Current Affairs

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Page-26 of Archives: May, 2011

Global dimming

The gradual reduction in the amount of global direct irradiance at the Earth’s surface is called Global dimming. It is believed that it has been caused by the...

May 22, 2011

Dead Zones

The Low oxygen areas in the world’s oceans or large lakes where no aquatic life is supported are known as Dead Zones. So, the Dead Zones are formed...

May 22, 2011

Oxygen minimum zone

Oxygen minimum zone (OMZ) , also known as shadow zone is the zone in Oceans where the oxygen saturation is at its lowest. This refers to depths of...

May 22, 2011

Carbon Footprint

The Carbon Footprint is a comprehensive measure of the total amount of greenhouse gases (GHGs)—primarily carbon dioxide (CO₂), methane (CH₄), nitrous oxide (N₂O), and fluorinated gases—emitted directly and...

May 22, 2011

Climate Feedback and Polar amplification

Climate models generally predict amplified warming in Polar Regions due to climate feedbacks. This is called Polar amplification. This can be understood by the fact that due to...

May 22, 2011

Climate Change

Climate change refers to significant and lasting alterations in the statistical distribution of weather patterns over periods ranging from decades to millions of years. It encompasses changes in...

May 22, 2011

Anti-greenhouse effect

Many planetary bodies show the Green House Effect. In our solar System, Mars and Venus show the Green House Effect, but Titan, the largest planet of Saturn and...

May 22, 2011

Green House Effect

In the Green House Effect, the thermal radiation from a planetary surface is absorbed by atmospheric greenhouse gases, and is re-radiated. Due to this, the temperature of the...

May 22, 2011

Greenhouse Gases (GHGs)

Greenhouse gases are gaseous constituents of the atmosphere, both natural and anthropogenic, that absorb and emit radiation at specific wavelengths within the spectrum of thermal infrared radiation emitted...

May 22, 2011

Acid Rain Program

Acid Rain Program came into being after the 1990 Clean Air Act, which is a United States federal law enacted by the United States Congress to control air...

May 22, 2011

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