October 16, 2012
September 2012 temperatures as compared to 1981-2010 baseline. Graph courtesy of NOAA. Click to enlarge.
The NOAA says that temperatures have been steadily on the rise this year as La Niña conditions faded around February. Currently we are in a neutral phase, bordering on an El Nino.
"If this warmth continues through the end of the year, 2012 will surpass 2011 as the warmest La Niña year since the Climate Prediction Center began monitoring ENSO conditions in 1950," reads the NOAA report.
To date (from January through September) 2012 is the eighth warmest year on record with data going back to 1880. How 2012 measures up in total depends on global temperatures through the rest of the year. Currently, data sets show 2005 and 2010 as the warmest years on record.
Global temperature have risen by around 0.8 degrees Celsius (1.44 degrees Fahrenheit) over the past century due to anthropogenic climate change. Greenhouse gas emissions worldwide, which trap heat in the atmosphere, continue to rise despite decades of attention to the crisis.
Over 70 percent of Americans: climate change worsening extreme weather
(10/10/2012) According to a new poll, 74 percent of Americans agree that climate change is impacting weather in the U.S., including 73 percent who agreed, strongly or somewhat, that climate change had exacerbated record high temperatures over the summer. The findings mean that a large majority of Americans agree with climatologists who in recent years have found increasingly strong evidence that climate change has both increased and worsened extreme weather events.
Nary a mention of climate change during U.S. presidential debate
(10/04/2012) The hour-and-a-half long debate between President Barack Obama and ex-governor Mitt Romney last night ended without a single reference to climate change. Frustrated with the lack of discussion on the issue from both candidates, environmental activists sent a petition with over 160,000 signatures to debate moderator, Jim Lehr, urging him to ask a question about climate change. The petition fell on deaf ears.
Sea ice falls to record low with over two weeks of melting left
(08/27/2012) One of the most visible impacts of climate change—melting summer sea ice in the Arctic—just hit a new milestone. Scientists with the U.S. National Snow and Ice Data Center (NSIDC) have declared that this year's Arctic sea ice extent dipped below the previous record set in 2007 as of yesterday. The record is even more notable, however, as it occurred more than a fortnight before the Arctic's usual ice melt season ends, meaning the old record will likely not just be supplanted, but shattered.
Arctic sea ice approaches another record melt
(08/22/2012) Sea ice extent in the Arctic is very near to beating the previous record low set in 2007, according to the U.S. National Snow and Ice Data Center. Researchers told Reuters that they expect the record to be beaten by the end of month, well over a week before the melt season ends in the frozen north.
Fourth warmest July yet around the world
(08/20/2012) Last month was the fourth warmest July in the record books going back to 1880 worldwide, according to new data released by the National Oceanic and Atmospheric Administration (NOAA). It was notably warmer in the Northern Hemisphere than in the South: the month was the warmest July ever in the North. Worldwide temperatures were 0.62 degrees Celsius (1.12 degrees Fahrenheit) above the 20th Century average.
Greenland suffers record melt
(08/16/2012) Four weeks before Greenland's melting season usually ends, it has already blown past all previous records. By August 8th, nearly a month before cooler weather usually sets in around the world's largest island, the island toppled the past record set in 2010.