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State of the Climate in 2015
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2016
Source: Bulletin of the American Meteorological Society, 97(8), Si-S275.Series: State of the Climate -
Journal Title:Bulletin of the American Meteorological Society
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Personal Author:
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NOAA Program & Office:
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Description:In 2015, the dominant greenhouse gases released into Earth’s atmosphere—carbon dioxide, methane, and nitrous oxide—all continued to reach new high levels. At Mauna Loa, Hawaii, the annual CO2 concentration increased by a record 3.1 ppm, exceeding 400 ppm for the first time on record. The 2015 global CO2 average neared this threshold, at 399.4 ppm. Additionally, one of the strongest El Niño events since at least 1950 developed in spring 2015 and continued to evolve through the year. The phenomenon was far reaching, impacting many regions across the globe and affecting most aspects of the climate system. Owing to the combination of El Niño and a long-term upward trend, Earth observed record warmth for the second consecutive year, with the 2015 annual global surface temperature surpassing the previous record by more than 0.1°C and exceeding the average for the mid- to late 19th century—commonly considered representative of preindustrial conditions—by more than 1°C for the first time. Above Earth’s surface, lower troposphere temperatures were near-record high.
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Source:Bulletin of the American Meteorological Society, 97(8), Si-S275.
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Rights Information:Other
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Compliance:Library
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Main Document Checksum:urn:sha256:a00eaa8b3725b2d1a10a6a609992d8994c47d05b0d92fafc772ab12a4b0aec02
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