Showing posts from January, 2017

Arctic Ocean Feedbacks

The world is warming rapidly, and the Arctic is warming much more rapidly than the rest of the world. In December 2016, the temperature anomaly from latitude 83°N to the North Pole was 8 times as high as the global anomaly. Above forecast for February 6, 2017, shows that temperatures over parts of the Arctic Ocean will be as much as 30°C or 54°F higher than they were in 1979-2000. How can it be so much warmer in a place where, at this time of year, little or no sunlight is shining? The Arctic Ocean is warming particularly rapidly due to a multitude of feedbacks, some of which are illustrated on the image below. As the Arctic is warming more rapidly than the rest of the world, the temperature difference between the Arctic and the northern latitudes decreases, which makes the jet stream wavier. Jennifer Francis has written extensively about jet stream changes as a result of rapid warming in the Arctic. In the video below, Peter Sinclair interviews Jennifer Francis on these changes. Th

Can the world be saved without geoengineering?

Can the world be saved without geoengineering? What is your view? The Climate Plan includes the more effective and safe geoengineering methods as separate lines of action, next to emission cuts. There are discussions on this at the Climate Alert group . Feel encouraged to join in! In the following videos, a number of geoengineering methods are discussed. The videos were recorded in Marrakesh, Morocco, at the time of the UN climate negotiations that were held from 7-18 November 2016. Stuart Scott interviews Peter Wadhams, Hugh Hunt, Matthias Honegger and Douglas MacMartin. Geoengineering, our last chance? Can technology save us? Climate Engineering Governance Peter Wadhams - A Farewell to ice? In the video below, Jennifer Hynes interviews Stuart Scott and his work, including on the Nobel Peace Prize for Sustainable Development . From: January 2017. Check out earlier contributions by Jennifer Hynes In the video below, Paul Beckwith discusses some Carbon Dioxid

2016 well above 1.5°C

In December 2016, it was 6.58°C (11.84°F) warmer from latitude 83°N to the North Pole. In December 2016, the world as a whole was on average 0.82°C (1.47°F) warmer than in 1951-1980. Temperatures are rising fast, and especially so over the Arctic Ocean. In February 2016, the world was 1.34°C (2.41°F) warmer than 1951-1980, while part of the Kara Sea was 11.3°C (20.34°F) warmer than 1951-1980, as the image on the right illustrates. The 1951-1980 period is the default baseline used by NASA. When comparing the current temperature to years such as 1900 or 1750, the difference will be even larger, as illustrated by the image below. In 2016, the global temperature was well above the 1.5°C (2.7°F) guardrail set by the Paris Agreement. This is illustrated by the different baselines used in image below (the use of different baselines was discussed in an earlier post ), given that the Paris Agreement uses preindustrial levels as baseline. [ click on images to enlarge ] To some extent, the rise a

Global sea ice extent falling off chart

Global sea ice extent is falling off the chart, as illustrated by the image below. [ click on images to enlarge ] The National Snow & Ice Data Center (NSIDC) is one of the world's best-know archives for satellite data on sea ice. In its recent news release , NSIDC notes that the difference between the 1981-2010 average global sea ice extent and the 2016 extent was over 4 million km² in mid-November 2016 (image on the right). The fall in sea ice extent constitutes a huge amount of energy that is no longer reflected back into space and is instead absorbed by the ocean, the atmosphere and by the process of melting itself. In line with earlier calculations by Professor Peter Wadhams, a 4 million km² sea ice decrease could equate to a radiative forcing of as much as 1.3 W/m². All this extra energy does not directly translate into a rise in temperature of the atmosphere, since a lot of energy has over the past few decades been absorbed by the ocean and has also gone into the process

Canadian Arctic Archipelago Hit By M5.8 Earthquake

An earthquake with a magnitude of 5.8 on the Richter scale hit the Canadian Arctic Archipelago on January 8, 2017. Above image was created with USGS (United States Geological Survey) content . The image shows the epicenter of the quake (gold star). The earthquake hit Barrow Strait on January 8, 2017 at 23:47:12 (UTC), at 74.320°N - 92.305°W and at a depth of 18.9 km. Another earthquake hit Barrow Strait on January 9, 2017, this time with a magnitude of 5.2 on the Richter scale, within a day of the earlier M5.8 quake (both in orange on map below). These two earthquakes are among the largest quakes to hit the area in the past five years (map area shows all M1+ quakes since January 9, 2012). These earthquakes are important, given their magnitude and given that they hit an area without large faultlines (though earthquakes are not uncommon here, also see this discussion ). Importantly, these earthquakes occurred in an area prone to glacial isostatic adjustment, as illustrated by the image b

Most Important Videos Uploaded In December 2016

Peter Wadhams is interviewed by Stuart Scott , Executive Director of  United Planet Faith & Science Initiative , in this video called  Farewell to Arctic Ice , uploaded December 27, 2016, and recorded at UN climate negotiations in Marrakesh, Morocco. Peter Wadhams is an 'expeditionary' scientist and Emeritus Professor of Ocean Physics from Cambridge. Peter Wadhams' observations of the Arctic ice for over 4 decades makes him one of the worlds authorities on the subject. In the video, Peter Wadhams discusses some of the issues described in his current book  A Farewell to Ice  (right), which is available as hardback or ebook (256 pages, published September 1, 2016). For more, view some of the recent posts at Arctic-news blog, such as: Accelerated Warming of the Arctic Ocean Monthly CO₂ not under 400 ppm in 2016 Seafloor Methane  and Sea ice is shrinking Below is the sea ice volume image (created by Wipneus ) that is discussed in the video. Mark Jacobson gave a presentati