Investigadores descubren cómo el carbono negro evoluciona de partículas hidrofóbicas a sitios de nucleación de nubes, removiendo eventualmente las partículas que absorben calor del cielo.
Sarah Derouin
Sarah Derouin is a freelance science journalist and editor who has been writing for Eos since 2017. She has a doctorate in geology from the University of Cincinnati and is a graduate of the Science Communication Program at University of California, Santa Cruz. Sarah has written for New Scientist, Scientific American, Popular Mechanics, Science, EARTH Magazine, and Mongabay. She was the 2018–19 Science Communication Fellow for the Geological Society of America and attended Congressional Climate Science Days. Beyond writing, Sarah was an acting associate editor for EARTH Magazine. She also worked behind the scenes as an assistant producer on Big Picture Science radio show, broadcast on more than 140 public radio stations. You can find more of her work at www.sarahderouin.com or connect with her on Twitter @Sarah_Derouin.
Posted inResearch & Developments
2 + 2 = 5
The ebb and flow of carbon within Earth’s systems are complex and ever-moving occurrences. Carbon is a nomadic element, traveling between the atmosphere, ocean, and the soil, rock, and ice of the planet, changing forms along the way. Much of this cycling takes place in the ocean, partially through a biological carbon pump (BCP). In the BCP, atmospheric carbon is fixed through phytoplankton growing at the surface of the sea. When the phytoplankton dies, carbon particles sink from the surface to deep ocean waters. This carbon can remain for hundreds or even thousands of years before returning to the atmosphere.
The researchers used a global ocean biogeochemical model to see how the amount of carbon particles reaching the deep ocean would change with variations in seasonality. In particular, they looked at how both the pattern and the strength of the seasonality would affect the sinking speed of carbon particles and their attenuation throughout the water column.
Posted inResearch Spotlights
Hydrothermal Microbes Can Be Green Energy Producers
In ultramafic, reducing environments, forming microbial proteins can actually release energy.
Posted inResearch Spotlights
Faults in Oceanic Crust Contribute to Slow Seismic Waves
New high-sampling rate measurements of fluid pressures in oceanic crust reveal unresolved fractures and pathways for fluid flow.
Posted inResearch Spotlights
Unearthing the Cause of Slow Seismic Waves in Subduction Zones
Researchers look to the fossil rock record to unearth the driving forces for variable seismic speed through subduction zones.
Posted inResearch Spotlights
River Ice Can Shape Watershed Ecology
As river ice cover decreases, the physical and biological changes to river ecosystems vary with the watershed characteristics and river size.
Posted inResearch Spotlights
Researchers Zero In on Methane Released from Reservoirs
Using new methods, researchers can estimate how much methane is released each day from reservoirs—an important step in estimating global methane emissions.
Posted inResearch Spotlights
How Long Do Black Carbon Particles Linger in the Atmosphere?
Researchers uncover how black carbon evolves from hydrophobic particles to cloud nucleation sites, eventually removing the heat-absorbing particles from the sky.