Last edited by Mikar
Monday, August 3, 2020 | History

6 edition of Long-Term Climatic Variations found in the catalog.

Long-Term Climatic Variations

Data and Modelling (Nato a S I Series Series I, Global Environmental Change)

by Jean-Claude Duplessy

  • 228 Want to read
  • 16 Currently reading

Published by Springer .
Written in English


Edition Notes

ContributionsMarie-Therese Spyridakis (Editor)
The Physical Object
Number of Pages567
ID Numbers
Open LibraryOL7447538M
ISBN 10038758112X
ISBN 109780387581125

Climate change, the periodic modification of Earth’s climate caused by changes in the atmosphere and interactions between the atmosphere and various other geologic, chemical, biological, and geographic factors. Learn how climate has changed since the last ice age and throughout longer stretches of . The orbit of the Solar System about the centre of the Galaxy has been considered as a possible external climate forcing mechanism. During the course of a galactic year (now estimated at million years), variations in the interstellar medium may influence the amount of solar radiation incident at the Earth’s surface, thus acting as a radiative forcing mechanism to induce climate change.

  When the Sevilleta began, many thought that biotic transitions in the Southwest would be strongly driven by interannual variation in climate, particularly in response to ENSO events. However, long-term research at the Sevilleta demonstrates that this original ENSO hypothesis is not correct.   The third long-term variation in Earth’s orbit that Milutin examined was the shape of Earth’s elliptical orbit around the sun. During this yearly orbit around the sun, the Earth is closest to the sun at the perihelion (which occurs around January 4th), and furthest from the sun at the aphelion (which occurs around July 5th).

Moreover, long term star formation activity in the Milky Way correlate with long term climate variations. In a more recent work with Andreas Prokoph and Ján Veizer, [13] it was argued that the reconstructed temperature has a clear 32 million year oscillation that is consistent with the solar system's motion perpendicular to the galactic plane. Changes in climate and habitat on the breeding and non-breeding grounds of migratory birds are both playing an important part in driving their long-term population changes.


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Long-Term Climatic Variations by Jean-Claude Duplessy Download PDF EPUB FB2

The first of three parts is devoted to the climatic system and the physical basis for its modelling; the second summarizes the evolution of the global atmosphere, the ocean, the continents, the biosphere, and the ice sheets during recent climatic cycles; the last part focusses on the understanding of past and future climatic changes.

[1] In this work, the authors analyze the observed long‐term variations of seasonal climate in China and then investigate the possible influence of increases in greenhouse gas concentrations on these variations by comparing the observations with the simulations of the second phase of the Coupled Model Intercomparison Project (CMIP2).

The long‐term variations of precipitation and Cited by: Get this from a library. Long-term climatic variations: data and modelling. [J Cl Duplessy; Marie-Thérèse Spyridakis;] -- Climate is the most important component of the Earth's environment and climatic fluctuations have a strong impact on water supplies, vegetation, energy use etc.

Thus our understanding of the climatic. ISBN: X X OCLC Number: Notes: "Proceedings of the NATO Advanced Study Institute on Long-Term Climatic Variations--Data and Modelling, held at Siena, Italy, September Octo "--Title page verso. 2 Natural Climatic Variations.

What is the range of natural variability in climate. Climate is continually varying on time scales ranging from seasons to the lifetime of Earth.

Natural climate changes can take place on short time scales as a result of the rapid alterations to forcings (as described in section 1). Long-Term Climate Monitoring by the Global Climate Observing System International Meeting of Experts, Asheville, North Carolina, USA. Editors: Karl, Thomas R.

(Ed.) Free Preview. An ice age is a long period of reduction in the temperature of the Earth's surface and atmosphere, resulting in the presence or expansion of continental and polar ice sheets and alpine 's climate alternates between ice ages and greenhouse periods, during which there are no glaciers on the is currently in the Quaternary glaciation, known in popular terminology as the.

Volcanic activity is an important natural cause of climate variations because tracer constituents of volcanic origin impact the atmospheric chemical composition and optical properties. Volcanic eruptions force all elements of the climate system, producing long-term climate signals in ocean. But these systems were not designed to measure climate variations and, as a result, changes and variations of the earth system during the instrumental climate record is far from unequivocal.

This book develops a framework from which a Global Climate Observing System, currently being discussed in international forums, can be implemented to. 1 day ago  Reliable seasonal prediction of groundwater levels is not always possible when the quality and the amount of available on-site groundwater data are limited.

In the present work, a hybrid K-Nearest Neighbor-Random Forest (KNN-RF) is used for the prediction of variations in groundwater levels (L) of an aquifer with the groundwater relatively close to the surface (<10 m) is proposed.

First. Raymond S. Bradley, in Paleoclimatology (Third Edition), Solar Forcing. Orbital forcing involves the redistribution of incoming solar energy, both latitudinally and seasonally. Thus, there are differential effects on the climate system that can lead to circulation changes, and there may be different responses to the forcing in the Northern and Southern Hemispheres.

Climate change - Climate change - The last great cooling: The Earth system has undergone a general cooling trend for the past 50 million years, culminating in the development of permanent ice sheets in the Northern Hemisphere about million years ago.

These ice sheets expanded and contracted in a regular rhythm, with each glacial maximum separated from adjacent ones by 41, years (based. A top-level climate scientist shows why the predictions of climate models are not reliable for dictating public action and energy policy despite being useful for weather and climate research.

This. To answer the question: Long -Term Climate Change: What Is A Reasonable Sample Size. the answer is fairly simple. For a reasonable degree of certainty (90%?) One needs around 10x the length of time of data of the length of time in which we are taking a trend – and all the data must be from one homogeneous source.

1 day ago  While natural long-term climate fluctuations contribute to the observed trends, these variations alone cannot explain the extent to which expansion has already occurred. This means, the authors argue, that climate change might have already significantly contributed to tropical expansion, especially in the ocean-dominated Southern Hemisphere.

Long-term climate variations and solar effects of the nonlinear response of the armosphere-ocean system to the global influence of the long-term solar irradiance variations.

Book. Jan. Figure Short-term trends in global temperature (blue lines show temperature trends at five-year intervals from to ) can range from decreases to sharp increases. The evidence of climate change is based on long-term trends over years or more (red line).

(Data from NOAA NCDC). In humid and sub‐humid climate zones, variation in precipitation and lagged EVI accounted for 16% to 69% and 5% to 72% of total variance in EVI anomalies across regions and seasons in crop‐livestock systems and rangeland‐based systems, respectively (Fig.

S1). Lagged short‐term vegetation greenness anomalies explain a smaller proportion. Long-term climate variations in China and global warming signals Article (PDF Available) in Journal of Geophysical Research Atmospheres (19) October with Reads.

In an analysis of the past million years, UC Santa Barbara geologist Lorraine Lisiecki discovered a pattern that connects the regular changes of the Earth's orbital cycle to changes in the. While natural long-term climate fluctuations contribute to the observed trends, these variations alone cannot explain the extent to which expansion has already occurred.Cycles also play key roles in Earth’s short-term weather and long-term climate.

A century ago, Serbian scientist Milutin Milankovitch hypothesized the long-term, collective effects of changes in Earth’s position relative to the Sun are a strong driver of Earth’s long-term climate, and are responsible for triggering the beginning and end.Climate variability includes all the variations in the climate that last longer than individual weather events, whereas the term climate change only refers to those variations that persist for a longer period of time, typically decades or more.

In the time since the industrial revolution the climate has increasingly been affected by human activities that are causing global warming and climate.