Sentences with phrase «natural cyclical variation»

I've long wondered how those arguing that the recent decline in arctic sea is natural cyclical variation can explain the long history of failed attempts to explore the northwest passage by sea.

Not exact matches

With the available capital, an unavoidable optimism of postwar boom, and a complete lack of habits (good or bad) Kepes attempted to foster «media geared to all sensory modalities; incorporation of natural processes, such as cloud play, water flow, and the cyclical variations of light and weather; [and] acceptance of the participation of «spectators» in such a way that art becomes a confluence.»

The world has been warming for a century, and this warming is beyond any cyclical variation we have seen over the last 1000 or more years, and beyond the range of what we might expect from natural climate variations.

Although it is clear that further attention is required in defining and characterizing the aspects of this variation (e.g. frequency and amplitude [44,65]-RRB- that lead to differences in species responses, a more immediate empirical challenge is to characterize and separate the effects of periodic, stochastic and / or cyclical natural variations [61] from directional change imposed by long - term climatic forcing.