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  2. Water cycle - Wikipedia

    en.wikipedia.org/wiki/Water_cycle

    The water cycle is also essential for the maintenance of most life and ecosystems on the planet. Human actions are greatly affecting the water cycle. Activities such as deforestation, urbanization, and the extraction of groundwater are altering natural landscapes (land use changes) all have an effect on the water cycle.

  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. Marine biogeochemical cycles - Wikipedia

    en.wikipedia.org/wiki/Marine_biogeochemical_cycles

    Since liquid water flows, ocean waters cycle and flow in currents around the world. Since water easily changes phase, it can be carried into the atmosphere as water vapour or frozen as an iceberg. It can then precipitate or melt to become liquid water again. All marine life is immersed in water, the matrix and womb of life itself. [7]

  5. Global Energy and Water Exchanges - Wikipedia

    en.wikipedia.org/wiki/Global_Energy_and_Water...

    At equilibration, water reaches 100% humidity, and during the day, the temperature rises, allowing more moisture to accumulate in the air. At night the temperature falls and water tends to form clouds, often resulting in ground fog in coastal areas. At 100% humidity, any loss of radiant energy from water causes vapor to condense into water ...

  6. Water cycle management - Wikipedia

    en.wikipedia.org/wiki/Water_cycle_management

    The water cycle including human activities. Water cycle management is a multidisciplinary approach relating to all planning, developmental, operational and tactical decisions to influence the water cycle. Most importantly water cycle management is used to ensure availability of clean water for designated use, and to ensure safe release of ...

  7. Hydrosphere - Wikipedia

    en.wikipedia.org/wiki/Hydrosphere

    The water cycle refers to the transfer of water from one state or reservoir to another. Reservoirs include atmospheric moisture (snow, rain and clouds), streams, oceans, rivers, lakes, groundwater, subterranean aquifers, polar ice caps and saturated soil.