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4. Uk Weather Is Becoming More Extreme
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4. Uk Weather Is Becoming More Extreme

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4. Uk Weather Is Becoming More Extreme 4. Uk Weather Is Becoming More Extreme Presentation Transcript

  • UK weather is becoming more extreme. This has an impact on human activity which may be positive or negative .
  • Objectives
    • To describe the evidence that weather is becoming more extreme. Weather events from the last 10 years – a consideration of evidence that weather is becoming more extreme.
    • To explain the impact of this on people’s homes and lives, agriculture, health, transport
    • To explain the benefits and costs and issues raised
    • To explain the need for adequate warning, preparation, plans to deal with impacts.
  • starter
    • http://www.youtube.com/watch?v=eN2OJjd_fXw&feature=PlayList&p=C5B46D18D577C417&index=0
  • What do we mean by extreme weather?
    • More severe than usual
    • Very cold in winter
    • Heatwaves in summer
    • Heavy rain leading to flash floods
    • Drought
    • Gale and storm force winds
    • Blizzards and heavy snowfall
  • Recent extreme weather events in the UK (textbook page 62) Very wet summer – flooding May: Somerset Sept: S.Wales, Worcestershire, Northumberalnd 2008 Floods- Hull, Sheffield, Tewkesbury 2007 Intense heat wave. Highest ever temperature recorded in Kent 38.5o 2003 Series of deep depressions brought large amounts of rainfall, gale force winds to southern England 2000
  • Is it really ‘extreme’?
    • Why doesn’t the UK experience hurricanes but we do get small tornadoes?
    • Why do we not get a deep freeze like they do in Canada or Siberia?
    • Which extreme events are caused by high pressure dominating the weather for weeks and months?
    • Which extreme events result from low pressure and fronts sitting over the UK for several days instead of moving on?
    • Which extreme weather event is caused by a steep pressure gradient?
  • How does extreme weather impact… Transport Health Agriculture People’s homes and lives
  • Extreme weather costs and benefits Environmental Economic Social Benefit Cost
  • Links to global warming
    • Extreme weather events may become more frequent as the atmosphere warms up but no individual event can be blamed on global warming.
    • Evidence has to be drawn from hundreds of years before reliable links cam be made
  • Case study
    • You need to produce a case study summary of an ‘extreme’ weather event in the UK. Do this as an illustrated mind map
    • Choose either:
        • Boscastle flood 2004
        • or
        • summer floods 2007 (wettest summer on record)
    • include map, photos and bullet point facts
    • Headings to use:
      • Causes
      • Areas affected and damage
      • Economic impacts
      • Social impacts
      • Immediate responses
      • Long term responses and future planning
  • How can the negative impacts be reduced? * PREDICTION / WARNING Environment Agency How? Why? What can be done? *PREPARING What can individuals do? What can local authorities do? * PLANNING Emergency services Local councils
  • plenary