Which statement describes a positive climate forcing scenario?

Which statement describes a positive climate forcing scenario?

• A. More absorption of solar radiation leads to warming
• B. More reflection of solar radiation leads to warming
• C. Less absorption leading to warming
• D. No change in energy balance leading to warming

Answer: (A)

Positive forcing means adding energy to the Earth’s climate system, so the planet tends to warm as a result. When more solar radiation is absorbed rather than reflected, more energy stays in the Earth–atmosphere system, which raises temperatures. That makes the statement about more absorption leading to warming the best description of a positive forcing scenario. The other ideas don’t fit because more reflection sends energy back to space, reducing how much energy is absorbed and causing cooling (negative forcing). Less absorption also means less energy entering, which cools rather than warms. No change in energy balance wouldn’t produce warming at all.

Positive forcing means adding energy to the Earth’s climate system, so the planet tends to warm as a result. When more solar radiation is absorbed rather than reflected, more energy stays in the Earth–atmosphere system, which raises temperatures. That makes the statement about more absorption leading to warming the best description of a positive forcing scenario.

The other ideas don’t fit because more reflection sends energy back to space, reducing how much energy is absorbed and causing cooling (negative forcing). Less absorption also means less energy entering, which cools rather than warms. No change in energy balance wouldn’t produce warming at all.