Climate patterns during former periods of mountain glaciation in Britain and Ireland: Inferences from the cirque record

Iestyn D. Barr, Jeremy C. Ely, Matteo Spagnolo, Chris D. Clark, Ian S. Evans, Xavier M. Pellicer, Ramón Pellitero, Brice R. Rea

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Abstract

We map glacial cirques, and analyse spatial variability in their altitude and aspect to derive a long-term, time-integrated, perspective on climate patterns during former periods of mountain glaciation (likely spanning multiple Quaternary glaciations) in Britain and Ireland. The data reveal that, although air temperatures were important, exposure to moisture-bearing air masses was the key factor in regulating sites of former mountain glacier formation, and indicate that during such periods, moisture supply was largely controlled by North Atlantic westerlies, with notable inland precipitation gradients (precipitation decreasing inland), similar to present day. In places, trends in cirque altitude may also reflect regional differences in the extent of cirque deepening, controlled by the dimensions and dynamics of the glaciers that came to occupy them. Specifically, comparatively deep cirques in coastal locations may reflect the former presence of dynamic (fed by moisture from the North Atlantic), but comparatively small, glaciers (largely confined to their cirques). By contrast, decreasing cirque depth further inland, may reflect the former presence of larger and/or less dynamic ice masses, occupying comparatively continental climatic conditions.

Original languageEnglish
Pages (from-to)466-475
Number of pages10
JournalPalaeogeography, Palaeoclimatology, Palaeoecology
Volume485
Early online date4 Jul 2017
DOIs
Publication statusPublished - 1 Nov 2017

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cirque
glaciation
glaciers
Ireland
United Kingdom
glacier
moisture
mountains
climate
mountain
air mass
air temperature
ice
air

Keywords

  • Glacial cirque
  • Glaciation
  • NE Atlantic
  • Precipitation
  • Quaternary

ASJC Scopus subject areas

  • Oceanography
  • Ecology, Evolution, Behavior and Systematics
  • Earth-Surface Processes
  • Palaeontology

Cite this

Climate patterns during former periods of mountain glaciation in Britain and Ireland : Inferences from the cirque record. / Barr, Iestyn D.; Ely, Jeremy C.; Spagnolo, Matteo; Clark, Chris D.; Evans, Ian S.; Pellicer, Xavier M.; Pellitero, Ramón; Rea, Brice R.

In: Palaeogeography, Palaeoclimatology, Palaeoecology, Vol. 485, 01.11.2017, p. 466-475.

Research output: Contribution to journalArticle

Barr, Iestyn D. ; Ely, Jeremy C. ; Spagnolo, Matteo ; Clark, Chris D. ; Evans, Ian S. ; Pellicer, Xavier M. ; Pellitero, Ramón ; Rea, Brice R. / Climate patterns during former periods of mountain glaciation in Britain and Ireland : Inferences from the cirque record. In: Palaeogeography, Palaeoclimatology, Palaeoecology. 2017 ; Vol. 485. pp. 466-475.
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