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هواشناسی گرمي
وبگاه اختصاصی آب و هواشناسی گرمي
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How models create forecastsThe basic idea of numerical weather prediction is to sample the state of the fluid at a given time and use the equations of fluid dynamics and thermodynamics to estimate the state of the fluid at some time in the future. The main inputs from country-based weather services are surface observations from automated weather stations at ground level over land and from weather buoys at sea. The World Meteorological Organization acts to standardize the instrumentation, observing practices and timing of these observations worldwide. Stations either report hourly in METAR reports,[34] or every six hours in SYNOP reports.[35] Sites launch radiosondes, which rise through the depth of the troposphere and well into the stratosphere.[36] Data from weather satellites are used in areas where traditional data sources are not available.[37][38][39] Compared with similar data from radiosondes, the satellite data has the advantage of global coverage, however at a lower accuracy and resolution.[40] Meteorological radar provide information on precipitation location and intensity, which can be used to estimate precipitation accumulations over time.[41] Additionally, if a pulse Doppler weather radar is used then wind speed and direction can be determined.
موضوعات مرتبط: اخبار و تصاویر هواشناسی گرمی، مطالب علمی برچسبها: How models create forecasts, پیش بینی, وضع هوا, گرمی [ چهارشنبه بیستم اسفند ۱۳۹۹ ] [ 7:13 ] [ هوانگار گرمي ]
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