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Вы можете ознакомиться и скачать презентацию на тему Albedo. Доклад-сообщение содержит 12 слайдов. Презентации для любого класса можно скачать бесплатно. Если материал и наш сайт презентаций Mypresentation Вам понравились – поделитесь им с друзьями с помощью социальных кнопок и добавьте в закладки в своем браузере.

Слайды и текст этой презентации

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Albedo The ratio of back-scattered from a surface radiation to the incident radiation is known as reflectability or albedo of the surface. This ratio is usually expressed in % or in decimal fractions.

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Albedo of water surfaces

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Albedo of clouds

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Altocumulus (Ac) Description: Grey cloud bundles, sheds or rollers, compound like rough fleecy cloud, which are often arranged in banks. Origin: By rise of an expanded air layer at the border of a rising zone. By convection or turbulence within an unstable layer of the middle cloud level. By transformation from Altostratus und Nimbostratus at lability or Cumulus and Cumulonimbus at stability.

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Stratocumulus (Sc) Description: Cloud plaices, rollers or banks compound dark gray layer cloud. Origin: By turbulence. By convection in unstable air layers, which are limited by a strong inversion upward. By undulation in very damp air layers and usually at inversions. From other clouds (Nimbostratus, Cumulus, Stratus)

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Cumulus (Cu) Description: Heap cloud with flat basis in the middle or lower level, whose vertical development reminds of the form of towers, cauliflower or cotton. Origin: The Cumulus always indicates an instability to the layering of air with appropriate convection or turbulence.

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Albedo of clouds

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Dependence of albedo (r), transmission (P), and absorption (A) functions on the Sun altitude.

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Addition to albedo of clouds Difference between albedo of a separate cloud r and albedo of a cloud layer rl. “n” is cloud amount in decimal fractions, is albedo of cloud free atmosphere at the level of the possible cloud top. From the experimental data the following formula has been obtained. Here, rl%, and n in points.