Not exact matches
«There could be different reasons:
atmospheric changes in temperature or air
pressure, people suddenly moving or
not moving, or other sudden
changes,» says C. S. Unnikrishnan of Tata Institute of Fundamental Research
in Mumbai, India.
Engine timing could either be advanced or retarded slightly, but the system wasn't smart enough to take advantage of
changes in atmospheric pressure, fuel quality, octane rating or temperature.
Since emissions
in the last 40 years have been 3 times higher than
in the period from 1924 to 1963 and 30 times higher than 1844 to 1883 it is
not too hard to believe that the rapid growth
in atmospheric partial
pressure has forced such a
change in airborne fraction