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On 27 April 2014 7pm local time (00UTC 28 April), tornadoes hit towns north and west of Little Rock, Arkansas.



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titleKey questions and tasks using the control forecast

  1. Understand the weather situation resulting in tornadoes
  2. Evaluate the control forecast and compare it to the ECMWF reanalysis and observations
  3. What is the area of threat according to the control forecast? Area of threat = the area where severe weather can expected. This can be identified by considering parameters such as CAPE, CIN, 850-hPa equivalent potential temperature. 
  4. How does the convective adjustment process takes place and and what is the role of large scale forcing (why and where it happens)?
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Case study: African deep convection

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titleKey questions and tasks using the control forecast

 

  1. Understand the weather situation over Africa.
  2. What is the role of large scale in this case (compare with N.America case).
  3. Look at the diurnal variation of key parameters (2m temperature, surface heat fluxes, precipitation, outgoing-longwave-radiation) for location 0N,25E.
  4. Compare differences in convection profiles between Central Africa and (i) open ocean, and (ii) Amazonia.
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Sensitivity experiments

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