A5014572931- Meteorological Phenomena and Simulations
- Climate variability and models
- Tropical and Extratropical Cyclones Research
- Computational Fluid Dynamics and Aerodynamics
- Advanced Numerical Methods in Computational Mathematics
- Atmospheric aerosols and clouds
- Plant Water Relations and Carbon Dynamics
- Geophysics and Gravity Measurements
- Atmospheric and Environmental Gas Dynamics
- Precipitation Measurement and Analysis
- Oceanographic and Atmospheric Processes
- Fluid Dynamics and Turbulent Flows
- Numerical methods for differential equations
- Ionosphere and magnetosphere dynamics
- Wind and Air Flow Studies
- Arctic and Antarctic ice dynamics
- Gas Dynamics and Kinetic Theory
- Calibration and Measurement Techniques
- Radiative Heat Transfer Studies
- Aerospace Engineering and Energy Systems
- Wind Energy Research and Development
- Methane Hydrates and Related Phenomena
- Natural Language Processing Techniques
- Multimodal Machine Learning Applications
- Hydrology and Watershed Management Studies
Chinese Academy of Meteorological Sciences
2015-2025
Central China Normal University
2024
University of Chinese Academy of Sciences
2019
Institute of Atmospheric Physics
2019
Imperial College London
2019
Chinese Academy of Sciences
2019
State Key Laboratory of Scientific and Engineering Computing
2019
Henan University
2019
Institute of Urban Environment
2019
Japan Agency for Marine-Earth Science and Technology
2002-2008
Abstract During the presummer rainy season (April–June), southern China often experiences frequent occurrences of extreme rainfall, leading to severe flooding and inundations. To expedite efforts in improving quantitative precipitation forecast (QPF) Meteorological Administration (CMA) initiated a nationally coordinated research project, namely, Southern Monsoon Rainfall Experiment (SCMREX) that was endorsed by World Organization (WMO) as development project (RDP) Weather Research Programme...
In early March of 2002, a massively-parallel-vector supercomputer, the Earth Simulator, came into operation, providing unique opportunity to perform simulations general circulation global atmosphere with horizontal resolution about 10 km. We employ model called AFES that has been fully optimized architecture attain extremely high com- putational efficiency. The ultra-high are able explicitly represent interaction among planetary, synoptic and meso-scale phenomena topographic modulation...
In this paper, we present two practical schemes for advection transport equation. The schemes, namely Conservative Semi‐Lagrangian with Rational function (CSLR0) and CSLR1, are new variants of the Constrained Interpolation Profile‐Conservative (CIP‐CSL) type methods [ Yabe et al. , 2001 ]. these subgrid profile is approximated within a single cell by rational interpolation functions. Both cell‐integrated average values at interfaces employed construction. interface value computed through...
Abstract Convective parameterization can drastically regulate the mean climate and tropical transient activity of a General circulation model (GCM). In this study, physics suite NCAR Community Atmosphere Model, version 5 (CAM5) was first ported to Global‐to‐Regional Integrated Forecast System model. Then, original convective CAM5—with separate representation deep convection Zhang–Mcfarlane (ZM) shallow University Washington (UW)—was replaced by double‐plume (DP) scheme. This DP scheme adopts...
Abstract A numerical model for shallow-water equations has been built and tested on the Yin–Yang overset spherical grid. high-order multimoment finite-volume method is used spatial discretization in which two kinds of so-called moments physical field [i.e., volume integrated average (VIA) point value (PV)] are treated as variables updated separately time. In present model, PV computed by semi-implicit semi-Lagrangian formulation, whereas VIA predicted time via a flux-based numerically...
Using the concept of anomaly integration and historical climate data, we have developed a novel operational framework to implement deterministic numerical weather prediction within 15 days. Real‐case validation shows pronounced improvements in forecasts global geopotential heights 20 out 30 cases with Community Atmosphere Model version 3.0. Seven other are marginally improved, only three deteriorated, which all ameliorated first‐week period. The average an obvious increase correlation...
The rapid development of wind energy in Japan and the associated high uncertainties fluctuations power generation present a big challenge for both generators electric grids. Accurate reliable predictions are necessary to optimize integration into existing electrical systems. In this study, hybrid forecasting system was developed by integrating Kalman filter (KF) with resolution Weather Research Forecasting (WRF) model as well an empirical formula output (power curve). has been validated...
Abstract A global model formulation for unified weather‐climate forecast is evaluated, with emphasis on the climate simulations at typical hydrostatic resolutions. The internal sensitivity explored by considering different dynamical configurations (resolution, solver type, transport scheme). After a basic assessment of mean climate, detailed analysis precipitation characteristics extended to East Asia. shows reasonable state, seasonal variation, frequency–intensity structure, and diurnal...
Abstract This study explored the complex evolution mechanism and fine‐scale structures of a quasi‐linear convective system (QLCS) in eastern Taihang Mountain from 1300 BST 12 to 0300 13 August 2018 by using Doppler radar data, high‐resolution surface observations sounding data. The QLCS which produced heavy precipitation was maintained as southeasterly being lifted when flowed over mesoscale outflow boundary (MOB) associated with cold pool. Topographic blocking effect environmental...
Abstract Study on the uncertainties in land surface models (LSMs) helps us understand differences and errors climate models. Meanwhile, uncertainty model structure, derived from many possible parameterization schemes for same physical subprocess, is a primary source of uncertainties. To attribute structural scheme uncertainties, it critical to identify key subprocesses involved investigate interactions these LSM behavior, which will ultimately help “optimal” various plant functional types,...
Abstract A conservative constraint is presented for a new quasi‐uniform overset (Yin‐Yang) grid on the sphere. The Yin‐Yang newly developed system in spherical geometry created by matching two notched latitude–longitude grids which are normal to each other. Global and local conservation achieved with an interpolation algorithm that exactly guarantees fluxes boundaries of components identical. Several numerical experiments shown confirm passive transport situations shallow‐water dynamical...
Abstract A conservative semi-Lagrangian scheme with rational function for interpolation is implemented in spherical geometry and tested an atmospheric general circulation model (AGCM). The new scheme, different from the conventional method, oscillation free. By introducing polar mixing a time split computation of divergence, can compute advection transport correctly over regions. Idealized tests various velocity fields were carried out to demonstrate numerical accuracy conservation...
Abstract The spatiotemporal characteristics of long‐duration heavy rainfall (LDHR) events are statistically analyzed using hourly surface observations over central‐southern North China during the warm seasons 2011–2018, revealing pronounced variabilities in frequency and amount LDHR. Two accumulated peaks found western (WHRR) eastern (EHRR) regions China. LDHR occurrence decreases westward, amount, intensity WHRR EHRR observed at nighttime (2100–0200 Beijing Standard Time) or early morning...
Abstract A global–regional-unified nonhydrostatic dynamical core was constructed on the Yin–Yang grid using a semi-implicit semi-Lagrangian solver. Arbitrary coordinate rotation possible for both global and limited-area models with multilevel nesting capability. Significant flexibility is available when configuring model’s horizontal mesh rotation. The performance of assessed series numerical tests in Cartesian spherical coordinates. results illustrate reasonable ability piecewise rational...
The water budget and energy exchange over the Tibetan Plateau (TP) region play an important role on Asian monsoon. However, it is not well presented in current land surface models (LSMs). In this study, uncertainties Noah with multiparameterization (Noah-MP) LSM are assessed through physics ensemble simulations three sparsely vegetated sites located central TP. impact of soil organic matter flux cycles, along influence precipitation explored using observations at those during third...
Abstract This paper presents a novel finite-volume grid that uses not only the volume-integrated average (VIA) like traditional method, but also surface-integrated (SIA) as model variables. The VIA and SIA are generically called “moments” in context used here carried forward time separately prognostic quantities. With defined control volume while is on surface of volume, discretization based leads to some new features numerical dispersions. A simple formulation using both for shallow-water...