Category: RP3 Drought
Research brief: New model shows how air conditioners will change energy demand with climate change
This work describes a new cross-scale modelling framework for urban environments and applies it to calculate how electricity and gas demand will change under future climate change and air conditioner (AC) ownership scenarios.
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Research brief: Analysis of CABLE model in a WRF physics ensemble over Australia
CLEX researchers evaluated an updated version of CABLE climate model within a WRF physics ensemble over the CORDEX AustralAsia domain. Results were strongly dependent on the region of interest.
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Research brief: Aridity index too simplistic for climate projections
CLEX researchers and colleagues found the Aridity Index was too simplistic to capture the many aspects that define landscape aridity, including the amount of rainfall, water resources and vegetation productivity, and is a poor indicator of future aridity changes.
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Research brief: How to incorporate increased vapour pressure deficit into climate models
With projected increases in temperature in the future, the amount of water vapour that can be held at saturation – before it condenses into clouds, dew or water film – increases exponentially. As this deficit increases plants tend to close their stomata, which reduces water fluxes into the boundary layer. Do models currently capture the observed leaf-level response to increasing vapour pressure deficit? What about at very high levels of this deficit?
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Research brief: Rescuing centuries-old meteorological measurements
This paper documents the efforts of the international weather data rescue initiative ACRE, the International Surface Temperature Initiative and researchers that took part in workshops held in Bern, Switzerland, in June 2018 to rescue and digitize meteorological measurements taken prior to 1850 from around the world.
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2℃ of global warming would put pressure on Melbourne’s water supply
Melbourne’s existing water supplies may face pressure if global warming hits the 2℃ level. The effects of drying and warming in southern Australia are expected to reduce natural water supplies. If we overshoot 2℃ of warming, even the desalination plant might not provide enough drinking water to a growing population.
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Research brief: Phosphorus poor soils halve Amazon’s ability to take up carbon dioxide
This study showed that phosphorus availability reduced the projected CO2-induced biomass carbon growth by about 50% over 15 years compared to estimates from carbon and carbon-nitrogen models.
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Formation of the ACCESS oversight committee
This release is to advise the community that an ACCESS Oversight Committee has been formed initially comprising Christian Jakob, Rachel Law, Helen Cleugh, Andy Pitman, Tony Hirst, Peter May, David Karoly and Ben Evans. Terms of reference have been agreed to by the group and can be found at the end of this document.
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CMIP6 models produce higher equilibrium climate sensitivity
The Coupled Model Intercomparison Project (CMIP6) Model Analysis Workshop was held in Barcelona from March 25-28, 2019, and provided the first opportunity for results from CMIP6 models to be discussed and presented by the modelling community.
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Research brief: More accurate prediction of tree mortality during droughts
CLEX researchers working with colleagues from the Hawkesbury Institute for the Environment revealed a method to predict the probability of tree mortality during droughts.
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Research brief: Nutrient availability framework accurately forecasts plant growth from CO2 fertilisation effect
CLEX researchers and colleagues revisit the quasi-equilibrium analytical framework introduced by Comins and McMurtrie (1993) and explore the consequences of specific model assumptions for ecosystem net primary productivity (NPP).
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Research brief: Misclassification in climate models of land cover over East Asia has little impact on results
New CLEX research finds land cover misclassifications over South East Asia based on remote sensing products have negligible impact on the outcomes of climate model experiments. However, land cover experiments that incorporate uncertainties must use large numbers of simulations to get robust results for rainfall and air temperature.
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Research Briefs
Research brief: More hot days at the same global temperature in a warming world than a world where warming has plateaued.
Research brief: Satellite estimations may overcome data-sharing issues for precipitation
Research brief: SAM may be unrelated to mid-latitude weather.
Research brief: Algorithm improvements reduce errors in ocean chlorophyll observations