Birdwatch Note Rating
2025-07-29 15:57:41 UTC - HELPFUL
Rated by Participant: 0F2CC0BE6590BC6CD1A0CC42DFF42E6F51D149DCBD713FDCD6C0EAE94C3A6692
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