Global Biogeochemical Cycles Archives - Page 8 of 9

New measurements help researchers assess methane emitted by wetlands

What’s the Average Methane Isotope Signature in Arctic Wetlands?

by Terri Cook 4 May 20173 March 2023

Aircraft measurements confirm that methane emissions from northern European wetlands exhibit a uniform regional carbon isotopic signature, despite considerable ground-level heterogeneity.

Sparse vegetation grows in special areas of the frosty soils in Komi Republic, in northwestern Russia.

Research Spotlights

High Arctic Emissions of a Strong Greenhouse Gas

by Sarah Stanley 6 April 201711 August 2022

Isotope data bring scientists one step closer to revealing the microbial processes behind nitrous oxide emission in the tundra.

Researchers examine what amount of a river’s nutrient supply reaches the ocean.

Research Spotlights

What Proportion of River Nutrients Reaches the Open Sea?

by Terri Cook 22 February 201724 February 2023

Results of the first geographically based estimates of river nutrient supply indicate that 75% of dissolved nitrogen and 80% of phosphorus reach the open ocean.

Algae in the Great Calcite Belt may play an important role in fluctuating atmospheric carbon levels.

Research Spotlights

Tiny Creatures Form Massive, Bright Ring Around Antarctica

by Sarah Stanley 26 January 201727 September 2022

Dense algae populations in the Great Calcite Belt could cause carbon dioxide release from the ocean into the atmosphere.

Scientists examine the link between forest fires and deforestation in the Amazon.

Research Spotlights

Smoke Signals in the Amazon

by A. Branscombe 5 January 201731 March 2023

Forest fires can occur naturally, but in the world's largest rain forest, fire can signal large-scale deforestation.

Cows may be a reason for increases in atmospheric methane

Research Spotlights

Using Isotope Fingerprints to Solve a Methane Mystery

by Kate Wheeling 16 December 201625 October 2021

Atmospheric methane levels are rising, and isotopic ratios within the greenhouse gas suggest that the tropics may be to blame.

A wet climate in Minnesota led to more methane production zones in peatlands.

Research Spotlights

A Wetter Climate Increases Methane Production in Peat

by E. Jacobsen 16 November 20162 November 2021

As northern Minnesota's climate got wetter, precipitation drove mobile forms of young carbon deeper into peatlands, doubling the size of methane-producing strata.

Understanding how the ocean absorbs carbon dioxide will help scientists to improve climate change modeling.

Research Spotlights

Can We Predict the Future of Ocean Carbon Dioxide Uptake?

by S. Hall 18 October 201615 November 2021

A new understanding of uncertainties in climate change models allows scientists to decide which source to tackle first in order to better forecast our planet's changing climate.