The Sun As A Variable Star Solar And Stellar Irradiance Variations

Author : Judit M. Pap,Claus Fröhlich,Hugh S. Hudson,W. Kent Tobiska
Publisher : Springer Science & Business Media
Page : 321 pages
File Size : 43,9 Mb
Release : 2012-12-06
Category : Science
ISBN : 9789401109505

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The Sun as a Variable Star: Solar and Stellar Irradiance Variations by Judit M. Pap,Claus Fröhlich,Hugh S. Hudson,W. Kent Tobiska Pdf

The IAU Colloquium No. 143 "The Sun as a Variable Star: Solar and Stellar Irradiance Variations" was held on June 20 - 25, 1993 at the Clarion Harvest House, Boulder, Colorado, USA. The main objective of this Colloquium was to review the most recent results on the observations, theoretical interpreta tions, and empirical and physical models of the variations observed in solar and stellar irradiances. A special emphasis of the Colloquium was to discuss the results gained on the climatic impact of solar irradiance variability. The study of changes in solar and stellar irradiances has been of high interest for a long time. Determining the absolute value of the luminosity of stars with different ages is a crucial question for the theory of stellar evolu tion and energy production of stellar interiors. Observations of the temporal changes of solar and stellar irradiances - in the entire spectral band and at different wavelengths - provide an additional tool for studying the physical processes below the photosphere and in the solar- stellar atmospheres. Since the Sun's radiative output is the main driver of the physical processes with in the Earth's atmosphere, the study of irradiance changes is an extremely important issue for climatic studies as well. Climatic models show that small, but persistent changes in solar irradiance may influence the Earth's climate.

Author : Anonim
Publisher : Unknown
Page : 355 pages
File Size : 40,9 Mb
Release : 1994
Category : Solar oscillations
ISBN : OCLC:30518000

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The Sun as a Variable Star by Anonim Pdf

Author : T. Roca Cortes,F. Sánchez,Francisco Sanchez
Publisher : Cambridge University Press
Page : 422 pages
File Size : 54,7 Mb
Release : 1996-08-28
Category : Science
ISBN : 0521563070

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The Structure of the Sun by T. Roca Cortes,F. Sánchez,Francisco Sanchez Pdf

The complex internal structure of the Sun can now be studied in detail through helioseismology and neutrino astronomy. The VI Canary Islands Winter School of Astrophysics was dedicated to examining these powerful new techniques. Based on this meeting, eight specially-written chapters by world-experts are presented in this timely volume. We are shown how the internal composition and dynamical structure of the Sun can be deduced through helioseismology; and how the central temperature can be determined from the flux of solar neutrinos. This volume provides an excellent introduction for graduate students and an up-to-date overview for researchers working on the Sun, neutrino astronomy and helio- and asteroseismology.

Author : Judit M. Pap,Claus Fröhlich,Roger K. Ulrich
Publisher : Springer Science & Business Media
Page : 509 pages
File Size : 43,7 Mb
Release : 2012-12-06
Category : Science
ISBN : 9789401150002

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Solar Electromagnetic Radiation Study for Solar Cycle 22 by Judit M. Pap,Claus Fröhlich,Roger K. Ulrich Pdf

Measurements of solar irradiance, both bolometric and at various wavelengths, over the last two decades have established conclusively that the solar energy flux varies on a wide range of time scales, from minutes to the 11-year solar cycle. The major question is how the solar variability influences the terrestrial climate. The Solar Electromagnetic Radiation Study for Solar Cycle 22 (SOLERS22) is an international research program operating under the auspices of the Solar-Terrestrial Energy Program (STEP) Working Group 1: `The Sun as a Source of Energy and Disturbances'. STEP is sponsored by the Scientific Committee of Solar-Terrestrial Physics (SCOSTEP) of the International Council of Scientific Unions (ICSU). The main goal of the SOLERS22 1996 Workshop was to bring the international research community together to review the most recent results obtained from observations, theoretical interpretation, empirical and physical models of the variations in the solar energy flux and their possible impact on climate studies. These questions are essential for researchers and graduate students in solar-terrestrial physics.

Author : Thomas Wenzler
Publisher : Cuvillier Verlag
Page : 225 pages
File Size : 50,8 Mb
Release : 2005
Category : Electronic
ISBN : 9783865376145

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Reconstruction of Solar Irradiance Variations in Cycles 21-23 Based on Surface Magnetic Fields by Thomas Wenzler Pdf

Author : Douglas V. Hoyt,Kenneth H. Schatten
Publisher : Oxford University Press
Page : 288 pages
File Size : 47,9 Mb
Release : 1997-04-03
Category : Science
ISBN : 9780195357486

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The Role of the Sun in Climate Change by Douglas V. Hoyt,Kenneth H. Schatten Pdf

The luminosity of the sun governs the temperatures of the planets. Yet the solar forcing, or driving, of climate, primarily due to changes in solar radiation, has never been well documented. Recent satellite measurements have shown that solar radiation varies as a function of time and wavelength, a concept that has been hypothesized for the past two centuries and has recently become a major topic with all the attention paid to global warming. This book reviews the physics of the concept of solar forcing, from its beginnings in the early 1800's and apparent success in the 1870's, to its near demise in the 1950's and recent resurgence. Since its emphasis is on solar variations as a driver for climate change, with only a brief discussion of other mechanisms, the book will be of most interest to students in climate studies.

Author : Elizabeth Nesme-Ribes
Publisher : Springer Science & Business Media
Page : 560 pages
File Size : 45,7 Mb
Release : 2013-06-29
Category : Science
ISBN : 9783642792571

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The Solar Engine and Its Influence on Terrestrial Atmosphere and Climate by Elizabeth Nesme-Ribes Pdf

The message of sunspots from the interior of the Sun to the Earth's climate When Galileo was summoned before the Inquisition on April 12, 1633, the main accusations laid against him concerned the doubts he expressed about Aristotle's theory of the universe. Aristotle's idea was that the Earth was the centre of the cosmos and that all of the stars, including the Sun, turned around it. Moreover, for Aristotle and the world of the Inquisitors, the Sun was a perfect celestial body. Now, Galileo had discovered spots on the Sun. These spots were seen as imperfections, and not just surface markings, but coming from within the Sun. Worse yet, they revolved around the Sun. All this supported the newfangled theory of Copernicus, and undermined a system of thought that had reigned supreme for centuries. Man of science that he was, and a prudent Catholic too, Galileo strived all his life to prove that Copernicus' astronomical concept was compatible with the word of the Bible. He proposed that there were not two truths but a single divine truth. It was just expressed in two different languages : there was the language of the common people, with its imprecision and inconsistencies, but intuitively understandable by everyone; and then there was the precise language of science with its strict regard for observation, which only a chosen few can grasp [L. Geymonat. 1992].

Author : Giuliana Cini Castagnoli,Antonello Provenzale
Publisher : IOS Press
Page : 528 pages
File Size : 51,9 Mb
Release : 1997
Category : Juvenile Nonfiction
ISBN : 9051993587

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Past and Present Variability of the Solar-terrestrial System by Giuliana Cini Castagnoli,Antonello Provenzale Pdf

The global climate of the Earth has significantly varied over the last millennia. On a regional scale, the climate has varied and does presently vary on many different time scales, leading to a continuously changing pattern of temperatures, humidity, precipitation, with important effects on the whole terrestrial biosphere. Physicist are interested in understanding the mechanism at work by gathering data and properly analysing them, by building theoretical models and, if possible, making predictions on the future evolution of the system. Along these lines, an important question is to understand the role of the solar forcing, in order to unravel the internal mechanisms of variability of the Earth's climate from the variable forcing of the Sun. On the other hand, one can learn about the past solar variability by reading into the terrestrial archives that provide us with proxy data on the history of both the Sun and the climate. Thus, realizing that the Sun and the Earth form a closely coupled system, where the variable properties of the former may affect in many subtle ways the behaviour of the latter, is an important step toward the understanding of both.This book is explicitly devoted to these issues. First, it is important to obtain reliable data from terrestrial archives, and to properly date the records that have been measured. The first part of the book is devoted to these crucial aspects, dealing with various types of proxy data and with the difficult issue of the dating of the records. Once obtained, the data has to be interpreted. This process nowadays relies upon a plethora of data analysis methods that explicitly take into account the nonlinear nature of the system and try to elucidate the dynamics and the main processes active in the measured system. The second part of the book is devoted to the issue of data analysis and prediction. Finally, once the data has been interpreted and analyzed, theoretical models have to be built describing the dynamics of the system considered. Due to the extreme complexity of the Sun/Earth system (as well as of its components, the Sun itself and the Earth's climate), drastic simplifications in the modelling efforts have to be accepted and one has to bear in mind that the models probably are nothing more than a pale image of the real dynamics. The third part of the book is devoted to the theoretical and numerical modelling of the solar and climatic variability, and of their complex interactions. This volume gives an up-to-date view of the present state of this field.

Author : Joanna Dorothy Haigh,Michael Lockwood,Mark S. Giampapa
Publisher : Springer Science & Business Media
Page : 436 pages
File Size : 47,5 Mb
Release : 2006-03-30
Category : Science
ISBN : 9783540275107

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The Sun, Solar Analogs and the Climate by Joanna Dorothy Haigh,Michael Lockwood,Mark S. Giampapa Pdf

The 34th Saas-Fee advanced course of the Swiss Society of Astronomy and Astrophysics (SSAA) took place from March 15 to 20, 2004, in Davos, on the subject of The Sun, Solar Analogs and the Climate. PresentlytheSwissmountainresortofDavosisprobablymostwellknown for hosting an event on globalization. However, it is because Davos also happens to be the seat of the Physikalisch-Meteorologisches Observatorium Davos and World Radiation Center, that this course on a “global” subject was hosted here. Exceptionally, the topic of this course was not purely astrophysical, but themembersoftheSSAAdecidedtosupportitallthesameduetothetimely topic of global warming and its possible link to solar variations. In these times of concern about global warming, it is important to und- stand solar variability and its interaction with the atmosphere. Only in this way can we distinguish between the solar and anthropogenic contributions to the rising temperatures. Therefore, this course addressed the observed va- ability of the Sun and the present understanding of the variability’s origin and its impact on the Earth’s climate. Comparing the solar variability with that of solar analog stars leads to a better understanding of the solar activity cycle and magnetic activity in general, and helps us to estimate how large the solar variations could be on longer time scales. Inspiteofthefantasticweatherandsnowconditionswhichreignedduring this week, the participants assiduously took part in the lectures. This is proof ofthehighqualityofthelecturesthatthethreespeakers,JoannaHaigh,Mike Lockwood and David Soderblom, delivered. We deeply thank them for their contributions and e?orts and hope that the readers will enjoy the book as much as we enjoyed their lectures.

Author : Philip Douglas Jones,Raymond Stephen Bradley,Jean Jouzel
Publisher : Springer Science & Business Media
Page : 641 pages
File Size : 53,9 Mb
Release : 2013-06-29
Category : Science
ISBN : 9783642611131

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Climatic Variations and Forcing Mechanisms of the Last 2000 Years by Philip Douglas Jones,Raymond Stephen Bradley,Jean Jouzel Pdf

A profound knowledge of the past climate is vital for our understanding of global warming. The past 2000 years are both the period which is of most relevance to the next century and that for which there is the most evidence. High-resolution proxy records for this period are available from a variety of sources. Five sections consider dendroclimatology, ice cores, corals, historical records, lake varves, and other indicators. The final two sections cover the histories of various forcing factors and attempt to bring together records from a variety of sources and provide explanations.

Author : Kanaris Tsinganos
Publisher : Springer Science & Business Media
Page : 770 pages
File Size : 42,9 Mb
Release : 2012-12-06
Category : Science
ISBN : 9789400902657

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Solar and Astrophysical Magnetohydrodynamic Flows by Kanaris Tsinganos Pdf

Modern observations, including recent ones with the Hubble Space Telescope, have revealed that the Universe is replete with plasma outflows from all kinds of objects, ranging from stars in all their variety to galaxies. In this masterly survey of plasma astrophysics, written by leading practitioners, the first 15 articles in Part I deal with the use of the MHD approach in several key problems of solar plasma, such as magnetoconvection and magnetic field generation, sunspots and coronal loops, magnetic nonequilibrium and coronal heating, coronal mass ejections, the acceleration of the solar wind, and stellar winds across the Main Sequence. The following 16 articles of Part II deal with the use of the same MHD approach in several central and puzzling aspects of more distant astrophysical plasmas, such as the dynamics of the interstellar medium, collimated outflows from young stellar objects and accretion disks, molecular outflows and jets associated with enigmatic binaries and symbiotic stars, relativistic flows associated with superluminal microquasars in our own galaxy, astrophysical jets from nearby galaxies, or remote active galactic nuclei and quasars, probably fuelled by supermassive black holes. The emphasis throughout is on the striking underlying similarities in the physics of all these problems. Audience: Indispensable for solar physicists and astrophysics alike. An ideal textbook for graduate students in physics and astrophysics.

Author : Jacqueline Bergeron
Publisher : Springer Science & Business Media
Page : 603 pages
File Size : 49,9 Mb
Release : 2012-12-06
Category : Science
ISBN : 9789401111003

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Reports on Astronomy by Jacqueline Bergeron Pdf

IAU Transactions are published as a volume corresponding to each General Assembly. Volume A is produced prior to the Assembly and contains Reports on Astronomy, prepared by each Commission President. The intention is to summarize the astronomical results that have affected the work of the Commission since the production of the previous Reports up to a time which is about one year prior to the General Assembly. Volume B is produced after the Assembly and contains accounts of Commission Meetings which were held, together with other material. The reports included in the present volume range from outline summaries to lengthy compilations and references. Most reports are in English.

Author : Jean-Pierre Rozelot
Publisher : Springer Science & Business Media
Page : 222 pages
File Size : 54,6 Mb
Release : 2003-04-09
Category : Science
ISBN : 9783540441885

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The Sun’s Surface and Subsurface by Jean-Pierre Rozelot Pdf

Composed of a set of lectures and tutorial reviews, this book stems from a summer school devoted to the gravitational aspects of the sun and their geophysical consequences. Contribitions elaborate on the gravitational distortions of the sun which can be used to gain some knowledge of the sun's interior and surface phenomena but which also influences the sun's irradience and thus ultimately the earth's climate. Last but not least, it is shown that these small distortions constitute a formidable challenge to solar astrometry, and the final part of the book describes the observational difficulties in defining unequivocally the solar diameter.

Author : Antonio Marquina
Publisher : Springer Science & Business Media
Page : 381 pages
File Size : 50,9 Mb
Release : 2012-12-06
Category : Social Science
ISBN : 9789400709737

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Environmental Challenges in the Mediterranean 2000–2050 by Antonio Marquina Pdf

This book addresses six key factors that will affect environmental policies in the Mediterranean region during the next fifty years: population growth, climate change, soil erosion and desertification, water scarcity, food production, and urbanization and pollution. The authors assess these as potential sources of violent conflict. The interdisciplinary approach makes this a relevant and useful reference for a broad range of professionals, specialists and researchers.

Author : Y. Calisesi,R.-M. Bonnet,L. Gray,J. Langen,M. Lockwood
Publisher : Springer Science & Business Media
Page : 465 pages
File Size : 49,7 Mb
Release : 2007-10-11
Category : Science
ISBN : 9780387483412

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Solar Variability and Planetary Climates by Y. Calisesi,R.-M. Bonnet,L. Gray,J. Langen,M. Lockwood Pdf

This book provides an updated overview of the processes determining the influence of solar forcing on climate. It discusses in particular the most recent developments regarding the role of aerosols in the climate system and the new insights that could be gained from the investigation of terrestrial climate analogues. The book’s structure mirrors that of the ISSI workshop held in Bern in June 2005.