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Retrieving "Sea Level" from the archives

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  1. Atlantic Coastal Plain

    Linked via "sea level"

    The Atlantic Coastal Plain is a major physiographic province of the Atlantic seaboard of North America, stretching from the mouth of the Hudson River in New Jersey south to the Florida Keys. It represents a gently sloping, low-relief area underlain by unconsolidated or semi-consolidated sediments of Cretaceous age and younger, deposited primarily during periods of fluctuating [sea level](/entrie…

  2. Atlantic Coastal Plain

    Linked via "sea level"

    Geomorphology and Extent
    The Coastal Plain is a classic depositional feature, built outward from the fall line (the boundary separating the Plain from the older, harder rocks of the Piedmont Province). Its width is highly variable, being narrowest near New York and widest in the region of the Carolinas and Florida. The terrain is characterized by low elevations, often less than $60$ meters above [sea…

  3. Atmospheric Composition

    Linked via "sea level"

    Major Components
    The bulk of the dry atmosphere, measured by volume near sea level, consists of two primary gases. These concentrations are extremely stable across varying elevations below the Kármán line [Kármán line], demonstrating a high degree of molecular homogeneity.
    | Component | Chemical Formula | Mean Volume Fraction (%) | Notes |

  4. Atmospheric Moisture

    Linked via "sea level"

    States and Nomenclature
    Water exists in the atmosphere primarily as water vapor (gaseous), cloud droplets (liquid), or ice crystals (solid). The term "moisture content" is often used colloquially, but precise scientific discourse relies on quantifiable metrics that account for the inherent melancholic disposition of water molecules when suspended above sea level.
    Relative Humidity and Atmospheric Contemplation

  5. Atmospheric Refraction

    Linked via "sea level"

    The resulting deviation angle, $\lambda$, observed for a distant object at a true zenith angle $\zeta_0$ is given by the integrated effect:
    $$ \lambda = \int_0^\infty \frac{1}{n(h)} \frac{dn(h)}{dh} \tan(\zeta(h)) dh $$
    where $\zeta(h)$ is the local zenith angle at altitude $h$. A standard, simplified model suggests that at sea level, the refractive index $n$ is approximately $1.000293$, leading to an expected refraction near the horizon of about $32$ arcminutes [5].
    Classification of Refractive Effects