katabatic
adjective
kat·a·bat·ic ˌka-tə-ˈba-tik 
: relating to or being a wind produced by the flow of cold dense air down a slope (as of a mountain or glacier) in an area subject to radiational cooling
Example Sentences
Recent Examples on the Web The Santa Ana winds in California are another example of a katabatic wind, but these vary slightly in terms of temperature and latitude. 
Allison Chinchar, CNN, 24 Apr. 2022 The katabatic wind probably drifted the snow and allowed an extra load to build up slowly. Jennifer Ouellette, Ars Technica, 31 Mar. 2022 The air travels west and goes screaming down the mountains, turning into katabatic winds, compressed and warmed by the lower altitude. Wired, 29 Oct. 2019 Some experts think the fire is likely a preview of the dangerous conditions Southern California will face later this week, as a heat wave combines with katabatic winds. Wes Siler, Outside Online, 23 Oct. 2019 One way to think of katabatic winds is to picture them as gargantuan cataracts of air moving over the ice sheets. Barry Lopez, Harper's magazine, 10 Jan. 2019
Allison Chinchar, CNN, 24 Apr. 2022 The katabatic wind probably drifted the snow and allowed an extra load to build up slowly. Jennifer Ouellette, Ars Technica, 31 Mar. 2022 The air travels west and goes screaming down the mountains, turning into katabatic winds, compressed and warmed by the lower altitude. Wired, 29 Oct. 2019 Some experts think the fire is likely a preview of the dangerous conditions Southern California will face later this week, as a heat wave combines with katabatic winds. Wes Siler, Outside Online, 23 Oct. 2019 One way to think of katabatic winds is to picture them as gargantuan cataracts of air moving over the ice sheets. Barry Lopez, Harper's magazine, 10 Jan. 2019 Word History
Etymology
Greek katabatos descending, verbal of katabainein to go down, from kata- cata- + bainein to go — more at come
First Known Use
1918, in the meaning defined above