Sentences with phrase «substantial variability over»

Not exact matches

There is substantial low - frequency atmospheric variability in the Pacific sector over the 20th century, with extended periods of weakened (1900 — 1924; 1947 — 1976) as well as strengthened (1925 — 1946; 1977 — 2003) circulation.

Although substantial interdecadal variability is present in the time series, long - term decreases in upper - level cloud cover occur over land and ocean at low and middle latitudes in both hemispheres.

Excerpt: Sea level rise has been taking place almost monotonically over the past 8,000 years, with substantial decadal variability embedded in the trend.

Our results show that this expected range resulting from internal variability of the NAO is substantial for both SAT and P trends over the next 30 years, and in the case of P can even change the sign of the trend.

Thus, internal variability of the NAO imparts substantial uncertainty to future changes in regional climate over the coming decades.

Over the past 60 years, Alaska has warmed more than twice as rapidly as the rest of the United States, with state - wide average annual air temperature increasing by 3 °F and average winter temperature by 6 °F, with substantial year - to - year and regional variability.1 Most of the warming occurred around 1976 during a shift in a long - lived climate pattern (the Pacific Decadal Oscillation [PDO]-RRB- from a cooler pattern to a warmer one.

Before you start your GCM experiment you can reasonably assume based on observation that there is a substantial probability (> 25 %) that natural variability can contribute over.45 C of the observed.9 C rise in land temperatures.