Paleoclimatology

This two-volume book provides a comprehensive, detailed understanding of paleoclimatology beginning by describing the "proxy data" from which quantitative climate parameters are reconstructed and finally by developing a comprehensive Earth system model able to simulate past climates of the Earth. It compiles contributions from specialists in each field who each have an in-depth knowledge of their particular area of expertise. The first volume is devoted to "Finding, dating and interpreting the evidence". It describes the different geo-chronological technical methods used in paleoclimatology. Different fields of geosciences such as: stratigraphy, magnetism, dendrochronology, sedimentology, are drawn from and proxy reconstructions from ice sheets, terrestrial (speleothems, lakes, and vegetation) and oceanic data, are used to reconstruct the ancient climates of the Earth. The second volume, entitled "Investigation into ancient climates," focuses on building comprehensive models of past climate evolution. The chapters are based on understanding the processes driving the evolution of each component of the Earth system (atmosphere, ocean, ice). This volume provides both an analytical understanding of each component using a hierarchy of models (from conceptual to very sophisticated 3D general circulation models) and a synthetic approach incorporating all of these components to explore the evolution of the Earth as a global system. As a whole this book provides the reader with a complete view of data reconstruction and modeling of the climate of the Earth from deep time to present day with even an excursion to include impacts on future climate.

Auteur

Gilles Ramstein is a director of research at Laboratoire des Sciences du Climat et de l'Environnement (LSCE, France). His initial degree is in physics and since 1992 he has specialized in climate modeling.
He has been responsible for many French and European research projects on the Pleistocene, Cenozoic and Precambrian eras. He has also been the advisor of many PhD students who have explored and expanded the frontiers of paleoclimate modeling.
As a climate modeler, he studies very different climate contexts from Snowball Earth episodes (717-635 Ma) to more recent, and occasionally future, climate situations.The main research topics he focuses on are:

· Geological time from the Precambrian to the Cenozoic:

o Investigation of relationships between tectonics, the carbon cycle and the climate with an emphasis on the impact on the climate and the atmospheric CO2 cycle of major tectonic events such as plate movements, shrinkage of epicontinental seas, mountain range uplift and the opening/closing of seaways.

o Leading international collaborations on projects on monsoon evolutions and the dispersal of human ancestors during the Neogene periods.

· From the Pleistocene to future climate: in this framework, his major interests are interactions between orbital forcing factors, CO2 and climate. More specifically, his focus is on the response of the cryosphere, an important component of the climate system during these periods, with an emphasis on the development of the Greenland ice sheet at the Pliocene/Pleistocene boundary and abrupt climate changes driven by ice sheet variations.

He has also published several books and coedited the French version of Paleoclimatologie (CNRS Edition) and contributed to an online masters program devoted to educating journalists on climate change (Understanding the interactions between climate, environment and society ACCES). Amaëlle Landais is a research director at Laboratoire des Sciences du Climat et de l'Environnement (LSCE, France). Her initial degree is in physics and chemistry and, since her PhD in 2001, she has specialised in the study of ice cores.

She has been responsible for several French and European research projects on ice cores working on data acquisition both in the lab and in the field, interacting extensively with modelers. She has been the supervisor of 10 PhD students and is deeply committed to supporting and training students in laboratory work.

Her main research interests are the reconstruction of climate variability over the Quaternary and the links between climate and biogeochemical cycles. To improve our understanding of these areas , she develops geochemical tracers in ice cores (mainly isotopes), performs process studies using laboratory and field experiments s and analyses shallow and deep ice cores from polar regions (Greenland and Antarctica). T hrough numerous collaborations and improvement of ice core dating methods, she tries to establish connections with other paleoclimatic archives of the Quaternary.

Nathaelle Bouttes is a research scientist at the Laboratoire des sciences du climat et de l'environnement (LSCE/IPSL). Following the completion of her PhD in 2010 on the glacial carbon cycle, she went to the University of Reading (UK) for a 5-year postdoc on recent and future sea level changes. She then spent a year at Bordeaux (France) with a Marie Curie Fellowship on interglacials carbon cycle before joining the LSCE in 2016. Since then, she has specialized in understanding glacial-interglacial carbon cycle changes using numerical models and model-data comparison. She is mostly using and developing coupled carbon-climate models to understand past changes of the carbon cycle, in particular the evolution of the atmospheric CO2. She has been f...

Contenu

1. The climate system: its functioning and history.- 2. The changing face of the Earth throughout the ages.- 3. Introduction to geochronology.- 4. Carbon-14.