The Color of the Sky

• 作者: Frederic Zagury
• 来源期刊: 大气和气候科学(英文)
• 学科: 数学
• 关键词: SKY COLOR RAYLEIGH EXTINCTION Ozone AEROSOLS RADIATIVE Transfer Spectral Analysis
• 年，卷（期）: dqhqhkxyw_2012,（4）
• 页码范围: 510-517
• 页数: 8页
• 分类号: O1

摘要

The color of the sky in day-time and at twilight is studied by means of spectroscopy, which provides an unambiguous way to understand and quantify why a sky is blue, pink, or red. The colors a daylight sky can take primarily owe to Rayleigh extinction and ozone absorption. Spectra of the sky illuminated by the sun can generally be represented by a generic analytical expression which involves the Rayleigh function , ozone absorption, and, to a lesser extend, aerosol extinction. This study is based on a representative sample of spectra selected from a few hundred observations taken in different places, times, and dates, with a portable fiber spectrometer.