GEOLOGY

EARTH SCIENCE

CLIMATE AND ENVIRONMENTAL CHANGE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of these global warming mitigation strategies would be classified as geoengineering?
A
Planting large numbers of trees to absorb carbon dioxide
B
Switching all beef cattle to grasses instead of corn to reduce methane production
C
Injecting sulfates and particulates into the atmosphere, partially blocking some sunlight
D
Setting legal limits for the amount of carbon dioxide that can be released by a single facility
Explanation: 

Detailed explanation-1: -Three proactive strategies could reduce the risks of climate change: 1) mitigation: reducing emissions; 2) adaptation: moderating climate impacts by increasing our capacity to cope with them; and 3) geoengineering: deliberately manipulating physical, chemical, or biological aspects of the Earth system2.

Detailed explanation-2: -Geoengineering approaches include Natural Climate Solutions (e.g., Ecosystem Restoration, Blue Carbon, etc.) Solar Radiation Management, Carbon Dioxide Removal and a diverse array of Climate Change mitigation and adaptation methodologies.

Detailed explanation-3: -There are several proposed solar geoengineering technologies. These include marine cloud brightening, cirrus cloud thinning, space-based techniques, and stratospheric aerosol scattering, amongst others. Marine cloud brightening would attempt to brighten marine clouds to reflect more sunlight back into space.

There is 1 question to complete.