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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 https://nomads.ncep.noaa.gov/gribfilter.php?ds=gfs_0p25 Example: 1htt

2025-02-19

MPAS

#NWP #WRF #MPAS #GFS #ERA5

WRF | MPAS | UCM Urban canopy parameters (UCPs)

Urban canopy parameters (UCPs) UCPs指的是都市地表參數，包括像地表粗糙度、植被覆蓋、建築密度等指標。這些參數在NWP模型中非常重要，因為它們會影響天氣模型對城市區域的天氣狀況模擬，例如溫度、濕度、風速等。接下來，我得解釋UCPs如何影響NWP模擬。這可能包括以下幾個面向：地表粗糙度會影響大氣層的摩擦，進而影響風的傳播和速度。植被覆蓋會影響輻射的吸收，改變熱平衡，

2025-02-18

WRF

#NWP #HPC #WRF #MPAS #HKO #UCM #LCZs #UCPs

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

#NWP #WRF #MPAS #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

#NWP #WRF #MPAS #GFS #ERA5 #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

#NWP #WRF #MPAS #GFS #ERA5

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

#NWP #WRF #MPAS #GFS #ERA5

NWP | Pressure Altitude Calculator

Pressure Altitude Calculator Pressure Altitude Pressure Altitude Calculator | NOAA What is the formula for the pressure altitude script? From the user, a station pressure ($P_{sta}$) is given. To

2025-02-07

NWP

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

NWP | PGW | Order of Pressure levels of GRIB file

NWP| Pseudo-Global-Warming (PGW) hands-on | ERA5 | GFS NWP| ERA5 | GRIB1 and GRIB2 In GRIB files, the order of pressure levels is important because many

2025-02-06

NWP

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

NWP | ERA5 | GRIB1 and GRIB2

WRF| GRIB1, GRIB2, NetCDF ERA5CDS upgrade (2024 Sep) GRIB GRIB is a WMO format for gridded data. GRIB is used by the operational meteorological centers

2025-02-05

NWP

#NWP #WRF #MPAS #GFS #ERA5 #PGW #NetCDF #CMIP6 #GRIB1 #GRIB2

NWP | Check grib files

2025-02-05

NWP

#NWP #WRF #MPAS #GFS #ERA5 #PGW #NetCDF #CMIP6 #GRIB1 #GRIB2 #grib