Categories - MPAS

47 posts in total

MPAS | WRF | precipitation calculation

Precipitation variables rainc: accumulated total cumulus precipitation rainsh: accumulated shallow cumulus precipitation rainnc: accumulated total grid scale precipitation snownc: accumulated total g

2025-03-10

MPAS

#WRF #MPAS #NWP #ERA5 #GFS #rainc #rainnc

MPAS | WRF | GFS-Wave GRIB files

Read MPAS | WRF | Extract subset of GFS GRIB files GFS Wave Model Forecast These models are based on the 3rd generation wave model WAVEWATCH III using operational NCEP products as input. WAVEWATCH

2025-02-28

MPAS

#WRF #MPAS #NWP #ERA5 #GFS #Wave

MPAS | MPAS-CMAQ | US EPA

MPAS-CMAQ The Next-Generation Air Quality Model | US-EPA | Motivation for Improving Combined Meteorological and Air Quality Models New meteorological models have been developed that include seamless

2025-02-27

MPAS

#WRF #MPAS #NWP #ERA5 #GFS #CMAQ #US EPA

MPAS | MPAS Version 8

Timeline MPAS-Atmosphere Version 8.2.2 | 20 September 2024 MPAS-Atmosphere Version 8.2.1 | 7 August 2024 MPAS-Atmosphere Version 8.2.0 | 27 June 2024 MPAS-Atmosphere Version 8.1.0 | 18 April 2024 MPA

2025-02-26

MPAS

#WRF #MPAS #NWP #ERA5 #GFS

MPAS | WRF | Atmospheric radiative transfer

Read MPAS |WRF | Solar Energy Radiative transfer Radiative transfer (also called radiation transport) is the physical phenomenon of energy transfer in the form of electromagnetic radiation. The prop

2025-02-20

MPAS

#WRF #MPAS #NWP #ERA5 #GFS #RRTM

MPAS | WRF | Extract subset of GFS GRIB files

GFS subset download NOMADS Data at NCEP https://nomads.ncep.noaa.gov/ https://nomads.ncep.noaa.gov/gribfilter.php?ds=gfs_0p25_1hr Example: 1https://nomads.ncep.noaa.gov/cgi-bin/filter_gfs_0p25_1hr.pl

2025-02-19

MPAS

#WRF #MPAS #NWP #ERA5 #GFS

MPAS | Variable-resolution mesh generation

MPAS variable-resolution mesh generation MPAS-Atmosphere Mesh Generation | Michael G. Duda | NCAR/MMM | MPAS-A and MPAS-JEDI Tutorials, 23-26 October 2023, Taiwan we employ Lloyd’s Method (Originall

2025-02-17

MPAS

#WRF #MPAS #NWP #mesh generation #Lloyd iteration

$MPAS | ERA5| Update SST and sea-ice fraction$

MPAS | ERA5| Update SST and sea-ice fraction

Generating SST and sea-ice update files https://www2.mmm.ucar.edu/projects/mpas/tutorial/Howard2024/index.html MPAS-Tutorial-NCAR-2023/mpas_tutorial | ftp Because MPAS-Atmosphere — at least, when ru

2025-02-14

MPAS

#WRF #MPAS #NWP #ERA5 #GFS #PGW #GRIB #NetCDF #CMIP6

MPAS | WRF | Solar Energy

太陽輻射陽光從太陽到達地球表面的過程中，有部分直接穿越大氣層到達地面，稱為太陽直接輻射。其餘的太陽光因被大氣中的空氣分子、水蒸氣及塵粒所散射或反射，而以間接的路徑抵達地面，稱為太陽漫射輻射。總太陽輻射是指所有到達地面的太陽光，即太陽直接輻射及太陽漫射輻射的總和。 Units: W/m2 在晴天，海平面上的最大正常全天空日射約為 $1000 W/m^{2}$ 太陽能是最充裕的再生能源，

2025-02-12

MPAS

#WRF #MPAS #NWP #ERA5 #GFS

MPAS | Physics and Physics Configurations, Profiling computing time

Physics and Physics Configurations Profiling computing time of MPAS the timer information that is printed at the bottom of the log.atmosphere.0000.out file. The total runtime for a simulation include

2025-02-11

MPAS

#WRF #MPAS #NWP #ERA5 #GFS

MPAS | UXarray

UXarray Xarray extension for unstructured climate and global weather data analysis and visualization written around the UGRID conventions. Why? UXarray aims to address the geoscience community need fo

2025-01-17

MPAS

#MPAS #UXarray

MPAS | Smagorinsky turbulence model | Eddy viscosity

Large eddy simulation (LES) Large eddy simulation (LES) is a mathematical model for turbulence used in computational fluid dynamics. It was initially proposed in 1963 by Joseph Smagorinsky to simulate

2024-12-10

MPAS

#WRF #MPAS #NWP #HPC

MPAS | MPAS-A Idealized Test Cases

MPAS-Atmosphere idealized test cases https://mpas-dev.github.io/atmosphere/test_cases.html The downloads below for MPAS-Atmosphere idealized test cases include the following:

2024-12-06

MPAS

#WRF #MPAS #NWP #HPC

MPAS | killed - signal X

KILLED BY SIGNAL: 9 (Killed) Ouf Of Memory (OOM). A rough approximation for the memory required to run a simulation on a mesh with N cells is N * 0.175 MB atmosphere_model - b

2024-11-18

MPAS

#WRF #MPAS #NWP

MPAS | NCL High-resolution coastlines

NCL High-resolution coastlines One way to get high-resolution coastlines in your NCL maps is by downloading and installing the multi-resolution coastline database RANGS (Regionally Accessible Nested G

2024-10-30

MPAS

#WRF #MPAS #NWP #HPC

MPAS | HPC file system failure or MPI failure

When having simulation on new cluster, we have issue about the failure of multiple nodes. node up infinite 2 idle node-[1,2] submit by 1 node, it is successful. submit by 2 nodes, it hangs. node-[1,3

2024-10-29

MPAS

#WRF #NWP #HPC

MPAS | Minimum computer resources for running MPAS

MPAS-A Amount of memory needed to run a particular simulation is to multiply the number of horizontal cells in the mesh by 0.175 MB/cell We find that on Cheyenne,

2024-10-28

MPAS

#WRF #NWP

MPAS | use_mp_re/config_microp_re -- use effective radii computed in mp schemes in RRTMG

In WRF, WRF Model Version 3.8: UPDATES Add a new namelist, use_mp_re, to control the interaction between effective radii computed in some microphysics with RRTMG radiation. {:.info} use_mp_re = 1 ! wh

2024-06-04

MPAS

#WRF #Parametrization

MPAS | Official MPAS Installation lib -- Preliminary requirements

Preliminary requirements: the easiest route Installing the full set of I/O libraries required by MPAS can be tedious. To make this easier, we've prepared a shell script that may be helpful: Preliminar

2024-06-03

MPAS

#Installation

MPAS | Installation by Spack and Intel

Using Spack Spack is a package management tool designed to support multiple versions and configurations of software on a wide variety of platforms and environments. It was designed for large supercomp

2024-06-01

MPAS

#MPAS #Installation #Spack #Intel