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Susan Trumbore

A schematic of the coupled ocean-ice model of rift propagation presented in the paper.
Posted inEditors' Highlights

Speed of Ice Shelf Rifting Controlled by Ocean-Ice Interactions

by Susan Trumbore 4 March 20244 March 2024

Scientists report the fastest rate of rift extension yet observed for an Antarctic floating ice shelf and explain why it is far slower than rates expected for brittle ice deformation.

Schematic illustrating the model applied in this study.
Posted inEditors' Highlights

New Constraints on Sulfur Cycling in the Prebiotic Earth

by Susan Trumbore 12 January 20248 January 2024

Experiments constraining rates of aqueous reactions and photolysis coupled with a global model constrain the abundance and chemical speciation of sulfur in early Earth’s atmosphere and oceans.

Diagram showing nitrogen transformations.
Posted inEditors' Highlights

Reporting Model Results Even When They Cannot (Yet) be Tested

by Susan Trumbore 7 November 20233 November 2023

Models simulating the nitrogen cycle track its multiple chemical forms but tend to report a subset that can be compared with available field measurements.

Graph from the paper.
Posted inEditors' Highlights

Barnacles Help Reconstruct Drift Path of Malaysia Airlines Flight MH370

by Susan Trumbore 28 August 202329 August 2023

Careful calibration of isotopes in a barnacle shell growing on ocean debris – in this case an airplane part – informs a new forensic method to identify its most probable drift path.

Three global maps using color to indicate different data.
Posted inEditors' Highlights

A Multidecadal View of Oceanic Storage of Anthropogenic Carbon

by Susan Trumbore 17 August 202315 August 2023

A decline in the ratio of ocean carbon accumulation to atmospheric carbon dioxide growth between 1994-2004 and 2004-2014 suggests a reduction in the sensitivity of the ocean carbon sink.

Photo of the surface of Jupiter’s icy moon, Europa.
Posted inEditors' Highlights

Rotation of Europa’s Icy Shell Driven by Deep Ocean Currents

by Susan Trumbore 18 May 202317 May 2023

A model using currents in the deep ocean to drive rotation of Europa’s ice shell from below can explain why its surface may drift despite being tidally locked.

Diagram of the carbon cycling in Subglacial Lake Mercer.
Posted inEditors' Highlights

Clues from a Subglacial Lake for Holocene Grounding Line Change

by Susan Trumbore 2 May 20231 May 2023

Organic carbon sampled in the lake contained radiocarbon, indicating connection to the ocean in the mid-Holocene, when the grounding line was up to 260 kilometers inland of its current position.

Posted inEditors' Highlights

How Can We Sample More Ethically?

by Susan Trumbore 9 January 20239 January 2023

Ryan-Davis and Scalice describe a path towards sampling more ethically, going beyond legal permitting requirements to engagement of Indigenous expertise and respect of peoples’ relationship to place.

Posted inEditors' Highlights

A Drier or Wetter Future for Southwestern North America?

by Susan Trumbore 31 December 202217 February 2023

Bhattacharya et al. present evidence that expansion of the North American Monsoon explains a wetter southwest in the mid-Pliocene and suggest this mechanism can explain current monsoon variations.

Posted inEditors' Highlights

Origin of Dawnside Subauroral Plasma Flows in Geomagnetic Storms

by Susan Trumbore 12 September 202218 October 2022

Geomagnetic storms induce fast plasma flows next to the aurora and affect space weather. Lin et al. explain the origin of a special “dawnside” plasma stream that occurs only during extreme storm events.

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Seasonal Iron Cycle and Production in the Subantarctic Southern Ocean

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Keeping Soil Healthy: Why It Matters and How Science Can Help

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