相关实验视频

Updated: Sep 14, 2025

Exploring the Effects of Atmospheric Forcings on Evaporation: Experimental Integration of the Atmospheric Boundary Layer and Shallow Subsurface

Exploring the Effects of Atmospheric Forcings on Evaporation: Experimental Integration of the Atmospheric Boundary Layer and Shallow Subsurface

Published on: June 8, 2015

在印度使用天气研究预测-化学 (WRF-CHEM) 模型调查尘暴动态和闪电相互作用

V S Swathi¹, S K Panda¹, Unashish Mondal¹

¹Department of Atmospheric Science, School of Earth Sciences, Central University of Rajasthan, Kishangarh, Ajmer 305817, Rajasthan, India.

The Science of the total environment

|July 20, 2025

概括

这项研究表明,将尘埃纳入天气模型显著提高了闪电预测的准确性. 与没有尘埃的模型相比,采用尘埃电气化的WRF-CHEM模型更好地捕捉了闪电强度和尘埃暴动态.

科学领域:

大气科学大气科学
气象学天气学
环境科学环境科学

背景情况:

伴有闪电的沙尘暴构成重大自然危险,造成生命和财产损失.
准确预测这些事件对于减轻灾难至关重要.

研究的目的:

用数值建模研究尘暴和闪电之间的相互作用.
评估WRF-CHEM模型的性能,包括灰尘模拟和不包括灰尘模拟.

主要方法:

利用天气研究和预测模型与化学 (WRF-CHEM) 结合进行48小时的模拟.
在Uttar Pradesh上空比较了包括尘埃的场景和不包括尘埃的场景.
根据WWLLN和IITM数据验证的闪电模拟.
与ECMWF ERA5再分析数据相比,验证了气象参数.
使用NOAA HYSPLIT模型进行沙尘暴轨迹分析.

主要成果:

使用尘埃的WRF-CHEM精确模拟了闪电强度和尘暴路径/强度.
没有尘埃的模型低估了由于缺少尘埃电气化的闪电强度.
与没有尘埃的WRF相比,WRF-CHEM在尘埃条件下预测了更多的闪电.
闪电事件的空间分布是WRF-CHEM难以准确复制的挑战.

结论:

带有尘埃的WRF-CHEM模型在没有尘埃的WRF上表现出优越的性能.
尘埃电气化在增强沙尘暴期间闪电活动方面发挥着关键作用.
这些发现为改善与沙尘暴相关的雷暴和闪电预测提供了宝贵的见解.

关键词:

CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE CAPE was born in the late 1960s when he was born in the late 1960s when he was born in the 1970s 他的骨架分裂了.粒子云相互作用的相互作用乌达尔邦乌达尔邦乌达尔邦在WRF-CHEMEM中使用.

更多相关视频

Experimental Methods of Dust Charging and Mobilization on Surfaces with Exposure to Ultraviolet Radiation or Plasmas

Experimental Methods of Dust Charging and Mobilization on Surfaces with Exposure to Ultraviolet Radiation or Plasmas

Published on: April 3, 2018

Author Spotlight: Optimization of Airflow Velocities in Battery Cooling Systems for Enhanced Thermal Performance and Reduced Energy Consumption

Author Spotlight: Optimization of Airflow Velocities in Battery Cooling Systems for Enhanced Thermal Performance and Reduced Energy Consumption

Published on: November 3, 2023

相关概念视频

Electrostatic Boundary Conditions

Electrostatic Boundary Conditions

Consider an external electric field propagating through a homogeneous medium. When the electric field crosses the surface boundary of the medium, it undergoes a discontinuity. The electric field can be resolved into normal and tangential components. The amount by which the field changes at any boundary is given by the difference between the field components above and below the surface boundary.
The surface integral of an electric field is given by Gauss's law in integral form and is related to...

Precipitation Processes

Precipitation Processes

The experimental conditions in a gravimetric analysis should be optimized to maximize the particle size and purity of the obtained precipitate. Ideally, the concentration of the precipitating reagent should be low with effective stirring to maintain low relative supersaturation for the growth of large crystals. In homogeneous precipitation, the precipitant is slowly generated by a chemical reaction in the solution to avoid local reagent excesses. For example, urea decomposes gradually to...

Washing, Drying, and Ignition of Precipitates

Washing, Drying, and Ignition of Precipitates

After filtration, the precipitate is washed to remove coprecipitated impurities and any remaining mother liquor. Colloidal precipitates, such as silver chloride, are washed with an electrolyte (such as dilute nitric acid) to prevent the peptization of the precipitate. In the case of slightly soluble precipitates, the wash solution contains a common ion to reduce solubility. Lead sulfate, which is slightly soluble in water, is washed with dilute sulfuric acid. Similarly, wash solutions may be...

Magnetostatic Boundary Conditions

Magnetostatic Boundary Conditions

An electric field suffers a discontinuity at a surface charge. Similarly, a magnetic field is discontinuous at a surface current. The perpendicular component of a magnetic field is continuous across the interface of two magnetic mediums. In contrast, its parallel component, perpendicular to the current, is discontinuous by the amount equal to the product of the vacuum permeability and the surface current. Like the scalar potential in electrostatics, the vector potential is also continuous...

Electrostatic Boundary Conditions in Dielectrics

Electrostatic Boundary Conditions in Dielectrics

When an electric field passes from one homogeneous medium to another, crossing the boundary between the two mediums imparts a discontinuity in the electric field. This results in electrostatic boundary conditions that depend on the type of mediums the field propagates through.
Consider a case where both the mediums across a boundary are two different dielectric materials. Recall that the electric field and electric displacement are proportional and related through the material's...

Precipitation of Ions

Precipitation of Ions

Predicting Precipitation
The equation that describes the equilibrium between solid calcium carbonate and its solvated ions is: