Etude Theorique Et Experimentale Des Proprietes Optiques Et Radiatives Des Cirrus

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Etude théorique et expérimentale des propriétés optiques et radiatives des cirrus

Author : Hélène Chepfer
Publisher :
ISBN 13 :
Total Pages : 394 pages
Book Rating : 4.:/5 (49 download)

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Book Synopsis Etude théorique et expérimentale des propriétés optiques et radiatives des cirrus by : Hélène Chepfer

Download or read book Etude théorique et expérimentale des propriétés optiques et radiatives des cirrus written by Hélène Chepfer and published by . This book was released on 1997 with total page 394 pages. Available in PDF, EPUB and Kindle. Book excerpt: La comparaison des différentes mesures avec les modeles montre que les données de polarisation (POLDER et lidar) sont très discriminantes pour la microphysique (forme, taille, orientation des cristaux), et que la combinaison de différentes mesures permet de réduire le nombre de modèles susceptibles de les expliquer. Une étude de sensibilité du forçage radiatif met en évidence l'impact important de l'orientation préférentielle des cristaux de glace dans le cirrus.

Étude des propriétés optiques et radiatives des cirrus par télédétection active

Author : Vincent Noe͏̈l
Publisher :
ISBN 13 :
Total Pages : 159 pages
Book Rating : 4.:/5 (78 download)

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Book Synopsis Étude des propriétés optiques et radiatives des cirrus par télédétection active by : Vincent Noe͏̈l

Download or read book Étude des propriétés optiques et radiatives des cirrus par télédétection active written by Vincent Noe͏̈l and published by . This book was released on 2002 with total page 159 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Étude des propriétés optiques et radiatives des nuages de type cirrus déduites de la synergie des mesures de rayonnement passif et actif

Download Étude des propriétés optiques et radiatives des nuages de type cirrus déduites de la synergie des mesures de rayonnement passif et actif PDF Online Free

Author : Odran Sourdeval
Publisher :
ISBN 13 :
Total Pages : 220 pages
Book Rating : 4.:/5 (869 download)

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Book Synopsis Étude des propriétés optiques et radiatives des nuages de type cirrus déduites de la synergie des mesures de rayonnement passif et actif by : Odran Sourdeval

Download or read book Étude des propriétés optiques et radiatives des nuages de type cirrus déduites de la synergie des mesures de rayonnement passif et actif written by Odran Sourdeval and published by . This book was released on 2012 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt: Les nuages de glace de type cirrus sont reconnus comme ayant un impact radiatif important mais encore mal déterminé sur le système Terre-atmosphère. Récemment, la constellation de satellites A-Train a efficacement contribué à leur étude, grâce un panel d’instruments en parfaite synergie les uns avec les autres. Dans cette thèse, nous proposons d’utiliser l’instrumentation de l’A-Train afin d’étudier les propriétés optiques et radiatives des cirrus. Dans un premier temps, des données issues de deux campagnes aéroportées sont utilisées, afin d’effectuer une validation des mesures du radiomètre infrarouge spatial IIR. Nous montrons de très bonnes similitudes entre les mesures radiométriques aéroportées et spatiales, ce qui permet de conclure à la validation de ces dernières. Une seconde étude présente un algorithme développé dans le but de restituer l’épaisseur optique des cirrus et la dimension effective des cristaux qui les composent, à partir des mesures de IIR. Nous montrons que ses résultats sont en accord avec des mesures in situ et des produits opérationnels, mais remarquons cependant que leur qualité pourrait être améliorée dans l’hypothèse d’une meilleure connaissance des propriétés de nuages d’eau liquide sous-jacents. Une troisième étude propose donc une amélioration de cet algorithme, permettant de restituer simultanément les propriétés d’une couche de nuage de glace et de deux couches de nuage d’eau liquide. Cet algorithme ’multi-couches’ est appliqué sur un grand nombre de cas, de manière à juger efficacement de la qualité de ses résultats. Des comparaisons avec divers produits opérationnels montrent une bonne cohérence de nos restitutions.

Etude des propriétés optiques et radiatives des cirrus à l'aide de modèles microphysiques élaborés

Author : Laurent Couillard-Labonnote
Publisher :
ISBN 13 :
Total Pages : 212 pages
Book Rating : 4.:/5 (492 download)

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Book Synopsis Etude des propriétés optiques et radiatives des cirrus à l'aide de modèles microphysiques élaborés by : Laurent Couillard-Labonnote

Download or read book Etude des propriétés optiques et radiatives des cirrus à l'aide de modèles microphysiques élaborés written by Laurent Couillard-Labonnote and published by . This book was released on 2001 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Etude théorique et expérimentale des propriétés optiques non linéaires

Author : Hasnaa El Ouazzani
Publisher : Omniscriptum
ISBN 13 : 9786131591624
Total Pages : 132 pages
Book Rating : 4.5/5 (916 download)

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Book Synopsis Etude théorique et expérimentale des propriétés optiques non linéaires by : Hasnaa El Ouazzani

Download or read book Etude théorique et expérimentale des propriétés optiques non linéaires written by Hasnaa El Ouazzani and published by Omniscriptum. This book was released on 2015-06-24 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt: Les ph nom nes de l'optique non lin aire permettent de r aliser des dispositifs plus efficaces et plus compacts assurant des fonctions telles que la conversion de fr quence ou le traitement du signal. Cependant, les applications dans le domaine de photonique n cessitent la synth se des mat riaux performants et sp cifiques. En raison de leur facilit de mise en oeuvre et de leur possibilit d'optimisation, des compos s organiques conjugu s de type push-pull ont t synth tis s. Ce travail concerne l' tude des propri t s optiques lin aires et non lin aires des mol cules photochromiques, de type azobenz ne, associ es des syst mes polym riques. Ensuite, une nouvelle structure mol culaire base de la mol cule 'la quinol ine' a t tudi e. Ces syst mes fort transfert de charge intramol culaire repr sentent des mat riaux mieux adapt s et des candidats int ressants pour ce domaine.

Étude des propriétés macrophysiques et optiques des cirrus à l'aide d'un micro-lidar sur le site de Lille

Author : Rita Nohra
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (958 download)

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Book Synopsis Étude des propriétés macrophysiques et optiques des cirrus à l'aide d'un micro-lidar sur le site de Lille by : Rita Nohra

Download or read book Étude des propriétés macrophysiques et optiques des cirrus à l'aide d'un micro-lidar sur le site de Lille written by Rita Nohra and published by . This book was released on 2016 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Les nuages représentent l'une des principales sources d'incertitudes pour l'étude de l'évolution du climat (IPCC, 2013). Les cirrus constituent un groupe particulier de nuages, majoritairement composés de cristaux de glace, et ils recouvrent environ 30 % du globe terrestre. Leur haute altitude et la complexité de leurs compositions microphysiques rendent difficile la caractérisation de leurs propriétés. De manière générale, ils contribuent au bilan radiatif terrestre avec un effet d'albédo relativement faible et un effet de serre plus important, mais leur impact climatique reste difficile à quantifier. Il est donc indispensable d'étudier les cirrus et de connaître leurs propriétés afin de mieux quantifier leur forçage radiatif. Depuis 2006 le LOA possède une station d'observation atmosphérique équipée d'un micro-lidar à 532 nm. L'objectif de ce travail de thèse est d'étudier les nuages de glace en exploitant les mesures issues du micro-lidar sur le site d'observation de Lille. Nous avons développé un algorithme de détection et de caractérisation des cirrus à partir des mesures lidar sol. Sept années d'observations ont ensuite été traitées avec cet algorithme, ce qui a permis d'établir une climatologie des cirrus observés au-dessus de Lille. Ensuite nous avons appliqué cet algorithme aux données issues d'un micro-lidar sur le site de M'bour (Sénégal), afin de différencier les caractéristiques des cirrus observés sur les deux sites. Finalement, les résultats obtenus pour les sept ans de données sur le site de Lille ont été comparés aux données établies par le lidar CALIOP embarqué sur la plate-forme satellitaire CALIPSO, montrant un accord entre les deux résultats.

Star Testing Astronomical Telescopes

Author : Harold Richard Suiter
Publisher :
ISBN 13 : 9780943396903
Total Pages : 0 pages
Book Rating : 4.3/5 (969 download)

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Book Synopsis Star Testing Astronomical Telescopes by : Harold Richard Suiter

Download or read book Star Testing Astronomical Telescopes written by Harold Richard Suiter and published by . This book was released on 2008 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Ocean Optics

Author : Rochard W. Spinrad
Publisher : Oxford University Press
ISBN 13 : 0195361725
Total Pages : 302 pages
Book Rating : 4.1/5 (953 download)

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Book Synopsis Ocean Optics by : Rochard W. Spinrad

Download or read book Ocean Optics written by Rochard W. Spinrad and published by Oxford University Press. This book was released on 1994-01-06 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since the publication of Jerlov's classic volume on optical oceanography in 1968, the ability to predict or model the submarine light field, given measurements of the inherent optical properties of the ocean, has improved to the point that model fields are very close to measured fields. In the last three decades, remote sensing capabilities have fostered powerful models that can be inverted to estimate the inherent optical properties closely related to substances important for understanding global biological productivity, environmental quality, and most nearshore geophysical processes. This volume presents an eclectic blend of information on the theories, experiments, and instrumentation that now characterize the ways in which optical oceanography is studied. Through the course of this interdisciplinary work, the reader is led from the physical concepts of radiative transfer to the experimental techniques used in the lab and at sea, to process-oriented discussions of the biochemical mechanisms responsible for oceanic optical variability. The text will be of interest to researchers and students in physical and biological oceanography, biology, geophysics, limnology, atmospheric optics, and remote sensing of ocean and global climate change.

Light and Water

Author : Curtis D. Mobley
Publisher :
ISBN 13 :
Total Pages : 624 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Light and Water by : Curtis D. Mobley

Download or read book Light and Water written by Curtis D. Mobley and published by . This book was released on 1994 with total page 624 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume offers a treatment of radiative transfer theory in a format tailored to the specific needs of optical oceanography, with applications to real problems. It develops the basic theory and reviews the current literature. Numerical methods for solving radiative transfer equations are then detailed, with equations describing transpectral effects, internal surfaces, and surface effects. Equations governing the propagation of visible light across air-water surfaces and within water bodies are also explained.

Atmospheric Aerosols

Author : Guillaume A. D'Almeida
Publisher : A. Deepak Publishing
ISBN 13 :
Total Pages : 592 pages
Book Rating : 4.:/5 (318 download)

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Book Synopsis Atmospheric Aerosols by : Guillaume A. D'Almeida

Download or read book Atmospheric Aerosols written by Guillaume A. D'Almeida and published by A. Deepak Publishing. This book was released on 1991 with total page 592 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Photoacoustic and Photothermal Phenomena

Author : Peter Hess
Publisher : Springer
ISBN 13 : 9783662137048
Total Pages : 575 pages
Book Rating : 4.1/5 (37 download)

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Book Synopsis Photoacoustic and Photothermal Phenomena by : Peter Hess

Download or read book Photoacoustic and Photothermal Phenomena written by Peter Hess and published by Springer. This book was released on 2014-03-12 with total page 575 pages. Available in PDF, EPUB and Kindle. Book excerpt: photoacoustic and Photothermal Phenomena contains reviews and a large numberof selected contributed papers reporting progress in the application of new photoacoustic and photo- thermal techniques in physics, chemistry, biology, medicine and materials science. Theoretical and experimental work is presented on spectroscopy, kinetics and relaxation, trace analysis, mass and heat transport, surfaces and thin films, nondestructive evaluation,ultrasonics and semiconductors.

Satellite Soil Moisture Retrieval

Author : Prashant K. Srivastava
Publisher : Elsevier
ISBN 13 : 0128033894
Total Pages : 441 pages
Book Rating : 4.1/5 (28 download)

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Book Synopsis Satellite Soil Moisture Retrieval by : Prashant K. Srivastava

Download or read book Satellite Soil Moisture Retrieval written by Prashant K. Srivastava and published by Elsevier. This book was released on 2016-04-29 with total page 441 pages. Available in PDF, EPUB and Kindle. Book excerpt: Satellite Soil Moisture Retrieval: Techniques and Applications offers readers a better understanding of the scientific underpinnings, development, and application of soil moisture retrieval techniques and their applications for environmental modeling and management, bringing together a collection of recent developments and rigorous applications of soil moisture retrieval techniques from optical and infrared datasets, such as the universal triangle method, vegetation indices based approaches, empirical models, and microwave techniques, particularly by utilizing earth observation datasets such as IRS III, MODIS, Landsat7, Landsat8, SMOS, AMSR-e, AMSR2 and the upcoming SMAP. Through its coverage of a wide variety of soil moisture retrieval applications, including drought, flood, irrigation scheduling, weather forecasting, climate change, precipitation forecasting, and several others, this is the first book to promote synergistic and multidisciplinary activities among scientists and users working in the hydrometeorological sciences. - Demystifies soil moisture retrieval and prediction - Links soil moisture retrieval techniques with new satellite missions for earth and environmental science oriented problems - Written to be accessible to a wider range of professionals with a common interest in geo-spatial techniques, remote sensing, sustainable water resource development, and earth and environmental issues

Urban Remote Sensing

Author : Qihao Weng
Publisher : CRC Press
ISBN 13 : 1420008803
Total Pages : 450 pages
Book Rating : 4.4/5 (2 download)

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Book Synopsis Urban Remote Sensing by : Qihao Weng

Download or read book Urban Remote Sensing written by Qihao Weng and published by CRC Press. This book was released on 2018-10-08 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt: Driven by advances in technology and societal needs, the next frontier in remote sensing is urban areas. With the advent of high-resolution imagery and more capable techniques, the question has become "Now that we have the technology, how do we use it?" The need for a definitive resource that explores the technology of remote sensing and the issues it can resolve in an urban setting has never been more acute. Containing contributions from world renowned experts, Urban Remote Sensing provides a review of basic concepts, methodologies, and case studies. Each chapter demonstrates how to apply up-to-date techniques to the problems identified and how to analyze research results. Organized into five sections, this book: Focuses on data, sensors, and systems considerations as well as algorithms for urban feature extraction Analyzes urban landscapes in terms of composition and structure, especially using sub-pixel analysis techniques Presents methods for monitoring, analyzing, and modeling urban growth Illustrates various approaches to urban planning and socio-economic applications of urban remote sensing Assesses the progress made to date, identifies the existing problems and challenges, and demonstrates new developments and trends in urban remote sensing This book is ideal for upper division undergraduate and graduate students, however it can also serve as a reference for researchers or those individuals interested in the remote sensing of cities in academia, and governmental and commercial sectors. Urban Remote Sensing examines how to apply remote sensing technology to urban and suburban areas.

"All it Is, It's a Carnival"

Author : Mária Németh Lenke
Publisher :
ISBN 13 :
Total Pages : 164 pages
Book Rating : 4.F/5 ( download)

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Book Synopsis "All it Is, It's a Carnival" by : Mária Németh Lenke

Download or read book "All it Is, It's a Carnival" written by Mária Németh Lenke and published by . This book was released on 2007 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt:

The Polar Cusp

Author : J.A. Holtet
Publisher : Springer Science & Business Media
ISBN 13 : 9400952953
Total Pages : 427 pages
Book Rating : 4.4/5 (9 download)

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Book Synopsis The Polar Cusp by : J.A. Holtet

Download or read book The Polar Cusp written by J.A. Holtet and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 427 pages. Available in PDF, EPUB and Kindle. Book excerpt: These proceedings are based upon introductory talks, research reports and discussions from the NATO Advanced Workshop on the "Morphology and Dynamics of the Polar Cusp", held at Lillehammer, Norway, 7-12 May, 1984. The upper atmosphere at high latitudes is called the "Earth's win dow to outer space". Through various electrodynamic coupling process es as well as through direct transfer of particles many geophysical effects displayed there are direct manifestations of phenomena occurring in the deep space. The high latitude ionosphere will also exert a feedback on the regions of the magnetosphere and atmosphere to which it is coupled, acting as a momentum and energy source and sink, and a source of particles. Of particular interest are the sections of the near space known as the Polar Cusp. A vast portion of the earth's magnetic field envelope is electrically connected to these regions. This geometry results in a spatial mapping of the magnetospheric pro cesses and a focusing on to the ionosphere. In the Polar Cusps the solar wind plasma has also direct access to the upper atmosphere. The polar regions are thus of extreme importance when it comes to under standing the physical processes in the near space and their effect on our environment. The Introductory Talks given at this workshop provided a common background for discussing and understanding the physics of the Polar Cusp. By this book we will make the information which thus was provid ed to the participants of the workshop accessible to a wider audience.

Synthetic Aperture Radar Processing

Author : Giorgio Franceschetti
Publisher : CRC Press
ISBN 13 : 9780849378997
Total Pages : 326 pages
Book Rating : 4.3/5 (789 download)

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Book Synopsis Synthetic Aperture Radar Processing by : Giorgio Franceschetti

Download or read book Synthetic Aperture Radar Processing written by Giorgio Franceschetti and published by CRC Press. This book was released on 1999-03-30 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt: Synthetic Aperture Radar Processing simply and methodically presents principles and techniques of Synthetic Aperture Radar (SAR) image generation by analyzing its system transfer function. The text considers the full array of operation modes from strip to scan, emphasizes processing techniques, enabling the design of operational SAR codes. A simple example then follows. This book will be invaluable to all SAR scientists and engineers working in the field. It may be used as the basis for a course on SAR image generation or as a reference book on remote sensing. It contains a wide spectrum of information presented with clarity and rigor.

Principles of Ocean Physics

Author : John R. Apel
Publisher : Elsevier
ISBN 13 : 1483288056
Total Pages : 656 pages
Book Rating : 4.4/5 (832 download)

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Book Synopsis Principles of Ocean Physics by : John R. Apel

Download or read book Principles of Ocean Physics written by John R. Apel and published by Elsevier. This book was released on 2013-10-22 with total page 656 pages. Available in PDF, EPUB and Kindle. Book excerpt: In recent years, significant advances in both the theoretical and observational sides of physical oceanography have allowed the ocean's physical behavior to be described more quantitatively. This book discusses the physical mechanisms and processes of the sea, and will be valuable not only to oceanographers but also physicists, graduate students, and scientists working in dynamics or optics of the marine environment.