Bibliothèque de L'IMIST/CNRST

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Climate data records from environmental satellites : interim report / par Satellites,, Committee on Climate Data Records from NOAA Operational. Publication : [S.l.] : National Academies Press, 2004 . 150 p. ; , The report outlines key elements to consider in designing a program to create climate-quality data from satellites. It examines historical attempts to create climate data records, provides advice on steps for generating, re-analyzing, and storing satellite climate data, and discusses the importance of partnering between agencies, academia, and industry. NOAA will use this report - the first in a two-part study - to draft an implementation plan for climate data records. 25 cm. Date : 2004 Disponibilité : Exemplaires disponibles: La bibliothèque des Sciences Exactes et Naturelles (1),

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Direct and indirect human contributions to terrestrial carbon fluxes : a workshop summary / par Johnson,, Rob Coppock and Stephanie. Publication : [S.l.] : National Academies Press, 2004 . 92 p. ; , Human-induced climate change is an important environmental issue worldwide, as scientific studies increasingly demonstrate that human activities are changing the Earth's climate. Even if dramatic reductions in emissions were made today, some human-induced changes are likely to persist beyond the 21st century. The Kyoto Protocol calls for emissions reporting that separates out management-induced changes in greenhouse gases from those changes caused by indirect human effects (e.g., carbon dioxide fertilization, nitrogen deposition, or precipitation changes), natural effects, and past practices on forested agricultural lands. This book summarizes a September 2003 workshop where leaders from academia, government and industry came together to discuss the current state of scientific understanding on quantifying direct human-induced change in terrestrial carbon stocks and related changes in greenhouse gas emissions and distinguishing these changes from those caused by indirect and natural effects. 23 cm. Date : 2004 Disponibilité : Exemplaires disponibles: La bibliothèque des lettres et sciences humaines et sociales (1),

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Improving the scientific foundation for atmosphere-land-ocean simulations : report of a workshop / par Models,, Committee on Challenges in Representing Physical Processes in Coupled Atmosphere-Land-Ocean. Publication : [S.l.] : National Academies Press, 2005 . 84 p. ; , The National Academies' Board on Atmospheric Sciences and Climate (BASC) held a workshop to explore and evaluate current efforts to model physical processes of coupled atmosphere-land-ocean (A-L-O) models. Numerical models of the atmosphere and ocean are central to weather prediction, research, and education. Although great strides have been made over the past few decades in understanding the atmosphere and ocean, modeling capabilities, and numerical A-L-O simulations, some unresolved processes in the models do not adequately represent knowledge of the underlying physics. Moreover, there is evidence that further progress in numerical simulations is being impeded by the slow pace of improvement in the representation of key physical processes in the models and the fact that geophysical flow models are not receiving the attention needed to make these tools more useful and accurate. These models often are used to predict future events, so it is imperative that their underlying physical processes be represented as robustly as possible. During the workshop, the parameterization of physical processes in A-L-O models was addressed, including associated errors, testing, and efforts to improve the use of parameterizations. Participants also examined intellectual and scientific challenges in modeling and highlighted the idea that some of the key impediments to progress in representing physical processes are primarily cultural in nature. 23 cm. Date : 2005 Disponibilité : Exemplaires disponibles: La bibliothèque des Sciences Exactes et Naturelles (1),

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Radiative forcing of climate change : expanding the concept and addressing uncertainties / par Climate,, Committee on Radiative Forcing Effects on. Publication : [S.l.] : National Academies Press, 2005 . 224 p. ; , Broché. 23 cm. Date : 2005 Disponibilité : Exemplaires disponibles: La bibliothèque des lettres et sciences humaines et sociales (1),

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Thinking strategically : the appropriate use of metrics for the climate change science program / par Research,, Committee on Metrics for Global Change. Publication : [S.l.] : National Academies Press, 2005 . 162 p. ; , The Climate Change Science Program (CCSP) and its predecessor U.S. Global Change Research Program have sponsored climate research and observations for nearly 15 years, yet, the overall progress of the program has not been measured systematically. Metrics - a system of measurement that includes the item being measured, the unit of measurement, and the value of the unit - offers a tool for measuring such progress; improving program performance; and demonstrating program successes to Congress, the Office of Management and Budget, and the public. This report lays out a framework for creating and implementing metrics for the CCSP. A general set of metrics provides a starting point for identifying the most important measures, and the principles provide guidance for refining the metrics and avoiding unintended consequences. 23 cm. Date : 2005 Disponibilité : Exemplaires disponibles: La bibliothèque des Sciences Exactes et Naturelles (1),

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