The key measures are the “Wet Bulb Globe Temperature” often used to screen for dangerous heat at sporting events and in workplaces, the “Wet Bulb Temperature” beloved of weather geeks, and “Apparent Temperature” quoted to the public by weather services. The bottom line is that the closer we are pushed to our physiological limits by extreme heat, the more important humidity becomes.
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If you are a stormchaser or just someone who loves the theatre of wind, lightning, heavy rain and hail when a storm whips through, then you are perfectly placed to help climate science with the new WeatheX app.
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The Extreme Rainfall Research Program of the Centre of Excellence for Climate Extremes (CLEX) held a workshop on October 4 at the University of New South Wales (Sydney). There were 30 participants representing the CLEX nodes, Bureau of Meteorology, CSIRO, NSW Office of Environment and Heritage and National Centre for Atmospheric Research.
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The study finds important regional consequences for precipitation and clouds formation if large changes in dimethyl-sulfide emissions were to occur. In a hypothetical case where all marine DMS emissions cease completely, we find the Earth would warm by approximately 0.5 degrees C over a ten-year period.
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This research demonstrates how cloud processes, steep mountains, tropical coastlines, the daily changes in solar insolation and planetary-scale waves work together to cause large variations in the tropical heating that drives global circulation patterns. Many of these effects are under-represented in global climate models.
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A new study by CLEX researchers using observations from FLUXNET sites identifies regions of high and low predictability and will likely help improve land surface model evaluation.
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Short, extreme rainfall events will increase in a warming climate, according to observations and...
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Convective parameterizations are widely believed to be essential for realistic simulations of the atmosphere, but are crude in today’s weather and climate models. CLEX researchers, report on what happens when a number of these models are run with these schemes simply turned off.
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In contrast to expectations, tropical thunderstorms without cold pools actually intensify, demonstrating unequivocally that cold pools can be detrimental to convection. Further investigations suggest that organised systems become maintained through atmospheric wave-convection interactions, which is a significantly different process to the established theory.
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This paper, A census of atmospheric variability from seconds to decades, synthesises and summarises atmospheric variability on time scales from seconds to decades through a phenomenological census. It focuses mainly on unforced variability in the troposphere, stratosphere, and mesosphere.
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