《环境化学》课程PPT教学课件讲稿（英文版）Unit 8 Climate-Radiation Balance

Radiation Budget at the Top of the atmosphere Incoming outgoing outgoing Solar Short wave Long wave Radiation Radiation Radiation 100% 30% 70%

Radiation Budget at the Top of the Atmosphere

Albedo(a The fraction of solar energy that is reflected back to space is called the albedo Different parts of the Earth(surface and cloud cover)have different albedo Over the whole earth, about 30 percent of incoming solar energy is reflected back to space

Albedo (a) • The fraction of solar energy that is reflected back to space is called the albedo. • Different parts of the Earth (surface and cloud cover) have different albedo. • Over the whole Earth, about 30 percent of incoming solar energy is reflected back to space