Global Change Master Directory (GCMD)

Data Sets

Services / Tools

Ancillary Descriptions

Are you using a browser that doesn't support JavaScript or have you disabled JavaScript?

If you have disabled JavaScript, you must re-enable JavaScript to use this page.
Or you can view this record using the Text Only Format.

The role of iron as a micro-nutrient to the Antarctic sea-ice zone algal community - Casey Data

Entry ID: ASAC_3026_Casey

[ Get Data ]
[ Update this Record ]

Summary

Abstract: Public Description of the Project
This project will assess the importance of the trace micro-nutrient element iron to Antarctic sea-ice algal communities during the International Polar Year (2007-2009). We will investigate the biogeochemistry of iron, including a comprehensive examination of its distribution, speciation, cycling and role in fuelling ice-edge phytoplankton blooms. A significant ... part of this research will concentrate on the the influence of organic exopolysaccharides on iron solubility, complexation and bioavailability, both within the ice and in surrounding snow and surface seawater. This innovative research will improve our understanding of key processes that control the productivity of the climatically-important Antarctic sea-ice zone.

Project objectives:
This project will assess the importance of the trace element iron (Fe) as a micro-nutrient to seasonal sea-ice algal communities in the Australian sector of Antarctica during the International Polar Year (2007-09). We will investigate the biogeochemistry of Fe, including a comprehensive examination of its distribution, speciation, cycling and role in fuelling ice-edge phytoplankton blooms. A significant part of this research will concentrate on the influence of organic exopolysaccharides (EPS) on Fe solubility and complexation (and hence bioavailability), both within the ice and in surrounding surface waters. This innovative research will improve our understanding of key processes that control the productivity of the climatically-important Antarctic sea-ice zone.

This metadata record describes data collected at Casey Station as part of project 3026.

Collected data from the time series experiment in sea ice near Casey station Antarctica (66 degrees 13 minutes 07 seconds S, 110 degrees 39 minutes 02 seconds E). Measurements were made at the same location during seven consecutive study days between 10 November and 2 December 2009. Variables measured were pFe (particulate Fe), TDFe (total dissolvable Fe), dFe (dissolved Fe), plFe (particulate leachable Fe), PON (particulate organic nitrogen), POC (particulate organic carbon), Chl a (Chlorophyll a), salinity, ice temperature, vb/v (brine volume fraction), mean daily air temperature, and max daily air temperature.
Measurements were taken on each study day of the snow directly overlying the sea ice (SNOW), a shallow and a deep brine (B- and B+, respectively), three sections of the sea ice core at median depths 3, 33, and 73 centimeters (SI1, SI2, and SI3, respectively) as well as two consecutive sections in the lower most basal ice (SI4 and SI5). Finally, four samples were taken of the underlying seawater at 0, 5, 10 and 15 m (SW0, SW5, SW10 and SW15, respectively).

Related URL

Link: GET DATA

Description: Download point for the data

Geographic Coverage

(Click for Interactive Map)

Spatial coordinates

N: -66.2

S: -66.3

E: 110.7

W: 110.6

Data Set Citation

Dataset Release Date: 2012-02-28

Dataset DOI: doi:http://dx.doi.org/10.4225/15/514A83EF4D31E

Parent DIF

This data set description is a member of a collection. The collection is described in
ASAC_3026

Temporal Coverage

Start Date: 2009-11-10

Stop Date: 2009-12-02

Location Keywords

OCEAN > SOUTHERN OCEAN

CONTINENT > ANTARCTICA

GEOGRAPHIC REGION > POLAR

Science Keywords

ATMOSPHERE > ATMOSPHERIC TEMPERATURE > AIR TEMPERATURE

CRYOSPHERE > SEA ICE > ICE TEMPERATURE

ISO Topic Category

ENVIRONMENT

OCEANS

Platform

FIELD SURVEYS

FIELD INVESTIGATION

Quality See the parent record for further information.

Access Constraints These data are publicly available from the provided URL.

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_302... when using these data.

Ancillary Keywords

Iron

Data Set Progress

COMPLETE

Originating Center

Australian Antarctic Division

Data Center

Australian Antarctic Data Centre, Australia

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: 30 kb

Distribution Format: excel

Fees: Free

Personnel

PIER VAN DER MERWE

Role: INVESTIGATOR

Role: TECHNICAL CONTACT

Phone: +61 3 62267546

Fax: +61 3 6226 2973

Email: pvander at utas.edu.au

Contact Address:

Private Bag 77

City: Hobart

Province or State: Tasmania

Postal Code: 7001

Country: Australia

CAROL MANCUSO NICHOLS

Role: INVESTIGATOR

Phone: +61 3 6232 5381

Email: Carol.Nichols at csiro.au

Contact Address:

CSIRO Marine and Atmospheric Research

Castray Esplanade

City: Hobart

Province or State: Tasmania

Postal Code: 7001

Country: Australia

DAVE 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

Extended Metadata Properties

(Click to view more)

Creation and Review Dates

DIF Creation Date: 2012-02-27

Last DIF Revision Date: 2013-03-25

Reformat as FGDC document

View Text Only Format

[ Update this Record ]