CHLOROFLUOROCARBON DISTRIBUTION IN THE ROSS SEA WATER MASSES
Chlorofluorocarbon (CFC11, CFC12 and CFC113) data, collected during the 2000–2001 austral summer, within the framework of the activities of the Climatic Long-Term Interactions for the Mass-Balance in Antarctica (CLIMA) Project of the Italian National Program for Antarctic Research (PNRA) in the Ross...
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ftuninapoliparth:oai:ricerca.uniparthenope.it:11367/16050 2024-04-21T07:51:25+00:00 CHLOROFLUOROCARBON DISTRIBUTION IN THE ROSS SEA WATER MASSES RIVARO, Paola BERGAMASCO, Andrea BUDILLON, Giorgio Frache, R. Hohmann, R. MASSOLO G. SPEZIE, S. MASSOLO G. SPEZIE Rivaro, Paola Bergamasco, Andrea Budillon, Giorgio Frache, R. Hohmann, R. Massolo, G. SPEZIE, S. MASSOLO G., Spezie 2004 http://hdl.handle.net/11367/16050 eng eng info:eu-repo/semantics/altIdentifier/wos/WOS:000208520200005 volume:20 firstpage:1 lastpage:13 numberofpages:13 journal:CHEMISTRY IN ECOLOGY http://hdl.handle.net/11367/16050 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-5044233852 info:eu-repo/semantics/article 2004 ftuninapoliparth 2024-03-28T01:11:47Z Chlorofluorocarbon (CFC11, CFC12 and CFC113) data, collected during the 2000–2001 austral summer, within the framework of the activities of the Climatic Long-Term Interactions for the Mass-Balance in Antarctica (CLIMA) Project of the Italian National Program for Antarctic Research (PNRA) in the Ross Sea, are discussed in the context of hydrographic observations. These data provide an overview of CFC distribution in some of the characteristic water masses found in the Ross Sea. The highest values of CFCs are found in the Antarctic Surface Water (AASW), because of the exchange with the atmosphere, while the lowest concentrations and the highest temperatures define the presence of Circumpolar Deep Water (CDW) in the cast of the analyzed samples. High Salinity Shelf Water (HSSW) can be identified by the highest salinity and by the relatively high content of CFCs. Moreover, the CFCs are useful tracers to study the mixing and overflow processes near the shelf break. In particular, chlorofluorocarbons trace the intrusion onto the shelf of Modified Circumpolar Deep Water (MCDW) off Cape Adare. The relative age of this water mass derived from CFCs ratios indicates that ventilation occurred between 1973 and 1979. The thermohaline structures and CFC distribution reveal at the shelf break the presence of HSSW already mixed with MCDW. Consequently, the density value of the bottom layer is not high enough to produce a strong overflow along the shelf break, causing a less intense ventilation of the deep oceans. Article in Journal/Newspaper Antarc* Antarctic Antarctica Ross Sea Università degli Studi di Napoli "Parthenope": CINECA IRIS |
institution |
Open Polar |
collection |
Università degli Studi di Napoli "Parthenope": CINECA IRIS |
op_collection_id |
ftuninapoliparth |
language |
English |
description |
Chlorofluorocarbon (CFC11, CFC12 and CFC113) data, collected during the 2000–2001 austral summer, within the framework of the activities of the Climatic Long-Term Interactions for the Mass-Balance in Antarctica (CLIMA) Project of the Italian National Program for Antarctic Research (PNRA) in the Ross Sea, are discussed in the context of hydrographic observations. These data provide an overview of CFC distribution in some of the characteristic water masses found in the Ross Sea. The highest values of CFCs are found in the Antarctic Surface Water (AASW), because of the exchange with the atmosphere, while the lowest concentrations and the highest temperatures define the presence of Circumpolar Deep Water (CDW) in the cast of the analyzed samples. High Salinity Shelf Water (HSSW) can be identified by the highest salinity and by the relatively high content of CFCs. Moreover, the CFCs are useful tracers to study the mixing and overflow processes near the shelf break. In particular, chlorofluorocarbons trace the intrusion onto the shelf of Modified Circumpolar Deep Water (MCDW) off Cape Adare. The relative age of this water mass derived from CFCs ratios indicates that ventilation occurred between 1973 and 1979. The thermohaline structures and CFC distribution reveal at the shelf break the presence of HSSW already mixed with MCDW. Consequently, the density value of the bottom layer is not high enough to produce a strong overflow along the shelf break, causing a less intense ventilation of the deep oceans. |
author2 |
Rivaro, Paola Bergamasco, Andrea Budillon, Giorgio Frache, R. Hohmann, R. Massolo, G. SPEZIE, S. MASSOLO G., Spezie |
format |
Article in Journal/Newspaper |
author |
RIVARO, Paola BERGAMASCO, Andrea BUDILLON, Giorgio Frache, R. Hohmann, R. MASSOLO G. SPEZIE, S. MASSOLO G. SPEZIE |
spellingShingle |
RIVARO, Paola BERGAMASCO, Andrea BUDILLON, Giorgio Frache, R. Hohmann, R. MASSOLO G. SPEZIE, S. MASSOLO G. SPEZIE CHLOROFLUOROCARBON DISTRIBUTION IN THE ROSS SEA WATER MASSES |
author_facet |
RIVARO, Paola BERGAMASCO, Andrea BUDILLON, Giorgio Frache, R. Hohmann, R. MASSOLO G. SPEZIE, S. MASSOLO G. SPEZIE |
author_sort |
RIVARO, Paola |
title |
CHLOROFLUOROCARBON DISTRIBUTION IN THE ROSS SEA WATER MASSES |
title_short |
CHLOROFLUOROCARBON DISTRIBUTION IN THE ROSS SEA WATER MASSES |
title_full |
CHLOROFLUOROCARBON DISTRIBUTION IN THE ROSS SEA WATER MASSES |
title_fullStr |
CHLOROFLUOROCARBON DISTRIBUTION IN THE ROSS SEA WATER MASSES |
title_full_unstemmed |
CHLOROFLUOROCARBON DISTRIBUTION IN THE ROSS SEA WATER MASSES |
title_sort |
chlorofluorocarbon distribution in the ross sea water masses |
publishDate |
2004 |
url |
http://hdl.handle.net/11367/16050 |
genre |
Antarc* Antarctic Antarctica Ross Sea |
genre_facet |
Antarc* Antarctic Antarctica Ross Sea |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000208520200005 volume:20 firstpage:1 lastpage:13 numberofpages:13 journal:CHEMISTRY IN ECOLOGY http://hdl.handle.net/11367/16050 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-5044233852 |
_version_ |
1796934785405288448 |