The great bulks of the Greenland and Antarctic ice sheets actually have pulled ocean water toward them, so that
their coastal sea levels are notably higher than they would be without that gravitational attraction.
Let's hope the single issue of CO2 doesn't obscure the very serious threats that do more than just promise to rise
coastal sea levels, which by the way, would be changing as they have throughout the long history of the planet anyway; a presumed future history that our technological civilization hopes to experience for some time to come.
«Extreme
coastal sea levels more likely to occur, new data, advanced modeling techniques suggest.»
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.
Professor Ed Hill, Executive Director of the National Oceanography Centre commented, «We trust that these findings will help inform
coastal sea level adaptation and mitigation strategies.
New research published this week in the Journal of Climate reveals that one key measurement — large - scale upper - ocean temperature changes caused by natural cycles of the ocean — is a good indicator of regional
coastal sea level changes on these decadal timescales.
A particular challenge is posed by the positioning of the gauges along the coasts, because
coastal sea level can be affected by local effects such as the wind piling up water against the shore.
A new study helps clarify how past and future
coastal sea level changes are related to local winds and large - scale ocean circulation.
However,
coastal sea level variability observed by tide gauges over the last few decades has been driven almost entirely by local winds.
A new study, published in Journal of Geophysical Research - Oceans, helps clarify how past and future
coastal sea level changes are related to local winds and large - scale ocean circulation.
The results also highlight coastal regions that are well - represented in current generation climate models (and those that are not) and the time periods over which
coastal sea level may be used as a proxy for the large - scale ocean circulation.
Two articles recently published in the peer reviewed literature discuss the contribution of waves to
coastal sea level rise and the roles of human and natural influences in Canada's warming climate.
Finally NOAA 2016 updated
coastal sea level rise tide gauge data shows no acceleration in sea level rise along the California coastline or anywhere else despite false claims by the UN IPCC that man made emissions have been increasing rates of sea level rise since the 1970's.
How might this affect
coastal sea level?
The advantage of scenario 3 is the near - term broadening of applications of satellite altimetry to include studies of ocean eddies, near -
coastal sea level variability, and terrestrial water.
Not exact matches
But research has shown Guam is among the top five most vulnerable US military installations worldwide due to
coastal erosion, extreme weather and rising
sea levels linked to climate change.
Sea -
level rise is also threatening
coastal water supplies, which often draw their freshwater from underground aquifers.
And even though these
coastal glaciers have passed the point of no return, the researchers predict it's unlikely they'll melt entirely until 2100 — when that happens it's estimated that it will raise global
sea levels by around 3.8 cm (1.5 inches).
Seattle - based map - maker and urban planner Jeffrey Linn has released a series of city maps including one for Vancouver, showing how rising
sea levels might drastically change
coastal living.
As
sea levels rise and disaster risks to
coastal communities grow, some planners are broaching the idea of a «strategic retreat» from areas that face persistent floods and fires.
First off, yes: There's consensus that the science of climate change predicts that in a warming world, hurricanes will become more intense, carry more rain, and cause worse
coastal flooding linked in part to
sea level rise.
The report stresses that «If we continue on our current path, by 2050 between $ 66 billion and $ 106 billion worth of existing
coastal property will likely be below
sea level nationwide, with $ 238 billion to $ 507 billion worth of property below
sea level by 2100.
We know that
sea levels are increasing thanks to the satellite observations, collated by NASA's Goddard Space Flight Center, as well as
coastal tide gauge records monitored by Australia's leading science body, the CSIRO.
Commercial grade installations in
coastal areas can pump fresh water to aquifers inland, lowering rising
sea levels and alleviating drought areas.
Located midway between the Pacific Coast and California's Inland Valleys in the state's
coastal mountain range, Lake County's 8,700 acres (3,520 hectares) of vineyards are 1,370 - 2,600 feet (418 - 792 meters) above
sea level.
By providing a setting for the salt marsh to migrate, Rough Meadows is projected to play a key role in assisting this important
coastal ecosystem threatened by
sea level rise, while also providing tangible public health and safety benefits by storing flood waters and blunting storm surge in the important years ahead.
«We have a moral obligation to our children and future generations to reduce the severe impacts of climate change like rising
sea levels, which will disproportionately impact
coastal communities in Massachusetts,» said EPA Administrator McCarthy.
A report published Thursday by the National Oceanic and Atmospheric Administration (NOAA) finds that
sea level increases over the next century will have significant impacts on
coastal communities.
Rising
sea levels caused by a warming climate threaten greater future storm damage to New York City, but the paths of stronger future storms may shift offshore, changing the
coastal risk for the city, according to a team of climate scientists.
«In order to understand
coastal impacts under current and future climate and socio - economic conditions, we do not only need robust projections of mean
sea level rise but also a profound knowledge of present - day and future extreme
sea levels, because these events drive the impacts,» Wahl said.
If
sea -
level rise remains small, then changes in storm surge are the most important concern for future
coastal risk to New York City.
«
Sea level is rising and higher sea level increases the damages from coastal storms,» said Richard B. Alley, Evan Pugh Professor of Geosciences, Penn Sta
Sea level is rising and higher
sea level increases the damages from coastal storms,» said Richard B. Alley, Evan Pugh Professor of Geosciences, Penn Sta
sea level increases the damages from
coastal storms,» said Richard B. Alley, Evan Pugh Professor of Geosciences, Penn State.
Improving projections for how much ocean
levels may change in the future and what that means for
coastal communities has vexed researchers studying
sea level rise for years, but a new international study that incorporates extreme events may have just given researchers and
coastal planners what they need.
The researcher team agreed that including extreme
sea levels into
coastal impact studies is imperative in helping vulnerable parts of the world effectively protect themselves by adapting through new or upgraded infrastructure such as dikes, pumping systems, barriers, or other tools like new building codes or flood zoning that prevents new infrastructure from being built in high - risk areas.
In addition to permanently submerging
coastal land,
sea -
level rise will make the flood damage from hurricanes and nor'easter s worse in the future, he said.
That study found that a 1.5 degrees Celsius world would reach a peak rate of
sea -
level rise about 0.7 inches per decade less than in a 2 degrees Celsius world — a potentially life - saving reduction for some vulnerable
coastal ecosystems.
Pohnpei itself shows little
coastal erosion, perhaps because it is fairly high above
sea level and ringed by mangrove forest.
«This is important from
coastal erosion and shoreline change perspectives under rising
sea levels,» says Bromirski.
«Within the next 15 years, higher
sea levels combined with storm surge will likely increase the average annual cost of
coastal storms along the Eastern Seaboard and the Gulf of Mexico by $ 2 billion to $ 3.5 billion,» the report says.
This is an important policy area to examine now: «In an era of growing
coastal populations and rising
sea levels, decisions made after one disaster strongly influence our vulnerability to the next.»
«While
sea level rise sets the conditions for landward displacement of the shore,
coastal storms supply the energy to do the «geologic work» by moving the sand off and along the beach,» writes Leatherman on his DrBeach.org website.
Ongoing climate change affects hydrogeography, water temperatures,
sea level anomalies, and salinity in
coastal areas worldwide.
Chemical clues in the mangroves and algae can also tell how salty the water was, which shows whether or not El Niño was raising the local
sea level and causing more seawater to seep into the
coastal wetlands.
«However, our findings show that
sea -
level rise could be considerably faster than anything yet observed, and because of this situation,
coastal communities need to be prepared for potential inundation.»
The chlorophyll - a content that represents the algae
levels in
coastal waters was higher than last year in both the southern areas of the Finnish Archipelago
Sea and the Gulf of Finland.
The low - lying island nation offers the scientists a unique opportunity to reconstruct climate conditions during previous periods of varying
sea levels to help scientists better understand how future climate change will the effect the 1,000 km - long archipelago and low - lying
coastal areas all around the world.
A team of scientists from the Potsdam Institute for Climate Impact Research (PIK) now provides a method to quantify monetary losses from
coastal floods under
sea -
level rise.
Excess amounts from human activities often end up in rivers, streams and
coastal environments, causing algal blooms, loss of
sea grass and low oxygen
levels in the water, which can kill large numbers of fish and other organisms.
Dr Svetlana Jevrejeva from the NOC, who is the lead author on this paper, said «
Coastal cities and vulnerable tropical
coastal ecosystems will have very little time to adapt to the fast
sea level rise these predictions show, in scenarios with global warming above two degree.
«We conclude that
coastal communities are facing a looming crisis due to climate change related
sea -
level rise, one that will manifest itself as increased frequency of Sandy - like inundation disasters in the coming decades along the mid-Atlantic and elsewhere, from storms with less intensity and lower storm surge than Sandy,» Sweet said.