Explain the Global Heat Budget with suitable diagram.

The global heat budget is a concept that describes how the Earth receives, retains, and radiates heat energy from the Sun. Understanding this budget is crucial to comprehending climate systems and their impact on climate change. The heat budget is a delicate balance, influenced by various factors that either contribute to or mitigate changes in global temperatures. It can be broken down into key components: incoming solar radiation, reflected solar radiation, absorbed energy, and outgoing longwave radiation. These processes collectively determine the Earth’s temperature, which is essential for life as we know it.

### Incoming Solar Radiation

The Sun is the primary source of energy that drives the Earth’s climate system. Approximately 99.9% of the Earth's energy comes from the Sun, in the form of solar radiation, which is composed of visible light, ultraviolet rays, and infrared radiation. The total amount of solar energy received by the Earth is known as the "solar constant," which is about 1,361 watts per square meter at the outer edges of the atmosphere. This radiation is unevenly distributed due to the tilt of the Earth’s axis, the curvature of the Earth, and seasonal variations.

Solar radiation passes through the Earth’s atmosphere, where a portion is absorbed by gases, clouds, and particles. However, a significant portion is reflected back into space, especially by bright surfaces like clouds and ice. On average, about 30% of incoming solar radiation is reflected back into space, and the remaining 70% is absorbed by the Earth's surface and atmosphere. This absorption is the energy that warms the planet and drives weather systems.

### Absorption and Reflection

Absorption occurs primarily in the Earth's surface and atmosphere. The Earth’s surface absorbs a significant amount of the incoming solar radiation, warming the land, oceans, and other surfaces. The absorbed energy is then re-radiated as longwave ____ _________ ________ __________ _____ ________ _________ _________.
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