Sentences with phrase «u.s. over the past millennium»

In fact, there is reasonably compelling evidence that changes in drought in the western U.S. over the past millennium may, in large part, reflect the forced response of ENSO to past volcanic and solar radiative forcing.

Not exact matches

Indeed, when we used the corrected version of the western U.S. tree ring data in our analysis, our validation tests gave us the green light; we could indeed now meaningfully reconstruct Northern Hemisphere average temperatures over the entire past millennium.

Despite increased advocacy and research foci on providing EBT's for children over the past two decades, the number of children who go untreated continued to increase over this millennium (CDC, 2013; MHA, 2013; NCCP, 2014; U.S. Census Bureau, 2015).