Question

Describe the effect(s) of global warming on the rate of transpiration.

Answer 1

global warming potential of carbon dioxide (CO2), ahe global warming potential of carbon dioxide (CO2), a key greenhouse gas, is underestimated as climate change studies do not take into account the crucial fact that plants 'sweat' less when surrounded by more CO2, new research shows.

 

 

 

Higher CO2 levels make stomata, tiny pores on plant leaves, open less widely and lose less water through a process called ‘transpiration’ that cools the surrounding air.

 

Less transpiration means less cooling and this impacts global climate change models, the team from Indian Institute of Science (IISc), Bangalore; Carnegie Institution, and National Aeronautics and Space Administration Ames Research Centre reported last month (7 May) in the Proceedings of the NationalAcademy of Sciences.

 

Worldwide, plants lose an estimated 25 centimetres of water every year through transpiration. But this could reduce to 20 centimetres when CO2 levels are
 

The findings unsettle research findings and beliefs that plants reduce warming by photosynthesis since they add to warming by not losing enough water. The research also highlights the need to include plant biology in climate model studies, the scientists reported.

 
up to 65 per cent of total increased runoff caused by doubling CO2 levels, the team reported.

This increased run-off is particularly pronounced in the thickly-vegetated Amazon and Central and Southern Africa, the scientists reported. It also cuts the amount of moisture in the air by seven per cent over parts of Amazon and Central Africa

key greenhouse gas, is underestimated as climate change studies do not take into account the crucial fact that plants 'sweat' less when surrounded by more CO2, new research shows.

 

Climate modelling studies by a team from India and the thickly-vegetated Amazon and Central and Southern Africa, the scientists reported. It also cuts the amount of moisture in the air by seven per cent over parts of Amazon and Central Africa