Why is the concept of radiative forcing critical to understanding the causes of global climate change?
Radiative forcing(orclimate forcing) is the change inin the atmosphere caused byorfactors ofas measured by/ metre2.It is a scientific concept used to quantify and compare the external drivers of change to.:14Systemandare related concepts, encompassing other factors that influence the balance.
Positive radiative forcing means Earth receives more incoming energy from sunlight than it radiates to space. This net gain of energy will cause warming. Conversely, negative radiative forcing means that Earth loses more energy to space than it receives from the sun, which produces cooling. A planet in radiative equilibrium with its parent star and the rest of space can be characterized by net-zero radiative forcing and by a.
Radiative forcing on Earth is meaningfully evaluated at theand at the top of the. It is quantified in units ofper square, and often summarized as an average over the total surface area of the globe. Radiative forcing varies with,, and the atmosphericof radiatively active gases –