Bella Blanche writes about spending time on the vast Macfarlane Station in Tambo, Queensland and introduces a methodology to assess risks posed by climate change, and the vulnerability of the native rangeland resources located west of the Great Dividing Range.
Urban Climate and Energy Model (UCLEM) is a new climate model focused on Australian conditions that integrates energy use and human behaviour to generate accurate representations of urban climates.
An international group of scientists has now forecast the likelihood global warming will exceed 1.5C over the next 5 years. This is one of the thresholds of the UNFCCC’s Paris Agreement, which aims “to strengthen the global response to the threat of climate change by keeping a global temperature rise this century well below 2°C above pre-industrial levels and to pursue efforts to limit the temperature increase even further to 1.5°C”.
Dáithí Stone National Institute of Water and Atmospheric Research, Wellington, New Zealand. Over the past couple of decades a large number of studies have diagnosed the contribution of emissions from human activities to observed climate trends, by confronting process-based expectations with long-term monitoring. Over the same period a much larger number of studies have diagnosed the contribution of observed climate changes to trends in various natural, managed, and human systems. For convenience and following IPCC terminology, we will refer to... View Article
Greg Holland A lot of attention has been given to the potential influence that climate change may have on tropical cyclone activity. But very little has been said about the way in which tropical cyclones influence climate. In this presentation, I will summarise the current understanding of tropical cyclone response to climate change, then move to a discussion of their role in the global atmospheric energy budget. Some speculation will be made on the relationship between the this role and... View Article
Andreas Oschlies (GEOMAR Helmholtz Centre for Ocean Research). Oceanic anoxic events have been associated with warm climates in Earth history, and there are concerns that current ocean deoxygenation may eventually lead to anoxia. On the contrary, results of a multi-millennial global-warming simulation reveal, after a transitory deoxygenation, a marine oxygen inventory 6% higher than preindustrial despite an average 3°C ocean warming. The initial, centennial-scale ~20% decline of oxygen is consistent with earlier studies and reflects changes in solubility and ocean... View Article
Deep ocean reefs are likely to transform with global warming bringing together species from temperate and tropical waters that may have never coexisted before, according to new research published in Nature Climate Change.
CLEX researchers find that ocean sea-ice models generally agreed on changes to average yearly cycle of freeze and melt in Antarctica, with dynamic processes dominating the sea ice edge and thermodynamic processes dominating the interior of the sea ice pack. However, the models disagreed about the trends of sea ice volume.
An unusually strong East Australian Current extension leads to an increased probability of marine heatwave days around Tasmania. Conversely, a strong Zeehan Current during these seasons decreased the probability of marine heatwave days in this region.
Heat waves are the deadliest natural hazard in Australia. Motivated by the prediction that the number of extremely hot days in subtropical Australia will increase in a warmer climate, this study aims to develop a comprehensive picture of the processes leading to extreme temperatures.