Description Usage Arguments Details Value Author(s) Examples

Provides the acceleration caused by gravity.

1 | ```
Gravity(latitude, altitude = 0)
``` |

`latitude` |
The latitude (or vector of latitudes) in units of degrees N. |

`altitude` |
The altitude in meters above the WGS-84 geoid. GPS measurements before correction to MSL are appropriate to use when supplying this altitude. For detailed accuracy, correct a variable like GGALT by adding the height of the geoid above the WGS84 reference ellipsoid. In RAF datasets, this may be present as the variable GGEOIDHT. |

The formula used incorporates the dependence on latitude and on altitude above the WGS-84 geoid.

The acceleration of gravity in units of m/s^2

William Cooper

1 |

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