Global Information Lookup Global Information

Geopotential information


Geopotential is the potential of the Earth's gravity field. For convenience it is often defined as the negative of the potential energy per unit mass, so that the gravity vector is obtained as the gradient of the geopotential, without the negation. In addition to the actual potential (the geopotential), a hypothetical normal potential and their difference, the disturbing potential, can also be defined.

and 27 Related for: Geopotential information

Request time (Page generated in 0.5394 seconds.)

Geopotential

Last Update:

Geopotential is the potential of the Earth's gravity field. For convenience it is often defined as the negative of the potential energy per unit mass,...

Word Count : 1379

Geopotential height

Last Update:

Geopotential height or geopotential altitude is a vertical coordinate referenced to Earth's mean sea level (assumed zero geopotential) that represents...

Word Count : 934

Earth Gravitational Model

Last Update:

The Earth Gravitational Models (EGM) are a series of geopotential models of the Earth published by the National Geospatial-Intelligence Agency (NGA). They...

Word Count : 1292

Geopotential model

Last Update:

geodesy, a geopotential model is the theoretical analysis of measuring and calculating the effects of Earth's gravitational field (the geopotential). Newton's...

Word Count : 2153

Vertical position

Last Update:

geopotential numbers have units of m2/s2. Normalization by a constant nominal gravity value (units of m/s2) yields units of metre, as in geopotential...

Word Count : 822

International Standard Atmosphere

Last Update:

with an assumed linear distribution of absolute temperature T against geopotential altitude h. The other two values (pressure P and density ρ) are computed...

Word Count : 1551

Tropical cyclone

Last Update:

centers. In meteorology, geopotential heights are used when creating forecasts and analyzing pressure systems. Geopotential heights represent the estimate...

Word Count : 20725

Gravitational potential

Last Update:

polynomials in physics Standard gravitational parameter (GM) Geoid Geopotential Geopotential model Solivérez, C.E. (2016). Electrostatics and magnetostatics...

Word Count : 2578

Barometric formula

Last Update:

table below) (K/m) in ISA h {\displaystyle h} = height above sea level (geopotential meters) R ∗ {\displaystyle R^{*}} = universal gas constant 8.3144598 N·m/(mol·K)...

Word Count : 1308

Geoid

Last Update:

orthometric heights, geopotential heights, and dynamic heights (see Geodesy#Heights). All points on a geoid surface have the same geopotential (the sum of gravitational...

Word Count : 3056

Thermal wind

Last Update:

geostrophic wind at a given pressure level flows along geopotential height contours on a map, and the geopotential thickness of a pressure layer is proportional...

Word Count : 1450

Elevation

Last Update:

used when referring to points on the Earth's surface, while altitude or geopotential height is used for points above the surface, such as an aircraft in flight...

Word Count : 573

Decametre

Last Update:

frequently than other units of length. One practical use is for altitude of geopotential heights in meteorology. The volumetric form cubic decametre is convenient...

Word Count : 274

North American Vertical Datum of 1988

Last Update:

set to be replaced in 2025 with a new geometric reference frame and geopotential datum, based on GPS and gravimetric geoid models. NAVD 88 was established...

Word Count : 732

Reference atmospheric model

Last Update:

transformation from real geometric altitude z to an abstraction called "geopotential altitude" h, defined: h = r e z r e + z {\displaystyle h={\frac {r_{e}z}{r_{e}+z}}}...

Word Count : 1367

Weather forecasting

Last Update:

An example of 500 mbar geopotential height and absolute vorticity prediction from a numerical weather prediction model...

Word Count : 7726

International System of Units

Last Update:

associated with the unit." Instances include: "watt-peak" and "watt RMS"; "geopotential metre" and "vertical metre"; "standard cubic metre"; "atomic second"...

Word Count : 5847

Gravity of Earth

Last Update:

and shape used to model the Earth for geodesy Geopotential – Energy related to Earth's gravity Geopotential model – Theoretical description of Earth's gravimetric...

Word Count : 3794

Atmospheric model

Last Update:

atmosphere can be simulated using the 500 mb (15 inHg) and 1,000 mb (30 inHg) geopotential height surfaces and the average thermal wind between them. Barotropic...

Word Count : 5640

Physical geodesy

Last Update:

physical properties of Earth's gravity and its potential field (the geopotential), with a view to their application in geodesy. Traditional geodetic instruments...

Word Count : 1708

World Meteorological Organization

Last Update:

for visibility. Metres (m) for cloud height. Standard geopotential metre (m') for geopotential height. Kilograms per square metre (kg/m2) for snow water...

Word Count : 2427

Geodesy

Last Update:

surface. Height systems in use are: Orthometric heights Dynamic heights Geopotential heights Normal heights Each system has its advantages and disadvantages...

Word Count : 4184

Map

Last Update:

level—or by maps of baric topography on which altitudes (more precisely geopotentials) of the main isobaric surfaces (for example, 900, 800, and 700 millibars)...

Word Count : 4295

Sea level

Last Update:

records on EarthPages displaying short descriptions of redirect targets Geopotential height – Type of altitude above mean sea level Height above average terrain –...

Word Count : 4340

Dynamic height

Last Update:

height or normal height. It can be computed by dividing the location's geopotential number by the normal gravity at 45 degree latitude and zero height (a...

Word Count : 259

Spheroid

Last Update:

referring to truncated spherical harmonic expansions of the Earth's gravity geopotential model). The equation of a tri-axial ellipsoid centred at the origin with...

Word Count : 1926

Levelling

Last Update:

covering regions or continents it is not. Instead of height differences, geopotential differences do close around loops: ∑ i = 0 n Δ h i g i , {\displaystyle...

Word Count : 2175

PDF Search Engine © AllGlobal.net