GLAPS Model: Surface Pressure and Wind Speed - Real-time
The Global Analysis and Prediction System, GLAPS, produces maps for several weather parameters over a large global domain. There are seven GLAPS products available for Science On a Sphere®. It is important for meteorologists to know the current conditions, not only in their local area, but also globally. A computer model is used to create a first guess as to what the map should look like, and then observations are added to enhance the map. The observations come from Doppler radars, satellites, wind and temperature profilers, radiometric profilers, as well as aircraft. GLAPS is such a powerful tool because of its ability to consolidate observations from so many different sources. The GLAPS datasets are available in real-time, updating hourly, and include the data for the past week.
Every real-time GLAPS dataset all updates hourly. GLAPS SFC Pressure + Wind + Windspeed is an image of the wind speed in knots at the surface with wind barbs and the surface pressure contours overlaid. Contour lines show lines of equal pressure. The color variation shows wind speed in knots (1 knot = 1.15 mph). Red/yellow represent high wind speeds and blue/purple show low. Wind barbs show rotating winds as the air moves quickly in and up around an area of low pressure (L), notice the opposite around the areas of high pressure (H).
- Contour lines show lines of equal pressure at the surface
- The color variation shows wind speed in knots (1 knot = 1.15 mph)
- Red/yellow represent high wind speeds and blue/purple low