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

Han, Jongil; Yang, Fanglin; Montuoro, Raffaele; Li, Wei; Sun, Ruiyu

doi:10.25923/5051-3r70

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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

2022
By Han, Jongil ; Yang, Fanglin ; Montuoro, Raffaele ; ...
Series: Office note (National Centers for Environmental Prediction (U.S.)) ; 506

[PDF-1.06 MB]

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Personal Author:

Han, Jongil ; Yang, Fanglin ; Montuoro, Raffaele ; Li, Wei ; Sun, Ruiyu

Han, Jongil ; Yang, Fanglin ; Montuoro, Raffaele ; Li, Wei ; Sun, Ruiyu Less -
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)

NWS (National Weather Service) ; NCEP (National Centers for Environmental Prediction) ; CIRES (Cooperative Institute for Research in Environmental Sciences) Less -
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:

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Boundary Layer (Meteorology) Clouds 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
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Submitted
Main Document Checksum:

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urn:sha256:50935eafec4a973e7ef679388787fd0dafc5bcacfb3ad78c1ec12b6dfb5b3165
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https://repository.library.noaa.gov/view/noaa/36734/noaa_36734_DS1.pdf
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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

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