ScienceDaily: Since the Last Glacial Maximum (LGM; about 21,000 years ago) sea level has risen by 130 meters (430 feet), resulting in continental shelf submergence and a massive expansion of the surface area of shelf seas. Although shelf seas only account for 7 percent of the oceanic surface area, recent observations demonstrate that they host significant fluxes of carbon dioxide (CO2) between the ocean and atmosphere. Further, dissolved and particulate carbon are thought to be transported …