News-environment 02 / 05 / 05 by CS
A research team led by James Hansen, director of space studies of the Goddard Institute of NASA, the US space agency calculated that the Earth was holding 0,85 watt (+/- 0,15) more energy per square meter that it did not emit a given period while the figure was only a few tenths of Watt before 1960. These results were published Thursday in Science Express.
According to James Hansen, author of the article, this energy imbalance is the index showing that scientific estimates of the impact of human activity on the climate are accurate.
These calculations have been done using computer models of oceanography and climate stations installed on buoys on the ocean or ground stations whose data are collected by satellites. According to his data, the level of the oceans has increased since 3,2 1993 centimeters and even if this change seems minimal, it turns out actually two times greater than that recorded throughout the last century.
Also keep the oceans as long as the ground heat and act as heat accumulators with a phenomenon that occurs in the deep ocean, and called "thermal inertia".
This means that if one was quitting completely anthropogenic emissions of greenhouse gases can be expected at an elevation of 0,6 degree Celsius.
In other words the author clearly states in its introduction that the reduction of GHG emissions should be promptly business and that if the world decides to have more evidence of atmospheric warming before acting, the thermal inertia phenomenon ocean climate change suggests a more important it will be exceedingly difficult if not impossible to avoid.