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2019-20 Honours project - Environmental Drivers of Antarctic Landfast Sea Ice Formation and Breakout

Antarctic Landfast sea ice (fast ice) is important climatologically, biologically and for logistics for short time-scale anomalies. Until recently, there hasn’t been an accurate, high-resolution fast ice extent dataset which can support an analysis on drivers of fast ice and most studies only investigate fast ice on limited regions of Antarctica in a limited time scale. There is a need to extend the spatial and temporal studying coverage to provide detailed information on the Antarctic coast over a longer period. This is the first detailed analysis to identify and quantify correlation between the environmental anomaly and fast ice anomaly mainly in the east Antarctic coast. By examining regional/local fast ice extent in in east Antarctic coast in the context of the broader and/or remote-teleconnected atmospheric circulation/properties using spatial correlation techniques, a strong correlation between NINO3 region and Lützow-Holm Bay fast ice and similar and significant correlation of regional scale factors from Lützow-Holm Bay to Mawson Coast mainly are found. The results of this thesis suggest that the pack ice, atmospheric factors and oceanic factors are important for interpreting fast ice anomalies. To identify and quantify correlation between the pack ice, temperature at 2m, wind at 10m, snow fall anomaly, sea surface temperature anomaly, ocean heat content anomaly and fast ice anomaly, backward multiple linear regression is conducted to demonstrate some predictive fast ice driver information by quantifying the correlation between different drivers and fast ice anomaly. The multiple linear regression also suggests that oceanic influences including pack ice are generally more important than atmospheric influences. Future experiments could be conducted to interpret fast ice anomalies in the context of the ocean mainly.

Simple

Identification info

Date (Creation)
2020-08-31

Principal investigator

Institute for Marine and Antarctic Studies (IMAS), University of Tasmania (UTAS) - Wang, Chenhui
IMAS - Hobart
Private Bag 129
Hobart
Tasmania
7001
Australia
Credit
IMAS Honours Student Program 2019-2020
Status
Completed

Point of contact

Institute for Marine and Antarctic Studies (IMAS), University of Tasmania (UTAS) - Wang, Chenhui
IMAS - Hobart
Private Bag 129
Hobart
Tasmania
7001
Australia
Topic category
  • Oceans

Extent

N
S
E
W


Temporal extent

Time period
2019-07-17 2020-09-02
Maintenance and update frequency
Not planned
Keywords (Theme)
  • Temperature
  • Concentration
  • Wind Speed and Direction
  • Heat Content
  • Precipitation
  • Fast ice
NASA/GCMD Keywords, Version 8.5
  • EARTH SCIENCE | CLIMATE INDICATORS | CRYOSPHERIC INDICATORS | SEA ICE CONCENTRATION
  • EARTH SCIENCE | CRYOSPHERE | SEA ICE
  • EARTH SCIENCE | CRYOSPHERE | SEA ICE | SEA ICE CONCENTRATION
  • EARTH SCIENCE | OCEANS | SEA ICE
  • EARTH SCIENCE | OCEANS | SEA ICE | ICE GROWTH/MELT
Australian and New Zealand Standard Research Classification (ANZSRC): Fields of Research
  • Palaeoclimatology
  • Climatology (excl. Climate Change Processes)
  • Glaciology

Resource constraints

Classification
Unclassified

Resource constraints

Use limitation
The data described in this record are the intellectual property of the University of Tasmania through the Institute for Marine and Antarctic Studies.

Resource constraints

Linkage
http://i.creativecommons.org/l/by/4.0/88x31.png

License Graphic

Title
Creative Commons Attribution 4.0 International License


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Website
http://creativecommons.org/licenses/by/4.0/

License Text

Other constraints
The citation in a list of references is: citation author name/s (year metadata published), metadata title. Citation author organisation/s. File identifier and Data accessed at (add http link).
Language
English
Character encoding
UTF8

Distribution Information

Distribution format
  • Dat. and Pro.

OnLine resource
DATA ACCESS - fast ice drivers ALL FILES [.zip direct downoad]

Resource lineage

Statement
Data is collected from ERA5 and analysed by IDL programming language.
Hierarchy level
Dataset

Metadata

Metadata identifier
49add25b-c9f7-4e6d-9407-376cbea45786

Language
English
Character encoding
UTF8

Point of contact

Institute for Marine and Antarctic Studies (IMAS), University of Tasmania (UTAS) - IMAS Data Manager

Type of resource

Resource scope
Dataset
Metadata linkage
https://metadata.imas.utas.edu.au/geonetwork/srv/eng/catalog.search#/metadata/49add25b-c9f7-4e6d-9407-376cbea45786

Point of truth URL of this metadata record

Date info (Creation)
2020-09-23T08:00:50
Date info (Revision)
2020-09-23T08:00:50

Metadata standard

Title
ISO 19115-3:2018
 
 

Overviews

Spatial extent

N
S
E
W


Keywords

Concentration Fast ice Heat Content Precipitation Temperature Wind Speed and Direction
NASA/GCMD Keywords, Version 8.5
EARTH SCIENCE | CLIMATE INDICATORS | CRYOSPHERIC INDICATORS | SEA ICE CONCENTRATION EARTH SCIENCE | CRYOSPHERE | SEA ICE EARTH SCIENCE | CRYOSPHERE | SEA ICE | SEA ICE CONCENTRATION EARTH SCIENCE | OCEANS | SEA ICE EARTH SCIENCE | OCEANS | SEA ICE | ICE GROWTH/MELT

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Access to the record in catalogue
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Associated resources

Not available


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