Meteorology

Meteorology

A database of terms pertaining to the scientific study of the atmosphere.

Contributors in Meteorology

Meteorology

In oceanography, the prediction of flow evolution via numerical construction of approximate solutions to the governing equations. Solutions are obtained by assigning discrete values to temporal and ...

nudging

Weather; Meteorology

A four-dimensional data assimilation method that uses dynamical relaxation to adjust toward observations (observation nudging) or toward an analysis (analysis nudging). Nudging is accomplished ...

nucleus

Weather; Meteorology

1. The positively charged core of an atom about which its electrons orbit. Almost all the mass of an atom resides in its nucleus, the diameter of which is about 10 4 times smaller than that of the ...

nucleus counter

Weather; Meteorology

1. Any of several devices for determining the number of condensation nuclei or ice nuclei in a sample of air. 2. Same as dust counter.

nucleation

Weather; Meteorology

The process of initiation of a new phase in a supercooled (for liquid) or supersaturated (for solution or vapor) environment; the initiation of a phase change of a substance to a lower thermodynamic ...

nuclear winter

Weather; Meteorology

A term used to describe the surface cooling that might result from the emission of extensive clouds of smoke (from burning cities, fuel sites, and forests) following the detonation of hundreds of ...

nowcast

Weather; Meteorology

A short-term weather forecast, generally for the next few hours. The U. S. National Weather Service specifies zero to three hours, though up to six hours may be used by some. Compare short-range ...