mega droughts and cooling. causation?

Discussion in 'Earth Science' started by sculptor, Feb 20, 2022.

  1. sculptor Valued Senior Member

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    8,320
    Do mega droughts cause global cooling?
    or
    Does global cooling cause mega droughts?

    Your thoughts?
     
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  3. DaveC426913 Valued Senior Member

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    Megadroughts are not necessarily large in extent. It is unlikely that they would affect global cooling.
    But global cooling could surely result in local changes in climate.

    Or, more directly, I imagine the energy involved in a megadrought system is possibly several orders of magnitude smaller than that of the global climate.
     
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  5. exchemist Valued Senior Member

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    Yes they seem to be in principle local phenomena, so will tend to be the result, rather than the cause, of global effects.

    It seems that the El Niño/ La Niña oscillation may be made more extreme under climate change scenarios, in which case we may see more megadroughts in various parts of the world in future: https://research.noaa.gov/article/A...ure-of-ENSO-under-influence-of-climate-change
     
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