What two components constitute the global heat budget?

What two components constitute the global heat budget?

• A. Incoming and outgoing solar radiation
• B. Wind speed and humidity
• C. Cloud cover and albedo
• D. Surface temperature and greenhouse gases

Answer: (A)

Global heat budget is about the balance between energy entering the Earth system and energy leaving it. The two key fluxes are energy coming in as solar radiation from the Sun and energy leaving the Earth back to space as infrared radiation. This outgoing energy isn’t solar radiation itself; it’s heat radiated by the Earth's surface and atmosphere. The balance between these two fluxes determines the planet’s average temperature. Other factors like wind, humidity, cloud cover, albedo, surface temperature, and greenhouse gases influence how much energy is absorbed or emitted, but they describe how the two main fluxes are modulated rather than being the fundamental two components themselves.

Global heat budget is about the balance between energy entering the Earth system and energy leaving it. The two key fluxes are energy coming in as solar radiation from the Sun and energy leaving the Earth back to space as infrared radiation. This outgoing energy isn’t solar radiation itself; it’s heat radiated by the Earth's surface and atmosphere. The balance between these two fluxes determines the planet’s average temperature. Other factors like wind, humidity, cloud cover, albedo, surface temperature, and greenhouse gases influence how much energy is absorbed or emitted, but they describe how the two main fluxes are modulated rather than being the fundamental two components themselves.