http://netvouz.com/pdboyer/tag/change?feed=rss&pg=1 pdboyer's bookmarks tagged "change" on Netvouz http://www.sciencenews.org/index/generic/activity/view/id/45059/title/_Losing_Louisiana Residents of Louisiana, take note: If engineers don’t divert sediment-rich waters from the Mississippi River to help replenish a sinking river delta, about 10 percent of your state will slip beneath the waves by the end of this century. However, even if the engineers do try to abate the subsidence, the Mississippi doesn’t carry enough sediment to offset more than a small fraction of that loss, a new analysis suggests. pdboyer Tue, 30 Jun 2009 02:29:56 GMT http://www.nasa.gov/mission_pages/ostm/news/ostm-20081216.html Jason 2 satellite data shows increase of 3 mm/yr pdboyer Tue, 14 Jul 2009 13:14:58 GMT http://www.nasa.gov/mission_pages/ostm/news/ostm-20080730.html Less than a month after launch, the NASA-French space agency Ocean Surface Topography Mission (OSTM)/Jason 2 oceanography satellite has produced its first complete maps of global ocean surface topography, surface wave height and wind speed. The new data will help scientists monitor changes in global sea level and the distribution of heat in the ocean. This information is used to monitor climate change and ocean circulation, and to enable more accurate weather, ocean and climate forecasts. The data reveal patterns of sea level anomalies, which are used by scientists to calculate the speed and direction of ocean surface currents. pdboyer Tue, 14 Jul 2009 13:11:27 GMT http://www.nasa.gov/topics/earth/features/greenland_flights.html Imagine a piece of ice 1,000 miles long, 400 miles wide, and 2 miles thick in the center. That's the Greenland ice sheet. But that island-sized piece of ice is melting, so NASA researchers are flying to the Arctic this week to learn more about the nature of those changes. pdboyer Tue, 14 Jul 2009 12:02:20 GMT http://www.brightsurf.com/news/headlines/46634/New_crops_needed_for_new_climate.html Global food security changing climate depends nutritional value yield staple food crops. Researchers at Monash University Victoria, Australia found an increase toxic compounds, decrease protein content decreased yield plants grown under high CO2 drought c pdboyer Tue, 30 Jun 2009 02:18:29 GMT http://www.sciencenews.org/view/generic/id/45051/title/Ozone_hole_trims_polar_water%E2%80%99s_CO2-absorbing__power The ozone hole over Antarctica does more than let a little extra ultraviolet light reach ground level: It boosts ocean acidification in the waters surrounding the icy continent and reduces the amount of carbon dioxide emissions those waters can absorb. pdboyer Tue, 30 Jun 2009 02:33:41 GMT http://rst.gsfc.nasa.gov/Sect16/Sect16_1.html This Section surveys one general but vital idea and then addresses how the Earth Sciences community is responding to implementing the outgrowths of this idea. A new field seems to have emerged in the last 20 years. It goes by the imposing name: Earth System(s) Science. But, its ingredients have been around for a long time (some of the components make up the contents of Physical Geography textbooks). The basic notion is this: instead of treating such fields as meteorology, oceanography, botany, ecology, living creatures, aspects of geology, etc. as discrete, self-contained knowledge bases, recognize that they are all part of the same system that controls the Earth, and hence all pointed towards a central common theme, and then cross-link (integrate) the n... pdboyer Wed, 24 Jun 2009 02:35:32 GMT http://www.sciencedaily.com/search/?keyword=ice+sheets Global climate change and sea level rise due to melting of ice sheets around the globe. Includes video news storiesw pdboyer Sat, 27 Jun 2009 22:12:02 GMT http://books.nap.edu/catalog.php?record_id=12631&utm_medium=etmail&utm_source=National%20Academies%20Press&utm_campaign=NAP+mail+new+7.21.09&utm_content=Downloader&utm_term= During the 1990s, a government program brought together environmental scientists and members of the intelligence community to consider how classified assets and data could be applied to further the understanding of environmental change. As part of the Medea program, collection of overhead classified imagery of sea ice at four sites around the Arctic basin was initiated in 1999, and two additional sites were added in 2005. Collection of images during the summer months at these six locations has continued until the present day. Several hundred unclassified images with a nominal resolution of 1 meter have been derived from the classified images collected at the 6 Arctic sites. To assist in the process of making the unclassified derived imagery more widely ... pdboyer Thu, 23 Jul 2009 15:51:23 GMT http://www.scientificamerican.com/slideshow.cfm?id=what-does-carbon-capture-and-storage-look-like CARBON CAPTURE AND STORAGE: The new boiler at the Schwarze Pumpe power plant in Spremberg, Germany, captures 95 percent of the carbon dioxide (CO2) from its coal burning—a small demonstration of one option for capturing carbon and compressing it for transportation by pipeline or truck to a place where it can be buried or used. This photo was taken in October 2007 and shows the general layout of the carbon capture and storage addition to the 1,600 megawatt power plant. pdboyer Sun, 14 Jun 2009 15:33:09 GMT