If, however, the product distribution is changing over time as RO2 reactive fate changes, then mass yields could appear to decrease as an artifact of a shift from early high molecular weight products to later lower molecular weight products.
That is easier said than done, particularly when the model is changing over time.
What really matters is how the temperature is changing over long periods of time.
What we're interested in is whether the global average is changing over a longer period.
A continuous data set is considered vital to understanding how the earth's climate is changing over time.
Equally, video quality evaluation techniques are not designed to evaluate instantaneous quality where the quality is changing over time.
Through her measurements, Leavens was able to calculate how much carbon each area of the forest contained and how that amount is changing over time.
Second, high-quality observations are needed so we can assess whether the type of event (such as flood, heat wave, drought, storm, etc). is changing over time.
Instead take the average of the last seven days (preferably ten or fourteen), and after several weeks look at how that average is changing over time.
Ageing is not about how old the equipment is; it is about what is known about its condition, and how that is changing over time.
Another approach is to inventory the myriad places carbon can accumulate in the land -- including trees, soils, landfills and reservoirs -- and estimate how that inventory is changing over time.
