enow.com Web Search

Search results

  1. Results from the WOW.Com Content Network
  2. Space weather - Wikipedia

    en.wikipedia.org/wiki/Space_weather

    Space weather models are simulations of the space weather environment. Models use sets of mathematical equations to describe physical processes. These models take a limited data set and attempt to describe all or part of the space weather environment in or to predict how weather evolves over time. Early models were heuristic; i.e., they did not ...

  3. Ionosphere - Wikipedia

    en.wikipedia.org/wiki/Ionosphere

    An ionospheric model is a mathematical description of the ionosphere as a function of location, altitude, day of year, phase of the sunspot cycle and geomagnetic activity. Geophysically, the state of the ionospheric plasma may be described by four parameters: electron density, electron and ion temperature and, since several species of ions are ...

  4. International Reference Ionosphere - Wikipedia

    en.wikipedia.org/wiki/International_Reference...

    It is the international standard empirical model for the terrestrial ionosphere since 1999. For a specified geographic location, time, and date, IRI provides average monthly values for electron density, electron temperature and ion temperature, and the molecular composition of the ions in the range of altitudes from 50 km to 2000 km. [ 1 ] The ...

  5. Numerical weather prediction - Wikipedia

    en.wikipedia.org/wiki/Numerical_weather_prediction

    The output of forecast models based on atmospheric dynamics is unable to resolve some details of the weather near the Earth's surface. As such, a statistical relationship between the output of a numerical weather model and the ensuing conditions at the ground was developed in the 1970s and 1980s, known as model output statistics (MOS).

  6. Atmospheric model - Wikipedia

    en.wikipedia.org/wiki/Atmospheric_model

    The global models are run at varying times into the future. The UKMET Unified model is run six days into the future, [41] the European Centre for Medium-Range Weather Forecasts model is run out to 10 days into the future, [42] while the Global Forecast System model run by the Environmental Modeling Center is run 16 days into the future. [43]

  7. Upper-atmospheric models - Wikipedia

    en.wikipedia.org/wiki/Upper-atmospheric_models

    A jet stream perturbation model is employed by Weather Logistics UK, [1] which simulates the diversion of the air streams in the upper atmosphere.North Atlantic air flow modelling is simulated by combining a monthly jet stream climatology input calculated at 20 to 30°W, with different blocking high patterns.

  8. Weather forecasting - Wikipedia

    en.wikipedia.org/wiki/Weather_forecasting

    The global models are run at varying times into the future. The Met Office's Unified Model is run six days into the future, [55] the European Centre for Medium-Range Weather Forecasts model is run out to 10 days into the future, [56] while the Global Forecast System model run by the Environmental Modeling Center is run 16 days into the future. [57]

  9. Model for Prediction Across Scales - Wikipedia

    en.wikipedia.org/wiki/Model_for_Prediction...

    The Model for Prediction Across Scales (MPAS) is an Earth system modeling software that integrates atmospheric, oceanographic, and cryospheric modeling across scales from regional to planetary. It includes climate and weather modeling and simulations that were used initially by researchers in 2013. [ 1 ]