Posts

Showing posts from December, 2015

2015 warmest year on record

Image
1.1°C or 34.1°F at the North Pole The year 2015 is shaping up to be the warmest year on record. In the media, a lot of attention has been given to the many floods, droughts, wildfires and heatwaves that have battered the world this year. Sadly, though, little attention is given to the situation in the Arctic. The image on the right shows a forecast for December 30, 2015, with temperatures at the North Pole above freezing point, as further illustrated by the nullschool.net image below, showing a temperature forecast of 1.1°C or 34.1°F for the North Pole. Wind speed at the North Pole is forecast to be  105 mph or 168 km/h  on December 30, 2015, and  133 mph or 215 km/h  closer to Svalbard. As the image below illustrates, very high temperatures are forecast to hit the Arctic Ocean on December 30, 2015. Above image shows temperature anomalies at the highest end of the scale for most of the Arctic Ocean, with a temperature anomaly for the Arctic as a whole of 2.4°C or 4.32°F above what was

Paris Agreement

Image
At the Paris Agreement, nations committed to strengthen the global response to the threat of climate change by holding the increase in the global average temperature to well below 2°C above pre-industrial levels and to pursue efforts to limit the temperature increase to 1.5°C above pre-industrial levels. How much have temperatures risen already? As illustrated by above image, NASA data show that during the three-month period from September through November 2015, it was ~1°C warmer than it was in 1951-1980 (i.e the baseline). A polynomial trend based on the data from 1880 to 2015  for these three months indicates that a temperature rise of 1.5°C compared to the baseline will be reached in the year 2024. Let's go over the calculations. The trendline shows it was ~0.3°C colder in 1900 compared to the baseline. Together with the current ~1°C rise, that implies that since 1900 there's been a rise of 1.3°C compared to the baseline. This makes that another rise of 0.2°C by 2024, as p

Strong winds and High Waves hit Arctic Ocean

Image
Strong winds and high waves are hitting the Arctic Ocean from both the Atlantic Ocean and the Pacific Ocean. Above image shows waves as high as 12.36 m or 40.5 ft near Greenland on December 8, 2015. The image on the right shows cyclonic winds with speeds as high as 142 km/h or 88 mph near Greenland on December 8, 2015. The image further down on the right shows that waves as high as 14.04 m or 46.1 ft are forecast to hit the Aleutian Islands on December 13, 2015. Strong winds and high waves are forecast to subsequently keep moving in the direction of the Arctic Ocean. The image below shows strong winds and high waves that are heading for Arctic Ocean, with waves as high as 17.18 m or 56.4 ft forecast to be moving toward the Arctic Ocean on December 13, 2015. As warming continues, this situation can be expected to get worse, with extreme weather events hitting the Arctic Ocean with ever greater intensity. The  video below , created with  Climate Reanalyzer  images, shows strong winds ove

Ocean Heat Depth

Image
Ocean heat at the equator On November 24, 2015, equatorial waters at ≈100 m (328 ft) depth at 110-135°W were over 6°C (10.8°F) warmer than average in 1981-2000, as illustrated by above image. The animation below shows equatorial ocean heat over the past few months, illustrating that temperature anomalies greater than 6°C (10.8°F) occurred throughout this period at depths greater than 100 m (328 ft). The danger of ocean heat destablizing clathrates in the Arctic The danger is that ever warmer water will reach the seafloor of the Arctic Ocean and destabilize methane that is held there in sediments the form of free gas and hydrates. So, how comparable is the situation at the equator with the situation in the Arctic? How much heating of the Arctic Ocean has taken place over the past few years? The image on the right, produced with NOAA data, shows mean coastal sea surface temperatures of over 10°C (50°F) in some areas in the Arctic on August 22, 2007. In shallow waters, heat can more easi