Birdwatch Note Rating
2025-07-30 00:05:00 UTC - HELPFUL
Rated by Participant: F80F66932BDCABFBD9AE373C765FE93C704C1E9637BC48291215FEE018AE235A
Participant Details
Original Note:
This is an example of anomalous propagation, specifically radar beam ducting due to superrefraction. High heat and humidity reduce the atmospheric refractive index with height, causing the radar beam to bend downward and reflect off the ground, producing false echoes. https://www.noaa.gov/jetstream/anomalous-propagation https://www.noaa.gov/jetstream/radar-beams https://www.meteor.iastate.edu/~jdduda/portfolio/How%20to%20read%20and%20interpret%20weather%20radar.pdf https://radarscope.zendesk.com/hc/en-us/articles/4416730029330-Ground-Clutter-and-Other-Stuff-What-You-Can-See-on-Radar-Other-Than-Rain https://www.meteor.iastate.edu/classes/mt432/lectures/ISURadarTalk_NWS_2013.pdf
All Note Details