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6 Responses to “Global Climate”

  1. LAP said

    Global Climate Report – July 2018 [NOAA/ NCDC]

    Climatologically, July marks the middle of the Northern Hemisphere summer and Southern Hemisphere winter.

    The July 2018 average temperature across the world’s land and ocean surfaces was 0.75°C (1.35°F) above the 20th century average of 15.8°C (60.4°F) and the fourth highest for July since global records began in 1880. Nine of the ten warmest Julys have occurred since 2005, with the last four years (2015–2018) among the four warmest on record. The record warmest July occurred in 2016, with a temperature departure from average of +0.88°C (+1.58°F). The year 1998 is the only year from the 20th century among the ten warmest Julys on record, ranking as the fifth highest on record.

    July 2018 was characterized by warmer to much-warmer-than-average temperatures across much of the global land and ocean surfaces. The most notable warm temperature departures from average occurred across the Northern Hemisphere, specifically the western contiguous U.S., eastern Canada, northern Africa, eastern China, and much of Europe and western Asia where temperature departures from average were +2.0°C (+3.6°F) or higher. Some of these locations also had record warm temperatures during July 2018, as well as some areas across the oceans. Cooler to much-cooler-than-average conditions were limited to central and eastern parts of Russia, northern Canada, southern South America and surrounding oceans, and parts of the Atlantic Ocean. However, no land or ocean areas had record cold July temperatures.

    The globally-averaged temperature across land surfaces was the fifth highest on record, while the global ocean temperature tied with 2013 as the sixth highest in the 139-year record. According to NCEI’s Regional Analysis, five of six continents had a July temperature that ranked among the nine highest since continental records began in 1910, with Europe and Africa having their second warmest July on record. Meanwhile, South America had its coolest July temperature since 2012.

    There were several episodes of intense heat waves during July 2018. According to NCEI’s Daily Weather Records Tool, as of 31 July 2018 there were 183 (232) stations across the globe that recorded new high maximum (minimum) temperatures for July. There were 69 (96) stations across the globe that set during July 2018 new all-time high maximum (minimum) temperatures.

    Year-to-date (January–July)

    The first seven months of the year were characterized by warmer to much-warmer-than-average conditions across much of the globe, with record warm temperatures scattered across all oceans and across most continents. Averaged as a whole, the January–July 2018 global temperature departure from average of +0.77°C (+1.39°F) was the fourth highest temperature for such period in the 139-year record, trailing behind 2016 (+1.04°C / +1.87°F), 2017 (+0.89°C / +1.60°F), and 2015 (+0.85°C/ +1.53°F). The global land surface temperature for July 2018 was 1.19°C (2.14°F) above the 20th century average and tied with 2007 as the fourth highest on record. The global ocean temperature was also fourth highest (tied with 2010) on record at +0.61°C (+1.10°F).

    Based on three simple scenarios, 2018 will likely end up among the five warmest years on record.

    According to NCEI’s Regional Analysis, five of six continents had a July temperature that ranked among the ten warmest on record, with Europe having its third warmest year-to-date on record.

    NOAA National Centers for Environmental Information, State of the Climate: Global Climate Report for July 2018, published online August 2018, retrieved on August 19, 2018 from https://www.ncdc.noaa.gov/sotc/global/201807.

  2. JFC said

    State of the Climate in 2017
    Bulletin of the American Meteorological Society
    https://www.ametsoc.net/sotc2017/StateoftheClimate2017_lowres.pdf

    2017 was one of three warmest years on record: State of the Climate Report
    http://www.noaa.gov/news/2017-was-one-of-three-warmest-years-on-record-international-report-confirms

    2017 was the third-warmest year on record for the globe, behind 2016 (first) and 2015, according to the 28th annual State of the Climate report. The planet also experienced record-high greenhouse gas concentrations as well as rises in sea level.

    http://www.noaa.gov/sites/default/files/styles/scale_crop_1120x534_2x/public/thumbnails/image/GRAPHIC%20-%20Number%20of%20hot%20days%20each%20year%20since%201950%20relative%20to%20the%201961-1990%20baseline_BAMS%20-%20NOAA%20-%201125×534%20-%20Landscape.png?itok=YBdUFrcK

    Key findings from the international report include:

    Levels of greenhouse gases were the highest on record. Major greenhouse gas concentrations in the atmosphere – including carbon dioxide (CO2), methane and nitrous oxide – reached new record highs. The 2017 average global CO2 concentration was 405 parts per million, the highest measured in the modern 38-year global climate record and records created from ice-core samples dating back as far as 800,000 years.

    Sea level rise hit a new high – about 3 inches (7.7 cm) higher than the 1993 average. Global sea level is rising at an average rate of 1.2 inches (3.1 cm) per decade.

    Heat in the upper ocean hit a record high, reflecting the continued accumulation of thermal energy in the uppermost 2,300 feet of the world’s oceans.

    Global land and ocean combined surface temperature reached a near-record high. Depending on the dataset, average global surface temperatures were 0.68-0.86 of a degree F (0.38-0.48 of a degree C) above the 1981-2010 average. This marks 2017 as having the second or third warmest annual global temperature since records began in the mid- to late 1800s.

    Sea surface temperatures hit a near-record high. Though the global average sea surface temperature in 2017 was slightly below the 2016 value, the long-term trend remained upward.

    Drought dipped and then rebounded. The global area of drought fell sharply in early 2017 before rising to above-average values later in the year.

    Arctic maximum sea ice coverage fell to a record low. The 2017 maximum extent (coverage) of Arctic sea ice was the lowest in the 38-year record. The September 2017 sea ice minimum was the eighth lowest on record, 25 percent smaller than the long-term average.

    The Antarctic also saw record-low sea ice coverage, which remained well below the 1981-2010 average. On March 1, 2017, the sea ice extent fell to 811,000 square miles (2.1 million square kilometers), the lowest observed daily value in the continuous satellite record that began in 1978.

    Unprecedented multiyear coral reef bleaching continued: A global coral bleaching event spanned from June 2014 through May 2017, resulting in unprecedented impacts on reefs. More than 95 percent of coral in some affected reef areas died.

    The total number of tropical cyclones were slightly above average overall. There were 85 named tropical cyclones in 2017, slightly above the 1981-2010 average of 82 storms.

    More: Access highlights from the BAMS State of the Climate in 2017 report: https://www.ametsoc.org/ams/index.cfm/publications/bulletin-of-the-american-meteorological-society-bams/state-of-the-climate/

  3. LAP said

    June 2018 was characterized by warmer-than-average conditions across much of the land and ocean surfaces, with the most notable warm temperature departures from average across central Asia where temperatures were 4.0°C (7.2°F) above average or higher. Record warm June temperatures were present across parts of central Asia as well as portions of the Atlantic, Pacific, and Indian Oceans, and Mediterranean Sea.

    The globally-averaged temperature across land and ocean surfaces was the fifth highest on record for June at 0.75°C (1.35°F) above the 20th century average of 15.5°C (59.9°F). The ten warmest Junes on record have occurred since 2005, with 2016 the warmest June at +0.91°C (+1.64°F). June 2018 also marks the 42nd consecutive June and the 402nd consecutive month with temperatures, at least nominally, above the 20th century average.

    Averaged as a whole, the combined land and ocean surface temperature for the globe during January–June 2018 was 0.77°C (1.39°F) above the 20th century average and the fourth highest since global records began in 1880. The global land-only temperature was the fifth highest on record at +1.19°C (+2.14°F). The global ocean-only temperature of 0.60°C (1.08°F) above average was also the fifth highest on record.
    https://www.ncdc.noaa.gov/sotc/global/201806

  4. PAS said

    Global Climate Report – May 2018
    https://www.ncdc.noaa.gov/sotc/global/20180 – 5

    Warmer-than-average conditions engulfed much of the world’s land and ocean surfaces, giving way to the fourth highest May temperature since global records began in 1880. The May 2018 combined average temperature over the global land and ocean surfaces was 0.80°C (1.44°F) above the 20th century average of 14.8°C (58.6°F). The years 2014–2018 rank among the five warmest Mays on record, with 2016 the warmest May at +0.88°C (+1.58°F). May 2018 also marks the 42nd consecutive May and the 401th consecutive month with temperatures, at least nominally, above the 20th century average. The most notable warm temperature departures from average during May 2018 were present across much of the contiguous U.S. and Europe, where temperatures were 3.0°C (5.4°F) above average or higher.

    The global land surface temperature for May 2018 was the coolest May since 2011 and tied with 2013 as the seventh highest in the 139-year record at 1.14°C (2.05°F) above the 20th century average of 11.1°C (52.0°F). The global oceans had their smallest temperature departure for May since 2014 and was also the fourth highest May temperature on record at 0.66°C (1.19°F) above the 20th century average of 16.3°C (61.3°F).

    Europe had its warmest May since continental records began in 1910 at +2.76°C (4.97°F), surpassing the previous record set in 2003 by +0.92°C (+1.66°F). May 2018 marks the first time in May that the continental temperature departure from average is 2.0°C (3.6°F) or higher. May 2018 was the 11th highest monthly temperature departure among all 1,313 months on record. The highest monthly temperature departure for Europe is February 1990 at +3.91°C (+7.04°F).

    The global land and ocean surface temperature for March–May 2018 was 0.82°C (1.48°F) above the 20th century average of 13.7°C (56.7°F) and the fourth warmest such period in the 139-year records, trailing behind 2016 (+1.07°C / +1.93°F), 2017 (+0.91°C / +1.64°F), and 2015 (+0.85°C / +1.53°F). Globally, the average land surface temperature was the fifth highest March–May on record at 1.30°C (2.34°F) above the 20th century average of 8.1°C (46.4°F). The global ocean temperature was 0.64°C (1.15°F) above the 20th century average of 16.1°C (61.0°F) and was also the fourth highest on record.

    The global land surface temperature during January–May 2018 was 1.21° (2.18°F) above the 20th century average of 6.0°C (42.8°F)—tying with 2002 as the fifth highest such period since global records began in 1880. According to NCEI’s Regional Analysis, five of six continents had a January–May temperature that ranked among the eight warmest such periods on record, with Oceania having its second warmest such period on record. Across the oceans, the January–May 2018 global oceans temperature was 0.60°C (1.08°F) above the 20th century average of 16.0°C (60.8°F) and the fifth warmest such period on record.

    NOAA National Centers for Environmental Information, State of the Climate: Global Climate Report for May 2018, published online June 2018, retrieved on July 16, 2018 from https://www.ncdc.noaa.gov/sotc/global/201805.

  5. LMR said

    LMR – 062202

    Global Climate Report: May 2018 | March – May 2018 [NOAA]

    Much of North America had warmer-than-average conditions during May 2018. According to NCEI’s Regional Analysis, May 2018 temperature North America was 1.74°C (3.13°F) above average—the second highest May temperature, behind the record year 1998 (+1.94°C / +3.49°F).

    Europe had its warmest May since continental records began in 1910 at +2.76°C (4.97°F), surpassing the previous record set in 2003 by +0.92°C (+1.66°F). May 2018 marks the first time in May that the continental temperature departure from average is 2.0°C (3.6°F) or higher. May 2018 was the 11th highest monthly temperature departure among all 1,313 months on record. The highest monthly temperature departure for Europe is February 1990 at +3.91°C (+7.04°F).

    Warmer-than-average conditions engulfed much of the world’s land and ocean surfaces, giving way to the fourth highest May temperature since global records began in 1880. The May 2018 combined average temperature over the global land and ocean surfaces was 0.80°C (1.44°F) above the 20th century average of 14.8°C (58.6°F). The years 2014–2018 rank among the five warmest Mays on record, with 2016 the warmest May at +0.88°C (+1.58°F). May 2018 also marks the 42nd consecutive May and the 401th consecutive month with temperatures, at least nominally, above the 20th century average.

    Warmer-than-average conditions were present across much of the global land and ocean surfaces during March–May. Record warm temperatures during the three-month period were present across parts of southern Europe, the Middle East, northeastern Africa, China, Mongolia, and scattered across the South America, Atlantic, Indian, and Pacific Oceans. Cooler-than-average conditions were present across western Russia, north Atlantic (off the southern coast of Greenland), central Indian Ocean, and the eastern and central tropical Pacific Ocean. No land or ocean areas had record cold temperatures during March–May 2018. According to NCEI’s Regional Analysis, five of the six continents had a March–May temperature that ranked among the nine warmest such periods on record, with Europe and South America having their third warmest such period on record.

    The global land and ocean surface temperature for March–May 2018 was 0.82°C (1.48°F) above the 20th century average of 13.7°C (56.7°F) and the fourth warmest such period in the 139-year records, trailing behind 2016 (+1.07°C / +1.93°F), 2017 (+0.91°C / +1.64°F), and 2015 (+0.85°C / +1.53°F). Globally, the average land surface temperature was the fifth highest March–May on record at 1.30°C (2.34°F) above the 20th century average of 8.1°C (46.4°F). The global ocean temperature was 0.64°C (1.15°F) above the 20th century average of 16.1°C (61.0°F) and was also the fourth highest on record.

    The average global land and ocean surface temperature for January–May 2018 was 0.77°C (1.39°F) above the 20th century average of 13.1°C (55.5°F)—tying with 2010 as the fourth highest global land and ocean temperature for January–May in the 1880–2018 record.

    The top five warmest January–May periods were: 2016 (1st), 2017 (2nd), 2015 (3rd), 2010 (4th), and 2018 (4th).

    Arctic sea ice extent for May 2018 was 12.2 million square kilometers (4.7 million square miles). This was the second lowest May extent in the 39-year satellite record, and is 310,000 square kilometers (120,000 square miles) above May 2016, the record low for the month. [https://nsidc.org/arcticseaicenews/2018/06/]

    Sea ice extent in the Southern Ocean grew steadily in May at the rate of 123,000 square kilometers (47,000 square miles) per day, somewhat faster than the 1981 to 2010 average growth rate of 108,000 square kilometers (42,000 square miles) per day. This pushed Antarctic ice extent from third lowest at the start of the month to sixth lowest by June 1. [https://nsidc.org/arcticseaicenews/2018/06/]

    NOAA National Centers for Environmental Information, State of the Climate: Global Climate Report for May 2018, published online June 2018, retrieved on June 19, 2018 from https://www.ncdc.noaa.gov/sotc/global/201805.

  6. JJ said

    Contiguous U.S. had its warmest May on record
    http://noaa.gov/news/contiguous-us-had-its-warmest-may-on-record

    Each state was warmer than average, record precipitation in the East

    In May, the U.S. sizzled with record warmth. It also had drenching rains in the East,
    with lingering drought conditions in the Southwest and Great Plains.

    May 2018
    The average May temperature across the contiguous U.S. was 65.4 degrees F, 5.2 degrees above average, making it the warmest May in the 124-year record, according to scientists at NOAA’s National Centers for Environmental Information. This surpassed the previous record of 64.7°F set in 1934, during the dust bowl era. There were more than 8,590 daily warm station records broken, or tied, in May.

    The average precipitation for May was 2.97 inches (0.06 inch above average), which ranked near the middle of the record books. Two weather systems, including Subtropical Storm Alberto, helped bring record and near-record rain across the Southeast and Mid-Atlantic. Meanwhile, more than a quarter of the contiguous U.S. remained in drought.

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