- AR6 Climate Change 2021: The Physical Science Basis. IPCC, 2021, https://www.ipcc.ch/report/sixth-assessment-report-working-group-i/.
- “Attribution Archives”. Carbon Brief, https://www.carbonbrief.org/category/science/extreme-weather/attribution.
- Di Liberto, Tom. Reviewing Hurricane Harvey’s Catastrophic Rain and Flooding. NOAA, 15 July 2021, https://www.climate.gov/news-features/event-tracker/reviewing-hurricane-harveys-catastrophic-rain-and-flooding.
- Fox, Alex. “Deadly Floods Rip Apart Western Germany, Claiming at Least 165 Lives”. Smithsonian Magazine, July 2021, https://www.smithsonianmag.com/smart-news/deadly-floods-rip-apart-western-germany-180978227/.
- Herring, David. What Is an “Extreme Event”? Is There Evidence That Global Warming Has Caused or Contributed to Any Particular Extreme Event?. NOAA, 23 Oct. 2021, https://www.climate.gov/news-features/climate-qa/what-extreme-event-there-evidence-global-warming-has-caused-or-contributed.
- Mack, Eric. “Tropical Storm Imelda Brings Houston Area A Second 1,000-Year Flood In Just Two Years”. ForbeS, 19 Sept. 2019, https://www.forbes.com/sites/ericmack/2019/09/19/imelda-brings-texas-its-second-1000-year-flood-in-two-years/?sh=66cffb257f1e.
- Pitman, Andy, et al. “What Is a 1 in 100 Year Weather Event? And Why Do They Keep Happening so Often?”. The Conversation, 22 Mar. 2021, https://theconversation.com/what-is-a-1-in-100-year-weather-event-and-why-do-they-keep-happening-so-often-157589.
- Samenow, Jason. “Florence Was Another 1,000-Year Rain Event. Is This the New Normal as the Planet Warms?”. Washington Post, 18 Sept. 2018, https://www.washingtonpost.com/weather/2018/09/18/florence-was-another-year-rain-event-is-this-new-normal-planet-warms/.
- Shepherd, Marshall. “What Does A ‘100 Or 1000-Year Rain Event’ Actually Mean?”. Forbes, 5 Oct. 2015, https://www.forbes.com/sites/marshallshepherd/2015/10/05/what-does-a-100-or-1000-year-flood-actually-mean/?sh=2905a73d1fb4.
- Spring, Jake. “Once-in-50-Year Heat Waves Now Happening Every Decade -U.N. Climate Report”. Reuters, 9 Aug. 2021, https://www.reuters.com/business/environment/once-in-50-year-heat-waves-now-happening-every-decade-un-climate-report-2021-08-09/.
- Weather-Related Disasters Increase over Past 50 Years, Causing More Damage but Fewer Deaths. World Meteorological Organization, 31 Aug. 2021, https://public.wmo.int/en/media/press-release/weather-related-disasters-increase-over-past-50-years-causing-more-damage-fewer.
- Winter, Emery. “Yes, Rare Extreme Weather Events Are Happening More Frequently”. Verify This, 8 Sept. 2021, https://www.verifythis.com/article/news/verify/extreme-weather-verify/extreme-weather-events-100-year-floods-storms-wildfires-more-frequent-often/536-3352b5ca-3b72-4215-8421-194dd761f40a.
- Woo, Ryan, and Stella Qiu. “‘Once in a 1,000 Years’ Flood Hits China, Killing at Least 25”. Reuters, Beijing, 21 July 2021, https://www.theweathernetwork.com/ca/news/article/catastrophic-rain-flooding-hits-china.