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Biosphere/atmosphere interactions

Deciduous forests, like the one pictured here, are important sinks of ozone.
Posted inResearch Spotlights

Examining the Intricacies of Ozone Removal by Deciduous Forests

by Aaron Sidder 9 August 20215 October 2021

A new study looks into how air movement in the atmospheric boundary layer affects ozone removal by deciduous forests, which are a significant ozone sink.

Two maps of North America showing patterns of CO2 uptake by photosynthesis during the growing season based on two different models of atmospheric CO2 variations.
Posted inEditors' Highlights

How Do Croplands Reduce CO2 During the Growing Season?

by Susan Trumbore 20 May 202128 September 2021

Regional variations in the seasonal drawdown of atmospheric CO2 can be used as a benchmark for evaluating models and satellite-derived estimates of land carbon uptake.

Four researchers study and take notes on leaves in a forest on the Tibetan Plateau in China.
Posted inNews

Early Sprouting of Leaves Enhances Northern Hemisphere Warming

by Tim Hornyak 18 March 202019 March 2020

As leaf out has been advancing 4–5 days per decade, scientists say the effect of vegetation on climate remains poorly understood.

El glaciar Zongo, visto en enero de 2010, se encuentra en Huayna Potosí, a unos 25 kilómetros al norte de la capital de Bolivia, La Paz.
Posted inNews

Los Incendios del Amazonas Contribuyen al Derretimiento de los Glaciares Andinos

by Michael Allen 25 February 2020

Investigaciones recientes revelan que las emisiones de carbono negro producidas por los incendios en el Amazonas causan que los glaciares en los Andes absorban más radiación solar y se derritan más.

Spatial cluster analysis of carbon uptake in Mexico
Posted inEditors' Highlights

Stocking a Proper Buffet for a Megadiverse Smorgasbord

by Ankur R. Desai 19 July 201916 July 2019

Mexico’s megadiverse biota challenge observation network design for efficient sampling, but novel methods can provide guidance and tests of representativeness.

Pyrenees in Catalonia Spain
Posted inNews

Microbes Rain Down from Above, to the Tune of the Seasons

by Jenessa Duncombe 8 January 201928 September 2021

Every time snow or rain falls, it brings with it microbes from high in the atmosphere. Could those microbes have a seasonal signal, just like the plants on the land below?

Ecologist Maria Uriarte of Columbia University records damage that Hurricane Maria did to trees in Puerto Rico
Posted inNews

Congress Throws Tropical Forest Research Program a Lifeline

by G. Popkin 5 October 2018

Climate researchers and ecologists laud the continuation of effort to fuse data from tropical forests with modeling.

The Suisun Marsh, the largest tidal marsh in the San Francisco Estuary (California).
Posted inResearch Spotlights

Budgeting Ozone-Depleting Emissions from Coastal Tidal Marshes

by Aaron Sidder 6 September 20186 September 2018

Brackish wetlands and their salt-tolerant vegetation are significant methyl halide emitters. The natural emissions add chlorine and bromine to the stratosphere, which break down ozone.

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.

Posted inEditors' Highlights

What Will Redwood Trees Do Without Foggy Days?

by Ankur R. Desai 5 February 2018

Coastal California fog—a key source of water for the iconic redwood tree—has declined by a third. Can a trace gas, carbonyl sulfide, be used to assess the effect on plant productivity?

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Features from AGU Journals

RESEARCH SPOTLIGHTS
JGR: Solid Earth
“New Tectonic Plate Model Could Improve Earthquake Risk Assessment”
By Morgan Rehnberg

EDITORS' HIGHLIGHTS
AGU Advances
“Eminently Complex – Climate Science and the 2021 Nobel Prize”
By Ana Barros

EDITORS' VOX
Perspectives of Earth and Space Scientists
“New Directions for Perspectives of Earth and Space Scientists”
By Michael Wysession


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