Vis enkel innførsel

dc.contributor.authorKjær, Kurt H.
dc.contributor.authorBjørk, Anders A.
dc.contributor.authorKjeldsen, Kristian K.
dc.contributor.authorHansen, Eric S.
dc.contributor.authorAndresen, Camilla S.
dc.contributor.authorSiggaard-Andersen, Marie-Louise
dc.contributor.authorKhan, Shfaqat Abbas
dc.contributor.authorSøndergaard, Anne Sofie
dc.contributor.authorColgan, William
dc.contributor.authorSchomacker, Anders
dc.contributor.authorWoodroffe, Sarah
dc.contributor.authorFunder, Svend
dc.contributor.authorRouillard, Alexandra
dc.contributor.authorJensen, Jens Fog
dc.contributor.authorLarsen, Nicolaj K.
dc.date.accessioned2022-03-16T13:09:18Z
dc.date.available2022-03-16T13:09:18Z
dc.date.issued2022-03-04
dc.description.abstractIn the Northern Hemisphere, an insolation driven Early to Middle Holocene Thermal Maximum was followed by a Neoglacial cooling that culminated during the Little Ice Age (LIA). Here, we review the glacier response to this Neoglacial cooling in Greenland. Changes in the ice margins of outlet glaciers from the Greenland Ice Sheet as well as local glaciers and ice caps are synthesized Greenland-wide. In addition, we compare temperature reconstructions from ice cores, elevation changes of the ice sheet across Greenland and oceanographic reconstructions from marine sediment cores over the past 5,000 years. The data are derived from a comprehensive review of the literature supplemented with unpublished reports. Our review provides a synthesis of the sensitivity of the Greenland ice margins and their variability, which is critical to understanding how Neoglacial glacier activity was interrupted by the current anthropogenic warming. We have reconstructed three distinct periods of glacier expansion from our compilation: two older Neoglacial advances at 2,500 – 1,700 yrs. BP (Before Present = 1950 CE, Common Era) and 1,250 – 950 yrs. BP; followed by a general advance during the younger Neoglacial between 700-50 yrs. BP, which represents the LIA. There is still insufficient data to outline the detailed spatiotemporal relationships between these periods of glacier expansion. Many glaciers advanced early in the Neoglacial and persisted in close proximity to their present-day position until the end of the LIA. Thus, the LIA response to Northern Hemisphere cooling must be seen within the wider context of the entire Neoglacial period of the past 5,000 years. Ice expansion appears to be closely linked to changes in ice sheet elevation, accumulation, and temperature as well as surface-water cooling in the surrounding oceans. At least for the two youngest Neoglacial advances, volcanic forcing triggering a sea-ice /ocean feedback, could explain their initiation. There are probably several LIA glacier fluctuations since the first culmination close to 1250 CE (Common Era) and available data suggests ice culminations in the 1400s, early to mid-1700s and early to mid-1800s CE. The last LIA maxima lasted until the present deglaciation commenced around 50 yrs. BP (1900 CE). The constraints provided here on the timing and magnitude of LIA glacier fluctuations delivers a more realistic background validation for modelling future ice sheet stability.en_US
dc.identifier.citationKjær, Bjørk, Kjeldsen, Hansen, Andresen, Siggaard-Andersen, Khan, Søndergaard, Colgan, Schomacker, Woodroffe, Funder, Rouillard, Jensen, Larsen. Glacier response to the Little Ice Age during the Neoglacial cooling in Greenland. Earth-Science Reviews. 2022;227:1-43en_US
dc.identifier.cristinIDFRIDAID 2010043
dc.identifier.doi10.1016/j.earscirev.2022.103984
dc.identifier.issn0012-8252
dc.identifier.issn1872-6828
dc.identifier.urihttps://hdl.handle.net/10037/24428
dc.language.isoengen_US
dc.publisherElsevieren_US
dc.relation.journalEarth-Science Reviews
dc.relation.projectIDNorges forskningsråd: 294929en_US
dc.rights.accessRightsopenAccessen_US
dc.rights.holderCopyright 2022 The Author(s)en_US
dc.titleGlacier response to the Little Ice Age during the Neoglacial cooling in Greenlanden_US
dc.type.versionpublishedVersionen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


Tilhørende fil(er)

Thumbnail

Denne innførselen finnes i følgende samling(er)

Vis enkel innførsel