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seasonal variability

Biocrusts abundant in lichens grow on the soil surface in the Colorado Plateau.
Posted inNews

Climate Change Leads to Decline in Lichen Biocrusts

by Derek Smith 26 May 202226 May 2022

As summer temperatures continue to rise, important biocrust-forming organisms in the American Southwest may be lost.

The dark blue orb of Neptune is viewed by Voyager 2 at an upward angle from the south pole. A dark navy storm spot, the Great Dark Spot, is just to the right of the center of the planet, and white high-altitude clouds are scattered around the planet.
Posted inNews

Diagnosing Neptune’s Chilly Summer

by Kimberly M. S. Cartier 28 April 202228 April 2022

A pandemic project analyzing a trove of infrared images revealed an unexplained phenomenon taking place in Neptune’s atmosphere.

A wide view of snow-covered pines in mountains.
Posted inResearch Spotlights

Trees Wearing Accelerometers Help Track Snowstorms

by Rebecca Dzombak 15 April 202215 April 2022

This device allows scientists to measure how much snow is trapped in canopies and predict changes to snowpack—a critical factor in annual water availability.

An aerial image of the windswept surface of Mars. The ground is rusty red with blacker sediment curling across the image in the form of dunes. A dusting of white snow accentuates the ridges of large and small scale dunes.
Posted inNews

Mars’s Dust Cycle Controls Its Polar Vortex and Snowfall

by Kimberly M. S. Cartier 1 April 20221 April 2022

On Earth, the water cycle is a dominant climate force. On Mars, it’s the dust.

Posted inEditors' Highlights

What Caused the Open Habitat Transition in the West-Central U.S.?

by Susan Trumbore 10 March 202212 April 2022

Between 26-15 My ago, forests covering west-central North America gave way to open, grassy habitats. Now, oxygen isotope records suggest this shift is owed to drier winters and increased aridity.

A street in Philadelphia following a winter storm
Posted inResearch Spotlights

Road Salts Linked to High Sodium Levels in Tap Water

by Sarah Stanley 8 March 202210 May 2022

Use of deicing agents may sometimes raise sodium levels in drinking water beyond healthy limits for people on salt-restricted diets.

Image of marine snow, which is organic material sinking from upper waters to the deep ocean
Posted inResearch Spotlights

The Seasonality of Oceanic Carbon Cycling

by Sarah Derouin 3 March 20223 March 2022

Scientists uncovered how seasonal changes affect the amount and rate of carbon as it moves from the ocean’s surface to its depths.

Conceptual diagram illustrating the seasonal shifts in the relative importance of downstream flux verses emission losses across headwaters with different land-water interfaces in the boreal landscape (from top to bottom: forest, wetland, and lakes.
Posted inEditors' Highlights

Export of Different Carbon Types from a Boreal Catchment

by Ilja van Meerveld 2 December 202123 February 2022

Carbon export in boreal catchments depends on the landscape setting and differs for snowmelt and rainfall events.

Plot showing measured atmospheric dust concentrations on 24 buoy filters, aerosol optical depth, and precipitation for two buoys.
Posted inEditors' Highlights

Seasonality in Saharan Dust Across the Atlantic Ocean

by P. Yang 26 August 20212 February 2022

The first time series of bi-weekly dust concentrations measured in-situ across the remote Atlantic Ocean.

A close-up photograph of the eye of Hurricane Dorian.
Posted inNews

Your Summer Outlook: Cloudy with an Above-Normal Chance of Hurricanes

by Jenessa Duncombe 20 May 202128 April 2022

Get ready for another above-average hurricane season, but it likely won’t be as busy as last year.

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“Nationwide and Regional PM2.5-Related Air Quality Health Benefits from the Removal of Energy-Related Emissions in the United States”
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