QUESTION

Easy

Science & Technology

Prelims 2019

In the context of which of the following do some scientists suggest the use of cirrus cloud thinning technique and the injection of sulphate aerosols into the stratosphere?

Select an option to attempt

Explanation

  • Cirrus clouds do not reflect a lot of solar radiation into space. As they form at high altitudes and cold temperatures, they trap long-wave radiation and have a climate impact similar to greenhouse gases. Thus, thinning cirrus clouds would reduce the absorption of infrared radiation and are proposed as a form of climate engineering to reduce global warming.
Cirrus Cloud Thinning

Cirrus Cloud Thinning

  • Another proposed Geo-engineering technique involves injecting reflective sulphate aerosol particles into Earth's lower stratosphere to cast a small proportion of the inbound sunlight back into space and cool the planet off.

Thus, both are climate engineering/ Geo-engineering techniques to reduce global warming.

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