Quantitative observation-based estimates highlight the contribution of diapycnal mixing to the Atlantic Meridional Overturning Circulation, water mass formation, and tracer transfers and pathways.
Editors’ Highlights
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Delta Degradation Leads to Exacerbated Greenhouse Gas Emissions
Seismic ship surveys and seabed elevation maps of the Yangtze subaqueous delta reveal how the reduction of sediment supply to the coastal ocean can trigger increased greenhouse gas emissions.
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Radar Satellites Capture Subtle Slip Evolution on Faults
A five-year time series from radar satellite imagery tracks surface slip on major faults in the San Francisco Bay Area, capturing subtle velocity variations and controlling factors.
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Updated Reference Standard for Total Solar Irradiance
Version 2 of the Total and Spectral Solar Irradiance Sensor-1 Hybrid Solar Reference Spectrum captures a spectral resolution spanning 0.115-200 micrometers and integrates nearly 100% of the TSI energy.
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4D Viscosity Constraints from Greenland
The mantle’s resistance to flow appears different for glacial and plate tectonic timescales but this behavior can be reconciled with new thermo-mechanical models of the asthenosphere.
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Taking Trash into Their Own Hands—Community Science to Policy
Community effort to systematically count and categorize trash in the Pinole watershed led to the prioritization of locations and trash types that informed recommendations for local government policy.
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Scotland’s Last Glaciers Cause a Shift in an Old Paradigm
Cosmogenic geochronology of Scotland’s vanished glaciers indicates that the paradigm of weakened North Atlantic currents causing a rapid regional cooling is no longer valid.
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Remote Sensors See NO2 ‘Hot Spots’ from Offshore Oil Activity
Satellites can see NO2 pollution from space, but can they detect individual oil and natural gas operations, and are the measurements accurate?
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Tracking Heavy Metal Accumulation in the Nile Delta
Sediment measurements show that flow alterations and discharges are driving increasing concentrations of multiple heavy metals in the Nile Delta, threatening ecosystems, agriculture, and human health.
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Suivie de l’accumulation des métaux lourds dans le Delta du Nil
Les analyses de sédiments montrent que la réutilisation de l’eau non traitée et la construction de barrages entraînent l’augmentation des concentrations de métaux lourds dans le Delta du Nil, menaçant gravement les écosystèmes, l’agriculture et la santé humaine.