Changes in Snow and Ice Storage-- Measurement and Simulation PDF Download

Author: Ludwig Nikolaus Braun
Publisher:
ISBN:
Category : Mass budget (Geophysics)
Languages : en
Pages : 11

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Author: Paul G. Constantine
Publisher: SIAM
ISBN: 1611973864
Category : Computers
Languages : en
Pages : 105

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Book Description
Scientists and engineers use computer simulations to study relationships between a model's input parameters and its outputs. However, thorough parameter studies are challenging, if not impossible, when the simulation is expensive and the model has several inputs. To enable studies in these instances, the engineer may attempt to reduce the dimension of the model's input parameter space. Active subspaces are an emerging set of dimension reduction tools that identify important directions in the parameter space. This book describes techniques for discovering a model's active subspace and proposes methods for exploiting the reduced dimension to enable otherwise infeasible parameter studies. Readers will find new ideas for dimension reduction, easy-to-implement algorithms, and several examples of active subspaces in action.

Author: Daqing Yang
Publisher: Springer Nature
ISBN: 3030509303
Category : Science
Languages : en
Pages : 914

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Book Description
This book provides a comprehensive, up-to-date assessment of the key terrestrial components of the Arctic system, i.e., its hydrology, permafrost, and ecology, drawing on the latest research results from across the circumpolar regions. The Arctic is an integrated system, the elements of which are closely linked by the atmosphere, ocean, and land. Using an integrated system approach, the book’s 30 chapters, written by a diverse team of leading scholars, carefully examine Arctic climate variability/change, large river hydrology, lakes and wetlands, snow cover and ice processes, permafrost characteristics, vegetation/landscape changes, and the future trajectory of Arctic system evolution. The discussions cover the fundamental features of and processes in the Arctic system, with a special focus on critical knowledge gaps, i.e., the interactions and feedbacks between water, permafrost, and ecosystem, such as snow pack and permafrost changes and their impacts on basin hydrology and ecology, river flow, geochemistry, and energy fluxes to the Arctic Ocean, and the structure and function of the Arctic ecosystem in response to past/future changes in climate, hydrology, and permafrost conditions. Given its scope, the book offers a valuable resource for researchers, graduate students, environmentalists, managers, and administrators who are concerned with the northern environment and resources.

Author:
Publisher:
ISBN:
Category : Atmospheric radiation
Languages : en
Pages : 428

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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 6

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Book Description
The current DOE-supported research program (Reduce Uncertainty in Future Sea-Level Change Due to Ice Wastage) addressed the question of how the refreezing of meltwater in cold snow affects sea-level changes in a future changing climate. The continuation of that research, proposed here, takes an additional new approach by focusing on processes which can be defined and characterized by measurements on regional scales. This new emphasis is intended to be directly applicable to a large-scale analysis from which runoff forecasts (and consequent sea level change) from the entire arctic region can be made. The research proposed here addresses the problem of forecasting future sea-level change due to greenhouse-induced changes in runoff from polar glaciers and ice caps. The objectives of this work are (1) to observe in the field the processes of infiltration and refreezing which lead to the formation of impermeable firn layers; (2) to reproduce these observed processes in the laboratory to confirm and further quantify their understanding; (3) to develop and calibrate a regional scale numerical model which can simulate these processes, based on measured parameters and driven by boundary conditions determined by climate; and (4) to apply this model to predict the development of impermeable firn (and consequent runoff and discharge to the ocean) in response to predicted future climate change.

Author:
Publisher:
ISBN:
Category : Cold regions
Languages : en
Pages : 368

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Author:
Publisher:
ISBN:
Category : Frozen ground
Languages : en
Pages : 240

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Book Description

Author: John A. Kelmelis
Publisher: DIANE Publishing
ISBN: 9780788102998
Category : Science
Languages : en
Pages : 140

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Book Description
The proceedings of an interdisciplinary meeting to review the diverse topics represented in global change research, held March 18-20, 1991, in Herndon, VA. Covers: climate, hydrology, precipitation, desert processes, energy, permafrost, & much more. Covers all aspects of the subject in over 100 presentations & poster sessions. Comprehensive!!

Author: Rodger Grayson
Publisher: CUP Archive
ISBN: 9780521633161
Category : Mathematics
Languages : en
Pages : 424

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Book Description
Describes use of observed patterns in understanding and modelling hydrological response, for researchers and graduate students.

Author: Tong Lee
Publisher: Frontiers Media SA
ISBN: 2889631206
Category : Science
Languages : en
Pages : 867

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Book Description
This eBook is a collection of articles from a Frontiers Research Topic. Frontiers Research Topics are very popular trademarks of the Frontiers Journals Series: they are collections of at least ten articles, all centered on a particular subject. With their unique mix of varied contributions from Original Research to Review Articles, Frontiers Research Topics unify the most influential researchers, the latest key findings and historical advances in a hot research area! Find out more on how to host your own Frontiers Research Topic or contribute to one as an author by contacting the Frontiers Editorial Office: frontiersin.org/about/contact.