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Eos

Science News by AGU

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Eco-hydrology

Side view of individual trees generated in a lidar image
Posted inNews

The Bigger They Are, the Harder They Fall

by Richard J. Sima 18 October 201920 November 2019

New research tracking 1.8 million trees found that tall trees died at more than twice the rate of smaller ones toward the end of extreme and persistent drought.

Lupines bloom in Illilouette Creek Basin in Yosemite National Park.
Posted inResearch Spotlights

Restoring Natural Fire Regimes Can Yield More Water Downstream

by Terri Cook 22 July 2019

Research in Yosemite National Park offers a new benchmark for understanding water balance changes in a mountainous basin 4 decades after its natural wildfire regime was reestablished.

A stream flowing down a valley
Posted inResearch Spotlights

Modeling River Boulders to Improve Hydropower Sustainability

by Aaron Sidder 30 April 2019

Large stones in streams provide crucial habitat for fish. Modeling the boulders and streamflow offers fresh insights into how water engineering projects alter aquatic habitats.

Twilight in the Tapajós National Forest, seen from an observation tower
Posted inResearch Spotlights

A Simplified Model of Water Vapor Exchange in the Amazon

by Aaron Sidder 27 March 2019

Evapotranspiration is the exchange of water vapor between land and the atmosphere, and it is hard to measure and model. A new study shows promise for its estimation over large, vegetated landscapes.

A satellite image of urban sprawl in Shanghai
Posted inResearch Spotlights

The Urban Dry Island Effect

by E. Underwood 28 February 2019

A study of the Yangtze River Delta shows how urbanization dries out the atmosphere.

Vegetation dynamics in Amazonia
Posted inEditors' Highlights

Seasonal Leaf Production Is Key Control on Amazon Carbon Balance

by G. Vourlitis 12 July 2018

Characterizing leaf phenology in process-based models reconciles both “dry season green-up” and drought controls on Amazonian carbon balance.

Researchers examine how mesquite trees move water between soil layers
Posted inResearch Spotlights

How Mesquite Trees Gain a Competitive Edge in Arid Arizona

by Aaron Sidder 6 July 2018

A new study shows that mesquites employ hydraulic redistribution to move water between soil layers in the savannas of Santa Rita.

Researchers use satellite data to analyze leaf water content
Posted inResearch Spotlights

Scientists Probe Water Inside Leaves via Satellite

by S. Witman 2 January 20185 January 2018

Improving satellite-based studies of vegetation optical depth, a critical ecosystem indicator.

Researchers examine how mossy oaks filter carbon when it rains.
Posted inResearch Spotlights

Mossy Oaks Are Dripping with Organic Matter

by E. Underwood 27 December 2017

Epiphyte-bearing trees leach carbon when it rains.

A new study reevaluates a theory behind the mysterious “fairy rings” that vegetation can form in certain environments
Posted inResearch Spotlights

Mysterious "Fairy Circles" Continue to Enchant Scientists

by S. Witman 5 April 2017

Researchers revisit an old theory about the ethereal patterns of vegetation that form in some arid landscapes.

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From AGU Journals

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Geophysical Research Letters
“Climate Change Drives Widespread and Rapid Thermokarst Development in Very Cold Permafrost in the Canadian High Arctic”
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“Vegetation modeled as a water cloud”
By E. P. W. Attema,  Fawwaz T. Ulaby

HOT ARTICLE
Geophysical Research Letters
“Numerical Simulation of Atmospheric Lamb Waves Generated by the 2022 Hunga-Tonga Volcanic Eruption”
By Angel Amores et al.

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