Sentence examples for ppmv in from inspiring English sources
In the 1950s climate scientists began to track the annual increase in average global carbon dioxide concentrations in the atmosphere, which rose from approximately 316 parts per million by volume (ppmv) in 1959 to 390 ppmv a half century later.
The average worldwide tropospheric mixing ratio of methane has increased by 11% from 1.52 parts per million by volume (ppmv) in January 1978 to 1.684 ppmv in September 1987, for an increment of 0.016 ± 0.001 ppmv per year.
For the same air preheating the NO emissions would be of approximately 1000 ppmv in flame combustion mode.
The optimum design was validated by measuring the apparent quantum yield of the oxidation of toluene (7 ppmv) in a humidified air stream using immobilized TiO2 (Degussa P25).
A positive bias of about 0.2 0.4 ppmv in the MIPAS data in the 35 40 km region has also been found.
The monitoring of carbon dioxide (CO2) in anthrosol showed CO2 concentrations ([CO2]) up to 10,000 ppmv in dependence on external conditions.
Today, a full-scale engine test campaign has been completed, during which measured NOx emissions were as low as 1 ppmvd in the 90 100% load range.
While not necessarily viewed as formal medical providers, training PPMVs to conduct some basic health consultations, along with strong referral skills, may help to provide better care for lower SES populations and those living farther away from a health facility who are more likely to use PPMVs in lieu of formal medical care.
In this work, experiments are performed on a model flue-gas (32 m3·havingaving a SO2 concentration in the range 500 2000 ppmv, treated in a packed column filled with a structured packing (Mellapak 250X®) at 1 atm and 25 °C, with liquid-to-gas ratio between 1.06 and 3.44 kg·kg−1.
For example, 755 ppmv NOx in the vitiated stream reduced the ignition delay time of a stoichiometric propane/air mixture by 75% at 875 K.
The results vary considerably, from an additional 20 ppmV CO2 in the atmosphere by 2100 to over 200 additional ppmV.
