Long-term variation of surface phytoplankton chlorophyll a in the Southern Ocean during 1965-2002
Progress Code: completed Statement: In the dataset over the 38-year period of 1965-2002, we used the value of water between 25 degrees N to 55 degrees S along the cruise track between Tokyo and Antarctica, during the period between 15 November and 28 December of each year. Although the sea surface w...
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ftands:oai:ands.org.au::2822847 2023-10-09T21:47:10+02:00 Long-term variation of surface phytoplankton chlorophyll a in the Southern Ocean during 1965-2002 Spatial: westlimit=100.147; southlimit=-54.985; eastlimit=137.95; northlimit=24.567 Temporal: From 1965-11-23 to 2002-12-08 https://researchdata.edu.au/long-term-variation-1965-2002/2822847 unknown Australian Ocean Data Network https://researchdata.edu.au/long-term-variation-1965-2002/2822847 chlorophyll_65-02 Dataset DOI AU/AADC > Australian Antarctic Data Centre, Australia biota climatologyMeteorologyAtmosphere oceans EARTH SCIENCE > CLIMATE INDICATORS > ATMOSPHERIC/OCEAN INDICATORS > TELECONNECTIONS > ANTARCTIC OSCILLATION EL NINO SOUTHERN OSCILLATION (ENSO) BIOSPHERE > ECOSYSTEMS > AQUATIC ECOSYSTEMS > PLANKTON > PHYTOPLANKTON OCEANS > OCEAN CHEMISTRY > PIGMENTS > CHLOROPHYLL ECOLOGICAL DYNAMICS > ECOSYSTEM FUNCTIONS > BIOMASS DYNAMICS CHLOROPHYLL A JARE SOUTHERN OCEAN SHIPS AMD/AU CEOS AMD OCEAN > INDIAN OCEAN PACIFIC OCEAN GEOGRAPHIC REGION > POLAR dataset ftands 2023-09-18T22:50:25Z Progress Code: completed Statement: In the dataset over the 38-year period of 1965-2002, we used the value of water between 25 degrees N to 55 degrees S along the cruise track between Tokyo and Antarctica, during the period between 15 November and 28 December of each year. Although the sea surface water was sampled with a plastic bucket or pump (8 m), no significant difference in the chl a between sampling procedures was found. The chl a was determined colourimetrically until 1980 (except in 1967 and 1972) and fluorometrically since 1981. The data collected colourimetrically was corrected to a concentration corresponding to the fluorometric measurements. Difference in the chl a between the solvents was not significant. The variation in the phytoplankton biomass over a decadal time scale, and its relationship with the Antarctic Circumpolar Wave (ACW) and climate change, has been poorly interpreted because of the limited satellite chlorophylla (chl a) data compared with the physical parameters from satellite. We analysed a long-term chl a dataset along the Japanese Antarctic Research Expedition (JARE) cruise tracks since 1965 to investigate inter-annual variation of phytoplankton biomass. In the Southern Ocean, increasing trends of chl a and the spreading of higher chl a area to the north with 3-7 year cycles were found. Although relationships between the decadal change in chl a and climate change such as variation of sea ice extent and the El Nino are still obscure, large variation of primary production in proportion to the chl a is implied. The chl a concentration of sea surface water has been measured routinely on board the icebreakers Fuji and Shirase during almost every cruise of the JARE. The download file contains chlorophyll a data collected from ship tracks on JARE voyages between 1965 and 2002. The field in this dataset are: Date (local time) Year Latitude Longitude Corrected Chlorophyll a See the attached paper for more details. The publications on the data collected during the 1965-1976 and ... Dataset Antarc* Antarctic Antarctica Sea ice Southern Ocean Research Data Australia (Australian National Data Service - ANDS) Antarctic Southern Ocean The Antarctic Pacific Indian |
institution |
Open Polar |
collection |
Research Data Australia (Australian National Data Service - ANDS) |
op_collection_id |
ftands |
language |
unknown |
topic |
biota climatologyMeteorologyAtmosphere oceans EARTH SCIENCE > CLIMATE INDICATORS > ATMOSPHERIC/OCEAN INDICATORS > TELECONNECTIONS > ANTARCTIC OSCILLATION EL NINO SOUTHERN OSCILLATION (ENSO) BIOSPHERE > ECOSYSTEMS > AQUATIC ECOSYSTEMS > PLANKTON > PHYTOPLANKTON OCEANS > OCEAN CHEMISTRY > PIGMENTS > CHLOROPHYLL ECOLOGICAL DYNAMICS > ECOSYSTEM FUNCTIONS > BIOMASS DYNAMICS CHLOROPHYLL A JARE SOUTHERN OCEAN SHIPS AMD/AU CEOS AMD OCEAN > INDIAN OCEAN PACIFIC OCEAN GEOGRAPHIC REGION > POLAR |
spellingShingle |
biota climatologyMeteorologyAtmosphere oceans EARTH SCIENCE > CLIMATE INDICATORS > ATMOSPHERIC/OCEAN INDICATORS > TELECONNECTIONS > ANTARCTIC OSCILLATION EL NINO SOUTHERN OSCILLATION (ENSO) BIOSPHERE > ECOSYSTEMS > AQUATIC ECOSYSTEMS > PLANKTON > PHYTOPLANKTON OCEANS > OCEAN CHEMISTRY > PIGMENTS > CHLOROPHYLL ECOLOGICAL DYNAMICS > ECOSYSTEM FUNCTIONS > BIOMASS DYNAMICS CHLOROPHYLL A JARE SOUTHERN OCEAN SHIPS AMD/AU CEOS AMD OCEAN > INDIAN OCEAN PACIFIC OCEAN GEOGRAPHIC REGION > POLAR Long-term variation of surface phytoplankton chlorophyll a in the Southern Ocean during 1965-2002 |
topic_facet |
biota climatologyMeteorologyAtmosphere oceans EARTH SCIENCE > CLIMATE INDICATORS > ATMOSPHERIC/OCEAN INDICATORS > TELECONNECTIONS > ANTARCTIC OSCILLATION EL NINO SOUTHERN OSCILLATION (ENSO) BIOSPHERE > ECOSYSTEMS > AQUATIC ECOSYSTEMS > PLANKTON > PHYTOPLANKTON OCEANS > OCEAN CHEMISTRY > PIGMENTS > CHLOROPHYLL ECOLOGICAL DYNAMICS > ECOSYSTEM FUNCTIONS > BIOMASS DYNAMICS CHLOROPHYLL A JARE SOUTHERN OCEAN SHIPS AMD/AU CEOS AMD OCEAN > INDIAN OCEAN PACIFIC OCEAN GEOGRAPHIC REGION > POLAR |
description |
Progress Code: completed Statement: In the dataset over the 38-year period of 1965-2002, we used the value of water between 25 degrees N to 55 degrees S along the cruise track between Tokyo and Antarctica, during the period between 15 November and 28 December of each year. Although the sea surface water was sampled with a plastic bucket or pump (8 m), no significant difference in the chl a between sampling procedures was found. The chl a was determined colourimetrically until 1980 (except in 1967 and 1972) and fluorometrically since 1981. The data collected colourimetrically was corrected to a concentration corresponding to the fluorometric measurements. Difference in the chl a between the solvents was not significant. The variation in the phytoplankton biomass over a decadal time scale, and its relationship with the Antarctic Circumpolar Wave (ACW) and climate change, has been poorly interpreted because of the limited satellite chlorophylla (chl a) data compared with the physical parameters from satellite. We analysed a long-term chl a dataset along the Japanese Antarctic Research Expedition (JARE) cruise tracks since 1965 to investigate inter-annual variation of phytoplankton biomass. In the Southern Ocean, increasing trends of chl a and the spreading of higher chl a area to the north with 3-7 year cycles were found. Although relationships between the decadal change in chl a and climate change such as variation of sea ice extent and the El Nino are still obscure, large variation of primary production in proportion to the chl a is implied. The chl a concentration of sea surface water has been measured routinely on board the icebreakers Fuji and Shirase during almost every cruise of the JARE. The download file contains chlorophyll a data collected from ship tracks on JARE voyages between 1965 and 2002. The field in this dataset are: Date (local time) Year Latitude Longitude Corrected Chlorophyll a See the attached paper for more details. The publications on the data collected during the 1965-1976 and ... |
format |
Dataset |
title |
Long-term variation of surface phytoplankton chlorophyll a in the Southern Ocean during 1965-2002 |
title_short |
Long-term variation of surface phytoplankton chlorophyll a in the Southern Ocean during 1965-2002 |
title_full |
Long-term variation of surface phytoplankton chlorophyll a in the Southern Ocean during 1965-2002 |
title_fullStr |
Long-term variation of surface phytoplankton chlorophyll a in the Southern Ocean during 1965-2002 |
title_full_unstemmed |
Long-term variation of surface phytoplankton chlorophyll a in the Southern Ocean during 1965-2002 |
title_sort |
long-term variation of surface phytoplankton chlorophyll a in the southern ocean during 1965-2002 |
publisher |
Australian Ocean Data Network |
url |
https://researchdata.edu.au/long-term-variation-1965-2002/2822847 |
op_coverage |
Spatial: westlimit=100.147; southlimit=-54.985; eastlimit=137.95; northlimit=24.567 Temporal: From 1965-11-23 to 2002-12-08 |
geographic |
Antarctic Southern Ocean The Antarctic Pacific Indian |
geographic_facet |
Antarctic Southern Ocean The Antarctic Pacific Indian |
genre |
Antarc* Antarctic Antarctica Sea ice Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctica Sea ice Southern Ocean |
op_source |
AU/AADC > Australian Antarctic Data Centre, Australia |
op_relation |
https://researchdata.edu.au/long-term-variation-1965-2002/2822847 chlorophyll_65-02 Dataset DOI |
_version_ |
1779309990719258624 |