- ensemble forecast
- 系集预报
Atmospheric Sciences (English-Chinese) dictionary. 2014.
ensemble forecast
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Ensemble forecasting — is a numerical prediction method that is used to attempt to generate a representative sample of the possible future states of a dynamical system. Multiple numerical predictions are conducted using slightly different initial conditions that are… … Wikipedia
Ensemble Kalman filter — The ensemble Kalman filter (EnKF) is a recursive filter suitable for problems with a large number of variables, such as discretizations of partial differential equations in geophysical models. The EnKF originated as a version of the Kalman filter … Wikipedia
Tropical cyclone forecast model — [ National Hurricane Center (NHC)] A tropical cyclone forecast model is a computer program that uses meteorological data to forecast the motion and intensity of tropical cyclones. Such models utilize powerful supercomputers with sophisticated… … Wikipedia
Climate ensemble — In physics, a statistical ensemble is a large set of (mental) copies of a system, considered all at once; each copy of the system representing a different possible detailed realisation of the system, consistent with the system s observed… … Wikipedia
Numerical weather prediction — Weather models use systems of differential equations based on the laws of … Wikipedia
Hydrometeorological Prediction Center — The Hydrometeorological Prediction Center (HPC) is one of nine Service Centers under the umbrella of the National Centers for Environmental Prediction (NCEP), operating under the aegis of the National Weather Service, which in turn is part of the … Wikipedia
Spaghetti Plots — are a method of viewing data from an ensemble forecast.A meteorological variable e.g. pressure, temperature is drawn on a chart for a number of slightly different model runs from an ensemble. The model can then be stepped forward in time and the… … Wikipedia
Singular value decomposition — Visualization of the SVD of a 2 dimensional, real shearing matrix M. First, we see the unit disc in blue together with the two canonical unit vectors. We then see the action of M, which distorts the disk to an ellipse. The SVD decomposes M into… … Wikipedia
Atmospheric model — A 96 hour forecast of 850 mbar geopotential height and temperature from the Global Forecast System An atmospheric model is a mathematical model constructed around the full set of primitive dynamical equations which govern atmospheric motions. It… … Wikipedia
Weather forecasting — weather forecaster redirects here. For other uses, see Weatherman (disambiguation). Forecast of surface pressures five days into the future for the north Pacific, North America, and north Atlantic ocean. Weather forecasting is the application of… … Wikipedia
Data assimilation — Applications of data assimilation arise in many fields of geosciences, perhaps most importantly in weather forecasting and hydrology. Data assimilation proceeds by analysis cycles. In each analysis cycle, observations of the current (and possibly … Wikipedia
