Sentences with phrase «with average sea level rise»

The obsession with average sea level rise compared with other coastal hazards (increases in water levels driven by storms as well as tsunamis) is a good illustration of how the focus on climate change is distorting assessments of risks and hazards.

Not exact matches

With rates of sea - level rise along parts of the nation's Eastern seaboard increasing three to four times faster than the global average, experts are working to mitigate the effects by identifying threats, organizing collaboration among governments and organizations, as well as examining better...

With rates of sea - level rise along parts of the nation's Eastern seaboard increasing three to four times faster than the global average, experts are working to mitigate the effects by identifying threats, organizing collaboration among governments and organizations, as well as examining better communication techniques.

There is the same problem with averages on sea - level rise and flooding, he said.

The first predications of coastal sea level with warming of two degrees by 2040 show an average rate of increase three times higher than the 20th century rate of sea level rise.

But in terms of the frequency of these kinds of storms, we have strong evidence that storm surge will increase (on average) with sea level rise.

«When we modeled future shoreline change with the increased rates of sea level rise (SLR) projected under the IPCC's «business as usual» scenario, we found that increased SLR causes an average 16 - 20 feet of additional shoreline retreat by 2050, and an average of nearly 60 feet of additional retreat by 2100,» said Tiffany Anderson, lead author and post-doctoral researcher at the UH Mānoa School of Ocean and Earth Science and Technology.

Third, using a «semi-empirical» statistical model calibrated to the relationship between temperature and global sea - level change over the last 2000 years, we find that, in alternative histories in which the 20th century did not exceed the average temperature over 500-1800 CE, global sea - level rise in the 20th century would (with > 95 % probability) have been less than 51 % of its observed value.

«These new results indicate that relative sea levels in New Zealand have been rising at an average rate of 1.6 mm / yr over the last 100 years — a figure that is not only within the error bounds of the original determination, but when corrected for glacial - isostatic effects has a high level of coherency with other regional and global sea level rise determinations.

«suggesting that Arctic warming will continue to greatly exceed the global average over the coming century, with concomitant reductions in terrestrial ice masses and, consequently, an increasing rate of sea level rise.»

a base value sea - level rise of 0.5 m relative to the 1980 — 1999 average be used, along with an assessment of potential consequences from a range of possible higher sea - level rise values.

As the ice melted, starting around 20 000 years ago, sea level rose rapidly at average rates of about 10 mm per year (1 m per century), and with peak rates of the order of 40 mm per year (4 m per century), until about 6000 years ago.»

For example, if this contribution were to grow linearly with global average temperature change, the upper ranges of sea level rise for SRES scenarios shown in Table SPM - 3 would increase by 0.1 m to 0.2 m. Larger values can not be excluded, but understanding of these effects is too limited to assess their likelihood or provide a best estimate or an upper bound for sea level rise.

This approximation (very) closely tracks sea - level rise from 1880 to 2000 by assuming that the rate at which height increases is a strict linear function of the temperature with a straight averaging of the calculated rate for a period from 15 years before to the point in time for which height is being calculated (i.e., the embedding period).

For example, the latest (fifth) assessment report from the U.N.'s Intergovernmental Panel on Climate Change (IPCC) projects that the global average sea level rise over the course of the 21st century would be in the range of 10 to 32 inches, with a mean value of about 19 inches.

Since 1850, CO2 levels rose, as did the «globally and annually averaged land and sea surface temperature anomaly» (for what it's worth), but nobody knows whether or not the increase in CO2 had anything whatsoever to do with the warming.

The authors noted, Antarctica is projected to become almost ice - free with an average contribution to sea - level rise exceeding 3 m per century during the first millennium.

In fact, since then, greenhouse gas emissions have continued to rise, and accordingly global average temperatures have steadily increased, along with sea levels.

«With cumulative fossil fuel emissions of 10,000 gigatonnes of carbon (GtC), Antarctica is projected to become almost ice - free with an average contribution to sea - level rise exceeding 3 meters per century during the first millennium.&raWith cumulative fossil fuel emissions of 10,000 gigatonnes of carbon (GtC), Antarctica is projected to become almost ice - free with an average contribution to sea - level rise exceeding 3 meters per century during the first millennium.&rawith an average contribution to sea - level rise exceeding 3 meters per century during the first millennium.»

Hansen refers to them in this way «They identified eight episodes of large iceberg flux, with the largest flux occurring ∼ 14 600 years ago, providing evidence of an Antarctic contribution to Meltwater Pulse 1A, when sea level rose an average of 3 — 5 m century − 1 for a few centuries (Fairbanks, 1989).»

Over the long - term, melting of the West Antarctic Ice Sheet could yield as much as 10 to 14 feet of global average sea level rise, with local sea level rise varying considerably depending on land elevation trends, ocean currents and other factors.

The global average sea level has already risen by about eight inches since 1901, with up to another two and a half feet of sea level rise possible by 2100, according to the most recent projections from the U.N. Intergovernmental Panel on Climate Change.

As the Earth warms and sea level rises, it is inundated with seawater, which is 12 - 15 degrees warmer than the average air temperature.

Under the IPCC Business As Usual emissions scenario, an average rate of global mean sea level rise of about 6 cm per decade over the next century (with an uncertainty range of 3 — 10 cm per decade).

For the planet's sea level, this would mean over a half - foot rise averaged around the globe, in comparison with average sea levels from 1986 to 2005.

The carbon fee would be an insurance policy aimed at rapidly dropping the emissions blamed with increasing the average temperature of the world's land and atmosphere, which are linked by scientists to increased melting of glaciers and icecaps and rising sea levels that pose a direct threat to south Louisiana, he said.

For the time interval during the LIG in which GMSL was above present, there is high confidence that the maximum 1000 - year average rate of GMSL rise associated with the sea level fluctuation exceeded 2 m kyr — 1 but that it did not exceed 7 m kyr — 1.

At the onset of the deglaciation, a ~ 500 - year long, glacio - eustatic event may have contributed as much as 10 m to sea level with an average rate of about 20 mm / yr... RSL (relative sea level) records indicate that from ~ 7 to 3 ka, GMSL likely rose 2 to 3 m to near present - day levels.

Global average sea levels have risen by around 3.2 mm per year since satellite measurements began in 1993, the report says, with sea levels around 67 mm higher in 2014 than they were in 1993.

Their 0.2 mm / yr figure is taken to be consistent with an observed total sea level rise of 1.6 mm / yr from JASON - 1 and 2, but global averages from those satellites indicate a rise of about 2.5 mm / yr over the same period.

As he pointed out, a dominant unforced contribution to surface warming relative to forced trends would be expected to be accompanied by a trend of declining OHC, which is inconsistent with the observed trends averaged over the past half century as evidenced by mixed layer temperature measurements and sea level rise.

New estimates show that sea level rise is expected to hit the Golden State hard, with levels rising by an average of six inches, and possibly up to one foot by 2030 alone.

By 2100 much of Europe faces severe coastal flooding and sea level rise averaging over 50 centimetres, even with stringent greenhouse gas cuts, scientists say.

Indeed, I was consulting [unintelligible] the other day, who is the world's greatest expert on sea level, and has written several papers on it, and he said he is not expecting it to rise very much more than the eight inches we saw in the last century, and that in itself is only about a fifth of the 4 feet per century which has been the average sea level rise per century over the last 10,000 years, with sea level rising over 400 feet in that time.

Over the past decade, Greenland has contributed to sea level rise at an average rate of ~ 270 Gt / year, with a peak up to ~ 640 Gt during the extreme year of 2012.

Climate change has already triggered an increase in average annual temperatures in Canada in recent decades, along with rising sea levels.

I have been searching for a sea level rise at the end of the 20th century that would reconcile the 20th century's average rise rate of 1.8 mm / year with the satellite era average of about 3mm / year.

[5] From 1950 to 2009, measurements show an average annual rise in sea level of 1.7 ± 0.3 mm per year, with satellite data showing a rise of 3.3 ± 0.4 mm per year from 1993 to 2009, [6] a faster rate of increase than previously estimated.

On average, sea level has risen 7.5 inches (0.19 meters) since 1901, and will rise higher with «virtual certainty» in this century.

FIGURE 2.5 Co-variation of sea level with global average temperature in the geologic past, compared with the IPCC forecast for sea level rise by the year 2100.

The Statement also highlighted that long - term indicators of climate change such as increasing carbon dioxide concentrations, sea level rise and ocean acidification continue «unabated», with Arctic sea ice coverage remaining below average and the previously stable Antarctic sea ice extent at or near a record low.

Statistically significant trends obtained from records longer than 40 years yielded sea - level - rise estimates between 1.06 — 1.75 mm / yrear - 1, with a regional average of 1.29 mm yr - 1, when corrected for global isostatic adjustment (GIA) using model data, with a regional average of 1.29 mm - 1..

For example, the melting of the Greenland ice sheet broke previous records in 2002, 2005, and 2007, and seasonal melting from 1996 to 2007 was above average compared with the 1973 - 2007 period.10, 11 The melting of the Greenland ice sheet contributed around 0.02 inch (0.6 millimeter) to global sea - level rise in 2005 — more than double the 1996 contribution.4 From 1993 to 2003 the average rate of sea - level rise increased to about 0.12 inches (3.1 millimeters) per year.12 That means that in 2005 Greenland could have contributed 19 percent of the average annual global sea level rise rate.

Sea level rise has been minimal so far, with a global average of 17 centimeters (6 inches) during the last century.

Sea level rise here is happening 3 - 4 times as quickly as the global average — with the expectation, the USGS says, that «if global temperatures continue to rise, rates of sea level rise in this area are expected to continue increasing.&raqSea level rise here is happening 3 - 4 times as quickly as the global average — with the expectation, the USGS says, that «if global temperatures continue to rise, rates of sea level rise in this area are expected to continue increasing.&raqsea level rise in this area are expected to continue increasing.»

The exact speed with which these are going to contribute to sea level rise is highly uncertain, the synthesis report says, but the best scientific estimate — based on observed correlation between global average temperatures and sea level rise over the past 120 years — shows that by 2100 we will experience sea level rise of one meter or more.

If relatively small changes in CO2 levels have big effects — meaning that we live in a more sensitive climate system — the planet could warm by as much as 6 degrees Celsius on average with attendant results such as changed weather patterns and sea - level rise.

Coupled with the average climate - change — driven rate of sea level rise over these same 25 y of 2.9 mm / y, simple extrapolation of the quadratic implies global mean sea level could rise 65 ± 12 cm by 2100 compared with 2005, roughly in agreement with the Intergovernmental Panel on Climate Change (IPCC) 5th Assessment Report (AR5) model projections.

This expansion, combined with the melting of land - based ice, has caused global average sea level to rise by roughly 7 - 8 inches since 1900 — a trend that is expected to accelerate over coming decades.

Studies in the New York City metropolitan area have projected that climate - change impacts associated with expectations that sea level will rise, could reduce the return period of the flood associated with the 100 - year storm to 19 to 68 years on average, by the 2050s, and to 4 to 60 years by the 2080s (Rosenzweig and Solecki, 2001a), jeopardising low - lying buildings and transportation systems.