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
- Credit
- IMAS Honours Student Program 2019-2020
- Status
- Completed
Point of contact
- Topic category
-
- Oceans
Extent
))
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
- Australian and New Zealand Standard Research Classification (ANZSRC): Fields of Research
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
- 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.
-
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
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
))
Provided by
