Physical and biogeochemical dynamics of the subantarctic zone
Entry ID: ASAC_2720

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Summary
Abstract: This metadata record is a 'Parent' metadata record for ASAC project 2720. See the link for the related 'Child' metadata records.

The overall objective is to characterise Southern Ocean marine ecosystems, their influence on carbon dioxide exchange with the atmosphere and the deep ocean, and their sensitivity to past and future global change including climate warming, ocean stratification, and ocean acidification from anthropogenic CO2 emissions. In particular we plan to take advantage of naturally-occurring, persistent, zonal variations in Southern Ocean primary production and biomass in the Australian Sector to investigate the effects of iron addition from natural sources, and CO2 addition from anthropogenic sources, on Southern Ocean plankton communities of differing initial structure and composition.

SAZ-SENSE is a study of the sensitivity of Sub-Antarctic Zone waters to global change. A 32-day oceanographic voyage onboard Australia's ice-breaker Aurora Australis was undertaken in mid-summer (Jan 17 - Feb. 20) 2007 to examine microbial ecosystem structure and biogeochemical processes in SAZ waters west and east of Tasmania, and also in the Polar Frontal Zone south of the SAZ.

The voyage brought together research teams from Australasia, Europe, and North America, and was led by the ACE CRC, CSIRO Marine and Atmospheric Research, and the Australian Antarctic Division.

The overall goal is to understand the controls on Sub-Antarctic Zone productivity and carbon cycling, and to assess their sensitivity to climate change. The strategy is to compare low productivity waters west of Tasmania (areas with little phytoplankton) with higher productivity waters to the east, with a focus on the role of iron as a limiting micro-nutrient. The study also seeks to examine the effect of rising CO2 levels on phytoplankton - both via regional intercomparisons and incubation experiments.

Available for download from this metadata record are various datasets collected from the voyage:

- An image showing a map of the cruise track.
- An excel document detailing hourly position checks of the ship.
- An excel document detailing the event log for the voyage.
- A word document detailing prospective papers produced from the voyage.

Finally a link is available for users to access the special volume of publications produced as a result of this voyage.

Related URL
Link: GET DATA
Description: SAZ-SENSE Website


Link: GET DATA
Description: Download point for the cruise track, hourly positions, event log and paper list.


Link: VIEW PROJECT HOME PAGE
Description: Public information for ASAC project 2720


Link: VIEW RELATED INFORMATION
Description: Link to the special volume of publications produced as a result of the voyage


Link: VIEW RELATED INFORMATION
Description: Citation reference for this metadata record and dataset


Geographic Coverage
 N: -43.05 S: -54.27  E: 153.81  W: 140.3

Temporal Coverage
Start Date: 2007-01-17
Stop Date: 2007-02-20


Location Keywords
OCEAN > SOUTHERN OCEAN
CONTINENT > ANTARCTICA
GEOGRAPHIC REGION > POLAR


Science Keywords
OCEANS >OCEAN CHEMISTRY >CARBON    [Definition]
OCEANS >OCEAN CHEMISTRY >CARBON DIOXIDE    [Definition]
BIOSPHERE >AQUATIC ECOSYSTEMS >PLANKTON >PHYTOPLANKTON    [Definition]
BIOSPHERE >AQUATIC ECOSYSTEMS >PLANKTON    [Definition]
ATMOSPHERE >ATMOSPHERIC CHEMISTRY >CARBON AND HYDROCARBON COMPOUNDS >CARBON DIOXIDE    [Definition]
BIOSPHERE >ECOLOGICAL DYNAMICS >ECOSYSTEM FUNCTIONS >BIOGEOCHEMICAL CYCLES    [Definition]
BIOSPHERE >ECOLOGICAL DYNAMICS >ECOSYSTEM FUNCTIONS >NUTRIENT CYCLING    [Definition]


ISO Topic Category
BIOTA
CLIMATOLOGY/METEOROLOGY/ATMOSPHERE
ENVIRONMENT
OCEANS


Platform
SHIPS    [Information]


Instrument
CTD >Conductivity, Temperature, Depth    [Information]
NISKIN BOTTLES    [Information]
FLOW CYTOMETRY    [Information]


Quality
See the SAZ-SENSE website listed at the URL given below, as well as the child records attached to this metadata record for further information.


Access Constraints
The data are publicly available for download from the provided URLS.


Use Constraints
This data set conforms to the PICCCBY Attribution License
(http://creativecommons.org/licenses/by/3.0/).

Please follow instructions listed in the citation reference provided at http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=ASAC_2720 when using these data.


Keywords
carbon dioxide
ecosystems
global warming
climate change
SAZ-SENSE


Data Set Progress
COMPLETE


Originating Center
ACE CRC, CSIRO, AAD


Data Center
Australian Antarctic Data Centre, Australia    [Information]
Data Center URL: http://data.aad.gov.au

Data Center Personnel
Name: DATA OFFICER AADC
Phone: +61 3 6232 3244
Fax: +61 3 6232 3351
Email: metadata at aad.gov.au
Contact Address:
Australian Antarctic Division
203 Channel Highway
City: Kingston
Province or State: Tasmania
Postal Code: 7050
Country: Australia



Distribution
Distribution_Media: HTTP
Distribution_Size: 5.6 MB
Distribution_Format: jpg, excel, word
Fees: free


Personnel
WILLIAM HOWARD
Role: INVESTIGATOR
Role: TECHNICAL CONTACT
Email: whoward at unimelb.edu.au
Contact Address:
School of Earth Sciences
University of Melbourne
City: Melbourne
Province or State: Victoria
Postal Code: 3010
Country: Australia


BRIAN GRIFFITHS (RETIRED)
Role: INVESTIGATOR
Role: TECHNICAL CONTACT
Email: Brian.Griffiths at csiro.au


DAVE J. CONNELL
Role: DIF AUTHOR
Phone: +61 3 6232 3244
Fax: +61 3 6232 3351
Email: dave.connell at aad.gov.au
Contact Address:
Australian Antarctic Division
203 Channel Highway
City: Kingston
Province or State: Tasmania
Postal Code: 7050
Country: Australia



Creation and Review Dates
DIF Creation Date: 2006-07-27
Last DIF Revision Date: 2014-08-29

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