Northern hemisphere ice sheets and planetary waves: A strong feedback mechanism
Abstract We carried out a statistical analysis of the relation between the net mass balance of high‐latitude glaciers and 500 mb height deviations of the seasonal mean atmosphere. Mass‐balance series of 23 glaciers and ice caps were used, ranging in length from 8 to 30 yr. Considering the sample as...
Published in: | Journal of Climatology |
---|---|
Main Authors: | , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Wiley
1987
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1002/joc.3370070202 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjoc.3370070202 https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1002/joc.3370070202 |
id |
crwiley:10.1002/joc.3370070202 |
---|---|
record_format |
openpolar |
spelling |
crwiley:10.1002/joc.3370070202 2024-06-02T08:08:17+00:00 Northern hemisphere ice sheets and planetary waves: A strong feedback mechanism Lindeman, M. Oerlemans, J. 1987 http://dx.doi.org/10.1002/joc.3370070202 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjoc.3370070202 https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1002/joc.3370070202 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Climatology volume 7, issue 2, page 109-117 ISSN 0196-1748 journal-article 1987 crwiley https://doi.org/10.1002/joc.3370070202 2024-05-03T11:23:44Z Abstract We carried out a statistical analysis of the relation between the net mass balance of high‐latitude glaciers and 500 mb height deviations of the seasonal mean atmosphere. Mass‐balance series of 23 glaciers and ice caps were used, ranging in length from 8 to 30 yr. Considering the sample as a whole, it appeared that the only significant predictor for mass balance variations is the summer anomaly of the 500mb height. Except for a few individual glaciers, correlations with mean vorticity and meridional wind component turned out to be insignificant. To investigate the potential feedback between ice‐age ice sheets and planetary waves, we used a stationary two‐layer atmospheric model to calculate the response to the CLIMAP (1976) ice‐sheet topography for 18,000 YBP. Combining the result with the statistical analysis reveals that the feedback is important: the planetary‐wave pattern forced by the ice sheets leads to deviations of the equilibrium‐line altitude of about 500m. Article in Journal/Newspaper Ice Sheet Wiley Online Library Journal of Climatology 7 2 109 117 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
Abstract We carried out a statistical analysis of the relation between the net mass balance of high‐latitude glaciers and 500 mb height deviations of the seasonal mean atmosphere. Mass‐balance series of 23 glaciers and ice caps were used, ranging in length from 8 to 30 yr. Considering the sample as a whole, it appeared that the only significant predictor for mass balance variations is the summer anomaly of the 500mb height. Except for a few individual glaciers, correlations with mean vorticity and meridional wind component turned out to be insignificant. To investigate the potential feedback between ice‐age ice sheets and planetary waves, we used a stationary two‐layer atmospheric model to calculate the response to the CLIMAP (1976) ice‐sheet topography for 18,000 YBP. Combining the result with the statistical analysis reveals that the feedback is important: the planetary‐wave pattern forced by the ice sheets leads to deviations of the equilibrium‐line altitude of about 500m. |
format |
Article in Journal/Newspaper |
author |
Lindeman, M. Oerlemans, J. |
spellingShingle |
Lindeman, M. Oerlemans, J. Northern hemisphere ice sheets and planetary waves: A strong feedback mechanism |
author_facet |
Lindeman, M. Oerlemans, J. |
author_sort |
Lindeman, M. |
title |
Northern hemisphere ice sheets and planetary waves: A strong feedback mechanism |
title_short |
Northern hemisphere ice sheets and planetary waves: A strong feedback mechanism |
title_full |
Northern hemisphere ice sheets and planetary waves: A strong feedback mechanism |
title_fullStr |
Northern hemisphere ice sheets and planetary waves: A strong feedback mechanism |
title_full_unstemmed |
Northern hemisphere ice sheets and planetary waves: A strong feedback mechanism |
title_sort |
northern hemisphere ice sheets and planetary waves: a strong feedback mechanism |
publisher |
Wiley |
publishDate |
1987 |
url |
http://dx.doi.org/10.1002/joc.3370070202 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjoc.3370070202 https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1002/joc.3370070202 |
genre |
Ice Sheet |
genre_facet |
Ice Sheet |
op_source |
Journal of Climatology volume 7, issue 2, page 109-117 ISSN 0196-1748 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/joc.3370070202 |
container_title |
Journal of Climatology |
container_volume |
7 |
container_issue |
2 |
container_start_page |
109 |
op_container_end_page |
117 |
_version_ |
1800753483636277248 |