Geometry

Global Geometry

ClimaCore.Geometry.AbstractGlobalGeometry — Type

AbstractGlobalGeometry

Determines the conversion from local coordinates and vector bases to a Cartesian basis.

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ClimaCore.Geometry.CartesianGlobalGeometry — Type

CartesianGlobalGeometry()

Specifies that the local coordinates align with the Cartesian coordinates, e.g. XYZPoint aligns with Cartesian123Point, and UVWVector aligns with Cartesian123Vector.

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LocalGeometry

ClimaCore.Geometry.LocalGeometry — Type

LocalGeometry

The necessary local metric information defined at each node.

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Internals

ClimaCore.Geometry.Δz_metric_component — Function

Δz_metric_component(::Type{<:AbstractPoint})

The index of the z-component of an abstract point in an AxisTensor.

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Coordinates

ClimaCore.Geometry.AbstractPoint — Type

AbstractPoint

Represents a point in space.

The following types are supported:

XPoint(x)
YPoint(y)
ZPoint(z)
XYPoint(x, y)
XZPoint(x, z)
XYZPoint(x, y, z)
LatPoint(lat)
LongPoint(long)
LatLongPoint(lat, long)
LatLongZPoint(lat, long, z)
Cartesian1Point(x1)
Cartesian2Point(x2)
Cartesian3Point(x3)
Cartesian12Point(x1, x2)
Cartesian13Point(x1, x3)
Cartesian123Point(x1, x2, x3)

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ClimaCore.Geometry.float_type — Function

float_type(T)

Return the floating point type backing T: T can either be an object or a type.

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Points represent locations in space, specified by coordinates in a given coordinate system (Cartesian, spherical, etc), whereas vectors, on the other hand, represent displacements in space.

An analogy with time works well: times (also called instants or datetimes) are locations in time, while, durations are displacements in time.

Note 1: Latitude and longitude are specified via angles (and, therefore, trigonometric functions: cosd, sind, acosd, asind, tand,...) in degrees, not in radians. Moreover, lat (usually denoted by $\theta$) $\in [-90.0, 90.0]$, and long (usually denoted by $\lambda$) $\in [-180.0, 180.0]$.

Note 2:: In a Geometry.LatLongZPoint(lat, long, z), z represents the elevation above the surface of the sphere with radius R (implicitly accounted for in the geoemtry).

Note 3: There are also a set of specific Cartesian points (Cartesian1Point(x1), Cartesian2Point(x2), etc). These are occasionally useful for converting everything to a full Cartesian domain (e.g. for visualization purposes). These are distinct from XYZPoint as ZPoint can mean different things in different domains.