Frequency variability refers to the extent or amount by which something changes or fluctuates in terms of how often it occurs or repeats. Full definition
If a model comes along with low frequency variability that is less polar concentrated and fits the century, or half - century, trend pattern better, that would be news. (gfdl.noaa.gov)
Thus, the same key pattern of low - frequency variability in the dataset should have been retained as an indicator. (deepclimate.org)
These results are robust to the use of different observed datasets and to the treatment of low - frequency variability effects. (pacificclimate.org)