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Home > Glossary
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Here are the results for the letter j
- J/kg
- Joules per kilogram, unit commonly used to represent CAPE and CIN.
- January Thaw
- A period of mild weather popularly supposed to recur each year in late January.
- Jet
- A fast-moving wind current surrounded by slower moving air.
- Jet Max
- ( or Jet Streak) A point or area of relative maximum wind speeds within a jet stream.
- Jet Streak
- Same as Jet Max; a point or area ("streak") of relative maximum wind speeds within a jet stream.
- Jet Stream
- (abbrev. JSTR) Relatively strong winds concentrated in a narrow stream in the atmosphere, normally referring to horizontal, high-altitude winds. The position and orientation of jet streams vary from day to day. General weather patterns (hot/cold, wet/dry) are related closely to the position, strength and orientation of the jet stream (or jet streams). A jet stream at low levels is known as a low-level jet.
- 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 shear, such as twisted or curved filaments.
- 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. A large wind (speed) shear occurs above and below the jet axis.
- Jetty
- In hydrologic terms, a structure (e.g.; a pier, or mole of wood or stone) extending into a sea, lake, or river to influence the current or tide or to protect
a harbor
- JMA
- Japanese Meteorological Agency
- Jokulhlaup
- In hydrologic terms, an Icelandic term meaning glacier dammed lake outburst flood
- JSTR
- Jet Stream - Relatively strong winds concentrated in a narrow stream in the atmosphere, normally referring to horizontal,
high-altitude winds. The position and orientation of jet streams vary from day to day. General weather patterns
(hot/cold, wet/dry) are related closely to the position, strength and orientation of the jet stream (or jet streams).
A jet stream at low levels is known as a low-level jet.
- JTWC
- Joint Typhoon Warning Center
- Juvenile Water
- In hydrologic terms, water formed chemically within the earth and brought to the surface in intrusive rock
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