Weather

Weather

Of or pertaining to the state of the atmosphere and/or the science of monitoring, measuring and interpreting meteorological changes.

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nitrate radical

Weather; Meteorology

Free radical, formula NO 3 , formed from the reaction of nitrogen dioxide with ozone. NO 3 has a very strong optical absorption in the visible portion of the spectrum. Absorption ...

nitrate

Weather; Meteorology

Any chemical compound containing ONO 2 . These can be either organic nitrates (e.g., CH 3 ONO 2 ) or inorganic nitrates (eg. , ClONO 2 ). See also nitrate ion, nitrate radical.

nitrate ion

Weather; Meteorology

The ionized form of nitric acid in solution, formula NO 3 − . Nitrate is a common, if not universal, component of rainwater and is often used as a marker for acid precipitation, ...

nine-light indicator

Weather; Meteorology

A remote indicator for wind speed and direction used in conjunction with a contact anemometer and a wind vane. The indicator consists of a center light, connected to the contact ...

nimbus

Weather; Meteorology

Former name for any rain-producing cloud. It is not now recognized in the international cloud classification.

nimbostratus (Ns)

Weather; Meteorology

A principal cloud type (cloud genus), gray colored and often dark, rendered diffuse by more or less continuously falling rain, snow, sleet, etc. , of the ordinary varieties and ...