Sentences with phrase «frequency precipitation variability»
The first EOF mode of low - frequency precipitation variability over North America is accompanied by a negative NAO mode in SLP (Fig. 6d).
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A decrease in precipitation frequency translates into even more year - to - year variability in fresh water resources for the Southwest.
Karl et al. [1995] examined precipitation records over the 20th century and showed that the high - frequency (up to interannual) variability has increased.
These variability trends indicate that the frequency of extremes (more drought events and more heavy precipitation events) has increased whereas the mean has remained approximately the same.
This criterion may not be satisfied if observations are available only over a short time period (as is the case for the vertical structure of clouds), or if the predictor is defined through low - frequency variability (trends, decadal variability), or if there is a lack of consistency among available datasets (as in the case for global - mean precipitation and surface fluxes).
The greater increases in erosion in the GGa1 scenario was attributed to greater variability in monthly precipitation and an increased frequency of large storms in the model simulation.
This finding is consistent with the idea that soils provide a natural low - pass filter (integrator) for precipitation variability, yielding the low frequency signals in total water storage.