Sentences with phrase «yields at the global scale»

Not exact matches

It should be noted, though, that we as a nation have been relying upon similar high - stakes educational policies since the late 1970s (i.e., for now over 35 years); however, we have literally no research evidence that these high - stakes accountability policies have yielded any of their intended effects, as still perpetually conceptualized (see, for example, Nevada's recent legislative ruling here) and as still advanced via large - and small - scale educational policies (e.g., we are still A Nation At Risk in terms of our global competitiveness).

This outflow beat the previous record of $ 41.8 billion set at the height of the financial crisis in October 2008 and is likely due to a combination of factors including steadily rising yields and hints from global central bankers that monetary stimulus may be scaled back in the future, TrimTabs said.

At a global scale, increased CO2 concentrations could partially offset expected yield declines caused by lower soil moisture and higher temperature, but recent models suggest a significantly smaller fertilization effect from CO2 than previously predicted (25).

Temperature trends are therefore important for determining both past and future impacts of climate change on crop yields at sub-continental to global scales.

Attempts to extend current global models to coastal ecosystems may yield spurious results, unless these models capture other relevant processes, such as regional watershed processes and changes in landscapes at the ecosystem level, which are not tractable at the global scale.