Thursday, January 22, 2009
Seasonal Shift
According to a new study by many scientists from the University of California, Berkeley, and Harvord, the hottest day of the year has shifted to nearly two days earlier. Alexander R. Stine, a graduate student in UC Berkeley's Department of Earth and Planetary Science, was the first author of this reoport. Stine says that the cause of this shift in the cycle is most likely due to human activity. This seasonal shift which has occurred over land but not over water, researchers believe this is partially due to a particular pattern of winds that also has been changing over the same time period. This pattern of atmospheric circulation, is the most important wind pattern for controlling why one winter in the Northern Hemisphere is different from another. Stine and his co workers discovered using non-tropical data only, that while land temperatures in the 100-year period between 1850 and 1950 showed a simple pattern of variability, with the hottest day of the year in the Northern Hemisphere around July 21, temperatures in the period 1954-2007 peaked 1.7 days earlier.
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5 comments:
I enjoyed reading about this current even and how scientists are so accurately able to document and analyze small changes in the weather. I also thought it was interesting how the atmosphere was only altered over land and not over the ocean. However, I do think that the title could be a little more attention grabbing and I would enjoy being able to read a little more about how the scientists obtained their information about the weather. Overall I liked reading this article and found all the information interesting, good job.
I think this is very interesting and pretty well written, although there were a fair amount of details, he could've added more to it.
This is a very interesting article considering the current global debate on the effect that human activity has on the enviorment. It would be interesting to know if this is for certain do to human carbon releases.
I thought this was a very good article and it was well written, I alsothought that it was interesting because of the debate currently going on about global warming and humanitys impact on that. He could have had more details though.
This current event was well written. It focuses on the issue of global warming which is a huge topic today. I thought that the atmosphere that was only changed over land and not water was interesting. I believe you could have put more information in this article but other than that great job.
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