What does gfs weather mean?

The meteorological meaning of gfs is as follows:

Because there may be many things you can't understand in the published meteorological analysis articles, here are some simple terminology explanations to give you a preliminary understanding of numerical weather forecasting.

Numerical weather forecast: based on the actual data collected from the atmosphere by meteorological instruments (satellites, airplanes, ships, weather stations, sounding balloons, etc.). ), the initial field of the atmosphere is used as the numerical calculation of supercomputer under certain initial and boundary conditions.

At present, China's numerical weather forecast starts late, and generally adopts the forecasting model of European and American institutions to solve the equations of fluid mechanics and thermodynamics describing the weather evolution process and predict the atmospheric motion state and weather phenomena in a certain period in the future.

There are two mainstream institutions:

European Community: Also known as ECMWF, the full name is european centre for medium-range weather forecasts, which is a unique international weather forecast research and business organization in the world. It has the most advanced numerical weather forecasting system in the world so far. As China is not a member of the European Community, the forecast value currently provided to China is +240h( 10 day).

GFS: Global Forecast System is a global weather forecast system under the National Weather Service of the United States. It is the second largest numerical weather forecast system after ECMWF, and can provide a forecast value of +384 (16 days).

There are also commonly used numerical models of other mechanisms:

GEM: a numerical forecasting system in Canada. ICON: German numerical forecasting system.

Numerical weather forecast products:

500 hectopascal weather map: It is about the atmospheric situation map at a height of 5500 meters, mainly focusing on the ridge situation.

850HPA weather map: It is an atmospheric situation map about altitude 1500m, mainly focusing on pressure wind field and temperature advection.

Near-surface weather map: it is an atmospheric situation map with a height of 10m from the ground, mainly for near-surface weather systems.