Recommendations Emerging from PRA1 Discussion (Diurnal and Mesoscale Variability)

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Recommendations Emerging from PRA1
Discussion(Diurnal and Mesoscale Variability)

• Precipitation in LPB comes mainly from large MCSs
  with intense convection, often related to
  transients. In the SACZ region, this is less so,
  and even less so in Amazonia
• Diurnal cycle is a combination of the afternoon
  peak in ordinary convection and the broad
  nocturnal peak in MCS rains
• The 90-day SALLJEX period should be used for many
  model experiments, and to be most useful this
  requires reanalysis with all possible datasets
• The expanded rainfall database for SALLJEX should
  be used to help diagnose biases in the satellite
  rainfall algorithms
• ---------------------------------
• Enhanced datasets for LPB should be of 2
  distinct types
• 1) enhanced data for long-term
  monitoring
• 2) field program data for a limited time for
  targeted process studies
• High priority needs exist for continuous PDFs
  of rainfall rate, quantitative radar data, land
  surface hydrologic data, and wind and
  thermodynamic data.
• ( Include effects of ACC, notably
  deforestation and aerosols on precipitation
  processes-- efficiency, diurnal cycle, severe
  storms, ?)

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