Photo: H. Nyman

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August 2006 Forest FiresCase study using
Testbed observationsNoora Eresmaa1Minna
Rantamäki1Mostamandy Suleiman21 Finnish
Meteorological Institute2
Photo H. Nyman
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Motivation

• Health effects caused by the smog
• Smog was in the public gaze in August
• If we want to forecast something, we need to
  understand the phenomenon

Figure 1. The synoptic situation at 21 August
00UTC over Europe
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Data

• Surface observations
• Wind parameters
• Rain location and intensity precipitation rate
• Temperature
• Doppler lidar
• SODAR
• RASS and ceilometer?
• Regular observations from Finland, Russia and
  Estonia
• YTV and FMI concentration observations

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• Figure 2. A 24-h period of ceilometer echo
  intensity observations at Vallila, Helsinki, 21
  August 2006. The height of the MHs determined by
  the ceilometer and radiosoundings (Richardson
  number method) are superimposed on the ceilometer
  raw echo data.

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Things to learn

• How useful are the Testbed observations?
• Can we use the Testbed data in long or regional
  range pollution transport (e.g. smog) episodes?
• How to use Testbed data better?
• Better understanding in mesometeorology