Observed and modeled Greenland ice sheet snow accumulation, 1958-2003, and links with regional climate forcing
Author Posting. © American Meteorological Society 2006. This article is posted here by permission of American Meteorological Society for personal use, not for redistribution. The definitive version was published in Journal of Climate 19 (2006): 344–358, doi:10.1175/JCLI3615.1. Annual and monthly sno...
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ftwhoas:oai:darchive.mblwhoilibrary.org:1912/4172 2023-05-15T16:25:08+02:00 Observed and modeled Greenland ice sheet snow accumulation, 1958-2003, and links with regional climate forcing Hanna, Edward McConnell, Joseph R. Das, Sarah B. Cappelen, John Stephens, Ag 2006-02-01 application/pdf https://hdl.handle.net/1912/4172 en_US eng American Meteorological Society https://doi.org/10.1175/JCLI3615.1 Journal of Climate 19 (2006): 344-358 https://hdl.handle.net/1912/4172 doi:10.1175/JCLI3615.1 Journal of Climate 19 (2006): 344-358 doi:10.1175/JCLI3615.1 Article 2006 ftwhoas https://doi.org/10.1175/JCLI3615.1 2022-05-28T22:58:13Z Author Posting. © American Meteorological Society 2006. This article is posted here by permission of American Meteorological Society for personal use, not for redistribution. The definitive version was published in Journal of Climate 19 (2006): 344–358, doi:10.1175/JCLI3615.1. Annual and monthly snow accumulation for the Greenland Ice Sheet was derived from ECMWF forecasts [mainly 40-yr ECMWR Re-Analysis (ERA-40)] and further meteorological modeling. Modeled accumulation was validated using 58 ice core accumulation datasets across the ice sheet and was found to be 95% of the observed accumulation on average, with a mean correlation of 0.53 between modeled and observed. Many of the ice core datasets are new and are presented here for the first time. Central and northern interior parts of the ice sheet were found to be 10%–30% too dry in ERA-40, in line with earlier ECMWF analysis, although too much (>50% locally) snow accumulation was modeled for interior southern parts of Greenland. Nevertheless, 47 of 58 sites show significant correlation in temporal variability of modeled with observed accumulation. The model also captures the absolute amount of snow accumulation at several sites, most notably Das1 and Das2 in southeast Greenland. Mean modeled accumulation over the ice sheet was 0.279 (standard deviation 0.034) m yr−1 for 1958–2003 with no significant trend for either the ice sheet or any of the core sites. Unusually high accumulation in southeast Greenland in 2002/03 leads the authors to study meteorological synoptic forcing patterns and comment on the prospect of enhanced climate variability leading to more such events as a result of global warming. There is good agreement between precipitation measured at coastal meteorological stations in southern Greenland and accumulation modeled for adjacent regions of the ice sheet. There is no significant persistent relation between the North Atlantic Oscillation index and whole or southern Greenland accumulation. JM acknowledges support from NASA’s Cryospheric ... Article in Journal/Newspaper Greenland ice core Ice Sheet North Atlantic North Atlantic oscillation Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) Greenland Journal of Climate 19 3 344 358 |
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Open Polar |
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Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) |
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ftwhoas |
language |
English |
description |
Author Posting. © American Meteorological Society 2006. This article is posted here by permission of American Meteorological Society for personal use, not for redistribution. The definitive version was published in Journal of Climate 19 (2006): 344–358, doi:10.1175/JCLI3615.1. Annual and monthly snow accumulation for the Greenland Ice Sheet was derived from ECMWF forecasts [mainly 40-yr ECMWR Re-Analysis (ERA-40)] and further meteorological modeling. Modeled accumulation was validated using 58 ice core accumulation datasets across the ice sheet and was found to be 95% of the observed accumulation on average, with a mean correlation of 0.53 between modeled and observed. Many of the ice core datasets are new and are presented here for the first time. Central and northern interior parts of the ice sheet were found to be 10%–30% too dry in ERA-40, in line with earlier ECMWF analysis, although too much (>50% locally) snow accumulation was modeled for interior southern parts of Greenland. Nevertheless, 47 of 58 sites show significant correlation in temporal variability of modeled with observed accumulation. The model also captures the absolute amount of snow accumulation at several sites, most notably Das1 and Das2 in southeast Greenland. Mean modeled accumulation over the ice sheet was 0.279 (standard deviation 0.034) m yr−1 for 1958–2003 with no significant trend for either the ice sheet or any of the core sites. Unusually high accumulation in southeast Greenland in 2002/03 leads the authors to study meteorological synoptic forcing patterns and comment on the prospect of enhanced climate variability leading to more such events as a result of global warming. There is good agreement between precipitation measured at coastal meteorological stations in southern Greenland and accumulation modeled for adjacent regions of the ice sheet. There is no significant persistent relation between the North Atlantic Oscillation index and whole or southern Greenland accumulation. JM acknowledges support from NASA’s Cryospheric ... |
format |
Article in Journal/Newspaper |
author |
Hanna, Edward McConnell, Joseph R. Das, Sarah B. Cappelen, John Stephens, Ag |
spellingShingle |
Hanna, Edward McConnell, Joseph R. Das, Sarah B. Cappelen, John Stephens, Ag Observed and modeled Greenland ice sheet snow accumulation, 1958-2003, and links with regional climate forcing |
author_facet |
Hanna, Edward McConnell, Joseph R. Das, Sarah B. Cappelen, John Stephens, Ag |
author_sort |
Hanna, Edward |
title |
Observed and modeled Greenland ice sheet snow accumulation, 1958-2003, and links with regional climate forcing |
title_short |
Observed and modeled Greenland ice sheet snow accumulation, 1958-2003, and links with regional climate forcing |
title_full |
Observed and modeled Greenland ice sheet snow accumulation, 1958-2003, and links with regional climate forcing |
title_fullStr |
Observed and modeled Greenland ice sheet snow accumulation, 1958-2003, and links with regional climate forcing |
title_full_unstemmed |
Observed and modeled Greenland ice sheet snow accumulation, 1958-2003, and links with regional climate forcing |
title_sort |
observed and modeled greenland ice sheet snow accumulation, 1958-2003, and links with regional climate forcing |
publisher |
American Meteorological Society |
publishDate |
2006 |
url |
https://hdl.handle.net/1912/4172 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland ice core Ice Sheet North Atlantic North Atlantic oscillation |
genre_facet |
Greenland ice core Ice Sheet North Atlantic North Atlantic oscillation |
op_source |
Journal of Climate 19 (2006): 344-358 doi:10.1175/JCLI3615.1 |
op_relation |
https://doi.org/10.1175/JCLI3615.1 Journal of Climate 19 (2006): 344-358 https://hdl.handle.net/1912/4172 doi:10.1175/JCLI3615.1 |
op_doi |
https://doi.org/10.1175/JCLI3615.1 |
container_title |
Journal of Climate |
container_volume |
19 |
container_issue |
3 |
container_start_page |
344 |
op_container_end_page |
358 |
_version_ |
1766013831875657728 |