Despite a cold snap in February, low ice cover prevailed across the lakes in winter 2020-2021. In any given year, the formation, movement, and timing…
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Measuring snow might seem straightforward, but each environment brings unique challenges for instruments. For example, snowfall in forests gets caught in branches or falls underneath…
(Left) Predicted change of ocean surface temperature in 2050-2099 relative to 1950-1999 using an ensemble of climate models. (Right) Predicted change in amplitude of rainfall…
A potent arctic weather system chilled much of the United States with frigid weather in mid-February 2021, shattering low-temperature records in the middle of the…
As this winter’s polar vortex currently sends extreme icy blasts of Arctic weather to some parts of the northern hemisphere such as the northeast of…
Dark clouds, the smell of rain on a hot sidewalk, the flashes of intense light followed by a loud crackling and then a low, rolling…
NASA studies the Earth and how it’s changing from the ground, the sky, and space. Credit: NASA’s Goddard Space Flight Center Earth’s global average surface…
In mid-January 2021, the Pacific Northwest of North America was soaked by several episodes of heavy rainfall, leading to widespread flooding and landslides. In mid-January…
Credit: Contains modified Copernicus Sentinel data (2021), processed by ESA, CC BY-SA 3.0 IGO The heavy snowfall that hit Spain a few days ago still…
Credit: Contains modified Copernicus Sentinel data (2021), processed by ESA, CC BY-SA 3.0 IGO Captured by the Copernicus Sentinel-2 mission on January 11, 2021, at…
January 11, 2020 Meteorologists declared it the largest snowfall in the region since 1971. Between January 7–9, 2021, a moist, low-pressure weather system over the…
The stratospheric potential vorticity field on February 10, 2018. The Stratospheric Polar Vortex is about to split in two, and the weakening of the vortex…
MIT scientists have discovered a new mechanism by which aerosols may intensify thunderstorms in tropical regions. Researchers identify a mechanism by which small particles in…
These AIM images span Dec. 8–Dec. 19, 2020, starting with AIM’s first observations of the Antarctic noctilucent cloud season. The colors — from dark blue…
December 19 – 21, 2020 As winter moisture rolls in from the Pacific Ocean and makes snow on the Sierra Nevada range, it also can…
Though air and sea temperatures worldwide have been quite warm in 2020, the eastern and central Pacific Ocean recently grew milder with the return of…
Sea level rise scenarios have a 50% and 5% chance of exceedance in the mid-twenty-first century (panels a and b) and the late-twenty-first century (panels…
The active grid in the wind tunnel can stir up air flows to generate realistic storm turbulence. Credit: University of Oldenburg/Mohssen Assanimoghaddam Turbulence is an…
Evolution of Influenza-like epidemic. Credit: Paolo Bonfini, University of Crete Why do most viral epidemics spread cyclically in autumn and winter in the globe’s temperate…
November 16, 2020. (Click image for full view.) Less than two weeks after being hit by category 4 Hurricane Eta, several Central American countries braced…