A5011815066- Meteorological Phenomena and Simulations
- Atmospheric aerosols and clouds
- Climate variability and models
- Precipitation Measurement and Analysis
- Arctic and Antarctic ice dynamics
- Tropical and Extratropical Cyclones Research
- Lightning and Electromagnetic Phenomena
- Optical Systems and Laser Technology
- Hydrological Forecasting Using AI
- Cryospheric studies and observations
- Ionosphere and magnetosphere dynamics
- Astronomical Observations and Instrumentation
- Geophysics and Gravity Measurements
- Computational Physics and Python Applications
- Stellar, planetary, and galactic studies
- Hydraulic and Pneumatic Systems
- Remote Sensing and Land Use
- Solar Radiation and Photovoltaics
- Superconducting Materials and Applications
- Atmospheric and Environmental Gas Dynamics
- Probabilistic and Robust Engineering Design
- Climate change impacts on agriculture
- Fire effects on ecosystems
- Ocean Waves and Remote Sensing
NOAA Earth System Research Laboratory
2024
Cooperative Institute for Research in Environmental Sciences
2022-2024
University of Colorado Boulder
2022-2024
Korea Institute of Atmospheric Prediction Systems
2015-2017
ABSTRACT Under the framework of Regional Climate Model Intercomparison Project (RMIP III), simulation results from six regional climate models (RCMs) and two global (GCMs) were used to generate extreme indices for present future over China using ensemble methods. All reasonably captured observed extremes, performance‐based averaging (PEA) outperformed individual model equal‐weighted (MME) control climate. However, noticeable cold deficiencies in temperature extremes found areas with complex...
In this study, we evaluated the simulation performance of Arctic mixed-phase clouds using Weather Research and Forecasting (WRF) Double-Moment 6-class (WDM6) scheme its improved version (WDM6_ICE). WDM6_ICE prognoses cloud ice number concentrations incorporates enhanced shape parameters formation processes. Sensitivity experiments were conducted during Mixed-Phase Cloud Experiment (M-PACE) period October 9–10, 2004.WDM6_ICE significantly simulation, showing low-level fraction more...
Abstract On August 8 and 9, 2022, a record-breaking rain rate of 142 mm h −1 , with an accumulated rainfall more than 500 mm, was observed in the Seoul metropolitan area, Republic Korea. This study focuses on analyzing concentration lightning southern Seoul, which occurred solely 8. It is worth noting that daily approximately twice 9 (381 vs. 198 9). The RKSG (located Yongin, 40 km south Seoul) Weather Surveillance Radar-1988 Doppler used to explore characteristics cloud microphysics...
In this study, global climate change scenario by Hadley Centre Global Environmental Model version 2-Atmosphere and Ocean (HadGEM2-AO) is dynamically downscaled using four regional models (RCMs).All RCMs with 12.5-km 50-km resolution are integrated for continuous 27 years .In general, higher horizontal more reasonably capture the spatial distribution of precipitation over South Korea compared to those lower resolution.In particular, heavy regions related complex mountain ranges well simulated...
The lower tropospheric enhanced gravity wave drag (GWD) parameterization has been operational in Global Forecast System (GFS) since late 1990s. scheme is based on Kim and Arakawa further revised with the addition of flow blocking (Kim Doyle). For UFSR2O project, there have collaborative efforts to improve GWD by revising mountain induced GWD. Revisions include updates (Choi Hong), turbulent orography form Beljaars et al. Sensitivity experiments are performed investigate importance...
<p>A semi-Lagrangian algorithm (SLA) is implemented in NOAA's Global Forecast System (GFS) for<br>simulating raindrop sedimentation a double-moment microphysics schemes. This SLA includes<br>a significant improvement to its predecessor for single-moment sedimentation. It is<br>numerically stable and mass-conserving when used sediment raindrops double-moment<br>microphysics Numerical results from an idealized single-column...
A new double-moment parameterization with in-cloud microphysical processes is developed for use in weather forecasting and climate studies. main ingredient of the scheme utilizes a concept to represent partial cloudiness effect on processes, following study Kim Hong (2018). The underlying assumption that all occur cloudy part grid box. Based long-term evaluation WRF Single-Moment (WSM) Double-Moment (WDM) schemes by community, several revisions are made microphysics terms, along newly...
<p>The behavior of two eddy-diffusivity mass-flux (EDMF) planetary boundary layer (PBL) schemes used in NOAA’s Global Forecast System is examined at the level mixing processes.  The examination performed by comparing 1-D simulations convective PBL growth using same physics configuration and sets initial atmospheric states extracted from three-dimensional (3-D) GFS conditions.  All show that TKE-EDMF scheme mixes...