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Groundwater Recharge and Flow - Approaches and Challenges for Monitoring and Modeling Using Remotely Sensed Data: Proceedings of a Workshop (Paperback)
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Groundwater Recharge and Flow - Approaches and Challenges for Monitoring and Modeling Using Remotely Sensed Data: Proceedings of a Workshop (Paperback)
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Water of appropriate quantity and quality is essential for
drinking, sanitation, and food, energy, and industrial production
for any society and is derived for most needs from surface- or
groundwater sources. Studies suggest that groundwater use in
irrigation globally is increasing in total volume as well as a
percentage of all water used for irrigation, with the demand for
groundwater resources increasing as available primary surface water
supplies are depleted. Particularly in arid regions, groundwater
may be the most accessible water supply for any purpose, leaving
groundwater withdrawals concentrated in areas that are already
experiencing water stress. Even in the presence of direct ground
observations and measurements of the water table, quantitative
evaluation of groundwater storage, flow, or recharge at different
scales requires remotely sensed data and observations applied to
groundwater models. Resolving the interaction of groundwater
storage, flow, and recharge at a scale at which basins are managed
requires remotely sensed data and proxy data. In June 2019, the
Water Science and Technology Board of the National Academies of
Sciences, Engineering, and Medicine convened a workshop to identify
scientific and technological research frontiers in monitoring and
modeling groundwater recharge and flow in various regions of the
world. The goals of the workshop were to assess regional freshwater
budgets under major use scenarios, including agriculture, industry,
and municipal; examine state of the art research frontiers in
characterizing groundwater aquifers, including residence time,
quantity, flow, depletion, and recharge, using remotely sensed
observations and proxy data; discuss groundwater model
uncertainties and methods for mitigating them using sparse ground
observations or data and other approaches; and consider our ability
to detect which water management strategies that affect groundwater
flow and recharge are being used and any changes in their use over
time. This publication summarizes workshop presentations and
plenary discussions. Table of Contents Front Matter 1 Overview 2
Regional Freshwater Budgets Under Major Use Scenarios 3 Research
Frontiers in Characterizing Groundwater Aquifers 4 Mitigating
Groundwater Model Uncertainties 5 Changes in Water Management
Strategies Over Time 6 Final Thoughts References Appendix A:
Statement of Task Appendix B: Planning Committee Biosketches
Appendix C: Workshop Agenda Appendix D: Workshop Participants
Appendix E: Speaker Abstracts
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