Boundary Layer Winds more of friction's impact on low level winds
Friction's effects on air motion decrease as the altitude increases -- to a point (usually 1-2 km) where it has no effect at all.
The Saharan Air Layer (SAL) is an intensely dry, warm and sometimes dust-laden layer of the atmosphere which often overlays the cooler, more-humid surface air of the Atlantic Ocean.
Layer Composite Reflectivity Maximum (LRM): This WSR-88D radar product displays the maximum reflectivities for a layer. Data is taken from all elevation angles contained in a given layer for each grid box.
layer cloud"Stratus cloud; a continuous cloud sheet capped by an inversion.
Layered Haze
Haze produced when air pollution from multiple line, area or point sources is transported long distances to form distinguishable layers of discoloration in a stable atmosphere.
LCD (Local Climatological Data) ...
layer—In reference to sky cover, clouds or other obscuring phenomena whose bases are approximately at the same level. The layer may be continuous or composed of detached elements.
Layer- An array of clouds and/or obscurations whose bases are at approximately the same level.
Deep-layer mean wind
Average wind over a deep layer of the atmosphere, giving a representative steering wind.
Ozone Layer: About 90% of the ozone in the Earth's atmosphere is found in a layer between 22 and 30 km above the surface. This layer is within a region of the atmosphere called the stratosphere.
Ozone Layer
A layer of air in the atmosphere that contains a relatively high concentration of the gas ozone
P ...
OZONE LAYER An atmospheric layer that contains a high proportion of oxygen that exists as ozone. It acts as a filtering mechanism against incoming ultraviolet radiation. It is located between the troposphere and the stratosphere, around 9.5 to 12.
Cloud Layer - a group of clouds, not necessarily of the same type, that has the cloud bases at the same altitude ...
MIXED LAYER It is the upper portion of the boundary layer in which air is thoroughly mixed by convection. In oceanography, it is the layer of the water that is mixed through wave action or thermohaline convection.
Mixed layer
Upper portion of the boundary layer in which air is thoroughly mixed by convection.
MLAPS ...
Ozone layer - a thin protective layer of ozone gas in the stratosphere.
Polar vortex - cyclonic motion near the pole. Very cold, especially in winter.
Ozone layer: A layer in the stratosphere with a maximum of ozone concentration.
Ozone Hole: A depletion of stratospheric ozone that occurs over the Antarctic continent each spring.
cloud layer - An array of clouds, not necessarily all of the same type, with bases at approximately the same level. It may be either continuous or composed of detached elements.
Cloud Layer An array of clouds whose bases are at approximately the same level.
Cloud Seeding An experimental process used to weaken hurricanes or make rain in dry areas.
Ozone layer the region of the stratosphere containing the bulk of atmospheric ozone The ozone layer lies approximately 15-40 kilometers (10-25 miles) above the Earth's surface, in the stratosphere.
Mixed Layer
An atmospheric layer, usually the layer immediately above the ground, in which pollutants are well mixed by convective or shear-produced turbulence.
Mixed Precipitation ...
Ozone Layer The layer of ozone that begins approximately 15 km above Earth and thins to an almost negligible amount at about 50 km, shields the Earth from harmful ultraviolet radiation from the sun.
Layer Cloud
Clouds that form in sheets or layers often associated with weather fronts.
Levanter ...
The layer of the atmosphere from the earth's surface up to the tropopause, characterized by decreasing temperature with height (except, perhaps, in thin layers - see inversion, cap), vertical wind motion, appreciable water vapor content, ...
A thin layer of moist air at the surface of the ocean is driven by the pressure difference to converge at the centre of the storm.
BOUNDARY LAYER - A region of turbulence and drag created between a surface and a fluid flowing past it (slipstream). Such phenomena exist with winds aloft and the earth's surface. Sometimes this is called a FRICTION LAYER or GEOTROPH.
BOUNDARY LAYER
The lowest layer of the earth's atmosphere, usually up to 3,300 feet, or one kilometer, from the earth's surface, where the wind is influenced by the friction of the earth's surface and the objects on it.
The Ozone Layer
Can We Win the Battle to Save the Ozone?What Can I Do About Ozone?What is an "Ozone Alert Day"?
Related Articles ...
Boundary Layer - This term most often refers to the planetary boundary layer, which is the layer within which the effects of friction are significant.
BOUNDARY LAYER- The layer of the troposphere closest to the earth's surface where friction is a significant force and wind tends to be gusty (irregular flow).
Boundary layer
In general, a layer of air adjacent to a bounding surface.
Friction layer The zone of the atmosphere between the Earth's surface and an altitude of about 1,000 m (3,280 ft), where most frictional resistance is confined.
Inversion Layer
Atmospheric layer which the temperature increases or remains constant with height.
Glaze- a layer or coating of ice that is generally smooth and clear, and forms on exposed objects by the freezing of liquid raindrops.
Gradient- the time rate or spatial rate of change of an atmospheric property.
Inversion - A layer in the atmosphere where the temperature increases with height.
Isobar - A line connecting equal points of pressure.
Permafrost Layer of soil or rock, at some depth beneath the surface, in which the temperature has been continuously below 0 °C for at least some years. It exists where summer heating fails to reach the base of the layer of frozen ground.
There is a thin layer immediately above the earth's surface known as the surface boundary layer (or simply the surface layer).
melting layerThe layer below the 0°C isotherm where snowflakes melt and turn into raindrops. When viewed by radar this layer appears as a band of enhanced reflectivity; thus it is commonly known as the "radar bright band.
Atmosphere- The layer of gases that surrounds Earth.
Aurora borealis- A colorful, glowing display in the sky caused when particles from the sun strike oxygen and nitrogen atoms in the ionosphere; also called the Northern Lights.
Permafrost A layer of soil beneath the earth's surface that remains frozen throughout the year.
Photodissociation The splitting of a molecule by a photon.
SCATTERED The amount of sky cover for a cloud layer between 3/8ths and 4/8ths, based on the summation layer amount for that layer.
Because the immediate surface (lower Boundary Layer) cools much more rapidly during these conditions than the air just above (upper Boundary Layer), a temperature inversion can be created overnight, but typically erodes quickly after sunrise.
Most often applied when such clouds are moving rapidly beneath a layer of nimbostratus.
caliche Also called hardpan; an opaque, reddish-brown-to-white calcareous material, which occurs in layers near the surface of stony soils in arid and semiarid areas. Calvin cycle The incorporation of CO2 into glucose by enzymatic reactions.
Atmospheric Boundary LayerSame as Boundary Layer - in general, a layer of air adjacent to a bounding surface.
KDEP: Smoke Layer.
KLYR: Smoke Layer Aloft.
KOCTY: Smoke Over City.
"L"
LFC: Level Of Free Convection.
LLWS: Low Level Wind Shear.
LLGT, LTNG: Lightning.
LGTCC: Lightning Cloud To Cloud.
LGTCCCG: Lightning Cloud To Cloud, Cloud To Ground.
In day-to-day meteorology, the temperature of the lowest layer of the atmosphere is measured at a height of 1.25 m (about 4 feet) above local ground level.
stratus (unbroken layer of cloud), nimbostratus (dark, unbroken layer, rain cloud)
cumulus (puffy, irregular clouds), stratocumulus (cumulus clouds arranged in a broad layer)
clouds of vertical development ...
Elevated Convection - Convection occurring within an elevated layer, i.e., a layer in which the lowest portion is based above the earth's surface. Elevated convection often occurs when air near the ground is relatively cool and stable, e.g.
Clouds can be categorized into two general groups: cumulus clouds (tall, cotton ball) and stratus clouds (layered); these can be divided even further to 4 sub-groups describing altitude: 20, ...
They are produced by the interaction of a saturated stable air layer, usually an inversion, and a pattern of vertical wind shear, ...
Tropopause The boundary layer between the troposphere and stratosphere, where an abrupt change in temperature lapse rate usually occurs.
temperature inversion- an atmospheric condition in which a layer of warm air, usually from a high pressure system, moves over a colder layer, preventing it from rising or dispersing.
The most common thickness used is for the 1000-500mb layer. Forecasters also look at other thickness layers such as 1000-850 mb layer (sometimes called low level thickness). Thicknesses are measure in decameters (1 decameter=10 meters).
CAP Composed of a layer of warmer, dryer air aloft which may suppress or delay the development of thunderstorms.
Hypsometric Equation - An equation relating the vertical distance between two isobaric surfaces (constant pressure levels) to the layer's mean (virtual) temperature.
The most common type is an upper-level cold low with circulation extending to the surface layer and maximum sustained winds generally occurring at a radius of about 100 miles or more from the center.
Radiational cooling produces condensation in the air layers immediately above the ground. If only a thin layer of moist air is present, Dew will form; if a thicker layer is present, radiation fog (and dew) will form.
STRATUS CLOUDS - Widespread layer clouds formed when a layer of air rises slowly. Usually smooth conditions are associated with stratus clouds.
STROBE - A blinking light mounted on an aircraft to improve visibility.
Ceiling - The height ascribed to the lowest layer of clouds or obscuring phenomena when the sky is reported as broken, overcast, ...
CEILING: The height of the lowest layer of clouds, when the sky is broken or overcast.
CHANCE: A 30, 40 or 50 percent chance of occurrence of measurable precipitation.
CHINOOK WIND: A foehn wind on the east side of the Rocky Mountains.
 See also: Surface, Air, Temperature, Water, Cloud
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