Implementation of a positive definite mass-flux scheme and a method for removing the negative tracers in the NCEP GFS planetary boundary layer and cumulus convection schemes

Details

• Personal Author:
  Han, Jongil ; Yang, Fanglin ; Montuoro, Raffaele ; Li, Wei ; Sun, Ruiyu
• Corporate Authors:
  National Centers for Environmental Prediction (U.S.)
• NOAA Program & Office:
  NWS (National Weather Service) ; NCEP (National Centers for Environmental Prediction) ; CIRES (Cooperative Institute for Research in Environmental Sciences)
• Description:
  A positive definite mass-flux transport scheme and a method for removing negative tracer mixing ratio values have been implemented into the NCEP GFS planetary boundary layer and cumulus convection schemes. The unrealistic negative values caused by either the discretization scheme or numerical artifacts have been successfully removed with no adverse impacts on the GFS weather forecasts.
• Keywords:
  Boundary Layer (Meteorology) Clouds Numerical Weather Forecasting Water Vapor, Atmospheric Boundary Layer (Meteorology) Numerical Weather Forecasting Water Vapor, Atmospheric
• Series:
  Office note (National Centers for Environmental Prediction (U.S.))   506
• DOI:
  https://doi.org/10.25923/5051-3r70
• Document Type:
  Office Note
• Place as Subject:
  United States
• Rights Information:
  Public Domain
• Compliance:
  Submitted
• Main Document Checksum:
  urn:sha256:50935eafec4a973e7ef679388787fd0dafc5bcacfb3ad78c1ec12b6dfb5b3165
• Download URL:
  https://repository.library.noaa.gov/view/noaa/36734/noaa_36734_DS1.pdf
• File Type:
  [PDF - 1.06 MB ]