Sentences with phrase «large rainfall events»

The role of global warming in unusually large rainfall events in countries from the United Kingdom to China has been hotly debated.

«The largest rainfall events, almost regardless of duration, are tied to tropical cyclones,» Villarini said.

Not exact matches

Dr Stephen Grimes of Plymouth University, who initiated the research project, highlighted the climate changes that must have caused this increase in sediment erosion and transport — «We have climate model simulations of the effect of warming on rainfall during the PETM event, and they show some changes in the average amounts of rainfall, but the largest change is how this rainfall is packaged up — it's concentrated in more rapid, extreme events — larger and bigger storms.»

Further complicating the use of these proxies is the fact that the deviation in oxygen - 18 ratios is affected by the amount of TC rainfall, the distance from the center of the cyclone at which the rain was produced, and the intensity of the cyclone — so I doubt these proxies alone will enable disentangling intensity and rainfall, tnough a large number of samples over an area could reveal information about the track and extent of the TC event.

We have fairly high confidence that we observe the history of Heinrich events (huge discharges of ice - rafted debris from the Laurentide ice sheet through Hudson Bay that are roughly coincident with large southern warming, southward shift of the intertropical convergence zone, extensive sea ice in the north Atlantic, reduced monsoonal rainfall in at least some parts of Asia, and other changes), and also cold phases of the Dansgaard / Oeschger oscillations that lack Heinrich layers and are characterized by muted versions of the other climate anomalies I just mentioned.

So: The study finds a fingerprint of anthropogenic influences on large scale increase in precipitation extremes, with remaining uncertainties — namely that there is still a possibility that the widespread increase in heavy precipitation could be due to an unusual event of natural variability.The intensification of extreme rainfall is expected with warming, and there is a clear physical mechanism for it, but it is never possible to completely separate a signal of external forcing from climate variability — the separation will always be statistical in nature.

«Lehmann et al. (2015) also found large — scale increasing patterns in extreme precipitation, with 12 % more record - breaking rainfall events over 1981 — 2010.

In our chaotic weather system, the complex dynamics of the atmosphere mean the size and path of a storm or heavy rainfall event has a large element of chance, the authors say.

The observed influence of the NAO on extreme precipitation is largest in eastern North America, with the likelihood of a negative phase extreme rainfall event decreased in the north and increased in the south under the positive phase of the NAO.

An Amplified Hadely Cell means large areas of the mid-latitudes would see subsiding air aloft, which acts as a cap to large scale rainfall events.

Such high SSTs are associated with most ENSO events, and it is probably SSTs in these regions, rather than the Pacific ENSO (Nicholson and Kim, 1997), that have the largest influence on east African rainfall.

In addition to offering areas for recreation and benefits to mental and physical health, urban green spaces «filter large amounts of water after heavy rainfall and soften the effects of heat waves or other extreme events,» according to the agency, whose recent assessment on urban ecosystems concluded that «with the right policies and tools, urbanization does not need to be a threat to biodiversity in cities and beyond.»