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Category Archives: Aerosols
Skirting the Issue
By Geoff Wadge During a major explosive volcanic eruption a set of three main processes transfers mass and heat from the solid earth to the atmosphere. These three processes are: a gas thrust (jet) extending up from the volcanic vent, … Continue reading
Posted in Aerosols, Environmental hazards, Environmental physics, Volcanoes
Tagged skirt cloud
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Simulating the effect of electrical charge on cloud drops using Direct Numerical Simulation
By Torsten Auerswald In the atmosphere, clouds develop when water vapour condenses leading to the formation of cloud drops. This process is usually supported by the presence of condensation nuclei which allow drop formation at low supersaturations. Aerosol particles in the … Continue reading
The Role of Synoptic Meteorology on UK Air Pollution
By Chris Webber In the past year the issue of air pollution within the UK has been elevated, driven by the loss of life that it causes (in 2013 > 500,000 years of UK lives lost due to air pollution … Continue reading
Posted in Aerosols, Atmospheric chemistry, Boundary layer, Environmental hazards, Urban meteorology
Tagged pollution
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Why has there been a rapid increase in heat-related extremes in Western Europe since the mid-1990s?
By Buwen Dong In the last few decades, Europe has warmed not only faster than the global average, but also faster than expected from anthropogenic greenhouse gas increases (van Oldenborgh et al., 2009). With the warming, Europe experienced record-breaking heat … Continue reading
Measuring radiation with aircraft
By Peter Hill In my career as an atmospheric scientist I’ve relied on observational data from a wide range of sources including satellite imagery, surface measurements, ground-based and satellite based radar, and aircraft measurements. Last July I had my first … Continue reading
Posted in Aerosols, Africa, Atmospheric chemistry, Climate, Climate change, Climate modelling
Tagged DACCIWA
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Geoengineering – how could we detect its cooling effect?
By Eunice Lo Sulphate aerosol injection (SAI) is one of the geoengineering proposals that aim to reduce future surface temperature rise in case ambitious carbon dioxide mitigation targets cannot be met. Climate model simulations suggest that by injecting 5 Tg of sulphur dioxide gas … Continue reading
Posted in Aerosols, Climate, Climate change, Climate modelling, Geoengineering
Tagged sulphate aerosol injection (SAI)
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The interaction between aerosols and clouds
By Nicolas Bellouin As part of the Copernicus Atmosphere Monitoring Service (CAMS), I lead an activity that will provide in August new estimates of radiative forcing of climate due to changes in atmospheric composition. One of the radiative forcing mechanisms … Continue reading
Posted in Aerosols, Climate modelling, Numerical modelling
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How do emissions in Abidjan affect the price of chocolate in the UK?
By Peter Hill The majority of the cocoa beans required to supply the world’s ever increasing demand for chocolate come from southern West Africa. Unfortunately, the volume produced, and consequently the cost of cocoa beans, is heavily dependent on the … Continue reading
Ah, the sweet smell of rain …
By Ellie Highwood Despite all the rain of the past winter, there is something about rain that I have missed – its perfume. As we head towards spring, with daffodils all around us already, I am looking forward to the … Continue reading
Posted in Aerosols, Atmospheric chemistry, Weather
Tagged 'smell of rain', petrichor
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Volcanoes as rain magnets
By Geoff Wadge When we have a very large volcanic eruption (as for example Mt Pinatubo in 1991) it gets global news coverage, not least because of its potential to perturb the climate. Whether smaller eruptions get widely noticed usually … Continue reading
Posted in Aerosols, Climate, Environmental hazards, Volcanoes, Weather
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