Greenland Ice Sheet late-season melt: investigating multi-scale drivers of K-transect events
One consequence of recent Arctic warming is an increased occurrence and longer seasonality of above-freezing air temperature episodes.There is significant disagreement in the literature concerning potential physical connectivity between high-latitude open water duration proximate to the Greenland Ic...
Published in: | The Cryosphere |
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Format: | Article in Journal/Newspaper |
Language: | English |
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European Geosciences Union (EGU)
2019
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Online Access: | https://eprints.lincoln.ac.uk/id/eprint/34614/ https://eprints.lincoln.ac.uk/id/eprint/34614/1/tc-2018-285.pdf https://doi.org/10.5194/tc-13-2241-2019 |
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ftulincoln:oai:eprints.lincoln.ac.uk:34614 2023-05-15T15:10:40+02:00 Greenland Ice Sheet late-season melt: investigating multi-scale drivers of K-transect events Ballinger, T.J. Mote, T.L. Mattingly, K. Bliss, A.C. Hanna, Edward van As, D. Prieto, M. Gharehchahi, S. Fettweis, X. Noël, B. Smeets, P.C.J.P. Reijmer, C.H. Ribergaard, M.H. Cappelen, J. 2019-08-30 application/pdf https://eprints.lincoln.ac.uk/id/eprint/34614/ https://eprints.lincoln.ac.uk/id/eprint/34614/1/tc-2018-285.pdf https://doi.org/10.5194/tc-13-2241-2019 en eng European Geosciences Union (EGU) https://eprints.lincoln.ac.uk/id/eprint/34614/1/tc-2018-285.pdf Ballinger, T.J., Mote, T.L., Mattingly, K., Bliss, A.C., Hanna, Edward, van As, D., Prieto, M., Gharehchahi, S., Fettweis, X., Noël, B., Smeets, P.C.J.P., Reijmer, C.H., Ribergaard, M.H. and Cappelen, J. (2019) Greenland Ice Sheet late-season melt: investigating multi-scale drivers of K-transect events. Cryosphere, 13 (8). pp. 2241-2257. ISSN 1994-0416 doi:10.5194/tc-13-2241-2019 cc_by4 CC-BY F860 Climatology Article PeerReviewed 2019 ftulincoln https://doi.org/10.5194/tc-13-2241-2019 2022-03-02T20:11:13Z One consequence of recent Arctic warming is an increased occurrence and longer seasonality of above-freezing air temperature episodes.There is significant disagreement in the literature concerning potential physical connectivity between high-latitude open water duration proximate to the Greenland Ice Sheet (GrIS) and unseasonal (i.e. late summer and autumn) GrIS melt events. Here, a new date of sea ice advance (DOA) product is used to determine the occurrence of Baffin Bay sea ice growth along Greenland’s west coast for the 2011–2015 period. For the unseasonal melt period preceding the DOA, northwest Atlantic Ocean and atmospheric conditions are analyzed and linked to unseasonal melt events observed at a series of on-ice automatic weather stations (AWS) along the K-transect in southwest Greenland. Mesoscale and synoptic influences on the above and below freezing surface air temperature events are assessed through analyses of AWS wind, pressure, and humidity observations. These surface observations are further compared against Modèle Atmosphérique Régional (MAR), Regional Atmospheric Climate Model (RACMO2), and ERA-Interim reanalysis fields to understand the airmass origins and (thermo)dynamic drivers of the melt events. Results suggest that the K-transect late season, ablation zone melt events are strongly affected by ridging atmospheric circulation patterns that transport warm, moist air from the sub-polar North Atlantic toward west Greenland. While thermal conduction and advection off south Baffin Bayopen waters impact coastal air temperatures, consistent with previous studies, marine air incursions from Baffin Bay onto the ice sheet are obstructed by barrier flows and the pressure gradient-driven katabatic regime along the western GrIS margin. Article in Journal/Newspaper Arctic Baffin Bay Baffin Bay Baffin Greenland Ice Sheet North Atlantic Northwest Atlantic Sea ice University of Lincoln: Lincoln Repository Arctic Baffin Bay Greenland The Cryosphere 13 8 2241 2257 |
institution |
Open Polar |
collection |
University of Lincoln: Lincoln Repository |
op_collection_id |
ftulincoln |
language |
English |
topic |
F860 Climatology |
spellingShingle |
F860 Climatology Ballinger, T.J. Mote, T.L. Mattingly, K. Bliss, A.C. Hanna, Edward van As, D. Prieto, M. Gharehchahi, S. Fettweis, X. Noël, B. Smeets, P.C.J.P. Reijmer, C.H. Ribergaard, M.H. Cappelen, J. Greenland Ice Sheet late-season melt: investigating multi-scale drivers of K-transect events |
topic_facet |
F860 Climatology |
description |
One consequence of recent Arctic warming is an increased occurrence and longer seasonality of above-freezing air temperature episodes.There is significant disagreement in the literature concerning potential physical connectivity between high-latitude open water duration proximate to the Greenland Ice Sheet (GrIS) and unseasonal (i.e. late summer and autumn) GrIS melt events. Here, a new date of sea ice advance (DOA) product is used to determine the occurrence of Baffin Bay sea ice growth along Greenland’s west coast for the 2011–2015 period. For the unseasonal melt period preceding the DOA, northwest Atlantic Ocean and atmospheric conditions are analyzed and linked to unseasonal melt events observed at a series of on-ice automatic weather stations (AWS) along the K-transect in southwest Greenland. Mesoscale and synoptic influences on the above and below freezing surface air temperature events are assessed through analyses of AWS wind, pressure, and humidity observations. These surface observations are further compared against Modèle Atmosphérique Régional (MAR), Regional Atmospheric Climate Model (RACMO2), and ERA-Interim reanalysis fields to understand the airmass origins and (thermo)dynamic drivers of the melt events. Results suggest that the K-transect late season, ablation zone melt events are strongly affected by ridging atmospheric circulation patterns that transport warm, moist air from the sub-polar North Atlantic toward west Greenland. While thermal conduction and advection off south Baffin Bayopen waters impact coastal air temperatures, consistent with previous studies, marine air incursions from Baffin Bay onto the ice sheet are obstructed by barrier flows and the pressure gradient-driven katabatic regime along the western GrIS margin. |
format |
Article in Journal/Newspaper |
author |
Ballinger, T.J. Mote, T.L. Mattingly, K. Bliss, A.C. Hanna, Edward van As, D. Prieto, M. Gharehchahi, S. Fettweis, X. Noël, B. Smeets, P.C.J.P. Reijmer, C.H. Ribergaard, M.H. Cappelen, J. |
author_facet |
Ballinger, T.J. Mote, T.L. Mattingly, K. Bliss, A.C. Hanna, Edward van As, D. Prieto, M. Gharehchahi, S. Fettweis, X. Noël, B. Smeets, P.C.J.P. Reijmer, C.H. Ribergaard, M.H. Cappelen, J. |
author_sort |
Ballinger, T.J. |
title |
Greenland Ice Sheet late-season melt: investigating multi-scale drivers of K-transect events |
title_short |
Greenland Ice Sheet late-season melt: investigating multi-scale drivers of K-transect events |
title_full |
Greenland Ice Sheet late-season melt: investigating multi-scale drivers of K-transect events |
title_fullStr |
Greenland Ice Sheet late-season melt: investigating multi-scale drivers of K-transect events |
title_full_unstemmed |
Greenland Ice Sheet late-season melt: investigating multi-scale drivers of K-transect events |
title_sort |
greenland ice sheet late-season melt: investigating multi-scale drivers of k-transect events |
publisher |
European Geosciences Union (EGU) |
publishDate |
2019 |
url |
https://eprints.lincoln.ac.uk/id/eprint/34614/ https://eprints.lincoln.ac.uk/id/eprint/34614/1/tc-2018-285.pdf https://doi.org/10.5194/tc-13-2241-2019 |
geographic |
Arctic Baffin Bay Greenland |
geographic_facet |
Arctic Baffin Bay Greenland |
genre |
Arctic Baffin Bay Baffin Bay Baffin Greenland Ice Sheet North Atlantic Northwest Atlantic Sea ice |
genre_facet |
Arctic Baffin Bay Baffin Bay Baffin Greenland Ice Sheet North Atlantic Northwest Atlantic Sea ice |
op_relation |
https://eprints.lincoln.ac.uk/id/eprint/34614/1/tc-2018-285.pdf Ballinger, T.J., Mote, T.L., Mattingly, K., Bliss, A.C., Hanna, Edward, van As, D., Prieto, M., Gharehchahi, S., Fettweis, X., Noël, B., Smeets, P.C.J.P., Reijmer, C.H., Ribergaard, M.H. and Cappelen, J. (2019) Greenland Ice Sheet late-season melt: investigating multi-scale drivers of K-transect events. Cryosphere, 13 (8). pp. 2241-2257. ISSN 1994-0416 doi:10.5194/tc-13-2241-2019 |
op_rights |
cc_by4 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.5194/tc-13-2241-2019 |
container_title |
The Cryosphere |
container_volume |
13 |
container_issue |
8 |
container_start_page |
2241 |
op_container_end_page |
2257 |
_version_ |
1766341654079340544 |