Author Archives: danaallen

The latest on aerosol radiative forcing

By: Nicolas Bellouin Aerosols are tiny liquid or solid particles suspended in the Earth’s atmosphere. Some aerosols form naturally, like the sea spray emitted by breaking waves, the mineral dust that form sandstorms, or smoke from wildfires. But human activities, … Continue reading

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Howling Space Gales and why we should photograph them.

By: Luke Barnard Most people are familiar with the fact the Sun emits a range of electromagnetic radiation (e.g. sunlight), and that this radiation is necessary to sustain life on Earth as we know it. What is less well known … Continue reading

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Trading Evil lasers for MAGIC Doppler lidars

By: Janet Barlow  Lasers may have an evil reputation in Hollywood, but they are very good for observing urban meteorology. We recently took part in the MAGIC project field campaign in London, deploying a Doppler lidar to measure wind-speed around … Continue reading

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Don’t (always) blame the weather forecaster

By: Ross Bannister There are (I am sure) numerous metaphors that suggest that a small, almost immeasurable event, can have a catastrophic outcome – that adding the proverbial straw to the load of the camel will break its back. In 1972, … Continue reading

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High-resolution insights into future European winters

By: Alexander Baker Figure 1: Observed UK rainfall anomaly as a percentage of 1981-2010 monthly average for (a) December 2013, (b) January 2014, and (c) February 2014. Figure from Huntingford et al. (2014). Most – roughly 70% – of Europe’s winter … Continue reading

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Turbulence Matters

By: Torsten Auerswald Most people are only consciously aware of the existence of turbulence when the pilot announces it. But apart from the discomfort of a bumpy flight, turbulence affects us in many other important aspects of daily life. The … Continue reading

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The consequences of climate change: how bad could it get?

By: Nigel Arnell The United Nations Climate Action Summit held in New York on 23rd September was meant to be the occasion where countries and industry organisations made stronger commitments to reduce the emissions of the greenhouse gases that are … Continue reading

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Probing the atmosphere with sound waves

By: Javier Amezcua Summer is a quiet time for both the University of Reading and the town itself. The buzzing that fills campus during term time is gone, the population decreases and activities are reduced. Some people find it relaxing … Continue reading

Posted in Climate, data assimilation, Stratosphere, Wind | Leave a comment

Coffee and atmospheric physics

by: Prof Maarten Ambaum Every morning I trundle down to the office kitchen and I make myself a whole thermos flask of coffee which keeps me going for the rest of the day. In fact, most people in our Department … Continue reading

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Do we have an appropriate description of energetic particles in the Earth’s outer radiation belt?

By: Oliver Allanson Figure 1: A particle undergoes Brownian motion. The short answer: probably not, at least not all of the time. In our state-of-the-art and physics-based numerical experiments, we analyse the motion of 100 million individual high-energy electrons that evolve … Continue reading

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