Mitosis and Meiosis

Topics: Global warming, Carbon dioxide, Climate change Pages: 2 (628 words) Published: March 21, 2014
Long-term global warming trend sustained in 2013
1
January 21, 2014
Steve Cole,
NASA Headquarters
Leslie McCarthy,
NASA Goddard Institute for Space Studies
NASA scientists say 2013 tied with 2009 and 2006 for the seventh warmest year since 1880, continuing a long-term trend of rising global temperatures. With the exception of 1998, the 10 warmest years in the 134-year record have all occurred since 2000, with 2010 and 2005 ranking as the warmest years on record.

Global temperatures have risen from 1950 through the end of 2013. Reds and yellows show warmer than average temperatures. Credit: NASA Goddard Space Flight Center/Goddard Institute for Space Studies. Download the video NASA's Goddard Institute for Space Studies (GISS) in New York, which analyzes global surface temperatures on an ongoing basis, released an updated report Tuesday on temperatures around the globe in 2013. The comparison shows how Earth continues to experience temperatures warmer than those measured several decades ago. " 2013 adds to the evidence for ongoing climate change. "

- Dr. Gavin Schmidt, NASA Goddard Institute for Space Studies The average temperature in 2013 was 58.3 degrees Fahrenheit (14.6 Celsius), which is 1.1 F (0.6 C) warmer than the mid-20th century baseline. The average global temperature has risen about 1.4 degrees F (0.8 C) since 1880, according to the new analysis. Exact rankings for individual years are sensitive to data inputs and analysis methods. "Long-term trends in surface temperatures are unusual and 2013 adds to the evidence for ongoing climate change," GISS climatologist Gavin Schmidt said. "While one year or one season can be affected by random weather events, this analysis shows the necessity for continued, long-term monitoring." Scientists emphasize that weather patterns always will cause fluctuations in average temperatures from year to year, but the continued increases in greenhouse gas levels in Earth's atmosphere are driving a long-term rise...
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