"Global warming is undeniable," and it's happening fast, a new U.S. government report says.
An in-depth analysis of ten climate indicators all point to a marked warming over the past three decades, with the most recent decade being the hottest on record, according to the latest of the U.S. National Atmospheric and Oceanic Administration's annual "State of the Climate" reports, which was released Wednesday, 28 July.
Reliable global climate record-keeping began in the 1880s. The report focused on climate changes measured in 2009 in the context of newly available data on long-term developments.
The NOAA report, published in the Bulletin of the American Meteorological Society, is different from other climate publications, because it's based on observed data, not computer models, making it the "climate system's annual scorecard," the authors wrote.
Full story from National Geographic
Past Decade Warmest on Record According to Scientists in 48 Countries (NOAA Press Release)