Physical oceanography from 120 CTDs, 79 water bottles stations, and 30 helicopter-borne CTDs during POLARSTERN cruise ANT-XXII/2 (ISPOL)
The Ice Station POLarstern (ISPOL) cruise revisited the western Weddell Sea in late 2004 and obtained a comprehensive set of conductivity-temperature-depth (CTD) data. This study describes the thermohaline structure and diapycnal mixing environment observed in 2004 and compares them with conditions...
Main Authors: | , , , |
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Format: | Dataset |
Language: | English |
Published: |
PANGAEA
2008
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Subjects: | |
Online Access: | https://doi.pangaea.de/10.1594/PANGAEA.729699 https://doi.org/10.1594/PANGAEA.729699 |
id |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.729699 |
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record_format |
openpolar |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
ANT-XXII/2 ANT-XXII/2_003-1 ANT-XXII/2_004-1 ANT-XXII/2_005-1 ANT-XXII/2_006-1 ANT-XXII/2_007-1 ANT-XXII/2_007-22 ANT-XXII/2_008-1 ANT-XXII/2_008-22 ANT-XXII/2_009-1 ANT-XXII/2_009-22 ANT-XXII/2_010-1 ANT-XXII/2_011-1 ANT-XXII/2_012-1 ANT-XXII/2_013-1 ANT-XXII/2_014-1 ANT-XXII/2_015-1 ANT-XXII/2_016-1 ANT-XXII/2_017-1 ANT-XXII/2_018-1 ANT-XXII/2_019-1 ANT-XXII/2_020-1 ANT-XXII/2_021-1 ANT-XXII/2_022-1 ANT-XXII/2_066-22 ANT-XXII/2_139-22 ANT-XXII/2_140-22 ANT-XXII/2_142-22 ANT-XXII/2_143-22 ANT-XXII/2_144-22 ANT-XXII/2_146-22 AWI_PhyOce CTD/Rosette CTD from ice float CTDIF CTD-RO Physical Oceanography @ AWI Polarstern PS67/005-1 PS67/006-10 PS67/006-100 PS67/006-101 PS67/006-102 PS67/006-103 PS67/006-104 PS67/006-105 PS67/006-108 PS67/006-109 PS67/006-11 PS67/006-110 |
spellingShingle |
ANT-XXII/2 ANT-XXII/2_003-1 ANT-XXII/2_004-1 ANT-XXII/2_005-1 ANT-XXII/2_006-1 ANT-XXII/2_007-1 ANT-XXII/2_007-22 ANT-XXII/2_008-1 ANT-XXII/2_008-22 ANT-XXII/2_009-1 ANT-XXII/2_009-22 ANT-XXII/2_010-1 ANT-XXII/2_011-1 ANT-XXII/2_012-1 ANT-XXII/2_013-1 ANT-XXII/2_014-1 ANT-XXII/2_015-1 ANT-XXII/2_016-1 ANT-XXII/2_017-1 ANT-XXII/2_018-1 ANT-XXII/2_019-1 ANT-XXII/2_020-1 ANT-XXII/2_021-1 ANT-XXII/2_022-1 ANT-XXII/2_066-22 ANT-XXII/2_139-22 ANT-XXII/2_140-22 ANT-XXII/2_142-22 ANT-XXII/2_143-22 ANT-XXII/2_144-22 ANT-XXII/2_146-22 AWI_PhyOce CTD/Rosette CTD from ice float CTDIF CTD-RO Physical Oceanography @ AWI Polarstern PS67/005-1 PS67/006-10 PS67/006-100 PS67/006-101 PS67/006-102 PS67/006-103 PS67/006-104 PS67/006-105 PS67/006-108 PS67/006-109 PS67/006-11 PS67/006-110 Absy, Joao Marcelo Schröder, Michael Muench, Robin D Hellmer, Hartmut H Physical oceanography from 120 CTDs, 79 water bottles stations, and 30 helicopter-borne CTDs during POLARSTERN cruise ANT-XXII/2 (ISPOL) |
topic_facet |
ANT-XXII/2 ANT-XXII/2_003-1 ANT-XXII/2_004-1 ANT-XXII/2_005-1 ANT-XXII/2_006-1 ANT-XXII/2_007-1 ANT-XXII/2_007-22 ANT-XXII/2_008-1 ANT-XXII/2_008-22 ANT-XXII/2_009-1 ANT-XXII/2_009-22 ANT-XXII/2_010-1 ANT-XXII/2_011-1 ANT-XXII/2_012-1 ANT-XXII/2_013-1 ANT-XXII/2_014-1 ANT-XXII/2_015-1 ANT-XXII/2_016-1 ANT-XXII/2_017-1 ANT-XXII/2_018-1 ANT-XXII/2_019-1 ANT-XXII/2_020-1 ANT-XXII/2_021-1 ANT-XXII/2_022-1 ANT-XXII/2_066-22 ANT-XXII/2_139-22 ANT-XXII/2_140-22 ANT-XXII/2_142-22 ANT-XXII/2_143-22 ANT-XXII/2_144-22 ANT-XXII/2_146-22 AWI_PhyOce CTD/Rosette CTD from ice float CTDIF CTD-RO Physical Oceanography @ AWI Polarstern PS67/005-1 PS67/006-10 PS67/006-100 PS67/006-101 PS67/006-102 PS67/006-103 PS67/006-104 PS67/006-105 PS67/006-108 PS67/006-109 PS67/006-11 PS67/006-110 |
description |
The Ice Station POLarstern (ISPOL) cruise revisited the western Weddell Sea in late 2004 and obtained a comprehensive set of conductivity-temperature-depth (CTD) data. This study describes the thermohaline structure and diapycnal mixing environment observed in 2004 and compares them with conditions observed more than a decade earlier. Hydrographic conditions on the central western Weddell Sea continental slope, off Larsen C Ice Shelf, in late winter/early spring of 2004/2005 can be described as a well-stratified environment with upper layers evidencing relict structures from intense winter near-surface vertical fluxes, an intermediate depth temperature maximum, and a cold near-bottom layer marked by patchy property distributions. A well-developed surface mixed layer, isolated from the underlying Warm Deep Water (WDW) by a pronounced pycnocline and characterized by lack of warming and by minimal sea-ice basal melting, supports the assumption that upper ocean winter conditions persisted during most of the ISPOL experiment. Much of the western Weddell Sea water column has remained essentially unchanged since 1992; however, significant differences were observed in two of the regional water masses. The first, Modified Weddell Deep Water (MWDW), comprises the permanent pycnocline and was less saline than a decade earlier, whereas Weddell Sea Bottom Water (WSBW) was horizontally patchier and colder. Near-bottom temperatures observed in 2004 were the coldest on record for the western Weddell Sea over the continental slope. Minimum temperatures were ~0.4 and ~0.3 °C colder than during 1992-1993, respectively. The 2004 near-bottom temperature/salinity characteristics revealed the presence of two different WSBW types, whereby a warm, fresh layer overlays a colder, saltier layer (both formed in the western Weddell Sea). The deeper layer may have formed locally as high salinity shelf water (HSSW) that flowed intermittently down the continental slope, which is consistent with the observed horizontal patchiness. The latter can ... |
format |
Dataset |
author |
Absy, Joao Marcelo Schröder, Michael Muench, Robin D Hellmer, Hartmut H |
author_facet |
Absy, Joao Marcelo Schröder, Michael Muench, Robin D Hellmer, Hartmut H |
author_sort |
Absy, Joao Marcelo |
title |
Physical oceanography from 120 CTDs, 79 water bottles stations, and 30 helicopter-borne CTDs during POLARSTERN cruise ANT-XXII/2 (ISPOL) |
title_short |
Physical oceanography from 120 CTDs, 79 water bottles stations, and 30 helicopter-borne CTDs during POLARSTERN cruise ANT-XXII/2 (ISPOL) |
title_full |
Physical oceanography from 120 CTDs, 79 water bottles stations, and 30 helicopter-borne CTDs during POLARSTERN cruise ANT-XXII/2 (ISPOL) |
title_fullStr |
Physical oceanography from 120 CTDs, 79 water bottles stations, and 30 helicopter-borne CTDs during POLARSTERN cruise ANT-XXII/2 (ISPOL) |
title_full_unstemmed |
Physical oceanography from 120 CTDs, 79 water bottles stations, and 30 helicopter-borne CTDs during POLARSTERN cruise ANT-XXII/2 (ISPOL) |
title_sort |
physical oceanography from 120 ctds, 79 water bottles stations, and 30 helicopter-borne ctds during polarstern cruise ant-xxii/2 (ispol) |
publisher |
PANGAEA |
publishDate |
2008 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.729699 https://doi.org/10.1594/PANGAEA.729699 |
op_coverage |
MEDIAN LATITUDE: -66.445424 * MEDIAN LONGITUDE: -51.612424 * SOUTH-BOUND LATITUDE: -68.268700 * WEST-BOUND LONGITUDE: -57.471500 * NORTH-BOUND LATITUDE: -59.871100 * EAST-BOUND LONGITUDE: -36.302300 * DATE/TIME START: 2004-11-20T00:10:00 * DATE/TIME END: 2005-01-07T11:40:00 |
long_lat |
ENVELOPE(-57.471500,-36.302300,-59.871100,-68.268700) |
geographic |
Weddell Weddell Sea |
geographic_facet |
Weddell Weddell Sea |
genre |
Ice Shelf Sea ice Weddell Sea |
genre_facet |
Ice Shelf Sea ice Weddell Sea |
op_source |
Supplement to: Absy, Joao Marcelo; Schröder, Michael; Muench, Robin D; Hellmer, Hartmut H (2008): Early summer thermohaline characteristics and mixing in the western Weddell Sea. Deep Sea Research Part II: Topical Studies in Oceanography, 55(8-9), 1117-1131, https://doi.org/10.1016/j.dsr2.2007.12.023 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.729699 https://doi.org/10.1594/PANGAEA.729699 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.729699 https://doi.org/10.1016/j.dsr2.2007.12.023 |
_version_ |
1766032404443561984 |
spelling |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.729699 2023-05-15T16:41:56+02:00 Physical oceanography from 120 CTDs, 79 water bottles stations, and 30 helicopter-borne CTDs during POLARSTERN cruise ANT-XXII/2 (ISPOL) Absy, Joao Marcelo Schröder, Michael Muench, Robin D Hellmer, Hartmut H MEDIAN LATITUDE: -66.445424 * MEDIAN LONGITUDE: -51.612424 * SOUTH-BOUND LATITUDE: -68.268700 * WEST-BOUND LONGITUDE: -57.471500 * NORTH-BOUND LATITUDE: -59.871100 * EAST-BOUND LONGITUDE: -36.302300 * DATE/TIME START: 2004-11-20T00:10:00 * DATE/TIME END: 2005-01-07T11:40:00 2008-11-30 application/zip, 3 datasets https://doi.pangaea.de/10.1594/PANGAEA.729699 https://doi.org/10.1594/PANGAEA.729699 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.729699 https://doi.org/10.1594/PANGAEA.729699 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Absy, Joao Marcelo; Schröder, Michael; Muench, Robin D; Hellmer, Hartmut H (2008): Early summer thermohaline characteristics and mixing in the western Weddell Sea. Deep Sea Research Part II: Topical Studies in Oceanography, 55(8-9), 1117-1131, https://doi.org/10.1016/j.dsr2.2007.12.023 ANT-XXII/2 ANT-XXII/2_003-1 ANT-XXII/2_004-1 ANT-XXII/2_005-1 ANT-XXII/2_006-1 ANT-XXII/2_007-1 ANT-XXII/2_007-22 ANT-XXII/2_008-1 ANT-XXII/2_008-22 ANT-XXII/2_009-1 ANT-XXII/2_009-22 ANT-XXII/2_010-1 ANT-XXII/2_011-1 ANT-XXII/2_012-1 ANT-XXII/2_013-1 ANT-XXII/2_014-1 ANT-XXII/2_015-1 ANT-XXII/2_016-1 ANT-XXII/2_017-1 ANT-XXII/2_018-1 ANT-XXII/2_019-1 ANT-XXII/2_020-1 ANT-XXII/2_021-1 ANT-XXII/2_022-1 ANT-XXII/2_066-22 ANT-XXII/2_139-22 ANT-XXII/2_140-22 ANT-XXII/2_142-22 ANT-XXII/2_143-22 ANT-XXII/2_144-22 ANT-XXII/2_146-22 AWI_PhyOce CTD/Rosette CTD from ice float CTDIF CTD-RO Physical Oceanography @ AWI Polarstern PS67/005-1 PS67/006-10 PS67/006-100 PS67/006-101 PS67/006-102 PS67/006-103 PS67/006-104 PS67/006-105 PS67/006-108 PS67/006-109 PS67/006-11 PS67/006-110 Dataset 2008 ftpangaea https://doi.org/10.1594/PANGAEA.729699 https://doi.org/10.1016/j.dsr2.2007.12.023 2023-01-20T07:31:35Z The Ice Station POLarstern (ISPOL) cruise revisited the western Weddell Sea in late 2004 and obtained a comprehensive set of conductivity-temperature-depth (CTD) data. This study describes the thermohaline structure and diapycnal mixing environment observed in 2004 and compares them with conditions observed more than a decade earlier. Hydrographic conditions on the central western Weddell Sea continental slope, off Larsen C Ice Shelf, in late winter/early spring of 2004/2005 can be described as a well-stratified environment with upper layers evidencing relict structures from intense winter near-surface vertical fluxes, an intermediate depth temperature maximum, and a cold near-bottom layer marked by patchy property distributions. A well-developed surface mixed layer, isolated from the underlying Warm Deep Water (WDW) by a pronounced pycnocline and characterized by lack of warming and by minimal sea-ice basal melting, supports the assumption that upper ocean winter conditions persisted during most of the ISPOL experiment. Much of the western Weddell Sea water column has remained essentially unchanged since 1992; however, significant differences were observed in two of the regional water masses. The first, Modified Weddell Deep Water (MWDW), comprises the permanent pycnocline and was less saline than a decade earlier, whereas Weddell Sea Bottom Water (WSBW) was horizontally patchier and colder. Near-bottom temperatures observed in 2004 were the coldest on record for the western Weddell Sea over the continental slope. Minimum temperatures were ~0.4 and ~0.3 °C colder than during 1992-1993, respectively. The 2004 near-bottom temperature/salinity characteristics revealed the presence of two different WSBW types, whereby a warm, fresh layer overlays a colder, saltier layer (both formed in the western Weddell Sea). The deeper layer may have formed locally as high salinity shelf water (HSSW) that flowed intermittently down the continental slope, which is consistent with the observed horizontal patchiness. The latter can ... Dataset Ice Shelf Sea ice Weddell Sea PANGAEA - Data Publisher for Earth & Environmental Science Weddell Weddell Sea ENVELOPE(-57.471500,-36.302300,-59.871100,-68.268700) |