Sentences with phrase «flood magnitudes increasing»

Finds that in none of the four regions defined in this study is there strong statistical evidence for flood magnitudes increasing with increasing GMCO2

Not exact matches

«The early 20th century got a lot of flooding,» but only 25 percent of the increase in flood magnitude over the past century can be explained by those climate patterns, Munoz says.

The chance of major global crop failures of this magnitude will increase with climate change, as drought, flooding, and heat waves strike fields more often.

His earlier research showed limited evidence of significant changes in the magnitude of floods, but strong evidence pointing toward an increasing frequency of flooding.

The precise magnitude of the anthropogenic contribution remains uncertain, but in nine out of ten cases our model results indicate that twentieth - century anthropogenic greenhouse gas emissions increased the risk of floods occurring in England and Wales in autumn 2000 by more than 20 %, and in two out of three cases by more than 90 %.

In this case, the magnitude of losses when floods do occur would increase, often by more than 50 percent, making it critical to also prepare for larger disasters than we experience today.

For conditions close to the Port of Los Angeles, the 0.25 m increase in the reasonable upper bound can result in a flooding - risk increase by roughly three orders of magnitude.

Heavy precipitation has increased worldwide, but the effect of this on flood magnitude has been difficult to pinpoint.

Snowfall varies across the region, comprising less than 10 % of total precipitation in the south, to more than half in the north, with as much as two inches of water available in the snowpack at the beginning of spring melt in the northern reaches of the river basins.81 When this amount of snowmelt is combined with heavy rainfall, the resulting flooding can be widespread and catastrophic (see «Cedar Rapids: A Tale of Vulnerability and Response»).82 Historical observations indicate declines in the frequency of high magnitude snowfall years over much of the Midwest, 83 but an increase in lake effect snowfall.61 These divergent trends and their inverse relationships with air temperatures make overall projections of regional impacts of the associated snowmelt extremely difficult.

Disputes within climate science concern the nature and magnitude of feedback processes involving clouds and water vapor, uncertainties about the rate at which the oceans take up heat and carbon dioxide, the effects of air pollution, and the nature and importance of climate change effects such as rising sea level, increasing acidity of the ocean, and the incidence of weather hazards such as floods, droughts, storms, and heat waves.

Large - scale flooding can also occur due to extreme precipitation in the absence of snowmelt (for example, Rush Creek and the Root River, Minnesota, in August 2007 and multiple rivers in southern Minnesota in September 2010).84 These warm - season events are projected to increase in magnitude.

-- An increase in the frequency and magnitude of extreme climate events (hurricanes, cyclones, storm surges) causing flooding and direct injury

For example, the statement that sea level rise will increase flooding due to coastal storms is later qualified by the statement that there is «low confidence in the magnitude» of the increase in flood risk.

The National Flood Insurance Program, designed to protect Americans from catastrophic floods, has failed in almost every way, encouraging people to buy and build in flood - prone areas while increasing the cost and magnitude of disasters.

Like many other conference speakers and attendees, Secretary - General Ban cited the recent droughts, floods, and Tropical Storm Sandy as proof of the dire consequences of man - made global warming, even though many studies and scientists (including scientists who usually fall into the climate alarmist category) have stated that there is no evidence to support claims that «extreme weather» has been increasing in frequency and / or magnitude in recent years, or that extreme events (hurricanes, droughts, heat waves, etc.) have anything to do with increased CO2 levels.

In agreement with this speculation are climate projections suggesting increased flood magnitude in the future across the Southwest, despite reduced mean precipitation amounts [4].

For example, an increase in the frequency or magnitude of floods and droughts could lead to yield reductions, crop damage, and crop failure [6].

Under the projected increase in frequency and magnitude of river floods, traditional approaches based only on rising indefinitely local flood protections are not sustainable in the long term.

The IPCC in its Summary for Policymakers (IPCC 2001), Tyson and Gatebe (2001), Schulze, Meigh and Horan (2001) and New (2002) predicted that global warming resulting from increasing greenhouse gas emissions, will have serious, adverse effects on water supplies, and that floods and droughts will increase in magnitude and frequency.

Thus many populations face both reduced water availability and increased flood frequency and magnitude [76].