Category Archive: Environment

Flooding in the UK

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Over the past week, heavy rain has lead to flooding across many parts of the UK causing millions of pounds worth of damage to homes and businesses, even taking a couple of lives. The most significantly affected area has been south-west England, closely followed by the Midlands, north-east England and Wales. With this in mind, we asked Sally Webb, our resident meteorologist, to walk us through exactly why this is happening? WHY IS IT SO BAD? The recent flooding is due to a succession of deep pressure systems moving across the UK. Each one has had a large frontal system associated with it and often a wrap-around occlusion (where a cold front catches up with a warm front) that becomes slow-moving. The depth of the system leads to the strong winds that have also battered many areas, knocking down trees and causing damage to buildings. Although the weather is not so unusual for autumn, it is unfortunate than the systems all seem …

Aerosol map of the world

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Greenhouse gases are not the only thing in the atmosphere to causes changes to our climate. This computer simulation from NASA (officially known as Goddard Earth Observing System Model, Version 5) shows aerosols spiralling through the atmosphere. While greenhouses gases tend to have a warming effect, aerosols cool the planet by reflecting more solar radiation back into space. Dominating the picture is an orange streak of sand, blown off the Saharan and Arabian deserts. Light blues in the northern and southern oceans are sea salt particles swirling around cyclones. In the north, gray smoke from fires, and white sulphates from industry emissions and volcanoes complete the picture. Over the years, a number of calls have been made to use aerosols to fight the increasing threat of global warming. It might seem sensible to release agents that causes cooling to balance the greenhouse gases that are causing warming. But as the picture above demonstrates, the atmosphere is an incredibly complex thing. Hundreds of factors determine what our climate …

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