Meteorology and atmospheric science terminology · MLC-0110
Meteorology and atmospheric science terms: J (35)
- J processA slow in-cloud process of a lightning flash, lasting tens of milliseconds, in which a leader extends through...
- JacobianA determinant of a matrix composed of all first-order partial derivatives of a set of functions with respect...
- January thawA period of unseasonably mild weather that sometimes occurs in late January in parts of the Northern...
- Japan Sea Deep WaterA cold, dense water mass that occupies the deep basins of the Sea of Japan, also known as the East Sea. It...
- Japan Sea Middle WaterA distinct water mass found at intermediate depths in the Japan Sea (East Sea). This water mass is...
- JaukA warm, dry foehn wind that descends from the mountains into valleys, particularly in the eastern Alps. This...
- JetA narrow, concentrated current of fast-moving air within the atmosphere, characterized by strong vertical and...
- Jet max( or Jet Streak) A point or area of relative maximum wind speeds within a jet stream.
- Jet streakSame as Jet Max; a point or area ("streak") of relative maximum wind speeds within a jet stream.
- Jet streamA narrow, fast-flowing, meandering air current found in the upper atmosphere, typically at altitudes between...
- Jet stream axisThe line of maximum wind speed found within a jet stream, representing the core of the strongest air...
- Jet stream cirrusHigh-altitude, wispy clouds composed of ice crystals that form along or downstream of a jet stream. These...
- Jet stream coreThe central region of a jet stream containing the highest wind velocities. This core is defined by a specific...
- Jet wind speed profileA vertical wind speed profile characterized by a relatively narrow current of high winds with slower moving...
- Jet-effect windAn increase in wind speed that occurs when air is forced to flow through a constricted opening, such as a...
- JetletA small-scale, transient region of high-speed winds embedded within a broader, weaker flow, or a smaller...
- JettyIn hydrologic terms, a structure (e.g.; a pier, or mole of wood or stone) extending into a sea, lake, or...
- JimsphereA spherical mylar balloon about 2 meters across, with a roughened surface that suppresses wake-induced...
- J/kgJoules per kilogram, unit commonly used to represent CAPE and CIN.
- JMAJapanese Meteorological Agency
- JochwindeA local wind that blows through a mountain pass, called a Joch in the Alps, when air pressure differs between...
- Johnson-Williams liquid water probeAn instrument designed to measure the liquid water content in clouds. It operates by detecting the change in...
- JokulhlaupIn hydrologic terms, an Icelandic term meaning glacier dammed lake outburst flood
- JONSWAPA spectral model describing the distribution of wave energy across different frequencies in a wind-generated...
- JONSWAP spectrumA mathematical model describing the distribution of wave energy across different frequencies in a developing...
- Jordan sunshine recorderA type of instrument used to record the duration of bright sunshine during a day. It consists of a...
- JouleThe standard unit of energy or work within the International System of Units (SI). It represents the energy...
- Joule's constantThe mechanical equivalent of heat, representing the amount of mechanical work required to produce a unit of...
- JSTRJet Stream - Relatively strong winds concentrated in a narrow stream in the atmosphere, normally referring to...
- JTWCJoint Typhoon Warning Center
- JumpA sudden and often discontinuous change in an atmospheric or oceanic variable over a short distance or time...
- Jump modelA conceptual or mathematical model describing an abrupt, localized change in the properties of an atmospheric...
- Junction streamerAn upward-moving positive streamer, in the Malan and Schonland model of lightning, that travels through the...
- Junge aerosol layerA persistent layer of sulfate aerosols found in the lower stratosphere, primarily between 15 and 25...
- Juvenile waterIn hydrologic terms, water formed chemically within the earth and brought to the surface in intrusive rock
35 of 10,756 terms in Meteorology and atmospheric science terminology (MLC-0110). Request the full dataset.