The year 2014 ranks as Earth’s warmest since 1880, according to two analyses released on Jan. 16. NASA scientists discussed the findings during live shot interviews on Jan. 16th.
NASA scientists track global temperatures as one way to measure how Earth’s climate is changing over time. Since 1880, the average global temperature has risen about 1.4 degrees Fahrenheit with most of that trend occurring in the last 30 years. Nine of the 10 warmest years in the modern record have occurred since 2000.
GCMD keywords can be found on the Internet with the following citation:
Olsen, L.M., G. Major, K. Shein, J. Scialdone, S. Ritz, T. Stevens, M. Morahan, A. Aleman, R. Vogel, S. Leicester, H. Weir, M. Meaux, S. Grebas, C.Solomon, M. Holland, T. Northcutt, R. A. Restrepo, R. Bilodeau, 2013. NASA/Global Change Master Directory (GCMD) Earth Science Keywords. Version 184.108.40.206.0