily counts of mortality to follow an overdispersed Poisson distribution and adjustments were made for time-trends as well as confounding factors.

Results: The literature review of recent studies identified a strong relationship between heat and heat waves and increasing death rates among the elderly, particularly for respiratory and cardiovascular mortality. A statistically significant increase in total daily mortality during heat extremes in all decades investigated, as well as over the entire period, during the period 1901-2009 with a declining trend over time for the relative risk associated with heat extremes, was reported in paper II. For the period 1901-2009 cold extremes significantly increased mortality, with a more disperse pattern over individual decades and no declining trend over time. Paper III attributed increased mortality due to climate change between 1900-1929 and 1980-2009. This increase was mainly due to a large number of excess heat extremes in the latter time period. Furthermore certain subgroups of the population above 50, were in paper IV found to have significantly increased mortality during heat waves as compared to non-heat wave days.

Conclusions: Although the relative risk of dying during extreme temperature events appears to have fallen in Stockholm, Sweden, such events still pose a threat to public health. The elderly population and certain susceptible subgroups of the population experience higher relative risks of dying on heat waves days as compared to normal summer days. Some of the groups most susceptible during heat waves were identified. In order to minimize future impacts of heat waves on public health, identifying susceptible subgroups in an ageing society as well as develop strategies to reduce the impact of future temperature extremes on public health will be important.

Ort, förlag, år, upplaga, sidor
Umeå: Umeå universitet, 2014. s. 58
Serie
Umeå University medical dissertations, ISSN 0346-6612 ; 1658
Nyckelord
Heat-related mortality, attribution, elderly, susceptible groups
Nationell ämneskategori
Arbetsmedicin och miljömedicin
Forskningsämne
arbets- och miljömedicin
Identifikatorer
urn:nbn:se:umu:diva-89019 (URN)978-91-7601-066-2 (ISBN)
Disputation
2014-06-11, Triple Helix, Samverkanshuset, Umeå, 09:00 (Engelska)
Opponent
Handledare
Forskningsfinansiär
Forte, Forskningsrådet för hälsa, arbetsliv och välfärd, 2009-0454
Tillgänglig från: 2014-05-20 Skapad: 2014-05-19 Senast uppdaterad: 2018-06-07Bibliografiskt granskad

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Oudin Åström, DanielForsberg, BertilEbi, Kristie L.Rocklöv, Joacim

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Arbetsmedicin och miljömedicinMeteorologi och atmosfärforskning

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