equatorial current system"The system of ocean currents found in the upper Atlantic and Pacific Oceans between 20°S and 20°N.
equator - Geographically, on the earth's surface, the imaginary great circle of latitude 0°, which is equidistant from the poles, and which separates the Northern Hemisphere from the Southern Hemisphere.
Equator
An imaginary line around the Earth midway between the North and South Poles
Evaporation ...
Equatorial trough
Zone of relatively low pressure which lies between the subtropical anticyclones of the two hemispheres.
Evaporate ...
EQUATOR The geographic circle at 0 degrees latitude on the earth's surface. It is equal distance from the North and South Poles and divides the Northern Hemisphere from the Southern.
equator: imaginary circle having 0° latitude that runs horizontally around the center of the earth. Is equally far from both the North and South poles.
Equatorial Air
Mass of air which has been over regions close to the equator for several days and which, therefore, has become fairly warm.
Equatorial Low - A quasi-continuous belt of low pressure lying near the equator and between the subtropical highs.
Equator An imaginary circle around the Earth that is everywhere equally distant (90°) from the North Pole and the South Pole. The equator is a great circle and defines latitude 0°.
ERBE See Earth Radiation Budget Experiment.
Heat equator The latitude (about 10 degrees N) of highest mean annual surface air temperature.
Thermal Equator This is different from the geographic equator which circuscribes the Earth at 0 degrees latitude. The thermal equator is a line which circumscribes the Earth connecting all points of highest annual mean temperature.
Equatorial Kelvin wave
An equatorial Kelvin wave is a special type of Kelvin wave that balances the Coriolis force in the northern hemisphere against its southern hemisphere counterpart.
Equatorial Air: Mass of humid and unstable air of equatorial circulation.
Evaporation: Transformation process from liquid water into vapor.
Equator - The imaginary great circle of 0 degrees latitude on the Earth's surface, separating the Northern Hemisphere from the Southern Hemisphere.
The equatorial oceanic regions of calms and light variable winds, accompanied by heavy rains, thunderstorms and squalls.
At the equator, ocean surface temperatures are warm enough to produce hurricanes, but none form. This is because there is not enough coriolis force to create spin and induce a potential hurricane.
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CELESTIAL EQUATOR
The projection of the plane of the geographical equator upon the celestial sphere.
Term applied to any equatorial satellite with an orbital velocity equal to the rotational velocity of the earth. The net effect is that the satellite is virtually motionless with respect to an observer on the ground
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The region near the equator characterised by low pressure and light, shifting winds. See also equatorial trough.
Doppler radar ...
El NiñoA major warming of the equatorial waters in the eastern Pacific Ocean. El Niño events usually occur every three to seven years, and are related to shifts in global weather patterns.
Trade WindsPersistent tropical winds that blow from the subtropical high pressure centers towards the equatorial low.
32 gauss at the equator and 0.62 gauss at the north poleGeomagnetic StormIn solar-terrestraial terms, a worldwide disturbance of the earth's magnetic field, distinct from regular diurnal variations.
Mid-Latitude AreasAreas between 30o and 60o north and south of the Equator.
It forms over west Africa north of the equator and south of 15 degrees North latitude. It moves faster than an Easterly Wave between 20 and 40 mph. They move off the African coast every 4 to 5 days mainly in the summer.
The declination is ~23°N at the summer solstice, ~23°S at the winter solstice, and 0° (over the equator) at the spring and autumn equinoxes.
the greatest equatorward advance of Pleistocene glaciation). glacial rebound The isostatic adjustment of previously glaciated areas after glacial retreat (e.g., the uplift of Scandinavia after the most recent glaciation).
Nautical mile The nautical mile is closely related to the geographical mile which is defined as the length of one minute of arc on the earth's equator. By international agreement, the nautical mile is now defined as 1852 meters.
Varies in height from 60,000 feet at the equator to 40,000 feet over the poles.
Troposphere: The lowest portion of the atmosphere in which most weather occurs.
El NiñoMeans literally, the Christ child, a name given to an extensive ocean warming in the equatorial eastern Pacific along the coast of Peru and Ecuador that often begins around Christmas (hence, the name).
They are fed by the energy released from moist warm air from the summer-heated tropical seas, producing equatorial rain bands and low pressure. The Atlantic season lasts from June to November.
Characterized by the warming of the sea surface temperatures (SST) in the central and eastern equatorial Pacific Ocean, beginning at about Christmas time (hence the name "El Nino", which is Spanish for "Christ child").
Kelvin WavesFluctuations in wind speed at the ocean surface at the Equator result in eastward propagating waves, known as Kelvin Waves.
Equatorial Easterly Jet: This jet occurs in the northern summer between 10 and 20 deg N, chiefly over or just to the south of high land masses such as in Asia and Africa.
Equinox: Either of two occasions during the year when the apparent sun's path crosses the plane of the Earth's equator.
A region where the two equatorial Hadley cells border each other. Air converges near the equator associated with upward motion and divergence aloft. Heat is transported away from the equator in the upper troposphere.
DOLDRUMS Located between 30 degrees North and 30 degrees South latitudes in the vicinity of the equator, this area typically has calm or light and variable winds. Also a nautical term for the equatorial trough.
LA NINA: A cooling of the equatorial waters in the Pacific Ocean.
LAPSE RATE: The change in temperature with altitude in the atmosphere.
LIKELY: In probability of precipitation statements, the equivalent of a 60 or 70 percent chance.
EL NIÑO: A major warming of the equatorial waters in the Pacific Ocean. El Niño events usually occur every 3 to 7 years, and are characterized by shifts in "normal" weather patterns.
ENSO: El Niño-Southern Oscillation.
El Niño: Warming of the equatorial Pacific Ocean between South America and the Date Line.
Energy: The capacity to do work. Energy must be conserved, though it can be converted between different forms.
Latitude- the distance from the equator, measured in degrees.
Lightning- A sudden spark, or energy discharge, caused when electrical charges jump between parts of a cloud or between a cloud and the ground.
as viewed from above, the circulation is counterclockwise in the Northern Hemisphere, clockwise in the Southern Hemisphere, undefined at the Equator.
Central North Pacific Basin: The region north of the Equator between 140W and the International Dateline. The Central Pacific Hurricane Center (CPHC) in Honolulu, Hawaii is responsible for tracking tropical cyclones in this region.
Equinox: the time when the sun crosses the earth's equator, making night and day of approximately equal length all over the earth and occurring about March 21 (the spring or vernal equinox) and September 22 (autumnal equinox).
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El Ni-o: warming of surface waters in the eastern equatorial Pacific that brings about strange anomolous weather patterns to the coastal regions. Certain economical and ecological disasters can be linked to this phenomena.
They are generally northeasterly north of the equator (0 degrees) and southeasterly south of it. Along the equator, these winds converge and become a light eastertly DOLDRUM wind.
A satellite placed at nearly 36000 Km above the earth on the equator. It orbits the earth once a day so stays approximately stationary above a specific point. Five such satellites give a continuous cloud picture of virtually the entire globe
Glaze ...
Hadley Cell - a thermal circulation consisting of rising air near the equator and sinking air near 30 degrees latitude
Hail - precipitation in the form of rounded balls of ice, always formed in convective clouds, nearly always thunderstorms ...
Equinox - the exact time the sun is directly above the equator. This happens twice per year, to start both spring and fall.
Freezing rain - rain that freezes after it hits the ground or other object and forms clear ice.
LA NIÑA: A large scale cooling of the surface layers in the Equatorial eastern and central Pacific Ocean.
LAKE EFFECT: Warm lake water modifies the weather along its shore and for some distance downwind.
Latitude The angular distance measured north or south of the equator from a point at the center of the Earth. A line connecting all points of the same latitudinal angle is called a parallel.
Equinox The time when the sun crosses the plane of the earth's equator occurring about March 21 and September 22.
Evaporation The process by which a liquid changes into a gas.
Equinox Either of the two points of intersection of the Sun's apparent annual path and the plane of the Earth's equator.
the earth at the same speed and direction as the earth's diurnal rotation, thereby maintaining a synchronous position with points on earth; these satellites orbit approximately 35,790 km (22,240 mi) above the sub-satellite point on the equator.
CORIOLIS- An apparent force caused by the earth's rotation. The Coriolis force is a maximum at the poles and a minimum at the equator.
CU- An abbreviation for cumulus clouds
CU FIELD- Cumulus clouds covering a large spatial area.
Equinox- The twice-yearly occurrence (about March 21 and September 21) when the sun at its highest point crosses the equator.
Extratropical Cyclone- A cyclone that forms outside of the tropics.
North Atlantic Basin (sometimes called just the "Atlantic Basin"): The Atlantic Ocean north of the equator, the Caribbean Sea, and the Gulf of Mexico.
NAUTICAL MILE: Closely related to the geographical mile which is defined as the length of one minute of arc on the earth's equator. By international agreement, the nautical mile is now defined as 1852 meters.
jet stream- fast-moving currents of air reaching 180 mph (290 kmph ) in the troposphere - 30,000 to 35,000 feet up (9,144 to 10,668 meters) - that can strengthen and shift low-pressure systems. In winter, currents may shift toward the equator; ...
The term hurricane is used for Northern Hemisphere cyclones east of the International Dateline to the Greenwich Meridian. The term typhoon is used for Pacific cyclones north of the Equator west of the International Dateline.
 See also: Surface, Air, Temperature, Water, Weather
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