The global average temperature over land and ocean surfaces for September 2014 was the highest for the month since record keeping began according to the U.S. National Oceanic and Atmospheric Administration (NOAA). January-September tied with 1998 as the warmest such period on record.
NOAA said the combined average temperature over global land and ocean surfaces for September 2014 was about 15.72°C (60.30°F) or 0.72°C (1.30°F) above the 20th century average of 15.0°C (59.0°F). Temperatures were warmer than average in most parts of the world.
It also marked the 38th consecutive September with a global temperature above the 20th century average. The last below-average global temperature for September occurred in 1976, according to NOAA’s National Climatic Data Center.
With the exception of February, every month to date in 2014 has been among its four warmest on record, with May, June, August and September all record warm. High ocean surface temperatures played a major role, in advance of the anticipated development of the warming El Niño event later this year.
NOAA said that if 2014 maintains the current temperature departure from average for the remainder of the year, 2014 will be the warmest year on record.
On September 17, Arctic sea ice reached its annual minimum extent at 1.94 million square miles, the sixth smallest in the 1979-2014 satellite record, according to the National Snow and Ice Data Center. On September 22, Antarctic sea ice reached its annual maximum extent at 7.76 million square miles, the largest in the 1979-2014 satellite record.
The Tokyo Climate Center, which is a WMO Regional Climate Centre, also reported that September was the hottest on record.
The record was also confirmed by data from NASA’s Goddard Institute for Space Studies.
WMO uses a combination of datasets to compile its annual Statement on the Status of the Global Climate. It will issue its provisional statement for 2014 in November.
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