![]() If the storm is a good distance away from BMX, due to the fact that the radar beam is straight and doesn't follow the Earth's surface, the lowest elevation scan from BMX may only be able to "see" into the middle portion of the storm. The example at a National Weather Service website describes it well,Ī storm between the Birmingham (BMX) and Maxwell AFB (MXX) radars (see image below). One of the fundamental concepts that we discuss is how curvature of the Earth impacts rainfall detection. I also teach a radar and mesoscale meteorology course at the University of Georgia. Some of my earliest graduate work at Florida State University developed weather radar algorithms to track hurricanes. Weather radar: I cut my teeth as a radar meteorologist. This general circulation model is directly tied to global patterns of high-low pressure, jet streams, and weather systems. Surface winds in the polar cell are easterly (polar easterlies). At the surface air diverges outward from the polar highs. Once over the poles, the air sinks, forming the polar highs. (3) Polar cell - Air rises, diverges, and travels toward the poles. ![]() In this cell the air flows poleward and eastward near the surface and equatorward and westward at higher levels. (2) Ferrel cell - A mid-latitude mean atmospheric circulation cell for weather named by Ferrel in the 19th century. This forms a convection cell that dominates tropical and sub-tropical climates. (1) Hadley cell - Low latitude air movement toward the equator that with heating, rises vertically, with poleward movement in the upper atmosphere. Instead of one large circulation between the poles and the equator, there are three circulations. Since the earth rotates, the axis is tilted, and there is more land mass in the northern hemisphere than in the southern hemisphere, the actual global pattern is much more complicated. ![]() In reality, it is a bit more complex as described on NOAA website,
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