Here is another ocean related media story on new migration through NW Passage http://seattletimes.nwsource.com/html/businesstechnology/2015429051_apeuclimateoceans.html?syndication=rss
<http://seattletimes.nwsource.com/html/businesstechnology/2015429051_apeuclimateoceans.html?syndication=rss> "Reid said the last time the world witnessed such a major incursion from the Pacific was 2 million years ago, which had "a huge impact on the North Atlantic," driving some species to extinction as the newcomers dominated the competition for food." <http://seattletimes.nwsource.com/html/businesstechnology/2015429051_apeuclimateoceans.html?syndication=rss>Here is the main home page for the mentioned EU research effort. http://www.clamer.eu/about-clamer <http://www.clamer.eu/about-clamer> On Sun, Jun 26, 2011 at 10:29 AM, Rau, Greg <r...@llnl.gov> wrote: > http://www.sciencedaily.com/releases/2011/06/110620161215.htm > Researchers Link Fastest Sea-Level Rise in Two Millennia to Increasing > Temperatures > > ScienceDaily (June 20, 2011) — An international research team including > University of Pennsylvania scientists has shown that the rate of sea-level > rise along the U.S. Atlantic coast is greater now than at any time in the > past 2,000 years and that there is a consistent link between changes in > global mean surface temperature and sea level. > > The research was conducted by members of the Department of Earth and > Environmental Science in Penn's School of Arts and Science: Benjamin Horton, > associate professor and director of the Sea Level Research Laboratory, and > postdoctoral fellow Andrew Kemp, now at Yale University's Climate and Energy > Institute. > > Their work will be published in the journal Proceedings of the National > Academy of Sciences on June 20. > > "Sea-level rise is a potentially disastrous outcome of climate change, as > rising temperatures melt land-based ice and warm ocean waters," Horton said. > > "Scenarios of future rise are dependent upon understanding the response of > sea level to climate changes. Accurate estimates of past sea-level > variability provide a context for such projections," Kemp said. > > In the new study, researchers provided the first continuous sea-level > reconstruction for the past 2,000 years and compared variations in global > temperature to changes in sea level during this time period. > > The team found that sea level was relatively stable from 200 B.C. to 1,000 > A.D. During a warm climate period beginning in the 11th century known as the > Medieval Climate Anomaly, sea level rose by about half a millimeter per year > for 400 years. There was then a second period of stable sea level associated > with a cooler period, known as the Little Ice Age, which persisted until the > late 19th century. Since the late 19th century, however, sea level has risen > by more than 2 millimeters per year on average, which is the steepest rate > for more than 2,100 years. > > To reconstruct sea level, the research team used microfossils called > foraminifera preserved in sediment cores from coastal salt marshes in North > Carolina. The age of these cores was estimated using radiocarbon dating and > several complementary techniques. > > To ensure the validity of their approach, the team members confirmed their > reconstructions against tide-gauge measurements from North Carolina for the > past 80 years and global tide-gauge records for the past 300 years. A second > reconstruction from Massachusetts confirmed their findings. The records were > also corrected for contributions to sea-level rise made by vertical land > movements. > > The team's research shows that the reconstructed changes in sea level > during the past millennium are consistent with past global temperatures and > can be described using a model relating the rate of sea-level rise to global > temperature. > > "The data from the past help to calibrate our model and will improve > sea-level rise projections under scenarios of future temperature rise," > research team member Stefan Rahmstorf said. > > In addition to Horton and Kemp, the research was conducted by Jeffrey > Donnelly of the Woods Hole Oceanographic Institution, Michael Mann of > Pennsylvania State University, Martin Vermeer of Finland's Aalto University > School of Engineering in Finland and Rahmstorf of Germany's Potsdam > Institute for Climate Impact Research. > > Support for this research was provided by the National Science Foundation, > the National Oceanic and Atmospheric Administration, United States > Geological Survey, the Academy of Finland, the European Science Foundation > through European Cooperation in Science and Technology and the University of > Pennsylvania. > > -- > You received this message because you are subscribed to the Google Groups > "geoengineering" group. > To post to this group, send email to geoengineering@googlegroups.com. > To unsubscribe from this group, send email to > geoengineering+unsubscr...@googlegroups.com. > For more options, visit this group at > http://groups.google.com/group/geoengineering?hl=en. > > -- *Michael Hayes* *360-708-4976* http://www.wix.com/voglerlake/vogler-lake-web-site -- You received this message because you are subscribed to the Google Groups "geoengineering" group. 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