Categories - NWP

65 posts in total

NWP | Pseudo-Global-Warming (PGW) hands-on | ERA5 | GFS

Introduction Keywords: The Pseudo-Global-Warming (PGW) approach CMIP6 how to convert ERA5 GRIB files to NetCDF format GRIB files are the file format used at ECMWF. GRIB is a WMO standard and consists

2025-02-03

NWP

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

NWP | Clear-sky vs. All-sky Approaches in NWP and DA

Clear-sky vs. All-sky Approaches in NWP and DA In the field of Numerical Weather Prediction (NWP) and Data Assimilation (DA), the clear-sky and all-sky approaches represent two different methodologies

2025-01-21

NWP

#MPAS #WRF #NWP #DA

NWP | Bias Correction

應用「模式輸出統計」校正數碼氣溫預報 | HKO | 2011 多元線性回歸及卡爾曼濾波出現次數最多的最佳因子，首三位為2米溫度、925hPa經向風及850hPa溫度應用「模式輸出統計」校正相對濕度及風的數碼預報 | HKO | 2012 把2010年9月至2011年8月的數據分為四季，分別找出不同統計模型在四季及全年(即2010年9月至2011年8月)的最佳因子組合。不同季節的比較

2025-01-02

NWP

#NWP #AI #ML

NWP | Non-hydrostatic numerical models for the atmosphere

A review of non-hydrostatic numerical models for the atmosphere Xu, L., Raman, S., & Madala, R. V. (1992, August). A review of non-hydrostatic numerical models for the atmosphere. In

2024-11-19

NWP

#MPAS #WRF #ECMWF #paper

NWP | ECMWF | IFS | Open data

Open Dataset ECMWF to achieve fully open data status in 2025 | 17 March 2025 ECMWF is bringing forward the full transition to open data by an entire year, to 1 October 2025, marking a significant mi

2024-11-12

NWP

#MPAS #WRF #WPS #IC/BC #ECMWF #IFS

NWP | ECMWF

The organisation was established in 1975 and now employs around 500 staff from more than 30 countries. ECMWF is one of the six members of the Co-ordinated Organisations, which also include the North A

2024-10-18

NWP

#MPAS #WRF #NWP #ECMWF #AI #ML

NWP | MPAS | Cold Start/Spin up/Warm Start

Cold Start/Warm Start NCAR NCAR | Real-Time Four-Dimensional Data Assimilation (RT-FDDA) Simulation is initialized using a 'cold start' methodology. This means that they start with no c

2024-10-16

NWP

#MPAS #WRF #NWP

NWP | AI for Numerical Weather Prediction (NWP)

Introduction to AI in Numerical Weather Prediction Artificial Intelligence (AI) is transforming the field of Numerical Weather Prediction (NWP), significantly enhancing the accuracy and efficiency of

2024-10-09

NWP

#NWP #AI #ML

Map of Local Climate Zones (LCZs)

Local Climate Zones (LCZs) Local Climate Zones (LCZs) are a classification system designed to characterize urban and natural environments based on their surface cover, structure, material, and human a

2024-10-07

NWP

#MPAS #WRF #Urban #UCM #LCZs #UCPs

Google Map

Embed Google Maps Easily embed and customize Google Maps on your web page or blog by setting the Google. To use the Maps Embed API on your web page, set the URL you've built as the value of an iframe'

2024-10-02

NWP

#MPAS #WRF #NWP #Google

WMO Information System 2.0 (WIS 2.0)

2024-10-02

NWP

#MPAS #WRF #NWP

Pseudo-Global Warming (PGW) - Future Projection

Pseudo-Global Warming (PGW) Definition and Concept Pseudo-Global Warming (PGW) is a regional climate modeling approach that involves imposing large-scale climate changes derived from global climate mo

2024-09-30

NWP

#MPAS #WRF #NWP #PGW

Climate Models

Climate models Climate models are systems of differential equations based on the basic laws of physics, fluid motion, and chemistry. To "run" a model, scientists divide the planet into a 3-dimensional

2024-09-30

NWP

#MPAS #WRF #NWP #PGW

Differences Between Weather Models and Climate Models

Differences Between Weather Models and Climate Models Understanding the distinctions between weather models and climate models is crucial for grasping how meteorologists and climate scientists predict

2024-09-30

NWP

#MPAS #WRF #NWP #PGW

GFS/FNL/RDA upgrade (2024)

RDA team RDA - Research Data Archive RDA Data Services Unavailable July 30, 2024 July 26, 2024 Posted by: RDA Team Update on July 31, 2024: standard data file download, THREDDS access, and Globus tr

2024-08-16

NWP

#MPAS #WRF #WPS #IC/BC #GFS #FNL #RDA #NCEP

ERA5 CDS upgrade (2024 Sep)

Climate Data Store (CDS) Some time ago, an upgrade notice was officially released on the Copernicus Climate Change Service (C3S) website. The old interface was closed in September 2024. Currently, the

2024-08-16

NWP

#MPAS #WRF #WPS #IC/BC #ERA5 #ECMWF

NWP | The orographic gravity wave drag (GWDO)

The wave stress of orography gravity wave drag scheme \[ \frac{\partial U}{\partial t} = - \frac{1}{\rho} \frac{\partial \tau_x}{\partial z} \] GWDO The gravity-wave drag parameterization \[ \tau_{GWD

2024-05-31

NWP

#GWDO #Parametrization

HKO station and analysis

Download HKO weather dataset From i-lens.hk 香港自動氣象站氣候觀測資料庫 12345678910export yyyy=2023export mm=04for dd in {14..16}; do wget http://i-lens.hk/hkweather/history_minute_record/${yyyy&

2023-06-24

NWP

#MPAS #WRF #HKO #obs

netCDF operator (nco, cdo)

ncrename - netCDF Renamer Options > -a old_name, new_name Attribute renaming. The old and new names of the attribute are specified by the associated old_name and new_name values. Global attributes

2023-06-24

NWP

#MPAS #WRF #netcdf #nco #cdo

Approximate Metric Equivalents for Degrees, Minutes, and Seconds

Approximate Metric Equivalents for Degrees, Minutes, and Seconds At the equator for longitude and for latitude anywhere, the following approximations are valid: 1234567891011121314151617181920211° = 1

2023-06-24

NWP

#MPAS #WRF