Figure 1. Departure of temperature from average for September 2014, the warmest September for the globe since record keeping began in 1880. Record warmth was notable in much of northwestern Africa, coastal regions of southeastern South America, southwestern Australia, parts of the Middle East, and regions of southeastern Asia. In total, 31 countries and territories from all seven continents around the world had at least one station that reported record warmth. Cooler than average temperatures were uncommon world-wide. Image credit: National Climatic Data Center (NCDC) .
September 2014 was Earth’s warmest September on record, the period January – September was tied with 1998 and 2010 as the warmest first three-quarters of any year on record, and the past 12 months–October 2013 through September 2014–was the warmest consecutive 12-month period among all months since records began in 1880, said NOAA’s National Climatic Data Center (NCDC) today. NASAalso rated September 2014 as the warmest September on record. If 2014 maintains the same temperature departure from average for the remainder of the year as was observed during January – September, it will be the warmest calendar year on record. September is the fourth time NOAA has ranked a 2014 month as the warmest on record; May, June, and August 2014 were also the warmest such months on record. (April 2014 was originally ranked as tied for warmest April on record, but has since been revised downwards to the second warmest April on record.) Global ocean temperatures during September 2014 were the warmest on record, and the 0.66°C (1.19°F) ocean temperature anomaly was the highest ever measured, beating the record set just the month previously in August 2014. Global land temperatures in September 2014 were the 6th warmest on record. Global satellite-measured temperatures in September 2014 for the lowest 8 km of the atmosphere were the 14th or 7th warmest in the 36-year record, according to Remote Sensing Systems and the University of Alabama Huntsville (UAH), respectively.
‘The planet as a whole is doing what was expected in terms of warming. Sea ice as a whole is decreasing as expected …’
Sea ice is expanding around Antarctica, and scientists say wind, snow and melting land ice are key factors in the growth bberwyn photo.
The map above shows Antarctic ice concentration on September 22, 2014, the date of the record high. Areas where the surface was less than 15% ice covered are deep blue; areas that were up to 100% ice covered are shades of light blue to white. The orange line shows the 1981-2010 median extent for September 22. (Median means in the middle: half of the years in the record had smaller ice extents than this, and half had larger extents.)
The graph below the map shows daily Antarctic sea ice extent over the course of the year. The black line traces the 1981-2010 average, and the gray shading shows the range of variability (2 standard deviations from the mean). The previous record high extent (2013) is a dashed green line; the 2014 year to date is a light green line. NSIDC reported that the 2014 extent rose nearly 4 standard deviations above the 1981-2010 mean. Courtesy NOAA.
By Summit Voice
FRISCO — Along with shifting wind patterns in the southern hemisphere, melting land ice may be contributing to recent record extents of floating sea ice around Antarctica. The melting ice and snow adds fresh water — which freezes morel easily — to the salty Southern Ocean, scientists said in a release this week, explaining the multi-year trend of expanding Antarctic sea ice.
(Washington Post): Florida has gone 3,270 days without a hurricane – nearly nine years and, by far, the longest stretch on record (the next longest streak is 5 seasons from 1980-1984, in records dating back to 1851). Meanwhile, the Sunshine state’s population and development have boomed.
Florida is long overdue for a destructive hurricane and has never had so many people and so much property in the way. This dangerous state of affairs is compounded by the potential for complacency and lack of recent experience. When hurricanes don’t strike over such a long period of time, some people may be lulled into a false sense of security and/or forget how horrible hurricanes can be.
The climate impacts typically associated with an El Niño during the months of December, January, and February. Credit: NOAA
But the reason we still care so much about it, following all of its tiny fluctuations toward becoming a full-blown El Niño, is that it can have important effects on the world’s weather, including in the U.S. It can even boost global temperatures, helping set the planet on the course to be the warmest year on record.
This September was the warmest on record since 1880–the year scientists first began to track global data on temperatures.
The National Aeronautics and Space Administration’s announcement clips on the heels of what was also the warmest August on record, which NASA said suggests an unfortunate trend in global heating.
The National Oceanic and Atmospheric Administration anticipates that an El Niño will start by the end of the year, due to warmer temperatures in the Pacific Ocean, and continue into spring 2015. An El Niño can have devastating impact across the globe, with repercussions that include abnormal temperatures and extreme weather. The last strong El Niño occurred in 1997-98.
More details will become available on global temperatures during the month of September when NOAA issues their monthly “State of the Climate” report in the coming days.