NASA | Scientists Link Earlier Melting Of Snow To Dark Aerosols

NASA scientists highlight the significant impact of aerosols on snow and climate in the northern hemisphere. Aerosols from wildfires and fossil fuels darken snow, increasing sunlight absorption and accelerating melting. This 'snow darkening effect' leads to earlier snowmelt and warmer temperatures. Researchers used climate models to study the impact of dust, black carbon, and organic carbon on snowpack, revealing reduced snow amounts and potential climate changes. The accumulation of aerosols alters atmospheric particles, potentially exacerbating climate change.

What is the primary effect of aerosols on snow-covered regions?

• They have no effect on snow.

• They increase snowfall.

• They cause the snow to melt faster.

• They make the snow more reflective.

What is the snow darkening effect?

• Snow melting slower due to increased reflectivity.

• Snow absorbing more sunlight due to darkening.

• Snow absorbing less sunlight due to aerosols.

• Snow becoming lighter and reflecting more sunlight.

Which types of aerosols were studied for their impact on snowpack?

• Methane, carbon dioxide, and water vapor.

• Lead, mercury, and arsenic.

• Sulfur dioxide, nitrogen oxides, and ozone.

• Dust, black carbon, and organic carbon.

How do darkened snow surfaces affect the surrounding environment?

• They have no impact on the environment.

• They increase the albedo effect.

• They cool down the environment.

• They warm up the environment by absorbing more sunlight.

What is a potential consequence of increased aerosols in the atmosphere?

• Decreased global temperatures.

• Increased snowpack in the northern hemisphere.

• Stabilization of the climate.

• Enhanced impact on Earth's climate.