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.
Tag Archive: stomata
The drought program explains what is unusual about the current drought in Australia and in examining flaws in the Aridity Index explores how drought may change in the future.
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?