NASA study says that tropical region of the earth is going to witness increased amount of rainfall as our planet continues to warm.
As per the study led by Hui Su, a scientist from NASA Propulsion Laboratory, mostly global climate prototypes underestimate decrease in high clouds over the tropical region.
He further added that rainfall cannot be predicted alone by clouds that are available to make rain. It also depends on earth’s energy budget, a calculation of inward energy from the sun compared to outward heat energy.
The tropical clouds at high altitude capture heat in the environment. This tropical atmosphere will cool down in case there are fewer of these clouds in future.
The data of the recent decade tells that tropical atmosphere is likely to form high clouds in comparison to surface warming.
Further, it will increase the amount of tropical rainfall that will warm the air and balance the cooling from the high cloud shrinkage.
Rainfall warming is something odd; humans are used to seeing that the rain is cooling the atmospheric air over the earth. However, several miles high away from our planet a different process exists.
On our planet, when water evaporates into vapor and reaches the outer atmosphere, it carries the heat energy causing evaporation. Further, these water vapors change into liquid droplets due to the cold atmosphere at high altitude. They release the heat and that heats the tropical atmosphere.
NASA conducted further studies on the past three decades’ data and found that most of the climate models underestimated the increased precipitation that occurred in recent decades.
The recent climate models showed a greater degree of precipitation than its older models.
This study will surely enhance the prediction of future precipitation change.