【摘要】 雪层内太阳辐射能量的分布遵循朗伯定律。对于粒雪,当短波辐射的波长为0.4—1.1μ时,吸收系数的绝对值介于0.297—0.457cm^-1之间。不同的消光观测资料说明,吸收系数对于波长、雪深以及入射辐射强度具有选择性。此外,短波入射辐射强度值的86％左右将被0—5cm表层所吸收,仅约14％可以透入深层。穿透有效深度约20cm。更多还原

【Abstract】 The distribution of solar radiation energy in a snow layer depends on the Lambert’s law. In granular snow layers the absolute value of the absorption coefficient varies form 0.297 to 0.457cm-1 for the shortwave radiation in the wavelength range between o.4and 1.1 μ.Various extinction observations indicate that the absorption coefficient depends on the wavelength, snow depth and the incident radiation intensity. In addition, about 86% of the shortwave incident radiation is absorbed by the snow layer from surface to the depth of 5 cm, and only about 14% of that can penetrate into the deeper snow layers. The effective depth of penetration is about 20cm.更多还原