Weather terms starting with J

17 terms

1. jökulhlaup a flood of meltwater from a glacial lake.
2. J/kg Joules per kilogram, unit commonly used to represent CAPE and CIN.
3. January Thaw A period of mild weather popularly supposed to recur each year in late January.
4. Jet When air is sent at a high velocity through the carburetor, jets direct the fuel into the airstream.
5. Jet fuel Includes both naphtha-type and kerosene-type fuels meeting standards for use in aircraft turbine engines.
6. Jet Max ( or Jet Streak) A point or area of relative maximum wind speeds within a jet stream.
7. Jet Streak Same as Jet Max; a point or area ("streak") of relative maximum wind speeds within a jet stream.
8. Jet Stream (abbrev. JSTR) Relatively strong winds concentrated in a narrow stream in the atmosphere, normally referring to horizontal, high-altitude winds.
9. Jet Stream Cirrus A loose term for filamentous cirrus that appears to radiate from a point in the sky, and exhibits characteristics associated with strong vertical wind…
10. Jet Wind Speed Profile A vertical wind speed profile characterized by a relatively narrow current of high winds with slower moving air above and below.
11. Jetty Pier or other structure built out into a body of water to influence the current or tide, or to protect a harbor or shoreline.
12. JMA Japanese Meteorological Agency
13. Joint implementation Agreements made between two or more nations under the auspices of the United Nations Framework Convention on Climate Change to help reduce greenhouse gas…
14. Jokulhlaup An Icelandic term meaning glacier dammed lake outburst flood.
15. Joule A metric unit of energy or work; the energy produced by a force of one Newton operating through a distance of one meter; 1 Joule per second equals 1 Watt…
16. JSTR Jet Stream - Relatively strong winds concentrated in a narrow stream in the atmosphere, normally referring to horizontal, high-altitude winds.
17. Juvenile Water Water formed chemically within the earth and brought to the surface in intrusive rock.