Anticipated changes include melting glaciers and polar ice,
more extreme precipitation events, agricultural impacts, wildfires, heat waves, increased incidence of some infectious diseases, sea level rise, ocean acidification, and increased hurricane intensity.
More extreme precipitation events (with 3 - hour duration) so intense than in the past they would be exceeded on average only once every 10 years are projected to occur on average three times as often in future in Metro Vancouver and about three and a half times as often in future in CRD.
One of the most likely byproducts of global warming is
more extreme precipitation events, as warmer temperatures can hold more water vapor in the atmosphere.
More floods, more hurricanes, and
more extreme precipitation events.
Maine could also see two to three times
more extreme precipitation events, defined as four inches over 48 hours, said Wake.
In the Northeast, «Communities are affected by heat waves,
more extreme precipitation events, and coastal flooding due to sea level rise and storm surge,» for example, while in the Southeast and Caribbean, «Decreased water availability, exacerbated by population growth and land - use change, causes increased competition for water.
Not exact matches
It also has seen a 71 percent increase in the frequency of
extreme precipitation events —
more than any other region in the United States, according to the paper.
For instance, though about 30 percent of farmers surveyed agreed that
extreme weather
events will become
more frequent in the future, 52 percent agreed that farmers should take additional steps to protect their land from increased
precipitation.
Climate forecasts indicate that the Southern High Plains will become drier with
more frequent
extreme heat
events and decreased
precipitation.
Our study shows is that increases in the number of
extreme heat and
extreme precipitation events, particularly during summer months, lead to
more asthma hospitalizations in Maryland.»
What goes up, must come down and,
more and
more, that water vapor is coming down in
extreme precipitation events — defined in North America as
more than 100 millimeters of rainfall (or the equivalent in snow or freezing rain) falling in 24 hours — according to new research also published February 17 in Nature that examines such
events in the Northern Hemisphere.
Climate scientists know that the intensity of
extreme precipitation events is on the rise because there's
more water vapor in the atmosphere caused by higher global and sea temperatures.
With rising global temperatures, the 2014 National Climate Assessment predicts that many communities will see
more frequent
extreme precipitation events like the one that hit Baton Rouge, La., last year.
The 2014 National Climate Assessment predicted that many U.S. communities will see
extreme precipitation events more often as global temperatures rise.
Climate model projections show a warmer Montana in the future, with mixed changes in
precipitation,
more extreme events, and mixed certainty on upcoming drought.
However, combined measuring stations around the world suggest there has been a global trend towards
more frequent and intense hot
extremes since the 1950s, as well as
more heavy
precipitation events.
Severe Weather and
Precipitation: Many areas in the United States will experience more frequent and extreme storm events; this includes high winds and increased p
Precipitation: Many areas in the United States will experience
more frequent and
extreme storm
events; this includes high winds and increased
precipitationprecipitation.
These variability trends indicate that the frequency of
extremes (
more drought
events and
more heavy
precipitation events) has increased whereas the mean has remained approximately the same.
But all were
extreme events, both in terms of
precipitation rates and of cost, of the sort which we expect to become much
more frequent given both theory and observed metrics such as precipitable water in the atmosphere.
The Milwaukee Metropolitan Sewerage District has an ambitious plan to scale up green infrastructure, using green roofs, land conservation, permeable pavement and other approaches to help slow and absorb water during the
extreme precipitation events that are becoming
more common with climate change.
The results indicate that
extreme precipitation events consistently increase by the middle of the twenty - first century for all return periods (49 — 52 %), but changes may become
more profound by the end of the twenty - first century (81 — 101 %).
More accurate and reliable
precipitation data would be invaluable, not only for the study of climate trends and variability, but also as inputs to hydrological and ecological models and for model validation, characterization of
extreme events, and flood and drought forecasting.
«Lehmann et al. (2015) also found large — scale increasing patterns in
extreme precipitation, with 12 %
more record - breaking rainfall
events over 1981 — 2010.
On
extreme precipitation events over mid-latitude landmass and wet tropical regions becoming
more intense and frequent, the CLAs clarified that the assessment was based on
more than the RCPs, and that the conclusion was generally true for all these regions.
Northeast states can expect
more climate change related heat waves — with significantly
more days above 90 degrees F — and flooding from sea level rise and
extreme precipitation events.
With the climate warming,
extreme precipitation events may start happening
more frequently, a paper published by the American Water Resources Association said.
For example, in IPCC (2007, Fourth Assessment Report — AR4; Summary for policymakers, p. 15), we read (our emphasis): «It is very likely that hot
extremes, heat waves and heavy
precipitation events will continue to become
more frequent».
It could be a simple
event such as
extreme precipitation or a tropical cyclone or a
more complex sequence of a late onset of the monsoon coupled with prolonged dry spells within the rainy season.
In addition, climate change is very likely to lead to
more frequent
extreme heat
events and daily
precipitation extremes over most areas of North America,
more frequent low snow years, and shifts towards earlier snowmelt runoff over much of the western US and Canada (high confidence).
The evidence for human influence on the probability of
extreme precipitation events, droughts, and storms is
more mixed.
Greater cropping systems diversity can also help mitigate risks associated with the impacts of global climate change, which will drive
more extreme and variable weather
events, not to mention sustained temperature and
precipitation changes that will impact agricultural production.
«[C] ommunities across the Nation are already experiencing a range of climatic changes, including
more frequent and
extreme precipitation events, longer wildfire seasons, reduced snowpack,
extreme heat
events, increasing ocean temperatures, and rising sea levels,» the report says.
This report discusses our current understanding of the mechanisms that link declines in Arctic sea ice cover, loss of high - latitude snow cover, changes in Arctic - region energy fluxes, atmospheric circulation patterns, and the occurrence of
extreme weather
events; possible implications of
more severe loss of summer Arctic sea ice upon weather patterns at lower latitudes; major gaps in our understanding, and observational and / or modeling efforts that are needed to fill those gaps; and current opportunities and limitations for using Arctic sea ice predictions to assess the risk of temperature /
precipitation anomalies and
extreme weather
events over northern continents.
Indicators based on daily
precipitation data show
more mixed patterns of change but significant increases have been seen in the
extreme amount derived from wet spells and number of heavy rainfall
events.
Strong scientific evidence shows that global warming is increasing certain types of
extreme weather
events, including heat waves, coastal flooding,
extreme precipitation events, and
more severe droughts.
At the state level, Rhode Island, New Hampshire, Massachusetts, Vermont, New York and Louisiana all saw
extreme precipitation events increase in frequency by
more than 50 percent.
It is very likely that hot
extremes, heat waves, and heavy
precipitation events will continue to become
more frequent.
Here is an excerpt of the research paper, «When It Rains It Pours», from Environment America, showing a statistically significant spike in flash flooding and other
extreme precipitation events since 1948: «Weather records show that storms with
extreme precipitation have become
more frequent over the last 60 years.
And that's not even counting average
precipitation or orccurance of
extreme events which are part of the climate but much
more difficult to reconstruct.
Elsewhere,
more frequent
extreme precipitation events make flooding the perennial risk.