Categories - MPAS

50 posts in total

NWP | Boussinesq and Anelastic Approximations in Atmospheric Science

Simplifying the Skies: An Introduction to Boussinesq and Anelastic Approximations in Atmospheric Science In the quest to understand and predict the complex motions of the atmosphere, scientists rely o

2025-10-15

MPAS

#NWP #WRF #MPAS #Boussinesq #Anelastic #density

MPAS | meshDensity

dx_p, len_disp, and meshDensity in NWP and specifically in MPAS-A, and their relationships: Definitions: dx_p: dx_p generally refers to the horizontal grid spacing or the local mesh resolution. It

2025-09-26

MPAS

#NWP #MPAS #meshDensity #dx_p #gray zone

MPAS | Real-Time Forecasts

MMM Real-Time Forecasts (MPAS) https://project.mmm.ucar.edu/real-time-forecasts/ The real-time forecasts produced with the Model for Prediction Across Scales-Atmosphere (MPAS-A) . These experimental

2025-09-09

MPAS

#NWP #WRF #MPAS #MMM

MPAS | WRF | FDDA | Spectral nudging

Nudging Nudging, also known as four-dimensional data assimilation (FDDA), is a method of keeping simulations close to analyses and/or observations or forcing data over the course of an integration by

2025-06-24

MPAS

#NWP #WRF #MPAS #FDDA #Spectral nudging

MPAS | Scalability | Speedup

WRF | MPAS | MPI | halo/ghost cell MPAS | -fp-model precise Speedup Introduction Speedup tells you how much faster your parallel algorithm can be than its sequential counterpart. Scalability tel

2025-06-23

MPAS

#NWP #WRF #MPAS #partition #precise #intel #gfortran #ifort

MPAS | Long Term Run study

Long run study SST udpated I will analyze the experimental design involving a 1-year NWP simulation using MPAS-A initialized with ERA5 data, comparing a control run with initial conditions to an exper

2025-06-20

MPAS

#NWP #WRF #MPAS #Climate

MPAS | xtime to pd.datetime

MPAS xtime format 1234[[b'2023-01-01_00:00:00 '] [b'2023-01-01_12:08:00 '] [b'2023-01-

2025-06-20

MPAS

#NWP #MPAS

MPAS | -fp-model precise

Overview The -fp-model precise flag is a compiler option used to control floating-point behavior in programs, ensuring strict adherence to value-safe optimizations when implementing floating-point cal

2025-06-11

MPAS

#NWP #WRF #MPAS #partition #precise #intel #gfortran #ifort

NWP | Why is RH preferred over mixing ratio for initial moisture in NWP models

MPAS-A https://mpas-dev.github.io/atmosphere/mpas-a_release_notes.html https://github.com/MPAS-Dev/MPAS-Model/commit/635532ebd0677675eafcaa07c1bc701997b896fe MPAS-Atmosphere Version 5.3 22 March 201

2025-06-05

MPAS

#NWP #WRF #MPAS #GFS #ERA5 #RH #mixing ratio

MPAS | Joint MPAS/WRF Users Workshop 2025 | MPASv8.3.0

Joint MPAS/WRF Users Workshop 2025 | 3-6 June 2025 MPAS-Atmosphere Users' Guide V8.3.0 MPAS-A Technical Description Links https://mpas-dev.github.io/ /MPAS-Model/releases MPAS-Atmosphere Users' Gui

2025-06-05

MPAS

#NWP #WRF #MPAS #GFS #ERA5

$MPAS | WRF | cloud fraction | module_mp_thompson_cldfra3$

MPAS | WRF | cloud fraction | module_mp_thompson_cldfra3

Cloud fraction Cloud fraction is an important variable in numerical weather prediction (NWP) models that help to improve the accuracy of weather forecasts. It is a measure of the fraction of the sky t

2025-06-03

MPAS

#NWP #WRF #MPAS #cloud fraction #icloud

MPAS | WRF | CCPP Scientific Documentation

CCPP Scientific Documentation The scientific documentation for the parameterizations and suites available in the Common Community Physics Package (CCPP). The CCPP-Physics (available through h<ttps

2025-05-22

MPAS

#NWP #WRF #MPAS #CCPP

MPAS | WRF | MYNN

MYNN PBL scheme The Turbulent Kinetic Energy (TKE) budget equation in the Mellor-Yamada-Nakanishi-Niino (MYNN) PBL scheme of the WRF model and how they are outputted. The MYNN scheme is an improved ve

2025-05-22

MPAS

#NWP #WRF #MPAS #PBL #MYNN #TKE

MPAS | graph.info (Mesh Connectivity file)

2025-05-11

MPAS

#NWP #WRF #MPAS #mesh generation #Lloyd iteration #graph.info #MPAS-Tools #jigsaw

MPAS | mesh generation

2025-05-09

MPAS

#NWP #WRF #MPAS #mesh generation #Lloyd iteration #graph.info #MPAS-Tools #jigsaw

MPAS | PGW Literature Review

2025-04-29

MPAS

#NWP #HPC #WRF #MPAS #PGW

MPAS | WRF | Flerchinger USEd in NEW version. Iterations=10

This print comes from the Noah surface scheme, but if you weren't using that scheme, you likely would still get a segmentation fault. ▶phys/module_sf_noahlsm.F#L1572

2025-04-24

MPAS

#NWP #HPC #WRF #MPAS #Noah surface scheme

MPAS | Mesh Connectivity (graph.info) file for the mesh

https://mpas-dev.github.io/ /MPAS-Model/releases MPAS-Atmosphere Users' Guide V4.0 MPAS-Atmosphere Users' Guide V5.3 MPAS-Atmosphere Users' Guide V6.3 MPAS-Atmosphere Users' Guide V7.0 MPAS-Atmospher

2025-04-14

MPAS

#NWP #HPC #WRF #MPAS #mesh generation #graph.info #grid.nc

MPAS | Vertical Levels and Heights

WRF | Vertical Levels and Heights MPAS's user guide A description of the compressible nonhydrostatic atmospheric solver can be found in Skamarock et al, 2012. The fully compressible nonhydrostatic eq

2025-04-10

MPAS

#NWP #HPC #WRF #MPAS #UCM

MPAS | LBC

Links https://mpas-dev.github.io/ /MPAS-Model/releases MPAS-Atmosphere Users' Guide V4.0 MPAS-Atmosphere Users' Guide V5.3 MPAS-Atmosphere Users' Guide V6.3 MPAS-Atmosphere Users' Guide V7.0 MPAS-Atm

2025-03-14

MPAS

#NWP #WRF #MPAS #IC #LBC