1. Australian Antarctic Data Centre
2. Discover and Manage Data
3. Records
4. 200708010

Description

This dataset contains the underway data collected during the Aurora Australis Voyage V1 2007/08 (SIPEX).
This voyage began in Hobart, and travelled to the ice edge where a large number of scientific observations were collected.
Underway (meteorological) data are available online via the Australian Antarctic Division Data Centre web page (or via the Related URL section).

See also other SIPEX metadata records.

From the voyage leader's report:

The Sea Ice Physics and Ecosystem eXperiment (SIPEX) was a multi-disciplinary science program focused on sea ice research in the region 115-130 E. There were 7 approved AAS proposals undertaken during the voyage:

AAS 2901: PI: Dr Tony Worby (20 people)
AAS 2767: PI: Klaus Meiners (18 people)
AAS 2752: PI: Peter Ralph (2 people)
AAS 2210: PI: Kelvin Michael (2 people)
AAS 2100: PI: Graham Jones (2 people)
AAS 1307: PI: Andrew McMinn (2 people)
AAS 472: PI: Graham Hosie (1 person)

The objectives of the voyage were to investigate the relationships between the physical sea ice environment and the sea ice biology, in particular the presence of algae and krill under the ice. A range of new instruments and techniques were used, including for the first time, radar and laser altimetry from helicopter for measuring the snow thickness and freeboard height above sea level. An instrumented Remotely Operated Vehicle (ROV) was used for making upward measurements of sea ice thickness and biomass concentration directly under the ice and a Surface and Under Ice Trawl (SUIT) was used for catching krill under the ice, clear of the ship's wake.

Quality

The data have been acquired at 0.1 Hz. There will be the occasional invalid value such as temperatures being out of range.

This dataset has not been checked. Please verify the data before use.

See the Marine Science Support Data Quality and Programmer's Reports at the Related URL section.

Where data for a particular sensor do not exist for a particular time, the last known value is used unless the sensor has been disabled or has encountered an error. For example, some sensors only record data every minute, but the resolution for the underway dataset is 10 seconds, so the same value will be used 6 times a minute. No averages are taken for sensors that capture data at a rate other than every 10 seconds. Instead, each record will be a snapshot of each sensor at that time.

Access

Data are available online via the AADC web page. A "supplementary" dataset is also available for download from the provided URL. It contains raw data collected directly from the ship, which has not been quality checked.

Reports from the voyage are also available for download.

Temporal Coverages

• Start date: 2007-08-29 - Stop date: 2007-10-16

Spatial Coverages

Science Keywords

• EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC PRESSURE > SEA LEVEL PRESSURE
• EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC TEMPERATURE > SURFACE TEMPERATURE > AIR TEMPERATURE
• EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WATER VAPOR > WATER VAPOR INDICATORS > HUMIDITY
• EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WINDS > WIND DYNAMICS > CONVECTION
• EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC RADIATION > SOLAR RADIATION

Use Constraints

This data set conforms to the CCBY Attribution License (http://creativecommons.org/licenses/by/4.0/).

Please follow instructions listed in the citation reference provided at http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=200708010 when using these data.