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  • Changes in winter warming events in the Nordic arctic region.

    Author(s) : Vikhamar-Schuler, D.Isaksen, K.Haugen, J. E.Tømmervik, H.Luks, B.Schuler, T. V.Bjerke, J. W.

    Author Affiliation : Norwegian Meteorological Institute, P.O. box 43, Blindern, 0313 Oslo, Norway.

    Author Email : dagrun@met.no

    Journal article : Journal of Climate 2016 Vol.29 No.17 pp.6223-6244 ref.many

    Abstract : In recent years extreme winterwinterSubject Category: Time Periods
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    winterSubject Category: Climate Related
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    warming events have been reported in arctic areas. These events are characterized as extraordinarily warm weatherweatherSubject Category: Climate Related
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    episodes, occasionally combined with intense rainfall, causing ecological disturbance and challenges for arctic societies and infrastructure. Ground-ice formationformationSubject Category: Miscellaneous
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    due to winter rainrainSubject Category: Climate Related
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    or meltingmeltingSubject Category: Miscellaneous
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    prevents ungulatesungulatesSubject Category: Organism Groups
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    from grazinggrazingSubject Category: Miscellaneous
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    , leads to vegetationvegetationSubject Category: Miscellaneous
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    browning, and impacts soil temperatures. The authors analyze changes in frequency and intensity of winter warming events in the Nordic arctic region - northern NorwaynorwaySubject Category: Geographic Entities
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    , SwedenswedenSubject Category: Geographic Entities
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    , and FinlandfinlandSubject Category: Geographic Entities
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    , including the arctic islandsislandsSubject Category: Topographic Features
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    Svalbard and Jan Mayen. This study identifies events in the longest available records of daily temperature and precipitationprecipitationSubject Category: Climate Related
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    , as well as in future climate scenarios, and performs analyses of long-term trendstrendsSubject Category: Properties
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    for climate indices aimed to capture these individual events. Results show high frequencies of warm weather events during the 1920s-30s and the past 15 years (2000-14), causing weak positive trends over the past 90 years (1924-2014). In contrast, strong positive trends in occurrence and intensity for all climate indices are found for the past 50 years with, for example, increased rates for number of melt days of up to 9.2 days decade-1 for the arctic islands and 3-7 days decade-1 for the arctic mainland. Regional projectionsprojectionsSubject Category: Miscellaneous
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    for the twenty-first century indicate a significant enhancement of the frequency and intensity of winter warming events. For northern ScandinaviascandinaviaSubject Category: Geographic Entities
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    , the simulations indicate a doubling in the number of warming events, compared to 1985-2014, while the projected frequencies for the arctic islands are up to 3 times higher.

    ISSN : 0894-8755

    DOI : 10.1175/JCLI-D-15-0763.1

    Record Number : 20163307880

    Publisher : American Meteorological Society

    Location of publication : Boston

    Country of publication : USA

    Language of text : English

    Indexing terms for this abstract:

    Organism descriptor(s) : mammalsmammalsSubject Category: Organism Names
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    Descriptor(s) : arctic regionsarctic regionsSubject Category: Miscellaneous
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    , characterizationcharacterizationSubject Category: Miscellaneous
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    , climateclimateSubject Category: Climate Related
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    , climate changeclimate changeSubject Category: Climate Related
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    , climatologyclimatologySubject Category: Disciplines, Occupations and Industries
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    , clubsclubsSubject Category: Institutions and Organisations
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    , formationformationSubject Category: Miscellaneous
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    , grazinggrazingSubject Category: Miscellaneous
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    , indexesindexesSubject Category: Miscellaneous
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    , islandsislandsSubject Category: Topographic Features
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    , meltingmeltingSubject Category: Miscellaneous
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    , meteorologymeteorologySubject Category: Disciplines, Occupations and Industries
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    , precipitationprecipitationSubject Category: Climate Related
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    , predictionpredictionSubject Category: Techniques, Methodologies and Equipment
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    , projectionsprojectionsSubject Category: Miscellaneous
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    , rainrainSubject Category: Climate Related
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    , snowsnowSubject Category: Climate Related
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    , snow coversnow coverSubject Category: Miscellaneous
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    , soil temperaturesoil temperatureSubject Category: Properties
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    , temperaturetemperatureSubject Category: Properties
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    , trendstrendsSubject Category: Properties
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    , ungulatesungulatesSubject Category: Organism Groups
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    , vegetationvegetationSubject Category: Miscellaneous
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    , weatherweatherSubject Category: Climate Related
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    , winterwinterSubject Category: Climate Related
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    Identifier(s) : climatic change, north polar regions, rainfall, societies

    Geographical Location(s) : FinlandfinlandSubject Category: Geographic Entities
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    , Nordic Countriesnordic countriesSubject Category: Geographic Entities
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    , NorwaynorwaySubject Category: Geographic Entities
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    , ScandinaviascandinaviaSubject Category: Geographic Entities
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    , SpitsbergenspitsbergenSubject Category: Geographic Entities
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    , SwedenswedenSubject Category: Geographic Entities
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    Broader term(s) : Developed Countriesdeveloped countriesSubject Category: Miscellaneous
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    , European Union Countrieseuropean union countriesSubject Category: Institutions and Organisations
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    , Nordic Countriesnordic countriesSubject Category: Geographic Entities
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    , Northern Europenorthern europeSubject Category: Geographic Entities
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    , EuropeeuropeSubject Category: Geographic Entities
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    , OECD Countriesoecd countriesSubject Category: Institutions and Organisations
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    , ScandinaviascandinaviaSubject Category: Geographic Entities
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    , NorwaynorwaySubject Category: Geographic Entities
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    , vertebratesvertebratesSubject Category: Organism Names
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    , ChordatachordataSubject Category: Organism Names
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    , animalsanimalsSubject Category: Organism Names
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    , eukaryoteseukaryotesSubject Category: Organism Names
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