Climate Change science - Sea-level rise
|Title:|| ||NASA Sea level change portal
|Description/subject:|| ||Understanding Sea Level...
NASA keeps track of sea level change and its causes from space... Find out more about how NASA satellite observations...help our understanding of this complex topic....
|Source/publisher:|| ||NASA (National Aeronautics and Space Administration)|
|Format/size:|| ||html etc.|
|Date of entry/update:|| ||24 March 2017|
|Title:|| ||Ice melt, sea level rise and superstorms: evidence from paleoclimate data, climate modeling, and modern observations that 2 °C global warming could be dangerous
|Date of publication:|| ||22 March 2016|
|Description/subject:|| ||Abstract. "We use numerical climate simulations, paleoclimate data, and modern observations to study the effect of growing ice melt from Antarctica and Greenland. Meltwater tends to stabilize the ocean column, inducing amplifying feedbacks that increase subsurface ocean warming and ice shelf melting. Cold meltwater and induced dynamical effects cause ocean surface cooling in the Southern Ocean and North Atlantic, thus increasing Earth's energy imbalance and heat flux into most of the global ocean's surface. Southern Ocean surface cooling, while lower latitudes are warming, increases precipitation on the Southern Ocean, increasing ocean stratification, slowing deepwater formation, and increasing ice sheet mass loss. These feedbacks make ice sheets in contact with the ocean vulnerable to accelerating disintegration. We hypothesize that ice mass loss from the most vulnerable ice, sufficient to raise sea level several meters, is better approximated as exponential than by a more linear response. Doubling times of 10, 20 or 40 years yield multi-meter sea level rise in about 50, 100 or 200 years. Recent ice melt doubling times are near the lower end of the 10–40-year range, but the record is too short to confirm the nature of the response. The feedbacks, including subsurface ocean warming, help explain paleoclimate data and point to a dominant Southern Ocean role in controlling atmospheric CO2, which in turn exercised tight control on global temperature and sea level. The millennial (500–2000-year) timescale of deep-ocean ventilation affects the timescale for natural CO2 change and thus the timescale for paleo-global climate, ice sheet, and sea level changes, but this paleo-millennial timescale should not be misinterpreted as the timescale for ice sheet response to a rapid, large, human-made climate forcing. These climate feedbacks aid interpretation of events late in the prior interglacial, when sea level rose to +6–9 m with evidence of extreme storms while Earth was less than 1 °C warmer than today. Ice melt cooling of the North Atlantic and Southern oceans increases atmospheric temperature gradients, eddy kinetic energy and baroclinicity, thus driving more powerful storms. The modeling, paleoclimate evidence, and ongoing observations together imply that 2 °C global warming above the preindustrial level could be dangerous. Continued high fossil fuel emissions this century are predicted to yield (1) cooling of the Southern Ocean, especially in the Western Hemisphere; (2) slowing of the Southern Ocean overturning circulation, warming of the ice shelves, and growing ice sheet mass loss; (3) slowdown and eventual shutdown of the Atlantic overturning circulation with cooling of the North Atlantic region; (4) increasingly powerful storms; and (5) nonlinearly growing sea level rise, reaching several meters over a timescale of 50–150 years. These predictions, especially the cooling in the Southern Ocean and North Atlantic with markedly reduced warming or even cooling in Europe, differ fundamentally from existing climate change assessments. We discuss observations and modeling studies needed to refute or clarify these assertions"......
James Hansen, Makiko Sato, Paul Hearty, Reto Ruedy, Maxwell Kelley, Valerie Masson-Delmotte, Gary Russell, George Tselioudis, Junji Cao, Eric Rignot, Isabella Velicogna, Blair Tormey, Bailey Donovan, Evgeniya Kandiano, Karina von Schuckmann, Pushker Kharecha, Allegra N. Legrande, Michael Bau, and Kwok-Wai Lo|
|Author/creator:|| ||James Hansen et al|
|Source/publisher:|| ||"Atmospheric Chemistry and Physics"|
|Format/size:|| ||html, pdf|
|Alternate URLs:|| ||http://www.atmos-chem-phys.net/16/3761/2016/acp-16-3761-2016-discussion.htm
|Date of entry/update:|| ||25 June 2016|
|Title:|| ||The New Normal, Super Storms, High Tides and Rising Seas (video)
|Date of publication:|| ||11 March 2016|
|Description/subject:|| ||"This is the story of the century. We have passed a tipping point and are now in a new era – one where the melting of global ice sheets will dramatically transform our world.
John clearly explains the latest science and puts sea level rise into a historical perspective. He then paints a vivid picture of what we can expect in the future, the potential solutions and what we must do now to create resilient cities and communities.
In this enlightening presentation you’ll learn:
Why sea level rise is now unstoppable
The realistic projections over the coming decades
Why the triple threat from storms, tides and sea level rise is producing deadly floods
Why real estate values will go “underwater” long before the property does
Some of the potential business opportunities that could benefit our economy
Why communities, businesses and individuals must start planning and adapting now
Higher Sea Levels Mean Big Risk and Big Business Opportunities
Businesses need to have the latest information on how sea level rise is going to impact their assets and supply chains in coastal zones around the world. Seeing what lies ahead can reduce risk and identify potential new business opportunities. John highlights the realistic projections that can impact an organization’s bottom line, because today the most important line in business is the shoreline.
Rising Seas: Community Planning for a new era
Municipalities in coastal zones and on tidal rivers must now plan for a full range of flooding scenarios from the interplay of storms, tides and sea level rise. John explains how good planning needs to consider short, medium and long range time scales to create cost effective resiliency..."|
|Author/creator:|| ||John Englander|
|Source/publisher:|| ||The Real Truth About Health Conference|
|Format/size:|| ||Adobe Flash (1 hour 28 minutes)|
|Alternate URLs:|| ||https://www.youtube.com/watch?v=7FzFMgeDOCU
|Date of entry/update:|| ||23 January 2017|
|Title:|| ||Melting Ice, Rising Seas - 4 presentations. (videos)
|Date of publication:|| ||13 January 2016|
|Description/subject:|| ||Melting Ice, Rising Seas (Part One) - Prof Jonathan Bamber, Introduced by Prof Bryan Storey...
Melting Ice, Rising Seas (Part Two) - Dr Steve Rintoul, Research Team Leader, CSIRO Australia...
Melting Ice, Rising Seas (Part Three) - Director of the Antarctic Research Centre...
Melting Ice, Rising Seas (Part Four) - Prof Rob DeConto, University of Massachusetts|
|Author/creator:|| ||Prof Jonathan Bamber, Dr Steve Rintoul, Tim Naish, Prof Rob DeConto|
|Source/publisher:|| ||The Antarctic Report - Royal Society of New Zealand|
|Format/size:|| ||Adobe Flash|
|Alternate URLs:|| ||https://www.antarcticreport.com/|
|Date of entry/update:|| ||24 January 2017|
|Title:|| ||Mega Cities Under Water - Rising Sea level (video)
|Date of publication:|| ||01 October 2014|
|Description/subject:|| ||"Miami, New Orleans and New York City completely under water it’s a very real possibility if sea levels continue to rise. In Earth Under Water we’ll see these events unfold as leading experts forecast how mankind will be impacted if global warming continues.
They’ll break down the science behind these predictions and explore ways humanity could adapt, including engineering vast dams near San Francisco, or building floating cities outside of New York..."|
|Source/publisher:|| ||National Geographic|
|Format/size:|| ||Adobe Flash (43 minutes)|
|Date of entry/update:|| ||22 January 2017|