10/25/23: An extreme ENSO in 2014-2016 sped up sea-level rise

An extreme El Nino event in 2014-2016 led to an extra 7 millimeters (about 0.3 inches) of sea-level rise, according to a new study in Geophysical Research Letters. Credit: hermansyah/unsplash

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Featured research

An extreme ENSO in 2014-2016 sped up sea-level rise
El Niño Southern Oscillation (ENSO) changes global weather patterns, including precipitation and land-based water storage. An extreme ENSO event from 2014-2016 led to an additional 7 millimeters (about 0.3 inches) of sea-level rise largely due to a drier Amazon Basin over that period, a new study finds. [Geophysical Research Letters research]

China will warm less than expected by the end of the century
China is expected to warm an average of 0.65 °C (about 1.2 °F) less than previously predicted by the end of the 21st century, a new study finds. The milder forecast reduces the impact of extreme heat on the nation’s population. [Geophysical Research Letters research]

The ethics of volcano geoengineering
Humans have tampered with volcanoes’ eruptions in the past, both intentionally and accidentally. In a new paper, scientists weigh the ethics and balance of what safety could be gained and what the risks of volcanic geoengineering could be. [Earth’s Future research]

Spraying sea salt into clouds to cool Earth’s temperature has mixed results
Scientists propose marine cloud brightening (MCB), which uses sea salt to make clouds more reflective, as an alternative to stratospheric aerosol injections because MCB’s impacts are more localized. Deploying MCB in one region can have unintended consequences in other regions of the world, but overall, the method reduces the risk of crossing many major climate tipping points, a new study finds. [Geophysical Research Letters research]

Machine learning highlights ways to improve flood mitigation
New research shows that home flood insurance coverage is often a reactive purchase in response to flooding, while top-down policies that focus on community resilience may offer more robust protection. [Earth’s Future research] [Eos editor’s highlight]

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