A global climatology of the ocean surface during the Last Glacial Maximum mapped on a regular grid (GLOMAP)
We present a climatology of the sea-surface temperature (SST) anomaly and the sea-ice extent during the Last Glacial Maximum (LGM, 23 000–19 000 years before present) mapped on a global regular 1° × 1° grid. It is an extension of the Glacial Atlantic Ocean Mapping (GLAMAP) reconstruction of the Atla...
Main Authors: | , , , |
---|---|
Format: | Text |
Language: | English |
Published: |
2020
|
Subjects: | |
Online Access: | https://doi.org/10.5194/cp-2019-154 https://cp.copernicus.org/preprints/cp-2019-154/ |
id |
ftcopernicus:oai:publications.copernicus.org:cpd82476 |
---|---|
record_format |
openpolar |
spelling |
ftcopernicus:oai:publications.copernicus.org:cpd82476 2023-05-15T18:17:52+02:00 A global climatology of the ocean surface during the Last Glacial Maximum mapped on a regular grid (GLOMAP) Paul, André Mulitza, Stefan Stein, Rüdiger Werner, Martin 2020-02-19 application/pdf https://doi.org/10.5194/cp-2019-154 https://cp.copernicus.org/preprints/cp-2019-154/ eng eng doi:10.5194/cp-2019-154 https://cp.copernicus.org/preprints/cp-2019-154/ eISSN: 1814-9332 Text 2020 ftcopernicus https://doi.org/10.5194/cp-2019-154 2020-07-20T16:22:25Z We present a climatology of the sea-surface temperature (SST) anomaly and the sea-ice extent during the Last Glacial Maximum (LGM, 23 000–19 000 years before present) mapped on a global regular 1° × 1° grid. It is an extension of the Glacial Atlantic Ocean Mapping (GLAMAP) reconstruction of the Atlantic SST based on the results of the Multiproxy Approach for the Reconstruction of the Glacial Ocean Surface (MARGO) project and several recent estimates of the LGM sea-ice extent. Such a gridded climatology is highly useful for the visualization of the LGM climate, calculation of global and regional SST averages and estimation of the equilibrium climate sensitivity, as well as a boundary condition for atmospheric general circulation models. The gridding of the sparse SST reconstruction was done in an optimal way using the Data-Interpolating Variational Analysis (DIVA) software, which takes into account the uncertainty on the reconstruction and includes the calculation of an error field. The resulting Glacial Ocean Map (GLOMAP) confirmed the previous findings by the MARGO project regarding longitudinal and meridional SST differences that were greater than today in all oceans and an equilibrium climate sensitivity at the lower end of the currently accepted range. Text Sea ice Copernicus Publications: E-Journals |
institution |
Open Polar |
collection |
Copernicus Publications: E-Journals |
op_collection_id |
ftcopernicus |
language |
English |
description |
We present a climatology of the sea-surface temperature (SST) anomaly and the sea-ice extent during the Last Glacial Maximum (LGM, 23 000–19 000 years before present) mapped on a global regular 1° × 1° grid. It is an extension of the Glacial Atlantic Ocean Mapping (GLAMAP) reconstruction of the Atlantic SST based on the results of the Multiproxy Approach for the Reconstruction of the Glacial Ocean Surface (MARGO) project and several recent estimates of the LGM sea-ice extent. Such a gridded climatology is highly useful for the visualization of the LGM climate, calculation of global and regional SST averages and estimation of the equilibrium climate sensitivity, as well as a boundary condition for atmospheric general circulation models. The gridding of the sparse SST reconstruction was done in an optimal way using the Data-Interpolating Variational Analysis (DIVA) software, which takes into account the uncertainty on the reconstruction and includes the calculation of an error field. The resulting Glacial Ocean Map (GLOMAP) confirmed the previous findings by the MARGO project regarding longitudinal and meridional SST differences that were greater than today in all oceans and an equilibrium climate sensitivity at the lower end of the currently accepted range. |
format |
Text |
author |
Paul, André Mulitza, Stefan Stein, Rüdiger Werner, Martin |
spellingShingle |
Paul, André Mulitza, Stefan Stein, Rüdiger Werner, Martin A global climatology of the ocean surface during the Last Glacial Maximum mapped on a regular grid (GLOMAP) |
author_facet |
Paul, André Mulitza, Stefan Stein, Rüdiger Werner, Martin |
author_sort |
Paul, André |
title |
A global climatology of the ocean surface during the Last Glacial Maximum mapped on a regular grid (GLOMAP) |
title_short |
A global climatology of the ocean surface during the Last Glacial Maximum mapped on a regular grid (GLOMAP) |
title_full |
A global climatology of the ocean surface during the Last Glacial Maximum mapped on a regular grid (GLOMAP) |
title_fullStr |
A global climatology of the ocean surface during the Last Glacial Maximum mapped on a regular grid (GLOMAP) |
title_full_unstemmed |
A global climatology of the ocean surface during the Last Glacial Maximum mapped on a regular grid (GLOMAP) |
title_sort |
global climatology of the ocean surface during the last glacial maximum mapped on a regular grid (glomap) |
publishDate |
2020 |
url |
https://doi.org/10.5194/cp-2019-154 https://cp.copernicus.org/preprints/cp-2019-154/ |
genre |
Sea ice |
genre_facet |
Sea ice |
op_source |
eISSN: 1814-9332 |
op_relation |
doi:10.5194/cp-2019-154 https://cp.copernicus.org/preprints/cp-2019-154/ |
op_doi |
https://doi.org/10.5194/cp-2019-154 |
_version_ |
1766193289678028800 |