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Nexrad radar mosaic showing bird migration, 8 May 2009. It’s true. Weather radar images show where radar beams have been “reflected” as they sweep the atmosphere. They’re useful for showing weather conditions because the beams are reflected by precipitation and the water vapor in clouds, but they can also be reflected by swarming masses ...
- More Than Weather
- …But, How Do We Know These Are Birds?
- We Need Your Help!
Radar, an acronym for radio detection and ranging, was originally developed to detect enemy aircraft in World War II. As the decades have passed, it has become a valuable tool for studying all kinds of objects in the atmosphere. One of radar’s most common applications is the detection of meteorological events—especially thunderstorms, tornados, and...
Equipped with computing power and advanced radar technology, we can begin to provide detailed data on avian activity in the atmosphere
The BirdCast team, along with other radar ornithologists, uses a broad array of tools to make sense of a treasure trove of information collected by radars about birds, such as migration density, flight speed, and direction. Our data are not complete, though. Many advances in radar technology have aided in our abilities to differentiate birds from r...
Sep 24, 2014 · The radio waves sent out by doppler radar bounce off raindrops and birds alike and return a signal to the receiver, writes Hannah Waters on her Scientific American blog. Birds aren’t the only...
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May 8, 2009 · When the radar receives this return energy, the radar has a location of the target relative to the radar as well as a degree of reflectivity in terms of how much scattered energy returns to the radar (base reflectivity image).
Dec 23, 2018 · However, the range of this effect is <200 ft, so a weather radar can't be relied on to prevent bird strikes. It's also not well-studied and not verified across a wide range of species. The beam might also completely miss the birds due to scanning. So it's not a reliable bird deterrent.
May 27, 2015 · How to Use Radar to Track Birds. Radars may be designed to track storms, but flocks of can birds show up too. Learn to use that to your advantage. A two-million-strong flock of songbirds show up on a radar over the Spartanburg Airport of Greenville, South Carolina. Photo: Jonathan Blair/Corbis. Words by Tessa Stuart. Published May 27, 2015.
The New Migration Science. Fall migration will bring 4 billion birds into the skies over the United States. That’s not a guess—it’s hard data, gleaned from the first-ever national bird count using weather radar. Cornell Lab of Ornithology scientists analyzed data from 143 weather radar stations from 2013 to 2017 to provide the first large ...
