Documents / Official release
This is a 2023 draft research paper by Richard M. Medina and Simon Brewer of the University of Utah and Sean M. Kirkpatrick of the Department of Defense, prepared for journal submission and released in full by AARO in 2025. It analyzes 98,724 NUFORC public sighting reports from 2001 to 2020 by county with a Bayesian model. It finds that more light pollution and tree canopy mean fewer sightings, while more air traffic and military area mean more. Cloud cover showed no relationship.
025 sightings would exhibit little to no spatial pattern, and are unlikely to follow a pattern that can be explained by first-order visibility indicators as our results show. Another question is, are there any temporal and/or geographic errors? These errors are possible, because some entries into this dataset are historical and presented from memory, not always in the first person. We attempt to limit this by using data from 2001-present, rather than using data that was retroactively added to the database, but that does not completely remove the issue. Also, by upscaling the data to the county level, the locational estimates are placed more firmly into a spatial aggregate that has a greater likelihood of being accurate. A final issue we consider is that these reported cases require knowledge of NUFORC and access to communications. The authors found the website and organization while searching for data. Some may find the website while searching for an organization to report to. Still, there is likely bias in who has knowledge of this resource, and since it is not widely advertised many people may not be aware of it. In all, we believe this dataset to be valuable, at least in the sense that either, this is where people are seeing things they can’t explain (or that they don’t want to explain with more logical explanations), or this is where people are thinking more about UAPs. Both of these are important and have physical/social implications. For questions 2 and 3, There are credibly identifiable patterns to these sightings, and these patterns relate to environmental and landscape characteristics. We use physical factors of light pollution, tree canopy, and average annual cloud cover, as well as airborne clutter factors of air traffic and military installations. These variables should work, generally, to represent both 1) the opportunity to see something and 2) the potential for something human constructed to be in the field of view. We have not considered satellites or drones, which are likely important factors, nor the fact that airplanes (and helicopters, etc.) do not only fly around their takeoff and landing locations. However, around these locations we use, aircraft are likely to be closer to the ground, more visible, and more frequently present. Using the military installation data, we hope to capture, not only aircraft, but also nighttime training activities that might use, for example, tracer rounds, drones, and other forms of illumination in relatively desolate areas. If we assume that the large majority of sightings in this dataset are actually representative of true sightings that people determined to be unidentified, then our results have interesting implications. Our model shows that the majority of sightings are in the western parts of the U.S. and in the very northeast. There are also some isolated counties throughout the rest of the country that warrant further investigation to identify which properties may generate relatively more UAP attention. These results consider all independent variables; however, cloud cover is not credible. Why clouds don’t seem to affect UAP sightings is a good question and may have something to do with the spatial distribution of sightings where high likelihood areas exist in coastal regions of the Pacific Northwest (relatively clouded), as well as desert regions of the Mountain West (relatively clear). All the other variable relationships are as expected and align with our initial hypotheses, that people report more sightings where they have a better view of the sky. The question now is why? This research begins to answer this question by considering how much human made airborne activity is occurring. The strong credible relationships with airPage determined to be Unclassified Reviewed by Chief of Staff, AARO IAW FY24 NDAA, Section 1841 (a)(1)(C) Date: 02/06/2025
Official release, from the nara collection. The PDF is mirrored here; the original link is above. 16 pages are in the text index: search them above, or from the library's search.