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Etymologies
from Wiktionary, Creative Commons Attribution/Share-Alike License
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Examples
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I checked, by eye, for an negative methane spike remotely similar to that of Younger Dryas, about -180 ppbv.
RealClimate 2009
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The 8.2 kya event shows up with around -20 ppbv and no earlier excursions appear to be more than +-70 ppbv per sampling interval.
RealClimate 2009
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A concentration of 1 ppbv means that for every billion molecules of gas in the measured volume, one of them is a carbon monoxide molecule.
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Concentrations of carbon monoxide are expressed in parts per billion by volume (ppbv).
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I checked, by eye, for an negative methane spike remotely similar to that of Younger Dryas, about -180 ppbv.
RealClimate 2009
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The atmospheric concentration of CH4 has increased from 700 parts per billion by volume (ppbv) to 1,720 ppbv, and is increasing at the rate of 10 ppbv / yr (0.6 percent / yr).
unknown title 2009
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The 8.2 kya event shows up with around -20 ppbv and no earlier excursions appear to be more than +-70 ppbv per sampling interval.
RealClimate 2009
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For comparison, they also ran the models with a chlorine level of 3.5 ppbv, which was the level in the stratosphere by the late 1990s. ...
GREENIE WATCH 2008
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For comparison, they also ran the models with a chlorine level of 3.5 ppbv, which was the level in the stratosphere by the late 1990s. ...
Latest Articles 2008
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Similarly, the concentration of N2O has increased from 275 ppbv to 312 ppbv and is increasing at the rate of about 0.8 ppbv / yr (0.25 percent / yr) (Bruce, Lee, and Haites
unknown title 2009
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