90% of the heat trapped on Earth by anthropogenic greenhouse gasses is absorbed by the ocean, with the unfortunate by-product of thermosteric sea level rise - as the ocean warms, it expands. Therefore, it is essential that we can accurately measure how much heat the ocean is absorbing over time.
Tag Archive: climate models
The Weddell Gyre, located east of the Antarctic Peninsula, is one of the largest features of the ocean circulation of the Southern Hemisphere. A deeper understanding of the dynamics in this remote region will shed light on the role of the gyre in our present climate and help us understand its potential evolution with climate change.
You may have heard about the influence of sea surface temperatures (SSTs) in the tropical Pacific Ocean on Australia’s climate and how forecasts of the El Niño–Southern Oscillation (ENSO) help to give warnings of flood, drought and bushfire risk in Australia months in advance… but what about the tropical Indian Ocean?
CLEX researchers and colleagues used a land-surface model that considered groundwater dynamics to explain how groundwater sustains transpiration and eases plant heat pressure during the heatwaves that occurred during the Millennium Drought and the 2017-2019 severe drought over southeast Australia.
Hydrological impact studies analyse the effects of climate change on hydrological variables, such as changes in soil moisture, streamflow or hydrological extremes. This project aims to investigate the realised added value effect of model bias correction and downscaling methods on hydrological projections for Australia.
UTAS01: data collation of the climate-cooling gas dma in antarctic snow, sea ice and UNDERLYING sea waterAugust 18, 2021 9:29 am Comments Off on UTAS01: data collation of the climate-cooling gas dma in antarctic snow, sea ice and UNDERLYING sea water
Dimethyl sulfide (DMS) is a biogenic source of sulfate aerosol that influences the climate system by reducing solar radiation and altering cloud properties. Recent observations suggest that DMS may play a dominant role in the aerosol and cloud formation along the Antarctic coast where DMS is produced by marine microbes that reside on top, in, and under sea ice. However, the role of DMS remains unclear especially over the regional scale, partly due to the lack of compilation of DMS data.
Compound events (CEs) caused by a combination of multiple drivers often result in more severe socio-economic and ecological impacts than conventional events. One example for CEs with the potential to cause considerable negative impacts on crop yields and human health is the cooccurrence of hot and dry conditions. The student will work with climate model output from Earth System Models participating in the sixth round of the CMIP6 and assess what impact a gradual increase followed by a decrease in atmospheric carbon dioxide has on the occurrence frequency of hot and dry CEs.
UNSW05: Quantification of Continental-Scale shifts in Extreme Precipitation Intensity Across the GlobeAugust 18, 2021 9:15 am Comments Off on UNSW05: Quantification of Continental-Scale shifts in Extreme Precipitation Intensity Across the Globe
Due to the lack of appropriate historical datasets, quantification of shifts in global extreme precipitation intensity has not been possible so far. This project will use a recently developed long-term global dataset of daily precipitation alongside a dataset of global temperature changes to calculate the CC scaling for broad climatic regions across the globe.
UNSW04: IF It Rains Does It Pour? Understanding Concomitancy of Mean and Extreme Changes in Global Daily PrecipitationAugust 18, 2021 9:14 am Comments Off on UNSW04: IF It Rains Does It Pour? Understanding Concomitancy of Mean and Extreme Changes in Global Daily Precipitation
Recent research has shown that mean (raining) and extreme (pouring) changes can align in some regions. This project will use a recently developed long-term global dataset of daily precipitation to answer why, how and where changes in mean frequency and intensity align with changes in extreme frequency and intensity of precipitation.
The student will work with climate model output from Earth System Models participating in the sixth round of the Coupled Model Intercomparison Project (CMIP6) to assess how a gradual decrease in atmospheric carbon dioxide impacts carbon uptake and storage in the global ocean. Together with a partner project this project will test the reversibility of carbon emissions in terms of the marine system.