WikiVisually
The entire wiki reimagined as a visual magazine with video discovery · Watch your interests come alive
WikiVisually
The entire wiki reimagined as a visual magazine with video discovery · Watch your interests come alive
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Global dimming
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Global dimming is a decline in the amount of sunlight reaching the Earth's surface. It is caused by atmospheric particulate matter, predominantly sulfate aerosols, which are components of air pollutio
The observed trends of global dimming and brightening in four major geographic regions. The dimming was greater on the average cloud-free days (red li
The observed trends of global dimming and brightening in four major geographic regions. The dimming was greater on the average cloud-free days (red line) than on the average of all days (purple line), strongly suggesting that sulfate aerosols were the cause.
If smoke from wildfires mixes into clouds, it darkens them, decreasing their albedo. If there are no clouds, then smoke can increase albedo, particula
If smoke from wildfires mixes into clouds, it darkens them, decreasing their albedo. If there are no clouds, then smoke can increase albedo, particularly over oceans.
Sun-blocking aerosols around the world steadily declined (red line) since the 1991 eruption of Mount Pinatubo, according to satellite estimates.
Sun-blocking aerosols around the world steadily declined (red line) since the 1991 eruption of Mount Pinatubo, according to satellite estimates.
Satellite photo showing a thick pall of smoke and haze from forest fires in Eastern China. Such smoke is full of black carbon, which contributes to di
Satellite photo showing a thick pall of smoke and haze from forest fires in Eastern China. Such smoke is full of black carbon, which contributes to dimming trends but has an overall warming effect.
Particulate matter
Videos
Particulate matter or particulates are microscopic particles of solid or liquid matter suspended in the air. The combination of particulates and air is called an aerosol. Sources of particulate matter
PM2.5 and PM10 compared with a human hair in a graphic from the Environmental Protection Agency
PM2.5 and PM10 compared with a human hair in a graphic from the Environmental Protection Agency
Excavator (a type of heavy equipment commonly used at construction sites and roadworks) demolishing the remnants of the pre-war Postal Train 0880Stati
Excavator (a type of heavy equipment commonly used at construction sites and roadworks) demolishing the remnants of the pre-war Postal Train 0880Station (Dworzec Pocztowy) at Jerozolimskie Avenue, Poland
Horizon and layers of the atmosphere as seen from NASA Earth Observatory: troposphere (darkest), tropopause (brown), stratosphere (gray), mesosphere,
Horizon and layers of the atmosphere as seen from NASA Earth Observatory: troposphere (darkest), tropopause (brown), stratosphere (gray), mesosphere, thermosphere, and exosphere (blues). Colors are due to the dominant gases and particles in each layer.
Air pollution measurement station in Emden, Germany
Air pollution measurement station in Emden, Germany