Radiation in a Cloudy Atmosphere

The relation ships between the indicated radiation characteristics, the optical quantities directly determining them, the optically active compo nents of the atmosphere, and the meteorological fields will be discussed in this book.

Author: E.M. Feigelson

Publisher: Springer Science & Business Media

ISBN: 9789400964433

Category: Science

Page: 293

View: 157


Radiative heat transfer is a fundamental factor in the energetics of the terrestrial atmosphere: the system consisting of the atmosphere and the underlying layer is heated by the Sun, and this heating is compensated, on the average, by thermal radia tion. Only over a period of 1-3 days from some specified initial moment can the dynamic processes in the atmosphere be considered to be adiabatic. Global dynamic processes of long duration are regulated by the actual influxes of heat, one of the main ones being the radiative influx. Radiation must be taken into account in long-term, weather forecasting and when considering the global circulation of the atmosphere, the theory of climate, etc. Thus it is necessary to know the albedo of the system, the amount of solar radiation transmitted by the atmosphere, the absorptivity of the atmosphere vis-a-vis solar radiation, and also the effective radiation flux, the divergence of which represents the radiative cooling or heating. All these quantities have to be integrated over the wavelength spectrum of the solar or thermal radiation, and they must be ascertained as functions of the determining factors. The relation ships between the indicated radiation characteristics, the optical quantities directly determining them, the optically active compo nents of the atmosphere, and the meteorological fields will be discussed in this book.

Theoretical Fundamentals of Atmospheric Optics

The total absorption of solar radiation by the atmosphere–underlying surface system is 70% and 30% of solar ... The outgoing thermal radiation is 34% for the cloudless atmosphere 36% for the cloudy atmosphere which gives a total of 70%.

Author: Yu. M. Timofeyev

Publisher: Cambridge Int Science Publishing

ISBN: 9781904602255

Category: Science

Page: 480

View: 564


The authors of this book present the theoretical fundamentals of atmospheric optics as a science of the propagation, transformation and generation in the atmosphere of electromagnetic radiation from the ultraviolet to microwave range of the spectrum. The main characteristics of the planets of the solar system and atmospheres are described. Special attention is given to the equation of transfer of radiation in different spectrum ranges; the absorption of radiation by atmospheric gases and aerosol, molecular, aerosol and different types of non-resonant scattering; atmospheric diffraction; reflection of radiation from the surface; and glow of the atmosphere. They present the method of calculating radiation for the solar and thermal ranges of the spectrum. The monograph will be of interest to experts working in the areas of the physics and optics of the atmosphere and also suitable for students and postgraduates studying the physics of atmosphere, meteorology, physical ecology and monitoring of the environment.

3D Radiative Transfer in Cloudy Atmospheres

While energy budget calculations consist of performing calculations for radiation with wavelengths shorter than 60μm, a cloudy atmosphere is most transparent at wavelengths that exceed 1mm. Consequently, while longwave radiation with ...

Author: Alexander Marshak

Publisher: Springer Science & Business Media

ISBN: 9783540285199

Category: Science

Page: 686

View: 584


Developments in three-dimensional cloud radiation over the past few decades are assessed and distilled into this contributed volume. Chapters are authored by subject-matter experts who address a broad audience of graduate students, researchers, and anyone interested in cloud-radiation processes in the solar and infrared spectral regions. After two introductory chapters and a section on the fundamental physics and computational techniques, the volume extensively treats two main application areas: the impact of clouds on the Earth's radiation budget, which is an essential aspect of climate modeling; and remote observation of clouds, especially with the advanced sensors on current and future satellite missions.

Storm and Cloud Dynamics

5.4 Longwave Radiative Transfer in a Cloudy Atmosphere In this discussion, we refer to longwave radiation as radiation emitted by the earth's surface or the atmosphere having wavelengths greater than about 4 p.m. The effect of clouds on ...

Author: William R. Cotton

Publisher: Academic Press

ISBN: 9780080959832

Category: Science

Page: 883

View: 492


This book focuses on the dynamics of clouds and of precipitating mesoscale meteorological systems. Clouds and precipitating mesoscale systems represent some of the most important and scientifically exciting weather systems in the world. These are the systems that produce torrential rains, severe winds including downburst and tornadoes, hail, thunder and lightning, and major snow storms. Forecasting such storms represents a major challenge since they are too small to be adequately resolved by conventional observing networks and numerical prediction models. Key Features * Key Highlights of This Text * Provides a complete treatment of clouds integrating the analysis of air motions with cloud structure, microphysics, and precipitation mechanics * Describes and explains the basic types of clouds and cloud systems that occur in the atmosphere-fog, stratus, stratocumulus, altocumulus, altostratus, cirrus, thunderstorms, tornadoes, waterspouts, orographically induced clouds, mesoscale convection complexes, hurricanes, fronts, and extratropical cyclones * Presents a photographic guide, presented in the first chapter, linking the examination of each type of cloud with an image to enhance visual retention and understanding * Summarizes the fundamentals, both observational and theoretical, of atmospheric dynamics, thermodynamics, cloud microphysics, and radar meteorology, allowing each type of cloud to be examined in depth * Integrates the latest field observations, numerical model simulations, and theory * Supplies a theoretical treatment suitable for the advanced undergraduate or graduate level

Short Wave Solar Radiation in the Earth s Atmosphere

Currently known as a leading specialist in the problem of the interaction of the solar radiation , cloudy atmosphere and atmospheric aerosols . The collaboration with Academician Kirill Ya . Kondratyev has allowed an understanding of ...

Author: Irina N. Melnikova

Publisher: Springer Science & Business Media

ISBN: 3540214526

Category: Science

Page: 303

View: 500


Based on data from an experiment which ran for ten years, this book summarizes the results of the Atmospheric Physics Department of the St. Petersburg University and the Main Geophysical Observatory. The processed data now forms a rich dataset of spectral values of radiative characteristics under different atmospheric conditions. The analysis of this database clearly shows that the solar radiative absorption in a dusty and cloudy atmosphere is significantly higher than assumed to date. Both graduate students of atmospheric sciences as well as scientists and researchers in the field of meteorology and climatology will find a wealth of new data and information in this monograph.

Advances in Geophysics

On Determinations of the Atmospheric Turbidity and Their Relation to Pyrheliometric Measurements A. K. ÁNGSTRöM 9.1. ... Scattering of Solar Radiation within the Atmosphere . ... Terrestrial Radiation in a Cloudy Atmosphere .


Publisher: Academic Press

ISBN: 0080568424

Category: Science

Page: 414

View: 175


Advances in Geophysics

Physics of the Atmosphere and Climate

Extinction by cloud droplets greatly increases the SW opacity of the atmosphere. For cumulus 1 km thick and a ... Transmission of diffuse SW radiation through a cloudy atmosphere is then governed by the radiative transfer equation.

Author: Murry L. Salby

Publisher: Cambridge University Press

ISBN: 9780521767187

Category: Science

Page: 666

View: 617


Murry Salby's textbook provides an integrated treatment of processes controlling the Earth-atmosphere system for students and researchers.