The heating rate database

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The heating rate database

• Bart vd Hurk

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General overview

• Derived from METEOSAT
• Atmospheric correction applied
• Separately calculated for low veg and high veg
  tiles
• Vegetation types derived from ECOCLIMAP dbase

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Domain

• Raw dataset at METEOSAT resolution (appr 5-7 km)
• ECOCLIMAP database interpolated to this
  resolution
• Aggregation (linear averaging) to ELDAS grid
• METEOSAT domain smaller than ELDAS domain

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Domain
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Processing

• 1 heating rate per day (based on half-hourly
  METEOSAT data)
• No data when
• No cloudfree data for less than 2 hours
• RMS of linear regression dTs/d cos? gt threshold
• No METEOSAT data in archive/out of domain

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Missing data errors

• Error indicators processed
• Length of time interval
• Number of valid METEOSAT pixels in ELDAS grid box
• RMS of d Ts/d cos?
• Contribution of atmospheric correction to heating
  rate
• Fixed error optimal (as in Giselas study)?

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Various

• Grib codes
• unknown
• Delivery to MARS within couple of weeks
• Clean experiment of effect of heating rates on
  soil moisture in LAM planned later this
  year/early 2004
• 2003 data base not yet started but planned early
  2004