Climate scientists also distinguish atmospheric rivers from other kinds of storms by the amount of water vapor they carry.

Source: https://indianexpress.com/article/world/climate-change/climate-change-shaping-california-winter-storms-8360497/

Combined with our detection of water vapor, the inner disk is a very exciting place,” said co-author Rens Waters of Radboud University in The Netherlands.

Source: https://www.digitaltrends.com/space/webb-protoplanetary-disk-water-vapor/

For the duration of the flight, NASA will observe how the spacecraft handles the air supply, removing carbon dioxide and water vapor as the astronauts breathe, especially during periods when they exercise.

Source: https://mashable.com/article/nasa-artemis-2-astronauts-announced

If you google around, you'll see that the Tongan eruption was exactly that--few sulfur aerosols, lots of water vapor.

Source: https://news.slashdot.org/story/23/08/22/2324215/zero-degree-line-rises-to-record-height-as-heatwave-continues-in-europe?utm_source=rss1.0mainlinkanon&utm_medium=feed

Its 7.7-liter inline-6 engine has been modified to accept hydrogen instead of diesel fuel, with the only resulting emissions being water vapor from the tailpipe.

Source: https://jalopnik.com/mercedes-benz-hydrogen-unimog-combustion-engine-1851112816

Previous research has already unmasked Enceladus as a surprisingly dynamic world with geysers spewing water vapor and complex organic molecules into space.

Source: https://www.zmescience.com/space/alien-life-space/a-poison-spray-suggests-there-could-be-life-on-enceladus/

The team modeled what would happen to those eight telescope subjects as the globe heats up, eventually suggesting we'll see an increase in what's known as specific humidity and precipitable water vapor in the coming years.

Source: https://www.cnet.com/science/climate/features/how-climate-change-could-take-the-stars-away-from-us/

The waste product: water vapor.

Source: https://www.journal-advocate.com/2023/09/14/hydrogen-fuel-cell-cars-are-here-but-good-luck-trying-to-fill-one-up/

The water vapor also contained other elements that can deplete ozone like bromine and iodine.

Source: https://indianexpress.com/article/upsc-current-affairs/upsc-essentials/upsc-essentials-weekly-news-express-global-hunger-index-periodic-labour-force-survey-prelims-2024-and-more-8985267/

The water vapor is expected to stay elevated in the stratosphere for a period of several years.

Source: https://phys.org/news/2023-11-massive-eruption-stratosphere-chemistry-dynamics.html

When the storm reaches cooler regions and makes landfall, the water vapor cools and turns into rain and sometimes even snow, according to the US National Oceanic and Atmospheric Administration.

Source: https://www.buzzfeednews.com/article/alexalee1/california-flood-atmospheric-river-abortion-pill-french