‘Water scarcity’ affects four billion people each year

Figure: Global map charts locations that use more water than is available in at least one month each year. Mesfin Mekonnen and Arjen Hoekstra at the University of Twente in the Netherlands have created maps that show global water scarcity on a monthly timescale. They identify areas, where more water is withdrawn than the region can … More ‘Water scarcity’ affects four billion people each year

Impact of Reservoirs on Contemporary and Future Hydrology of the Northeastern United States

Construction of dams and the resulting water impoundments are one of the most common engineering procedures implemented on river systems. One major problem in dams’ impact studies is the lack of reliable methods for simulating reservoir operation. We have used Artificial Neural Networks to parameterize actual dam operations and developed a General Reservoir Operation Scheme … More Impact of Reservoirs on Contemporary and Future Hydrology of the Northeastern United States

Insights into the Ongoing California Drought

“The state of California has experienced the worst meteorological drought in its historical record during 2012-2015. The adverse effects of this multi-year event have been far from uniformly distributed across the region, ranging from remarkably mild in most of California’s densely-populated coastal cities to very severe in more rural, agricultural, and wildfire-prone regions. This duality … More Insights into the Ongoing California Drought

Explaining Extreme Events of 2014 from a Climate Perspective – Bulletin of the American Meteorological Society

Figure: Location and types of events analyzed in this publication. Herring, S. C., M. P. Hoerling, J. P. Kossin, T. C. Peterson, and P. A. Stott, Eds., 2015: Explaining Extreme Events of 2014 from a Climate Perspective. Bull. Amer. Meteor. Soc., 96 (12), S1–S172. CONTENTS 1. Introduction to Explaining Extreme Events of 2014 from a … More Explaining Extreme Events of 2014 from a Climate Perspective – Bulletin of the American Meteorological Society

Spring plant phenology and false springs in the conterminous US during the 21st century

Highlights Spring onset will occur earlier throughout the conterminous US by the year 2100. Projections of earlier spring onset indicate that recent historical trends may continue, but not everywhere. The averaging of many models canceled out the effects of the simulated internal variability and emphasized the role of greenhouse-forced climate change. Future changes in false … More Spring plant phenology and false springs in the conterminous US during the 21st century

U.S. Winter Outlook: Strong El Niño sets the stage. NOAA Climate Prediction Center – Seasonal Outlook

Strong El Niño conditions remain in place across the equatorial Pacific Ocean as represented by both ocean and atmospheric data. The ongoing El Niño event is expected to peak in strength in late autumn or early winter with seasonal average sea surface temperature (SST) anomalies in the Nino 3.4 region near or exceeding +2.0 degrees … More U.S. Winter Outlook: Strong El Niño sets the stage. NOAA Climate Prediction Center – Seasonal Outlook

Hydrologic issues associated with nuclear waste repositories

A schematic of the hydrologic issues related to the disposal at Yucca Mountain. Abstract Significant progress in hydrology, especially in subsurface flow and solute transport, has been made over the last 35 years because of sustained interest in underground nuclear waste repositories. The present paper provides an overview of the key hydrologic issues involved, and … More Hydrologic issues associated with nuclear waste repositories

Increased threat of tropical cyclones and coastal flooding to New York City during the anthropogenic era

“The flood risk for New York City due to tropical cyclones and their resultant storm surges has increased significantly during the last millennium. Mean flood heights increased by >1.2 m from ∼A.D. 850 to A.D. 2005 due to rising relative sea levels. Additionally, there were increases in the types of tropical cyclones that produce the … More Increased threat of tropical cyclones and coastal flooding to New York City during the anthropogenic era

What scale for water governance?

Recently Science presented essays invited to debate key issues in freshwater research and management. Here the debate is about “when, and to what extent, should a global viewpoint replace, or work in tandem with, enduring localized perspectives?” Local perspectives on water “A global perspective on water management predominates in high-level policy discussions. This has the … More What scale for water governance?