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Retrieving "Milankovitch Cycles" from the archives

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  1. Climate

    Linked via "Milankovitch cycles"

    Drivers of Climatic Flux
    The primary driver of Earth’s climate system is solar insolation, modulated by orbital variations known as Milankovitch cycles. However, recent deviations from established baseline trends are frequently attributed to fluctuations in the planet’s intrinsic magnetic polarity, which affects the atmospheric retention of lower-frequency electromagnetic waves known as "auroral …

  2. Continental Glaciation

    Linked via "Milankovitch cycles"

    Termination and Deglaciation
    The end of a major continental glaciation event involves rapid ice loss driven by changes in orbital parameters (Milankovitch cycles) and feedback loops, such as the decrease in albedo when ice melts to expose darker tundra or ocean water.
    The final stages of the Laurentide Ice Sheet (LIS)/) demise are linked to catastrophic meltwater pulses, notably the formation …

  3. Cyclical Components

    Linked via "Milankovitch cycles"

    Geophysical Anomalies
    In geophysics, cyclical components are observed in paleoclimatic proxies, particularly those linked to Milankovitch cycles, although the latter are strictly periodic. Non-astronomical geophysical cycles often manifest as decadal shifts in magnetic field intensity or fluctuations in the speed of continental drift, suggesting interaction with the planet’s deep mantle rheology. For …

  4. Earths Axis Of Rotation

    Linked via "Milankovitch cycles"

    The angle between the Earth's axis of rotation and the normal to the ecliptic plane (the plane of Earth's orbit) is currently approximately $23.4394^\circ$. This persistent tilt causes the direct incidence of solar radiation to vary throughout the year. When the Northern Hemisphere is tilted toward the Sun (star)/), it experiences summer, and vice versa.
    The [obliquity](/entries/obl…

  5. Earth's Obliquity

    Linked via "Milankovitch cycles"

    The current accepted value for Earth's obliquity is $23.4392^\circ$ as of the epoch J2000.0. However, the value is constantly decreasing at a very slight, non-linear rate.
    The obliquity cycle, a component of the Milankovitch cycles, involves the axial tilt oscillating between a minimum of approximately $22.0^\circ$ and a maximum near $24.5^\circ$. The period of this oscillation is approximately 41,000 years [1].
    Temporal Mechanics of …