Climate change skeptics used the recent slowdown in observed surface warming to claim that 20th century warming was temporary and that the Earth would return to lower average annual temperatures. They offered up many potential explanations for the slowdown, none of which make physical sense. The Sun’s 11-year cycle (often used to explain away warming), a primary argument brought forth, is not the reason: this cycle’s solar maximum is near at hand, yet warming has slowed down recently.
|By: WeatherDem Monday March 4, 2013 7:15 pm|
|By: WeatherDem Tuesday January 22, 2013 6:30 pm|
According to data released by NASA and NOAA this week, 2012 was the 9th or 10th warmest year (respectively) globally on record. NASA’s analysis produced the 9th warmest year in its dataset; NOAA recorded the 10th warmest year in its dataset. The two agencies have slightly different analysis techniques, which in this case resulted in not only different temperature anomaly values but somewhat different rankings as well.
|By: WeatherDem Tuesday January 15, 2013 3:56 pm|
Global polar sea ice area in early January 2013 remains below climatological normal conditions (1979-2009), but has improved in the past month. Antarctic sea ice loss is occurring at a climatological normal rate. Arctic sea ice gain is slightly more rapid than normal, but we should expect this given the record low extent that occurred in September 2012. Polar sea ice recovered from an extensive deficit of -2.5 million sq. km. area late last year to a -500,000 sq. km. anomaly within the last week.
|By: WeatherDem Wednesday January 9, 2013 3:47 pm|
It’s official: 2012 was indeed the hottest year in 100+ years of record keeping for the contiguous U.S. (lower 48 states). The record-breaking heat in March certainly set the table for the record and the heat just kept coming through the summer. The previous record holder is very noteworthy. 2012 broke 1998′s record by more than 1°F! Does that sound small? Let’s put in perspective: that’s the average temperature for thousands of weather stations across a country over 3,000,000 sq. mi. in area for an entire year.
|By: WeatherDem Sunday September 23, 2012 5:00 pm|
The state of global polar sea ice area in mid-September 2012 remains significantly below climatological normal conditions (1979-2009). Arctic sea ice loss is solely responsible for this condition. In fact, if Antarctic sea ice were closer to its normal value, the global area would be much lower than it is today. Arctic sea ice melted quickly in August and the first half of September because it was thinner than usual and winds helped push ice out of the Arctic where it could melt at lower latitudes; Antarctic sea ice has refrozen at a faster than normal rate during the austral winter. Polar sea ice recovered from an extensive deficit of -2 million sq. km. area late last year to a +750,000 sq. km. anomaly in March 2012 before falling back to a -2.2 million sq. km. deficit earlier this month.
|By: WeatherDem Sunday September 9, 2012 4:00 pm|
Nature Climate Change‘s most recent issue included a paper by Kevin Anderson and Alice Bows entitled, “A new paradigm for climate change” [subs. req'd]. Kevin works at the Tyndall Centre for Climate Change Research, School of Mechanical Civil and Aerospace Engineering and Alice works at the Sustainable Consumption Institute, School of Mechanical Civil and Aerospace Engineering, University of Manchester. The discussion and arguments in the paper aren’t exactly novel if you’ve paid attention to the policy side of the climate change topic but bears examination as much as other works on the climate-policy interface, in which I am very interested.
|By: Josh Nelson Monday June 28, 2010 6:45 pm|
Speaking at a sparsely-attended luncheon in Fairbanks, AK on Friday, Senator Murkowski (R-AL) touted her failed effort to block the EPA from regulating greenhouse gas emissions as a ‘badge of honor.’ She went on to explain why she considered the maneuver, which went down by a 53-47 margin on June 10th, a qualified success. “We made our point. Forty-seven members of the Senate said they do not want to allow the agency to set climate change policy,” she said.