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Global Biogeochemical Cycles

Visit the journal.

Researchers uncover uncertainty in soil carbon estimates
Posted inResearch Spotlights

Major Uncertainty in Estimates of Carbon Trapped in Soil

by E. Underwood 22 March 201812 January 2023

A new study reveals discrepancies between global databases and field measurements.

The physical properties of peatland burn sites affect the amount of greenhouse gases that end up in the atmosphere
Posted inResearch Spotlights

Measuring Emissions from Smoldering Peat Fires

Alexandra Branscombe by A. Branscombe 1 February 20182 November 2021

A new study measures emission factors for tropical peatland fires in Malaysia.

Posted inResearch Spotlights

Accounting for the Missing Silica in the Marine Sediment Cycle

by Terri Cook 16 January 201828 January 2022

Cosmogenic silicon-based estimates of the amount of biogenic silica stored in clays along continental margins could explain the large discrepancy in the nutrient’s global marine budget.

Posted inEditors' Vox

Thirty Years of GBC in a Changing World

by Susan Trumbore 6 December 20171 November 2021

The outgoing Editor in Chief of Global Biogeochemical Cycles reflects on how research topics published in the journal have adapted and developed since its launch three decades ago.

Researchers put an old model to the test with new data to examine methane dynamics in wetland
Posted inResearch Spotlights

A New Model Yields a Better Picture of Methane Fluxes

Elizabeth Thompson by Elizabeth Thompson 27 November 20172 November 2021

Scientists update an old model with recent findings, allowing for a more accurate understanding of methane dynamics in wetlands.

Looking toward Tahiti from Tetiaroa.
Posted inResearch Spotlights

Oceans May Produce Twice as Much Organic Matter as Usually Measured

by S. Witman 20 November 20177 July 2022

Researchers study how oceans respire carbon, reexamining a critical part of the global carbon cycle.

Posted inResearch Spotlights

New Evidence Challenges Prevailing Views on Marine Carbon Flux

Sarah Stanley, Science Writer by Sarah Stanley 23 August 201722 October 2021

Small, slow-sinking organic particles may play a bigger role than previously thought in the transport of carbon below the surface ocean.

climate change globe arctic
Posted inResearch Spotlights

New Baseline for Understanding Arctic Oxygen and Nutrient Fluxes

by Terri Cook 11 August 201727 September 2022

Significant spatial and temporal patterns emerge from the first pan-Arctic comparison of oxygen demand in marine sediments.

Streams and rivers play an important role in the exchange of carbon dioxide between terrestrial ecosystems, atmosphere, and ocean.
Posted inResearch Spotlights

Why Is There So Much Carbon Dioxide in Rivers?

by S. Witman 19 May 20176 March 2023

Observations of carbon dioxide oversaturation in the freshwater of the world led scientists to study its underlying causes at more than 100 field locations across the nation.

New measurements help researchers assess methane emitted by wetlands
Posted inResearch Spotlights

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.

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