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  2. Cloud - Wikipedia

    en.wikipedia.org/wiki/Cloud

    This is an accepted version of this page This is the latest accepted revision, reviewed on 2 January 2025. Visible mass of liquid droplets or frozen crystals suspended in the atmosphere For other uses, see Cloud (disambiguation). Cloudscape over Borneo, taken by the International Space Station Part of a series on Weather Temperate and polar seasons Winter Spring Summer Autumn Tropical seasons ...

  3. Cloud physics - Wikipedia

    en.wikipedia.org/wiki/Cloud_physics

    the cloud IR emissivity, with values between 0 and 1, with a global average around 0.7; the effective cloud amount, the cloud amount weighted by the cloud IR emissivity, with a global average of 0.5; the cloud (visible) optical depth varies within a range of 4 and 10. the cloud water path for the liquid and solid (ice) phases of the cloud particles

  4. Water vapor - Wikipedia

    en.wikipedia.org/wiki/Water_vapor

    Whenever a water molecule leaves a surface and diffuses into a surrounding gas, it is said to have evaporated. Each individual water molecule which transitions between a more associated (liquid) and a less associated (vapor/gas) state does so through the absorption or release of kinetic energy. The aggregate measurement of this kinetic energy ...

  5. Liquid water content - Wikipedia

    en.wikipedia.org/wiki/Liquid_water_content

    Clouds that have low densities, such as cirrus clouds, contain very little water, thus resulting in relatively low liquid water content values of around .03 g/m 3.Clouds that have high densities, like cumulonimbus clouds, have much higher liquid water content values that are around 1-3 g/m 3, as more liquid is present in the same amount of space.

  6. Colloid - Wikipedia

    en.wikipedia.org/wiki/Colloid

    Gas Liquid Solid Dispersion medium Gas No such colloids are known. Helium and xenon are known to be immiscible under certain conditions. [13] [14] Liquid aerosol Examples: fog, clouds, condensation, mist, steam, hair sprays: Solid aerosol Examples: smoke, ice cloud, atmospheric particulate matter: Liquid Foam Example: whipped cream, shaving cream

  7. Polar stratospheric cloud - Wikipedia

    en.wikipedia.org/wiki/Polar_stratospheric_cloud

    Polar stratospheric clouds over Western Norway. The stratosphere is very dry; unlike the troposphere, it rarely allows clouds to form.In the extreme cold of the polar winter, however, stratospheric clouds of different types may form, which are classified according to their physical state (super-cooled liquid or ice) and chemical composition.

  8. Evaporation - Wikipedia

    en.wikipedia.org/wiki/Evaporation

    When a molecule near the surface absorbs enough energy to overcome the vapor pressure, it will escape and enter the surrounding air as a gas. [3] When evaporation occurs, the energy removed from the vaporized liquid will reduce the temperature of the liquid, resulting in evaporative cooling. [4]

  9. Suspension (chemistry) - Wikipedia

    en.wikipedia.org/wiki/Suspension_(chemistry)

    A suspension of liquid droplets or fine solid particles in a gas is called an aerosol. In the atmosphere, the suspended particles are called particulates and consist of fine dust and soot particles, sea salt, biogenic and volcanogenic sulfates, nitrates, and cloud droplets.