Firn data compilation reveals widespread decrease of firn air content in western Greenland
A porous layer of multi-year snow known as firn covers the Greenland-ice-sheet interior. The firn layer buffers the ice-sheet contribution to sea-level rise by retaining a fraction of summer melt as liquid water and refrozen ice. In this study we quantify the Greenland ice-sheet firn air content (FA...
Published in: | The Cryosphere |
---|---|
Main Authors: | , , , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Copernicus Publications
2019
|
Subjects: | |
Online Access: | https://doi.org/10.5194/tc-13-845-2019 https://doaj.org/article/eb4b8959b0aa4486b514832fee75a5f8 |
id |
ftdoajarticles:oai:doaj.org/article:eb4b8959b0aa4486b514832fee75a5f8 |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:eb4b8959b0aa4486b514832fee75a5f8 2023-05-15T16:27:34+02:00 Firn data compilation reveals widespread decrease of firn air content in western Greenland B. Vandecrux M. MacFerrin H. Machguth W. T. Colgan D. van As A. Heilig C. M. Stevens C. Charalampidis R. S. Fausto E. M. Morris E. Mosley-Thompson L. Koenig L. N. Montgomery C. Miège S. B. Simonsen T. Ingeman-Nielsen J. E. Box 2019-03-01T00:00:00Z https://doi.org/10.5194/tc-13-845-2019 https://doaj.org/article/eb4b8959b0aa4486b514832fee75a5f8 EN eng Copernicus Publications https://www.the-cryosphere.net/13/845/2019/tc-13-845-2019.pdf https://doaj.org/toc/1994-0416 https://doaj.org/toc/1994-0424 doi:10.5194/tc-13-845-2019 1994-0416 1994-0424 https://doaj.org/article/eb4b8959b0aa4486b514832fee75a5f8 The Cryosphere, Vol 13, Pp 845-859 (2019) Environmental sciences GE1-350 Geology QE1-996.5 article 2019 ftdoajarticles https://doi.org/10.5194/tc-13-845-2019 2022-12-31T14:32:01Z A porous layer of multi-year snow known as firn covers the Greenland-ice-sheet interior. The firn layer buffers the ice-sheet contribution to sea-level rise by retaining a fraction of summer melt as liquid water and refrozen ice. In this study we quantify the Greenland ice-sheet firn air content (FAC), an indicator of meltwater retention capacity, based on 360 point observations. We quantify FAC in both the uppermost 10 m and the entire firn column before interpolating FAC over the entire ice-sheet firn area as an empirical function of long-term mean air temperature ( <math xmlns="http://www.w3.org/1998/Math/MathML" id="M1" display="inline" overflow="scroll" dspmath="mathml"><mover accent="true"><mrow><msub><mi>T</mi><mtext>a</mtext></msub></mrow><mo mathvariant="normal">‾</mo></mover></math> <svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="12pt" height="16pt" class="svg-formula" dspmath="mathimg" md5hash="3f34f2e28fd131f1588d0a4a19d8cca4"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="tc-13-845-2019-ie00001.svg" width="12pt" height="16pt" src="tc-13-845-2019-ie00001.png"/></svg:svg> ) and net snow accumulation ( <math xmlns="http://www.w3.org/1998/Math/MathML" id="M2" display="inline" overflow="scroll" dspmath="mathml"><mrow><mover accent="true"><mover accent="true"><mi>c</mi><mo mathvariant="normal">˙</mo></mover><mo mathvariant="normal">‾</mo></mover><mo>)</mo></mrow></math> <svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="12pt" height="15pt" class="svg-formula" dspmath="mathimg" md5hash="2467b5ce9e85c5b99553be3356b76c30"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="tc-13-845-2019-ie00002.svg" width="12pt" height="15pt" src="tc-13-845-2019-ie00002.png"/></svg:svg> . We estimate a total ice-sheet-wide FAC of 26 800±1840 km 3 , of which 6500±450 km ... Article in Journal/Newspaper Greenland Ice Sheet The Cryosphere Directory of Open Access Journals: DOAJ Articles Greenland The Cryosphere 13 3 845 859 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Environmental sciences GE1-350 Geology QE1-996.5 |
spellingShingle |
Environmental sciences GE1-350 Geology QE1-996.5 B. Vandecrux M. MacFerrin H. Machguth W. T. Colgan D. van As A. Heilig C. M. Stevens C. Charalampidis R. S. Fausto E. M. Morris E. Mosley-Thompson L. Koenig L. N. Montgomery C. Miège S. B. Simonsen T. Ingeman-Nielsen J. E. Box Firn data compilation reveals widespread decrease of firn air content in western Greenland |
topic_facet |
Environmental sciences GE1-350 Geology QE1-996.5 |
description |
A porous layer of multi-year snow known as firn covers the Greenland-ice-sheet interior. The firn layer buffers the ice-sheet contribution to sea-level rise by retaining a fraction of summer melt as liquid water and refrozen ice. In this study we quantify the Greenland ice-sheet firn air content (FAC), an indicator of meltwater retention capacity, based on 360 point observations. We quantify FAC in both the uppermost 10 m and the entire firn column before interpolating FAC over the entire ice-sheet firn area as an empirical function of long-term mean air temperature ( <math xmlns="http://www.w3.org/1998/Math/MathML" id="M1" display="inline" overflow="scroll" dspmath="mathml"><mover accent="true"><mrow><msub><mi>T</mi><mtext>a</mtext></msub></mrow><mo mathvariant="normal">‾</mo></mover></math> <svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="12pt" height="16pt" class="svg-formula" dspmath="mathimg" md5hash="3f34f2e28fd131f1588d0a4a19d8cca4"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="tc-13-845-2019-ie00001.svg" width="12pt" height="16pt" src="tc-13-845-2019-ie00001.png"/></svg:svg> ) and net snow accumulation ( <math xmlns="http://www.w3.org/1998/Math/MathML" id="M2" display="inline" overflow="scroll" dspmath="mathml"><mrow><mover accent="true"><mover accent="true"><mi>c</mi><mo mathvariant="normal">˙</mo></mover><mo mathvariant="normal">‾</mo></mover><mo>)</mo></mrow></math> <svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="12pt" height="15pt" class="svg-formula" dspmath="mathimg" md5hash="2467b5ce9e85c5b99553be3356b76c30"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="tc-13-845-2019-ie00002.svg" width="12pt" height="15pt" src="tc-13-845-2019-ie00002.png"/></svg:svg> . We estimate a total ice-sheet-wide FAC of 26 800±1840 km 3 , of which 6500±450 km ... |
format |
Article in Journal/Newspaper |
author |
B. Vandecrux M. MacFerrin H. Machguth W. T. Colgan D. van As A. Heilig C. M. Stevens C. Charalampidis R. S. Fausto E. M. Morris E. Mosley-Thompson L. Koenig L. N. Montgomery C. Miège S. B. Simonsen T. Ingeman-Nielsen J. E. Box |
author_facet |
B. Vandecrux M. MacFerrin H. Machguth W. T. Colgan D. van As A. Heilig C. M. Stevens C. Charalampidis R. S. Fausto E. M. Morris E. Mosley-Thompson L. Koenig L. N. Montgomery C. Miège S. B. Simonsen T. Ingeman-Nielsen J. E. Box |
author_sort |
B. Vandecrux |
title |
Firn data compilation reveals widespread decrease of firn air content in western Greenland |
title_short |
Firn data compilation reveals widespread decrease of firn air content in western Greenland |
title_full |
Firn data compilation reveals widespread decrease of firn air content in western Greenland |
title_fullStr |
Firn data compilation reveals widespread decrease of firn air content in western Greenland |
title_full_unstemmed |
Firn data compilation reveals widespread decrease of firn air content in western Greenland |
title_sort |
firn data compilation reveals widespread decrease of firn air content in western greenland |
publisher |
Copernicus Publications |
publishDate |
2019 |
url |
https://doi.org/10.5194/tc-13-845-2019 https://doaj.org/article/eb4b8959b0aa4486b514832fee75a5f8 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Ice Sheet The Cryosphere |
genre_facet |
Greenland Ice Sheet The Cryosphere |
op_source |
The Cryosphere, Vol 13, Pp 845-859 (2019) |
op_relation |
https://www.the-cryosphere.net/13/845/2019/tc-13-845-2019.pdf https://doaj.org/toc/1994-0416 https://doaj.org/toc/1994-0424 doi:10.5194/tc-13-845-2019 1994-0416 1994-0424 https://doaj.org/article/eb4b8959b0aa4486b514832fee75a5f8 |
op_doi |
https://doi.org/10.5194/tc-13-845-2019 |
container_title |
The Cryosphere |
container_volume |
13 |
container_issue |
3 |
container_start_page |
845 |
op_container_end_page |
859 |
_version_ |
1766016975151038464 |