The effect of warming climate on nutrient and solute export from the Greenland Ice Sheet
Glacial meltwater runoff is likely an important source of limiting nutrients for downstream primary producers. This has particular significance for regions surrounding the Greenland Ice Sheet, which discharges >400 km3 of meltwater annually. The Arctic is warming rapidly but the impact of higher...
Published in: | Geochemical Perspectives Letters |
---|---|
Main Authors: | , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2015
|
Subjects: | |
Online Access: | https://risweb.st-andrews.ac.uk/portal/en/researchoutput/the-effect-of-warming-climate-on-nutrient-and-solute-export-from-the-greenland-ice-sheet(d69e56dc-c900-4a66-9954-30d4e8cfb1cc).html https://doi.org/10.7185/geochemlet.1510 |
id |
ftunstandrewcris:oai:risweb.st-andrews.ac.uk:publications/d69e56dc-c900-4a66-9954-30d4e8cfb1cc |
---|---|
record_format |
openpolar |
spelling |
ftunstandrewcris:oai:risweb.st-andrews.ac.uk:publications/d69e56dc-c900-4a66-9954-30d4e8cfb1cc 2023-05-15T15:06:24+02:00 The effect of warming climate on nutrient and solute export from the Greenland Ice Sheet Hawkings, J. R. Wadham, J. L. Tranter, M. Lawson, E. Sole, A. Cowton, T. Tedstone, A. Bartholomew, I. Nienow, P. Chandler, D. Telling, J. 2015-06-23 https://risweb.st-andrews.ac.uk/portal/en/researchoutput/the-effect-of-warming-climate-on-nutrient-and-solute-export-from-the-greenland-ice-sheet(d69e56dc-c900-4a66-9954-30d4e8cfb1cc).html https://doi.org/10.7185/geochemlet.1510 eng eng info:eu-repo/semantics/openAccess Hawkings , J R , Wadham , J L , Tranter , M , Lawson , E , Sole , A , Cowton , T , Tedstone , A , Bartholomew , I , Nienow , P , Chandler , D & Telling , J 2015 , ' The effect of warming climate on nutrient and solute export from the Greenland Ice Sheet ' , Geochemical Perspectives Letters , vol. 1 , no. 1 , pp. 94-104 . https://doi.org/10.7185/geochemlet.1510 Glaciers Greenland Ice Sheet Chemical weathering Nutrient export Nutrient cycling Silica Phosphorus Nitrogen Climate change article 2015 ftunstandrewcris https://doi.org/10.7185/geochemlet.1510 2021-12-26T14:29:09Z Glacial meltwater runoff is likely an important source of limiting nutrients for downstream primary producers. This has particular significance for regions surrounding the Greenland Ice Sheet, which discharges >400 km3 of meltwater annually. The Arctic is warming rapidly but the impact of higher discharge on nutrient export is unknown. We present four years of hydrological and geochemical data from a large Greenland Ice Sheet catchment that includes the two highest melt years on record (2010, 2012). Measurements reveal significant variation in dissolved solute (major ion) and estimated dissolved macronutrient (nitrogen, phosphorus and silica) fluxes, with increases in higher melt years. Labile particulate macronutrients dominate nutrient export, accounting for ~50 % of nitrogen and >80 % of both phosphorus and silica. The response of ice sheet nutrient export to enhanced melting is largely controlled by particle bound nutrients, the future supply of which is uncertain. We propose that the Greenland Ice Sheet provides an underappreciated and annually dynamic source of nutrients for the polar oceans, with changes in meltwater discharge likely to impact marine primary productivity in future decades. Article in Journal/Newspaper Arctic Climate change Greenland Ice Sheet University of St Andrews: Research Portal Arctic Greenland Geochemical Perspectives Letters 94 104 |
institution |
Open Polar |
collection |
University of St Andrews: Research Portal |
op_collection_id |
ftunstandrewcris |
language |
English |
topic |
Glaciers Greenland Ice Sheet Chemical weathering Nutrient export Nutrient cycling Silica Phosphorus Nitrogen Climate change |
spellingShingle |
Glaciers Greenland Ice Sheet Chemical weathering Nutrient export Nutrient cycling Silica Phosphorus Nitrogen Climate change Hawkings, J. R. Wadham, J. L. Tranter, M. Lawson, E. Sole, A. Cowton, T. Tedstone, A. Bartholomew, I. Nienow, P. Chandler, D. Telling, J. The effect of warming climate on nutrient and solute export from the Greenland Ice Sheet |
topic_facet |
Glaciers Greenland Ice Sheet Chemical weathering Nutrient export Nutrient cycling Silica Phosphorus Nitrogen Climate change |
description |
Glacial meltwater runoff is likely an important source of limiting nutrients for downstream primary producers. This has particular significance for regions surrounding the Greenland Ice Sheet, which discharges >400 km3 of meltwater annually. The Arctic is warming rapidly but the impact of higher discharge on nutrient export is unknown. We present four years of hydrological and geochemical data from a large Greenland Ice Sheet catchment that includes the two highest melt years on record (2010, 2012). Measurements reveal significant variation in dissolved solute (major ion) and estimated dissolved macronutrient (nitrogen, phosphorus and silica) fluxes, with increases in higher melt years. Labile particulate macronutrients dominate nutrient export, accounting for ~50 % of nitrogen and >80 % of both phosphorus and silica. The response of ice sheet nutrient export to enhanced melting is largely controlled by particle bound nutrients, the future supply of which is uncertain. We propose that the Greenland Ice Sheet provides an underappreciated and annually dynamic source of nutrients for the polar oceans, with changes in meltwater discharge likely to impact marine primary productivity in future decades. |
format |
Article in Journal/Newspaper |
author |
Hawkings, J. R. Wadham, J. L. Tranter, M. Lawson, E. Sole, A. Cowton, T. Tedstone, A. Bartholomew, I. Nienow, P. Chandler, D. Telling, J. |
author_facet |
Hawkings, J. R. Wadham, J. L. Tranter, M. Lawson, E. Sole, A. Cowton, T. Tedstone, A. Bartholomew, I. Nienow, P. Chandler, D. Telling, J. |
author_sort |
Hawkings, J. R. |
title |
The effect of warming climate on nutrient and solute export from the Greenland Ice Sheet |
title_short |
The effect of warming climate on nutrient and solute export from the Greenland Ice Sheet |
title_full |
The effect of warming climate on nutrient and solute export from the Greenland Ice Sheet |
title_fullStr |
The effect of warming climate on nutrient and solute export from the Greenland Ice Sheet |
title_full_unstemmed |
The effect of warming climate on nutrient and solute export from the Greenland Ice Sheet |
title_sort |
effect of warming climate on nutrient and solute export from the greenland ice sheet |
publishDate |
2015 |
url |
https://risweb.st-andrews.ac.uk/portal/en/researchoutput/the-effect-of-warming-climate-on-nutrient-and-solute-export-from-the-greenland-ice-sheet(d69e56dc-c900-4a66-9954-30d4e8cfb1cc).html https://doi.org/10.7185/geochemlet.1510 |
geographic |
Arctic Greenland |
geographic_facet |
Arctic Greenland |
genre |
Arctic Climate change Greenland Ice Sheet |
genre_facet |
Arctic Climate change Greenland Ice Sheet |
op_source |
Hawkings , J R , Wadham , J L , Tranter , M , Lawson , E , Sole , A , Cowton , T , Tedstone , A , Bartholomew , I , Nienow , P , Chandler , D & Telling , J 2015 , ' The effect of warming climate on nutrient and solute export from the Greenland Ice Sheet ' , Geochemical Perspectives Letters , vol. 1 , no. 1 , pp. 94-104 . https://doi.org/10.7185/geochemlet.1510 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.7185/geochemlet.1510 |
container_title |
Geochemical Perspectives Letters |
container_start_page |
94 |
op_container_end_page |
104 |
_version_ |
1766338017716338688 |