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According to the USGS and NOAA, a 1km³ cumulus cloud would weigh about 2.21 billion pounds, or about 1,105 tons (US). The same volume of dry air weighs about 2.22 billion pounds, which is why clouds float. Because it is less dense than air, in truth, it doesn't "weigh" anything. It has volume. If you sucked all the water vapor out of the air and put it in a bucket, though, using the below chart as a guide and the fact that water is 1kg per liter, and one liter of water is 0.1 cubic meters, you'd have 12,900,000,000 liters of water, which is 12.9 trillion kg. (It's enough to cover the earth's 510,072,000 km² surface with about 25mm of water. Because the earth's average rain fall is about 1 meter, you can figure that all of this water vapor is recycled every nine or ten days.) So, to convert that metric to US tons and answer your question, all of that means that there is approximately more than 14.2 billion US tons of water vapor in the atmosphere.

Water sourceWater volume, in cubic milesWater volume, in cubic kilometersPercent of total freshwaterPercent of total waterAtmosphere3,09412,9000.04%0.001%Total global fresh water8,404,00035,030,000100%2.5%Total global water332,500,0001,386,000,000--100%Source: Gleick, P. H., 1996: Water resources. In Encyclopedia of Climate and Weather, ed. by S. H. Schneider, Oxford University Press, New York, vol. 2, pp.817-823.

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Q: How much water vapor is in the atmosphere in tons?

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2,328.3 pounds or 1.16 tons.

1.7 tons.

About 47,073,905 tons, depending on the salt concentration.

100,000 metric tons (tonnes) is 110,230 tons.

850 kilograms is 0.94 tons.

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about 10 tons

Total mass of the atmosphere is about 5.5 quadrillion tons, of which oxygen is close to 20%, or 1.1 quadrillion tons. 1.1e+15 tons.

Earth's atmosphere actually decreases you weight, due to the minute effects of buoyancy with the air. Even though there are tons and tons of atmosphere on us, the preasure is balanced by the internal pressure within our bodies, just like with fish in deep water that have tons and tons of water pressing in on them. The average different that the air has on us is about 40-55 grams (or .09 - .12 lbs).

I have no clue. How much do you put in the atmosphere annually?

21%, or 1.1 quadrillion (1.1e+15) tons.

At room temperature and 1 atmosphere, the mass of one cubic metre of water is 0.998 207 1 tons.

105,000 tons

150 tons=Titanic sinks an inch, so 45,000 tons of water. At 12:45, she had 10,000 Tons of Water in her. At 1:35, 29,000 Tons, and at 2:20, 35,000-45,000 Tons of Water.

Around 21%, or 1.1 quadrillion (1.1e+15) tons.

52,310 tons

5,100,000,000,000,000 tons

The oceans depths (tons of pressure) are pretty much the only place you will find water at over 100C. Anywhere else, and its water vapor!

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