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12/9/2018 Climate Change impacts on the northeastern US
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Climate Change impacts on the northeastern US
Last month, the fourth National Climate Assessment for the United States wasreleased to the public.
This NOAA led report is based off of the latest peer-reviewed scientific literature,complemented by other sources where appropriate. In addition, authors usedwell-established and carefully evaluated observational and modeling datasets,technical input reports, USGCRP’s sustained assessment products, and a suite ofscenario products. Each source was determined to meet the standards of theInformation Quality Act.
The report is quite long, so I am breaking it down the report by regions in theU.S.. Today I will focus on what the report has to say about the current and futureimpacts of climate change on the region through the end of this century.
Northeast U.S.
--By 2035, the northeastern U.S. is projected to warm more than 2 deg. C (3.6 degF.) above pre-industrial levels. This is about two decades faster than the globalaverage based on the most likely global emissions scenarios.
--Winters have warmed three times faster than summers in the northeastern U.S.
--Fewer cold extremes are anticipated by mid-century.
--Early emergence of plants can make them more susceptible to later cold spellsas their tolerance to cold air is reduced.
--Many deciduous trees are projected to experience an overall increase in theiramount of autumn foliage color.
--More intense precipitation events have increased the risk of some types ofinland floods in the region, especially in valley locations.
--Many of the larger cities in the Northeast, especially New England, weredeveloped along rivers, canals and on the coast. The predicted increase in floodfrequency or severity could increase the spread of contaminants into waterways,which can result in greater risks to health of nearby ecosystems, animals andpeople.
--Precipitation is expected to increase during winter and spring but with littlechange in summer.
Share this article: By Brett Anderson, AccuWeather senior meteorologist12/05/2018, 1:50:24 PM
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Global climate changeIn the AccuWeatherclimate change blog, youwill find links to the latestresearch and commentaryby experts with variouspoints of view.
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12/9/2018 Climate Change impacts on the northeastern US
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--Less early winter snowfall and earlier snowmelt is predicted, based on thelatest climate projections for this region. This will also result in decreased snowdepth and a shorter snow season with fewer days of snow on the ground.
--The proportion of winter precipitation falling as rain has already increasedacross the Northeast and will likely continue to do so.
--The report also expects a trend toward less lake ice.
--The earlier snowmelt and related runoff may lead to lower spring peakstreamflows for the 2014-2095 period compared to the 1951-2005 period.
Ski resort impacts
--Activities that rely on natural snow and ice cover are projected to remaineconomically viable in only far northern parts of the region by the end of thecentury under the higher greenhouse emissions scenario. This will put even morefocus on more costly man-made snowmaking capabilities.
--However, the capacity of some vulnerable southern and low-elevation locationsto adapt in the long-term is expected to be limited by higher nighttimetemperatures.
Impact on Northeast U.S. agriculture
According to the report, the Northeast agriculture sector will benefit from thechanging climate over the next half century due to greater productivity over alonger growing season.
However, excess moisture is already a leading cause of crop loss in theNortheast (waterlogged fields).
In addition, warmer winters are not killing off as many pests, which is leaving ahigher number of pests to attack crops during the growing season.
The ocean
Image courtesy NOAA.
--The coastal waters along the Northeast continental shelf warmed at a rate of0.033 deg. C (0.06 F.) per year from 1982 to 2016, which is three times fasterthan the global average. This increase in warming has been greatest during thesummer months.
--Sea level rise along the Middle Atlantic and northeastern U.S. coast has beenthree to four times higher than the global average.
--There has been a 100 to 200 percent increase in high tide flooding in somecoastal locations.
--The report projects anywhere from a 2- to 4.5-foot increase in sea-level alongthe Northeast coast by the end of this century.
Elliot Abrams Northeast U.S. expert
Brett Anderson Canadian weather blog
Astronomy blog with Dave Samuhel
12/9/2018 Climate Change impacts on the northeastern US
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It is obvious that climate change adaptation efforts by local, state and federalgovernments will be critical from now through the end of this century. The views expressed are those of the author and not necessarily those of AccuWeather, Inc. orAccuWeather.com
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Worth Mcalister Treysure looks like it we have had two early snows past two years first time in my 51yearsLike · Reply · 3d
Bill Rosscould also add that cloud cover has increased in recent years, leading to warmernight time temperatures, especially in winter, and cooler afternoon temperatures inmid-summer.Like · Reply · 3d
James W. CrissmanCarbon Fee and Dividend could transform our energy economy while adding jobs,increasing GDP, protecting the most vulnerable, and rapidly decreasing carbonemissions. Go to citizensclimatelobby.com for economic studies and infinite details
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Climate Change impacts on the northeastern USGlobal climate change - December 05, 2018, 1:50:24 PM ESTCurrent and projected climate change impacts to thenortheastern United States based on the latest NationalClimate Assessment
U.S. and Canada experiencing more days of extremehigh temperatures during summer and winterGlobal climate change - November 28, 2018, 11:11:32 AM ESTExtreme heat events in the U.S. and Canada have increasedsince 1980.
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12/9/2018 Climate Change impacts on the northeastern US
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