rani799ah@gmail.com

Showing posts with label Peter Wadhams. Show all posts
Showing posts with label Peter Wadhams. Show all posts

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 presentation called How the Future of Energy Impacts the Future of Our Cities, as part of the Digital Cities Summit, October 2016. The video was uploaded on 7 Dec 2016 by Stanford University School of Engineering.


Imagine a future where the entire U.S. energy infrastructure runs on clean, renewable energy. It’s possible to do it by 2050, says Stanford civil and environmental professor Mark Jacobson, and even without any new technologies. Mark Jacobson laid out the hidden upside of using solar, wind and water resources – rather than burning fossil fuels – to power everything from appliances and machinery to cars and building systems. “If you electrify everything, something magical happens. Without really changing your habits, you can reduce power demand by about 42%,” Mark Jacobson says.

Such a huge reduction in power demand comes mostly from the efficiency gains of electricity over combustion and eliminating the energy needed to mine, transport and refine fossil fuels. In addition to the pure energy savings, Mark Jacobson estimates that we could avoid 4 million to 7 million deaths from air pollution, eliminate $15 trillion to $25 trillion in global warming costs, create 17 million more jobs than would be lost if we don’t transition, and reduce the energy poverty of up to 4 billion people worldwide.

For more, click on the links at Roadmaps to convert 139 countries of the world to Wind, Water, and Sunlight (WWS) for all purposes.



Paul Beckwith produced a two-part video, called 'Abrupt Climate Disrupting Arctic Changes'. The first part is at Part 1 of 2 and the second video, featured below, is at Part 2 of 2. The videos were uploaded on December 30, 2016.


In the videos, Paul Beckwith describes that gut-wrenching disruptions are underway in the Arctic, including record-high temperatures, near-record summer ice loss and spring snow cover loss, and record low sea-ice winter growth.

This second video is particularly interesting at the segment from 8:30 to 12:00 minutes, where Paul Beckwith discusses how wind patterns are changing over the Arctic and how this will make the Beaufort Gyre and other ocean currents reverse when we get complete sea-ice loss.

For more on this, see also the post Accelerating Warming of the Arctic Ocean.



Peter Wadhams also featured in this video interview by Jennifer Hynes for ExtinctionRadio, uploaded December 29, 2016.


There is also a shorter version of this interview, without music.

The interview is part of episode 62 at ExtinctionRadio.net, uploaded December 28, 2016. This episode also includes interviews by host Mike Ferrigan with Paul Beckwith and Tim Garett.



Guy McPherson gave a presentation at the Fayetteville Free Library in Syracuse, New York, on December 22, 2016. Part 1 is the presentation, featured below. Part 2 covers questions and answers, following the presentation. The videos were uploaded December 27, 2016.



Two images used in the presentation are added below.

On the right, the elements adding up to a potential global temperature rise by 2026 of over 10 degrees Celsius (18 degrees Fahrenheit), from the Extinction page. For more, also view the Temperature page at Arctic-news.blogspot.com

Below, the timeline of Earth's temperature in history after a graph by Chris Scotese, from The Politics and Science of Our Demise.
For more, also view the Climate Change Summary and Update at GuyMcPherson.com

An earlier presentation was given by Guy McPherson in Wellington, New Zealand. The presentation was given at Victoria University in Wellington and was streamed live at 6:00 p.m. New Zealand time on 6 December 2016. The video was uploaded on December 7, 2016.

Action must be taken now


Some of the world's most preeminent climate scientists, all experts with many decades of experience in their respective field, are warning that effective action must be taken now to avoid catastrophe.

These scientists, and many others, have made valuable and much-appreciated contributions to the Arctic-news blog over the years [note: contributors each express their own views in posts and may or may not endorse other content of this blog].

Sam Carana, editor of this blog, has for years supported the calls of these scientists, also discussing and sharing their calls at facebook groups such as Arctic-News, Electric TransportRenewables and Climate Alert.


Furthermore, Sam Carana has called for specific action for years, including support for biochar, preferably through feebates. More specifically, Sam Carana recommends that revenues raised from fees imposed on sales of livestock products, nitrogen fertilizers and Portland cement are used to fund support for soil supplements, as illustrated by above image. For more on biochar, see this blog and this facebook group.

For years, Sam Carana has also called for more R&D in specific areas of geo-engineering. For more on this, see this blog and this facebook group.

More generally, Sam Carana advocates the Climate Plan, which calls for a global commitment to parallel lines of action while seeking to delegate implementation to local communities, preferably through effective policies such as local feebates.

This blog has had some success in spreading this message. To date, Sam Carana has received 82,327,368 views at Google plus (see screenshot on the right), while this blog has received 3,255,445 views (see update of views in the panel further on the right).

Your continued support is needed to share this message, so please join one or more of the above-mentioned groups, and share and like the images of this post in emails, on facebook and other social media.

Regarding the urgency to act, the images below give an update on the terrifying situation in the Arctic, where the sea ice is disappearing fast.

The decline of the snow and ice cover in the Arctic goes hand in hand with rising sea surface temperatures that contribute to sea ice getting ever thinner.

The image on the right show Arctic sea ice on September 1, 2016, with thickness in meters.

The warming of the oceans is illustrated by the images below.

The image directly below shows sea surface temperature (left) and anomalies compared to 1981-2011 (right).


The image below also shows sea surface temperature anomalies, this time compared to 1971-2000.


Global warming has hit the Arctic particularly hard over the past 365 days, with anomalies exceeding the top end of the scale over most of the Arctic Ocean, as illustrated by the image below.


The situation is dire and calls for comprehensive and effective action as described at the Climate Plan.

Storms over Arctic Ocean


Winds over the Arctic Ocean reached speeds of up to 32 mph or 52 km/h on August 19, 2016. The image below shows the Jet Stream crossing Arctic Ocean on August 19, 2016 (see map on above image for geographic reference).


The Naval Research Lab image on the right shows a forecast for sea ice speed and drift run on August 15, 2016, and valid for August 17, 2016.

These storms come at a time when the sea ice has become extremely thin, as illustrated by the Naval Research Lab sea ice thickness animation below, covering a 30-day period run on August 17, 2016, with a forecast through to August 25, 2016. The animation shows that the multi-year sea ice has now virtually disappeared.

With the sea ice in such a bad shape, strong winds can cause a rapid drop in sea ice extent, at a time when the Arctic still has quite a bit of insolation. At the North Pole, insolation will come down to zero at the time of the September 2016 Equinox.


Even more terrifying is the Naval Research Lab's Arctic sea ice thickness forecast for August 25, 2016, run on August 17, 2016, using a new Hycom model, as shown on the right.

With the thicker multi-year sea ice now virtually gone, the remaining sea ice is prone to fracture and to become slushy, which also makes it darker in color and thus prone to absorb more sunlight.

Furthermore, if strong winds keep hitting the Arctic Ocean over the next few weeks, this could push much of the sea ice out of the Arctic Ocean, along the edges of Greenland and into the Atlantic Ocean.
Strong winds are forecast to keep hitting the Arctic Ocean hard for the next week, as illustrated by the image on the right showing a forecast for August 24, 2016.

As sea ice extent falls, less sunlight gets reflected back into space and is instead absorbed by the Arctic. Once the sea ice is gone, this can contribute to a rapid rise in temperature of the surface waters.

The video below shows cci-reanalyzer.org wind speed at 10 meters forecasts from August 25, 2016 1800 UTC to September 2, 2016 0300 UTC.


The left panel on the image below shows winds (surface) reaching speeds as high as 61 km/h or 38 mph over the Arctic Ocean (green circle), while the right panel shows winds at 250 hPa (jet stream).


As the Arctic warms faster than the rest of the world, the temperature difference between the Equator and the Arctic decreases, slowing down the speed at which the Northern Polar Jet Stream circumnavigates Earth, and making it wavier.

As a result, the Jet Stream can extend far over North America and Eurasia, enabling cold air to move more easily out of the Arctic (e.g. deep into Siberia) and at the same time enabling warm air to move more easily into the Arctic (e.g. from the Pacific Ocean). Such changes to the jet stream also enable strong winds to cross East Siberia more easily and cause stormy weather over the Arctic Ocean.

This is illustrated by the image below. The left panel shows the jet stream crossing East Siberia at speeds as high as 277 km/h or 172 mph on August 27, 2016, while at surface level cyclonic winds occurring over the Arctic ocean reached speeds as high as 78 km/h or 48 mph that day.

The right panel shows that, on that day, cold air moved deep into Central Siberia, resulting in temperatures as lows as -15.9°C or 3.5°F in Central Siberia and temperatures that were higher than they used to be over the Arctic Ocean.


[ click on image to enlarge ]
The image on the right shows surface winds (top) and winds at 250 hPa (i.e. jet stream, bottom) over the Arctic Ocean causing snow (blue) and rain (green) to fall north of Greenland (center).

Rain can have a devastating impact on the sea ice, due to kinetic energy breaking up the ice as it gets hit.

This can fragment the ice, resulting in water that is warmer than the ice to melt it both at the top and at the sides, in addition to melting that occurs at the bottom due to ocean heat warming the ice from below and melting that occurs at the top due to sunlight warming the ice from above.

Furthermore, where the rainwater stays on top of the sea ice, pools of water will form, fed by rainwater and meltwater. This will darken the surface. Melting sea ice is also darker in color and, where sea ice melts away altogether, even darker water will emerge. As a result, less sunlight is getting reflected back into space and more sunlight is instead absorbed.

The image below shows Arctic sea ice thickness (in m, nowcast, run on August 27, 2016, valid for August 28, 2016, panel left) and Arctic sea ice speed and drift (in cm per second, nowcast, run on August 27, 2016, valid for August 28, 2016, panel right).


The danger is that such storms, especially at this time of year, can push much sea ice out of the Arctic Ocean, along the edges of Greenland, into the Atlantic Ocean.


This danger grows as the sea ice gets thinner. Above image shows ice thickness (in m) nowcasts, run on August 30 and valid for August 31, for each year from 2012 to 2016.


Next to loss of snow and ice cover, another big danger in the Arctic is methane releases.

Above image shows methane levels as high as 2454 ppb on August 25, 2016 (top panel), strong releases from Alaska to Greenland on August 26, 2016 (middle panel), and mean methane levels as high as 1862 ppb on August 27, 2016 (bottom panel).

The image on the right shows high methane levels recorded at Barrow, Alaska, up to August 30, 2016.

The image below shows cyclonic winds (center left) over the Arctic Ocean on August 22, 2016.


The image below shows how little sea ice was left at locations close to the North Pole on August 25, 2016.


[ click on images to enlarge ]
The image on the right shows that Arctic sea ice extent was 4.8 million square km on August 27, 2016, according to the NSIDC.

NOAA data show that the July 2016 global land and ocean temperature was 16.67°C or 62.01°F, the highest temperature for any month on record.

The image below on the right shows July sea surface temperature anomalies (compared to the 20th century average) on the Northern Hemisphere.

This ocean heat is now being carried by the Gulf Stream toward to Arctic Ocean.

Meanwhile, the cold sea surface area that was so pronounced over the North Atlantic in 2015, is getting overwhelmed by ocean heat.

This is illustrated by the image below showing sea surface temperature anomalies on August 27, 2015 (left panel) and on August 27, 2016 (right panel).


The image below shows sea surface temperature anomalies in the Arctic (latitude 60°N-90°N) compared to 1961-1990.


The Climate Reanalyzer image below also shows sea surface temperature anomalies August 16, 2016, this time compared to 1979-2000.


The image below, from an earlier post, shows sea surface temperature anomalies on August 12, 2016, in the left-hand panel, and sea surface temperature anomalies in the right-hand panel.

Sea surface temperature and anomaly. Anomalies from +1 to +2 degrees C are red, above that they turn yellow and white
Above image also shows that on August 12, 2016, sea surface temperatures near Svalbard (at the location marked by the green circle) were as high as 18.9°C or 65.9°F, an anomaly of 13.6°C or 24.4°F.

As said above, changes to the Jet Stream enable warm air to move more easily into the Arctic Ocean and cold air to move more easily out of the Arctic Ocean. Where seas are shallow, a surface temperature rise can quickly warm up water all the way down to the Arctic ocean seafloor, where it can destabilize methane hydrates contained in sediments.

This could make that huge amounts of methane get released from the seafloor. Given that many of the seas in Arctic are very shallow, much of this methane can enter the atmosphere without getting broken down in the water, resulting in huge additional warming, especially over the Arctic. As discussed in an earlier post, this could contribute to a global temperature rise of over 10°C or 18°F by the year 2026.

One of the people who has been warning about these dangers for many years is Professor Peter Wadhams, whose new book A Farewell to Ice was recently launched (256 pages, published September 1, 2016).

The situation is dire and calls for comprehensive and effective action, as discussed at the Climate Plan.


Links

 Wildfires in Russia's Far East
http://arctic-news.blogspot.com/2016/08/wildfires-in-russias-far-east.html

 Climate Plan
http://arctic-news.blogspot.com/p/climateplan.html

 Rain Storms Devastate Arctic Ice And Glaciers 
http://arctic-news.blogspot.com/2015/01/rain-storms-devastate-arctic-ice-and-glaciers.html

 High Temperatures in the Arctic
http://arctic-news.blogspot.com/2015/06/high-temperatures-in-the-arctic.html

 Arctic Sea Ice Getting Terribly Thin
http://arctic-news.blogspot.com/2016/08/arctic-sea-ice-getting-terribly-thin.html

 A Global Temperature Rise Of More than Ten Degrees Celsius By 2026?
http://arctic-news.blogspot.com/2016/07/a-global-temperature-rise-of-more-than-ten-degrees-celsius-by-2026.html

 A Farewell to Ice, by Peter Wadhams
https://www.penguin.co.uk/books/273799/a-farewell-to-ice/9780241009420