Abstract:
:Melting of the Greenland Ice Sheet is a leading cause of land-ice mass loss and cryosphere-attributed sea level rise. Blooms of pigmented glacier ice algae lower ice albedo and accelerate surface melting in the ice sheet's southwest sector. Although glacier ice algae cause up to 13% of the surface melting in this region, the controls on bloom development remain poorly understood. Here we show a direct link between mineral phosphorus in surface ice and glacier ice algae biomass through the quantification of solid and fluid phase phosphorus reservoirs in surface habitats across the southwest ablation zone of the ice sheet. We demonstrate that nutrients from mineral dust likely drive glacier ice algal growth, and thereby identify mineral dust as a secondary control on ice sheet melting.
journal_name
Nat Communjournal_title
Nature communicationsauthors
McCutcheon J,Lutz S,Williamson C,Cook JM,Tedstone AJ,Vanderstraeten A,Wilson SA,Stockdale A,Bonneville S,Anesio AM,Yallop ML,McQuaid JB,Tranter M,Benning LGdoi
10.1038/s41467-020-20627-wsubject
Has Abstractpub_date
2021-01-25 00:00:00pages
570issue
1issn
2041-1723pii
10.1038/s41467-020-20627-wjournal_volume
12pub_type
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