new research suggests that current estimates of phytoplankton growth in oceans and total carbon uptake, calculated through satellite imagery, might be overestimated. A new study, published online in

Projected anthropogenic warming and increases in CO2 concentration present a twofold threat, both from climate changes and from CO2 directly through increasing the acidity of the oceans. Future climate change may be reduced through mitigation (reductions in greenhouse gas emissions) or through geoengineering.

With Qatar's seawater temperature touching 37

oceans have cooled substantially during some of the warmest years in recent times, claims a study. During the years 2003 and 2005, which saw the highest global average surface temperatures in more

Monthly and 3-hourly precipitation data from twentieth-century climate simulations by the newest generation of 18 coupled climate system models are analyzed and compared with available observations. The characteristics examined include the mean spatial patterns, intraseasonal-to-interannual and ENSO-related variability, convective versus stratiform precipitation ratio, precipitation frequency and intensity for different precipitation categories, and diurnal cycle.

Fossil fuel burning releases about 25 Pg of CO2 per year into the atmosphere, which leads to global warming (Prentice et al., 2001). However, it also emits 55 Tg S as SO2 per year (Stern, 2005), about half of which is converted to sub-micrometer size
sulfate particles, the remainder being dry deposited. Recent research has shown that the warming of earth by the increasing concentrations of CO2 and other greenhouse gases is partially countered by some backscattering to space of solar radiation by

• Greenpeace's newest ship, Esperanza is out at sea. It will sail from the Azores to Antarctica, informing people on the way about the crisis faced by oceans. The expedition's primary focus is creating a global network of ocean parks, marine reserves.

Earth Commission on the rise

After a gap of about five years

This special report does not seek to paint a comprehensive picture of the state of the oceans. It does not set out to recapitulate the many years of debate on ocean overfishing. WBGU concentrates instead on those key linkages between climate change and the oceans that are the topic of new scientific insights.These insights include new findings on warming, ocean currents, sea-level rise, carbon uptake and acidification, and on the impacts of these factors upon marine ecosystems.The report also discusses in detail the development of tropical cyclones, the issues surrounding carbon storage in the ocean or under the seabed, and the risks associated with methane hydrate deposits in the sea floor. Many of these issues are closely interlinked