News

How a Passion for Weather Turned Sonya Legg into an “Accidental Oceanographer”
March 24, 2021

AOS Faculty Member Sonya Legg is a physical oceanographer working in the Ocean and Cryosphere Division at NOAA's Geophysical Fluid Dynamics Laboratory (GFDL) through CIMES. Her research focuses on small-scale…

Projections of Tropical Heat Stress Constrained by Atmospheric Dynamics
March 11, 2021
Congratulations to AOS Graduate Student Yi Zhang, whose paper published online March 8 in Nature Geoscience has been…
High End of Climate Sensitivity in New Climate Models Seen as Less Plausible
March 3, 2021

A recent analysis of the latest generation of climate models — known as a CMIP6 — provides a cautionary tale on interpreting climate simulations as scientists develop more sensitive and sophisticated projections of how the Earth will respond to increasing levels of carbon dioxide in the atmosphere.

The researchers, led by AOS Graduate…

Introducing the new Editor in Chief of JAMES Stephen Griffies
March 2, 2021

AOS Faculty Member Stephen Griffies, a GFDL senior scientist, is the new editor-in-chief at the AGU journal JAMES, effective January 1, 2021. 

Eos Announcement

Assessing the Influence of COVID-19 on Earth’s Radiative Balance
Feb. 22, 2021

The ongoing COVID-19 pandemic led to a worldwide reduction in aerosol emissions. Anecdotal effects on air quality and visibility were widely reported. Less known are the impacts on the planetary energy balance, and by extension, on weather and climate. By separating the impacts from meteorology and emissions with model simulations, the authors,…

Adherence to Health Precautions, Not Climate, the Biggest Factor Driving Wintertime COVID-19 Outbreaks
Feb. 9, 2021

Wintertime outbreaks of COVID-19 have been largely driven by whether people adhere to control measures such as mask wearing and social distancing, according to a study by Princeton researchers. Climate and a lack of population immunity are playing smaller roles…

Mixing by Oceanic Lee Waves
Jan. 12, 2021

A newly-published review by AOS Faculty Member Sonya Legg, associate director of CIMES, summarizes current theory and observations of lee wave generation and mixing driven by lee wave breaking, distinguishing between steady and tidally oscillating forcing. The existing…

Three Regimes of Temperature Change Over Dry Land, Moist Land, and Oceanic Surfaces
Jan. 11, 2021

Previous studies report that extreme temperature events will occur more often and become more extreme in the future, yet there is no consensus on how much this increased likelihood of extreme heat events is due to a shift of temperature distribution mean or a changed temperature distribution shape. In a recent paper, led by AOS postdoc Suqin…

Increasing Risk of Another Cape Town’s Day Zero Drought in Twenty-First Century
Dec. 23, 2020

The Cape Town “Day Zero” drought was caused by an exceptional 3-year rainfall deficit. Combined with management practices and infrastructure shortcomings, the drought caused one of the most serious water crises ever experienced in any heavily populated metropolitan area, with extensive economic impacts.  Through the use of a higher-resolution…

The GFDL Global Atmospheric Chemistry-Climate Model AM4.1: Model Description and Simulation Characteristics
Dec. 16, 2020

The atmospheric model documented in this study, AM4.1, marks the culmination of GFDL’s 4th-generation model development effort that included comprehensive revisions of atmospheric dynamics, physics, and chemistry, and biogeochemical coupling to land…