BIRDTAM density profiles

First, select a weather radar location by clicking on the station on the map (left). In the figures in the right, the upper right panel shows the bird density (expressed as BIRDTAM values as used in aviation) for different height layers above sea level (200 meter height resolution). The lower right panel shows the vertically integrated bird density (expressed as the number of birds per square kilometer). Above the panels, you can switch between a detailed daily or a course weekly figure. The BIRDTAM value (shown in the colour scale) is logarithmic, increasing from 0-8. Bird speed and direction are plotted as wind barbs (each half flag represents 5 knots, each full flag 10 knots, each pennant (filled triangle) 50 knots; 1 knot = 1.9 km/hour; the angle of the barb shows the direction that the wind is blowing from). For more information on the use of this data see