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reference : Sensitivity of 21st century sea level to ocean-induced thinning of Pine Island Glacier, Antarctica

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Sensitivity of 21st century sea level to ocean-induced thinning of Pine Island Glacier, Antarctica
Bibliographic fields
reftype Journal Article
Abstract Pine Island Glacier (PIG), Antarctica, is rapidly losing mass, supporting arguments that it may play a major role in 21st century sea-level rise. Yet this glacier's quantitative contribution to sea level based on theoretical and computational models is poorly known. We have developed a basin-scale glaciological model to examine the sensitivity of PIG to a range of environmental forcings. While oceanic melt likely played the leading role in recent thinning and retreat, we find that the particular grounding-line geometry with an extended ice plain in the 1990s made it susceptible to such forcing. Our model further indicates that while the rate of grounding-line retreat should diminish soon, the glacier's mass loss may continue at rates similar to, or moderately elevated from, the present. While substantial, our model-derived maximum rate of 2.7 cm/century is considerably smaller than previous heuristically-derived bounds on the sea-level contribution.
Author Joughin, Ian Smith, Benjamin E. Holland, David M.
DOI 10.1029/2010GL044819
ISSN 0094-8276
Issue 20
Journal Geophysical Research Letters
Keywords ice streams; ice sheets; Pine Island Glacier; Antarctica; 0726 Cryosphere: Ice sheets; 0728 Cryosphere: Ice shelves; 0730 Cryosphere: Ice streams; 9310 Geographic Location: Antarctica; 0776 Cryosphere: Glaciology
Pages L20502
Title Sensitivity of 21st century sea level to ocean-induced thinning of Pine Island Glacier, Antarctica
URL http://onlinelibrary.wiley.com/doi/10.1029/2010GL044819/pdf
Volume 37
Year 2010
Bibliographic identifiers
.publisher AGU
.reference_type 0
_chapter ["Ch. 2: Our Changing Climate FINAL"]
_record_number 1524
_uuid b180c1e1-b9a8-47a6-8dad-e3cc3083b0ad