IMAS Metadata Catalogue
2019-20 Honours project - An analysis of the likelihood of meteorological conditions suitable for downburst thunderstorms over Tasmania using the BARRA reanalysis
This project will determine the downburst thunderstorms over Tasmania from the Severe Storms Archive, investigate the atmospheric condition during those downburst thunderstorms and determine the probability of meteorological conditions suitable for downburst thunderstorms over Tasmania during 1990-2019. This project will use the recently completed Bureau of Meteorology Atmospheric high-resolution Regional Reanalysis for Australia (BARRA) dataset, which offers more than 100 atmospheric model variables at higher resolution in space and time than existing global reanalyses (Jakob et al. 2017). The hourly temporal resolution, 70 levels vertical resolution and 1.5 km horizontal resolution, which has been developed specifically for Tasmania and other three regions, makes it particularly powerful in comparison to larger scale reanalyses for analysis of short-term phenomena like thunderstorms and their environments in Tasmania.
Simple
Identification info
- Date (Creation)
- 2020-08-31
Principal investigator
Principal investigator
Collaborator
Collaborator
Collaborator
- Credit
- IMAS Honours Student Program 2019-2020
Distribution Information
- Distribution format
-
- plots & figures in .jpg format, Matlab code (.m)
- OnLine resource
- DATA ACCESS - all Matlab code [.zip direct download]
- OnLine resource
- DATA ACCESS - Plots & Figures [.zip direct download]
Resource lineage
- Statement
- Crucially, BARRA also provides a lot of information that are not available from observations. This dataset provides output at hourly time steps for a full suite of atmospheric model variables (such as temperature, precipitation, wind speed and direction, humidity, evaporation, soil moisture, information at pressure and model levels, information on solar radiation and cloud cover) at either 1.5km or 12 km horizontal resolution and 70 vertical levels (Bureau of Meteorology, 2019a; Su et al., 2019). In this study, we will analyse the ambient temperature over the air, dew point temperature and wind data to obtain a series of indices. Downdraft Convective available potential energy (DCAPE) is the maximum energy available to a descending air mass and used to access the intensity of downdrafts potential in thunderstorms. WINDEX and GUSTEX can be used to assess the potential for the damaging wind gusts and can test their intensity. So, we can use those indicators to distinguish between damaging downburst days and non-severe days.
- Hierarchy level
- Dataset
Metadata
- Metadata identifier
- 9d953ce9-7b43-40e4-aa9e-8588b5491483
- 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/9d953ce9-7b43-40e4-aa9e-8588b5491483
Point of truth URL of this metadata record
- Date info (Creation)
- 2020-10-19T16:53:38
- Date info (Revision)
- 2020-10-19T16:53:38
Metadata standard
- Title
- ISO 19115-3:2018
Overviews
Spatial extent
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