• Source: Metric

Metric or metrical may refer to:




Measuring


Metric system, an internationally adopted decimal system of measurement
An adjective indicating relation to measurement in general, or a noun describing a specific type of measurement




Mathematics


In mathematics, metric may refer to one of two related, but distinct concepts:

A function which measures distance between two points in a metric space
A metric tensor, in differential geometry, which allows defining lengths of curves, angles, and distances in a manifold




Natural sciences


Metric tensor (general relativity), the fundamental object of study in general relativity, similar to the gravitational field in Newtonian physics
Senses related to measurement:
Metric system, an internationally adopted decimal system of measurement
Metric units, units related to a metric system
International System of Units, or Système International (SI), the most widely used metric system
METRIC, a model that uses Landsat satellite data to compute and map evapotranspiration (ET) in climatology/meteorology




Engineering and business


The word metric is often used to mean a descriptive statistic, indicator, or figure of merit used to describe or measure something quantitatively, including:

Performance indicator, a measure of an organization's activities and performance
Metrics (networking), the properties of a communication path used by a router to make routing decisions
Software metric, a measure of some property of a piece of software or its specifications
Reuse metrics, a quantitative indicator of an attribute for software reuse and reusability
Search engine optimization metrics, indicators of a website's organic search potential




Music


Alex Metric (born 1984), British musician, DJ and producer
Metric (band), a Canadian rock band founded in Toronto, Ontario




Other uses


Metre (poetry), the rhythmic structure of poetry
Font metrics, properties describing the overall shape of a font




See also


Meter (disambiguation)
Metrecal, a diet drink introduced in the 1960s
Metric conversion (disambiguation)
Metric dimension (disambiguation)
Metric gauge (disambiguation)
All pages with titles beginning with Metric
• Source: METRIC

METRIC (Mapping EvapoTranspiration at high Resolution with Internalized Calibration) is a computer model developed by the University of Idaho, that uses Landsat satellite data to compute and map evapotranspiration (ET). METRIC calculates ET as a residual of the surface energy balance, where ET is estimated by keeping account of total net short wave and long wave radiation at the vegetation or soil surface, the amount of heat conducted into soil, and the amount of heat convected into the air above the surface. The difference in these three terms represents the amount of energy absorbed during the conversion of liquid water to vapor, which is ET. METRIC expresses near-surface temperature gradients used in heat convection as indexed functions of radiometric surface temperature, thereby eliminating the need for absolutely accurate surface temperature and the need for air-temperature measurements.

The surface energy balance is internally calibrated using ground-based reference ET that is based on local weather or gridded weather data sets to reduce computational biases inherent to remote sensing-based energy balance. Slope and aspect functions and temperature lapsing are used for application to mountainous terrain. METRIC algorithms are designed for relatively routine application by trained engineers and other technical professionals who possess a familiarity with energy balance and basic radiation physics. The primary inputs for the model are short-wave and long-wave thermal images from a satellite e.g., Landsat and MODIS, a digital elevation model, and ground-based weather data measured within or near the area of interest. ET “maps” i.e., images via METRIC provide the means to quantify ET on a field-by-field basis in terms of both the rate and spatial distribution. The use of surface energy balance can detect reduced ET caused by water shortage.
In the decade since Idaho introduced METRIC, it has been adopted for use in Montana, California, New Mexico, Utah, Wyoming, Texas, Nebraska, Colorado, Nevada, and Oregon. The mapping method has enabled these states to negotiate Native American water rights; assess agriculture to urban water transfers; manage aquifer depletion, monitor water right compliance; and protect endangered species.




See also


SEBAL, uses the surface energy balance to estimate aspects of the hydrological cycle. SEBAL maps evapotranspiration, biomass growth, water deficit and soil moisture
BAITSSS, evapotranspiration (ET) computer model which determines water use, primarily in agriculture landscape, using remote sensing-based information




References



Allen, R.G., M. Tasumi and R. Trezza. 2007. Satellite-based energy balance for mapping evapotranspiration with internalized calibration (METRIC) – Model. ASCE J. Irrigation and Drainage Engineering 133(4):380-394.
Allen, R.G., M. Tasumi, A.T. Morse, R. Trezza, W. Kramber, I. Lorite and C.W. Robison. 2007. Satellite-based energy balance for mapping evapotranspiration with internalized calibration (METRIC) – Applications. ASCE J. Irrigation and Drainage Engineering 133(4):395-406.

Kata Kunci Pencarian:

• Derajat (suhu)
• Metrik perangkat lunak
• Kunci allen
• Riri Fitri Sari
• Proyeksi Mercator
• Universitas Nasional Sains Teknologi Pingtung
• Ton metrik
• Conor McGregor
• Kalori
• Universitas Brawijaya
• Metric
• Metric (band)
• Metric space
• Metric prefix
• Metric system
• METRIC
• Metric tensor
• Metric time
• Wasserstein metric
• Schwarzschild metric