Recharge (drainage from the lowest model soil layer) simulated by the Variable Infiltration Capacity (VIC) model was compatible with observed monthly groundwater storage anomalies and month-to-month changes in groundwater storage.
To be sure, the household survey can be volatile, and relying on month-to-month changes, particularly for smaller groups like black teenagers, can be treacherous.
So the savings rate is a short-term snapshot, and while month-to-month changes may not mean much, the trend over the last year is clear.
Because of its smaller sample size, the household survey is always more volatile, and month-to-month changes can be deceptive for that reason.
But economists cautioned that month-to-month changes can be volatile and that, over the year, average hourly earnings are up 2.5percentt.
But because the household poll uses a much smaller sample, its month-to-month changes are often misleading, said Thomas J. Nardone, the Labor Department economist who oversees the survey.
"Month-to-month changes can be volatile, but the slowdown is consistent with signs of softening in the household sector in recent months," said Robert Gardner, Nationwide's chief economist.
Whatever economists expected to happen, looking at month-to-month changes in retail is silly.
Overall, the combination of a few measured carbon dioxide concentrations and modeling can discern month-to-month changes in emissions of 15% or more.
He said month-to-month changes can fluctuate greatly.
We investigated a) whether month-to-month changes in mortality rates were associated with month-to-month changes in the previous-year average exposure to PM2.5, and b) whether 7-year average levels of PM2.5 chemical constituents modified this association.
