Climate & Environment

Climate & Environment

147 bookmarks
Custom sorting
Projected changes in persistent extreme summer weather events: The role of quasi-resonant amplification
Projected changes in persistent extreme summer weather events: The role of quasi-resonant amplification
Persistent episodes of extreme weather in the Northern Hemisphere summer have been associated with high-amplitude quasi-stationary atmospheric Rossby waves, with zonal wave numbers 6 to 8 resulting from the phenomenon of quasi-resonant amplification (QRA). A fingerprint for the occurrence of QRA can be defined in terms of the zonally averaged surface temperature field. Examining state-of-the-art [Coupled Model Intercomparison Project Phase 5 (CMIP5)] climate model projections, we find that QRA events are likely to increase by ~50% this century under business-as-usual carbon emissions, but there is considerable variation among climate models. Some predict a near tripling of QRA events by the end of the century, while others predict a potential decrease. Models with amplified Arctic warming yield the most pronounced increase in QRA events. The projections are strongly dependent on assumptions regarding the nature of changes in radiative forcing associated with anthropogenic aerosols over the next century. One implication of our findings is that a reduction in midlatitude aerosol loading could actually lead to Arctic de-amplification this century, ameliorating potential increases in persistent extreme weather events.
Projected changes in persistent extreme summer weather events: The role of quasi-resonant amplification
Expanding American Sign Language's scientific vocabulary
Expanding American Sign Language's scientific vocabulary
A lack of signs for many scientific terms impedes deaf people's entry into the sciences. Deaf scientists want to chip away at the barriers by developing more ASL signs for scientific terms.
Expanding American Sign Language's scientific vocabulary
Wildlife, air quality at risk as Great Salt Lake nears low
Wildlife, air quality at risk as Great Salt Lake nears low
SALT LAKE CITY (AP) — The silvery blue waters of the Great Salt Lake sprawl across the Utah desert, having covered an area nearly the size of Delaware for much of history. For years, though, the largest natural lake west of the Mississippi River has been shrinking.
Wildlife, air quality at risk as Great Salt Lake nears low
African city lights, Earth's atmospheric glow and star trails
African city lights, Earth's atmospheric glow and star trails
iss065e083929 (June 1, 2021) --- This long exposure photograph, taken from the International Space Station as it orbited 262 miles above the Democratic Republic of Congo, reveals city lights on the African continent, Earth's atmospheric glow and star trails.
African city lights, Earth's atmospheric glow and star trails
The Evolution of the Heart (A Love Story)
The Evolution of the Heart (A Love Story)
Thanks to Google's Science Journal app for supporting PBS. Learn more at https://g.co/sciencejournalPBS Member Stations rely on viewers like you. To support ...
The Evolution of the Heart (A Love Story)