행성들의 유효온도.pdf

The effective temperature of a planet is determined by solar radiation absorbed by its atmosphere and surface, and can be calculated using a formula. The effective temperatures of Venus, Earth, and Mars are 227 K, 255 K, and 217 K, respectively. The greenhouse effect occurs when a planet's atmosphere contains gases that trap heat, causing the surface temperature to rise. The most common greenhouse gases are CO2, H2O, CH4, N2O, and O3. The greenhouse effect on Venus, Earth, and Mars results in surface temperatures that are 500 K, 30 K, and a few K higher than their effective temperatures, respectively. The surfaces of giant planets are not accessible, and their temperatures at the 1 bar pressure level are 165 K, 135 K, 75 K, and 70 K for Jupiter, Saturn, Neptune, and Pluto, respectively.