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Category Archives: Weather
How the Hadley Cells work
By Gui-Ying Yang The Hadley Cell, named after British meteorologist George Hadley who discovered this tropical atmospheric overturning circulation, is one of the basic concepts in weather and climate. Figure 1 shows the zonal mean overturning circulation in a latitude height … Continue reading
Image conscious atmospheric science
By Giles Harrison A frequently-heard mantra in physics is “Like charges repel and unlike charges attract”. At face value this paraphrase of Coulomb’s Law seems useful for clouds too, as, quite apart from the obvious example of thunderclouds, water drops … Continue reading
Sting jets in winter storms : how do the winds get so strong?
By Ambrogio Volonté Figure 1: Windstorm Tini (12 Feb 2014) passes over the British Isles bringing extreme winds. A sting jet has been identified in the storm. Image courtesy of NASA Earth Observatory The arrival of a winter storm battering … Continue reading
Summer temperatures 2018 – the ‘new normal’?
By Professor Sir Brian Hoskins (Grantham Institute, Imperial College London and Emeritus Professor at the University of Reading department of Meteorology) and Stephen Belcher (Met Office Chief Scientist and Visiting Professor at the University of Reading department of Meteorology) Figure 1. Hyde … Continue reading
What a summer!
By Ben Cosh What a summer it has been so far. The data is brilliant when it is like this. Stephen Burt keeps an eye on it and has filled me in on the (nearly) record-breaking numbers we’re seeing. It’s … Continue reading
Posted in Climate, Historical climatology, Weather
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DARE to use datasets of opportunity
By Joanne Waller To accurately forecast the weather, we must first describe what is currently happening in the atmosphere. To determine the current atmospheric state, we could use: Previous forecasts (data from complex computational models of the atmosphere) which provide … Continue reading
Stronger windstorms and higher wind risk in a warmer climate
By Oscar Martínez-Alvarado The most devastating type of winter storms to affect north-west Europe are characterised by a descending jet of air, known as a sting jet, that can result in strong, localised surface winds and wind gusts in a region … Continue reading
Posted in Climate, Climate change, Climate modelling, Environmental hazards, extratropical cyclones, Weather
Tagged sting jet
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Heat waves of the past decade in Chinese mega-cities: a quick review
By Ting Sun Although cities are often already warmer than their rural surroundings (the well-known “urban heat island” effect), heat waves (HWs), excessively hot periods, will not only enhance the urban and rural temperatures but also exacerbate the contrast between … Continue reading
Posted in China, Climate, Climate change, Environmental hazards, Waves, Weather
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Reducing climate change from aviation: could climate-friendly routing play a part?
By Emma Irvine It’s commonly known that burning fossil fuels, like in jet engines, leads to the emission of carbon dioxide (CO2) which causes global warming. It is perhaps less well known that, particularly in the case of aviation, carbon … Continue reading
Posted in Atmospheric chemistry, aviation, Climate, Weather, Weather forecasting
Tagged contrails
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Nice weather, atmospheric blocking and forecasts
By Oscar Martinez-Alvarado With the beginning of spring (either the ‘meteorological’ spring on 1 March or the ‘astronomical’ spring on 20 March, as the Met Office explains here), the UK and indeed the whole Northern Hemisphere start experiencing warmer weather. The … Continue reading
Posted in Climate, Environmental hazards, Numerical modelling, Weather, Weather forecasting
Tagged blocking
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