Study Sheds New Light On Global Warming


Science Daily – April 23, 2007

I really like articles that discuss that we are advancing our knowledge on the climate and the things that can influence it.  This is a very good article regarding a researcher at the University of Sheffield that has developed an innovative index which measures changes in wind and storminess over long periods of time.

Once again, I simply do not understand how one can already arrive at a conclusion on this subject when it seems like every week we read about a scientist that has discovered something new or developed a new understanding.  It is particularly bothersome when we find out that current models are not correct on simple things like the storms in the Atlantic (probably the most studied ocean in the world since it has been traveled regularly for 500 years).

The index of day-to-day (24-hour) atmospheric pressure variability, will help researchers study both natural and human-induced greenhouse gas climate variations on a global scale. An extended index will also give information on atmospheric pressure fluctuations across various scales of space and time from local through to global and from sub-hourly through to monthly. It will therefore provide a more complete and detailed contemporary long-term record of changes in storminess.

Current measures, including the North Atlantic Oscillation (NAO) index, are unable to provide adequate long-term perspectives and are often subject to uncertainties. For example, current research suggests that there are large natural variations in storminess in the North East Atlantic. However the North East Atlantic is no stormier now than it was around 100 years ago.

With the help of international partners, including the Hadley Centre and Danish Meteorological Institute, the project is currently being extended to provide a new global index of pressure variations and storminess.

You can read the original story here.

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