Sentences with phrase «available over the past century»

Clearly, the plethora of goods that have become available over the past century, and changing understandings of just how much children can and should have, follow complex social and historical rhythms.

Not exact matches

«So, working independently, several research teams have converged on almost identical results for warming over the past century at the global scale, but with periodic fine - tuning as additional information becomes available,» Holt and Field write.

The actual prevailing view of the paleoclimate research community that emerged during the early 1990s, when long - term proxy data became more widely available and it was possible to synthesize them into estimates of large - scale temperature changes in past centuries, was that the average temperature over the Northern Hemisphere varied by significantly less than 1 degree C in previous centuries (i.e., the variations in past centuries were small compared to the observed 20th century warming).

``... I am one of the strong supporters of the proposition that the available records indicate climate warming over the past century or so.

The available data over the past century can be interpreted within the framework of a variety of hypotheses as to cause and mechanisms for the measured changes.

However, the available evidence does not indicate pronounced long - term changes in the Sun's output over the past century, during which time human - induced increases in CO2 concentrations have been the dominant influence on the long - term global surface temperature increase.