Sea Ice Bio-Optical Sampling, cruise 2007/08 V1 (SIPEX)
Entry ID: SIPEX_BioOptics

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Summary
Abstract: A total of 31 paired under-ice irradiance measurements and ice core samples were collected from 12 ice stations in the 115-130 degrees E sector off East Antarctica in September and early October 2007 during the Sea Ice Physics and Ecosystem eXperiment (SIPEX). Sampled ice floes were several 100 meters to several kilometres in diameter and were all composite first-year sea ice floes showing different degrees of deformation. The SIPEX bio-optical sampling sites were chosen such that their immediate surroundings (20 m) showed no snow cover disturbances, were level, and free of surface deformations.

On each sampling site we deployed a TriOS Ramses ACC VIS radiometer (cosine receptor, 180 degree field of view) 0.15 m beneath the subsurface of the ice floe through an access hole (0.11 m diameter) using a retractable L-shaped stainless steel arm. The hole-effect on the light measurements was assumed to be negligible due the position of the radiometer 1.2 m north (i.e. directed towards the sun) of the access hole. Under-ice high-resolution (300-900 nm, 3.3 nm band-width) irradiance spectra were recorded with a laptop computer using TriOS MSDA_XE software version 7.5.1. At each site, snow thickness was measured with a ruler (10 replicate measurements) and one ice core was collected, using a manual Kovacs Mark II ice core system (0.09 m core diameter), directly above the radiometer location. Ice floe freeboard was determined with a ruler from the sampling hole. The length of the ice core was recorded and the ice core was placed in a clean polyethylene container and transported back to the ship's laboratories. On the ship sampled ice cores were melted at 4 degrees C in the dark within 24 - 36 hours of collection. After the ice cores had melted, the samples were gently mixed and subsamples were taken for a) determination of ice algal pigment concentration and composition, and b) determination of particulate absorption.

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Link: GET DATA
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Description: Public information for ASAC project 2767


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


Parent DIF
This data set description is a member of a collection. The collection is described in
ASAC_2767


Geographic Coverage
 N: -64.23 S: -64.23  E: 128.0  W: 128.0
 N: -64.483 S: -64.483  E: 128.1  W: 128.1
 N: -64.383 S: -64.383  E: 127.183  W: 127.183
 N: -65.1 S: -65.1  E: 125.667  W: 125.667
 N: -65.5167 S: -65.5167  E: 124.75  W: 124.75
 N: -65.583 S: -65.583  E: 122.583  W: 122.583
 N: -65.567 S: -65.567  E: 121.5  W: 121.5
 N: -65.55 S: -65.55  E: 118.867  W: 118.867
 N: -65.35 S: -65.35  E: 118.567  W: 118.567
 N: -64.95 S: -64.95  E: 119.13  W: 119.13
 N: -65.017 S: -65.017  E: 117.533  W: 117.533
 N: -64.883 S: -64.883  E: 116.967  W: 116.967
 N: -64.733 S: -64.733  E: 116.8167  W: 116.8167
 N: -64.3167 S: -64.3167  E: 116.8167  W: 116.8167
 N: -64.683 S: -64.683  E: 120.6167  W: 120.6167

Temporal Coverage
Start Date: 2007-09-11
Stop Date: 2007-10-10


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


Science Keywords
OCEANS >OCEAN CHEMISTRY >PIGMENTS    [Definition]
OCEANS >OCEAN OPTICS >ATTENUATION/TRANSMISSION    [Definition]
OCEANS >OCEAN OPTICS >EXTINCTION COEFFICIENTS    [Definition]
OCEANS >OCEAN OPTICS >IRRADIANCE    [Definition]
OCEANS >OCEAN OPTICS >RADIANCE    [Definition]
OCEANS >SEA ICE >ICE DEPTH/THICKNESS    [Definition]
OCEANS >SEA ICE >PACK ICE    [Definition]
OCEANS >SEA ICE >SNOW DEPTH    [Definition]
OCEANS >OCEAN CHEMISTRY >PIGMENTS >CHLOROPHYLL    [Definition]
OCEANS >OCEAN CHEMISTRY >CHLOROPHYLL


ISO Topic Category
BIOTA


Platform
FIELD SURVEYS    [Information]
R/V AA >R/V Aurora Australis


Quality
See the download file for further information.


Access Constraints
These data are publicly available for download 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=SIPEX_Bi... when using these data.


Keywords
SIPEX
Optics


Data Set Progress
COMPLETE


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: 2.6 MB
Distribution_Format: Excel, Text, Word
Fees: Free


Personnel
KLAUS MEINERS
Role: INVESTIGATOR
Role: TECHNICAL CONTACT
Phone: + 61 3 6226 7201
Email: klaus.meiners at acecrc.org.au
Contact Address:
Sea-ice Ecologist
Antarctic Climate and Ecosystems Cooperative Research Centre (ACE CRC)
Private Bag 80
City: Hobart
Province or State: Tasmania
Postal Code: 7001
Country: Australia


JASON ANDERSON
Role: DIF AUTHOR
Email: jason.anderson at utas.edu.au
Contact Address:
Antarctic CRC
University of Tasmania
Grosvenor St
City: Sandy Bay
Province or State: Tasmania
Postal Code: 7005
Country: Australia



Creation and Review Dates
DIF Creation Date: 2012-03-28
Last DIF Revision Date: 2014-01-10

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