Versions Compared

Old Version 1

changes.mady.by.user Bob Owens

Saved on

compared with

New Version Current

changes.mady.by.user Bob Owens

Saved on

Key

  • This line was added.
  • This line was removed.
  • Formatting was changed.

...

Fig9.4.2-4: ecCharts time series and probe data for Ouargla (DAUU) and Ardra (DAUA) taken from the ecChart presentation of forecast data based on DT 00UTC 8 March 2019 (as for Fig9.4.2-1). The METARs at 09UTC 10 March 2019 show the very reduced visibility at these stations.  The time series shows the IFS forecast visibility varies with time but nowhere approaches the observed visibility.  The aerosol optical depth and dust aerosol optical depth forecast data gives greater indication of reduction in visibility due to dust and sand.  However there is no direct link between the aerosol optical depths and visibility reduction due to sand and dust but they are strongly indicative of areas at risk particularly where winds are forecast to be strong.


(FUG Associated associated with Cy50r1)