Sentences with phrase «cyclone activity since»

Graphic showing that we've been in an active period of tropical cyclone activity since 1995, where the average number of named tropical storms has jumped significantly to 15.2 per year.

IPCC AR5 concluded that there is medium confidence that reduced aerosol forcing contributed to the observed increase in Atlantic tropical cyclone activity since the 1970s, but does not state any estimate of the magnitude of contribution.

In the Southern Hemisphere, fewer analyses have been completed, but they suggest a decrease in extra-tropical cyclone activity since the 1970s.»

The IPCC states that humans have, «more likely than not», contributed to the trend towards intense tropical cyclone activity since the 1970s.

Not exact matches

Intense tropical cyclone activity has increased since about 1970.

Since the climate response to the North Atlantic SST anomalies is primarily forced at the low latitudes and the AWP is in the path of or a birthplace for Atlantic tropical cyclones, the influence of the AMO on Atlantic tropical cyclone activity may operate through the mechanism of the AWP - induced atmospheric changes.

In looking at the accumulated cyclone energy index, COAPS at Florida State University noted that this was the lowest year for activity in the Northern Hemisphere since 1977, as the Atlantic, western Pacific and Eastern Pacific were all below normal in their activity.

There is observational evidence for an increase of intense tropical cyclone activity in the North Atlantic since about 1970, correlated with increases in tropical SSTs.

Global tropical cyclone activity is near historic lows, the frequency of major U.S. hurricanes has declined, and big tornados have dramatically declined since the 1970s.

«Confidence that global warming is increasing intense tropical cyclone activity has dropped since the [UN IPCC] panel's 2007 report»

• About the past: «There is observational evidence for an increase of intense tropical cyclone activity in the North Atlantic since about 1970, correlated with increases of tropical sea surface temperatures.

There is observational evidence for an increase of intense tropical cyclone activity in the North Atlantic since about 1970, correlated with increases of tropical sea surface temperatures.

However, to gain insight on the influence of climate change on Atlantic tropical storm and hurricane frequency, we must focus on longer (> 100 yr) records of Atlantic hurricane activity since very strong year - to - year and decade - to - decade variability appears in records of Atlantic tropical cyclones.