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en.wikipedia.org/wiki/Water_vapor

When water vapor is used as a lifting gas for use by a thermal airship the water vapor is heated to form steam so that its vapor ...

www.ncdc.noaa.gov/monitoring-references/faq/greenhouse-gases.php?section=watervapor

Water Vapor is the most abundant greenhouse gas in the atmosphere, which is why it is addressed here first. However, changes in its concentration is also ...

www.vsgc.odu.edu/src/Conf09/UnderGrad%20Papers/Ojo%20-%20Paper.pdf

Because water by definition is a liquid, when used in a direct context, the gas phase of water is referred to as water vapor. Water vapor is not visible, therefore.

www.acs.org/content/acs/en/climatescience/climatesciencenarratives/its-water-vapor-not-the-co2.html

Water vapor is the most important greenhouse gas. It controls ... It's true that water vapor is the largest contributor to the Earth's greenhouse effect. On average, it ...

www.skepticalscience.com/water-vapor-greenhouse-gas.htm

So skeptics are right in saying that water vapor is the dominant greenhouse gas. What they don't mention is that the water vapor feedback loop actually makes ...

www.nasa.gov/topics/earth/features/vapor_warming.html

Nov 17, 2008 ... The distribution of atmospheric water vapor, a significant greenhouse gas, varies across the globe. During the summer and fall of 2005, this ...

www.weatherquestions.com/What_is_water_vapor.htm

Nov 27, 2010 ... Water vapor is also the Earth's most important greenhouse gas, accounting for about 90% of the Earth's natural greenhouse effect, which helps ...

www.planet-science.com/categories/under-11s/chemistry-chaos/2012/10/is-water-a-liquid,-solid-gas.aspx

What does water look like? Is water always a liquid? After all, you can run a bath from a tap and drink water from a glass. What about on a hot day? You don't ...

www.madsci.org/posts/archives/2002-04/1018624412.Ch.r.html

Apr 11, 2002 ... Seriously, in science and engineering "steam" refers to water in its vapor state. You boil liquid water, the resulting vapor is "steam." Having said ...