Frequently Asked Question 62Is the Current Climate Change Unusual Compared toEarlier Changes in Earth146s HistoryClimate has changed on all time scales throughout Earth146s history Some aspects of the ID: 893379
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1 Frequently Asked Questions Frequently As
Frequently Asked Questions Frequently Asked Question 6.2Is the Current Climate Change Unusual Compared toEarlier Changes in Earth’s History? Climate has changed on all time scales throughout Earth’s history. Some aspects of the current climate change are not unusual, but others are. The concentration of CO in the atmosphere has reached a record high relative to more than the past half-million years, and has done so at an exceptionally fast rate. Current global temperatures are warmer than they have ever been during at least the past ve centuries, probably even for more than a millennium. If warming continues unabated, the resulting climate change within this From the report accepted by Working Group I of the Interg
2 overnmental Panel on Climate Change but
overnmental Panel on Climate Change but not approved in detailFrequently Asked QuestionsFAQ Citation:These Frequently Asked Questions have been taken directly from the chapters of the underlying report and are collected here. When referencing speci c FAQs, please reference the corresponding chapter in the report from whence the FAQ originated.When referencing the group of FAQs, please cite as:Climate Change 2007: The Physical Science Basis. Contribution of Working Group I to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change [Solomon, S., D. Qin, M. Manning, Z. Chen, M. Marquis, K.B. Averyt, M.Tignor and H.L. Miller (eds.)]. Cambridge University Press, Cambridge, United Kingdom and New York, NY, USA.