Accelerating growth in CO₂ levels in the atmosphere

CO₂ Growth

In 2016, CO₂ levels in the atmosphere grew by 3.36 ppm (parts per million), a new record since 1959 and much higher than the previous record set in 2015.

Worryingly, above graph has a trendline added pointing at a growth rate in CO₂ levels of 6 ppm per year by 2026.

Growth in levels of CO₂ in the atmosphere is accelerating, despite reports that - for the third year in a row - carbon dioxide emissions from fossil fuels and industry (including cement production) had barely grown, as illustrated by the Global Carbon Project image below.

Why is growth in CO₂ levels in the atmosphere accelerating?

So, what makes growth in CO₂ levels in the atmosphere accelerate? As discussed in a previous post, growth in CO₂ levels in the atmosphere is accelerating due to:

• Deforestation and Soil Degradation:
  Agricultural practices such as depleting groundwater and aquifers, plowing, mono-cultures and cutting and burning of trees to raise livestock can significantly reduce the carbon content of soils, along with soil moisture and nutrients levels.
• Climate change and extreme weather events:
  The recent jump in global temperature appears to have severely damaged soils and vegetation. Soil carbon loss and enhanced decomposition of vegetation appear to have occurred both because of the temperature rise and the resulting extreme weather events such as heatwaves, drought, dust-storms and wildfires, and storms, hail, lightning, flooding and the associated erosion, turning parts of what was once a huge land sink into sources of CO₂ emissions.
  Moreover, extreme weather events can also lead to emissions other than CO₂ emissions, such as soot, nitrous oxide, methane and carbon monoxide, which can in turn cause a rise in the levels of ground-level ozone, thus further weakening vegetation and making plants even more vulnerable to pests and infestations.
• Oceans appear to be unable to further take up CO₂:
  Oceans appear to have turned from sinks into sources of CO₂, releasing CO₂ into the atmosphere. As discussed earlier, oceans are getting warmer, and warm water holds less oxygen than cold water. Furthermore, as the water warms, it tends to form a layer at the surface that does not mix well with cooler, nutrient-rich water below, depriving phytoplankton of some of the nutrients they need to grow. A study by Boyce et al. found a decrease of about 1% per year of phytoplankton in oceans globally. Sergei Petrovskii, co-author of a 2015 study, found that a rise in the water temperature of the world’s oceans of about 6°C could stop oxygen production by phytoplankton by disrupting the process of photosynthesis, adding that “About two-thirds of the planet’s total atmospheric oxygen is produced by ocean phytoplankton – and therefore cessation would result in the depletion of atmospheric oxygen on a global scale. This would likely result in the mass mortality of animals and humans.”

Biomass

Sensitivity

Meanwhile, research including a 2014 study by Franks et al. concludes that the IPCC was too low in its estimates for the upcoming temperature rise locked in for current CO₂ levels. A study by Friedrich et al. updates IPCC estimates for sensitivity to CO₂ rise, concluding that temperatures could rise by as much as 7.36°C by 2100 as a result of rising CO₂ levels.

When also taking further elements than CO₂ more fully into account, we could face an even larger temperature rise, i.e. a rise of 10°C (or 18°F) by 2026 (compared to pre-industrial), as further described at the extinction page that specifies the different elements of such a rise, including a 0.5°C rise due to CO₂ emissions from 2016 to 2026. The CO₂ growth discussed in this post appears to be in line with such a rise and in line with the associated loss of carbon sinks and rising vulnerability of carbon pools.

The situation looks particularly threatening in the Arctic where many of the most vulnerable carbon pools are located, where temperatures are rising fastest and where CO₂ levels have recently risen rapidly (see image below with CO₂ readings at Barrow, Alaska).

[ click on images to enlarge ] 

Also note the recent rise in methane readings at Barrow (image below).

[ click on images to enlarge ] 

Action is needed!

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


Links

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

• Extinction
http://arctic-news.blogspot.com/p/extinction.html

• Monthly CO₂ not under 400 ppm in 2016
http://arctic-news.blogspot.com/2016/11/monthly-co-not-under-400-ppm-in-2016.html

• Oxygenating the Arctic
http://arctic-news.blogspot.com/p/oxygenating-arctic.html

• How much warming have humans caused?
http://arctic-news.blogspot.com/2016/05/how-much-warming-have-humans-caused.html

• Warning of mass extinction of species, including humans, within one decade
http://arctic-news.blogspot.com/2017/02/warning-of-mass-extinction-of-species-including-humans-within-one-decade.html

• Global phytoplankton decline over the past century, by Daniel G. Boyce, Marlon R. Lewis & Boris Worm
http://www.nature.com/nature/journal/v466/n7306/abs/nature09268.html

• Mathematical Modelling of Plankton–Oxygen Dynamics Under the Climate Change, by Yadigar Sekerci and Sergei Petrovskii
https://link.springer.com/article/10.1007%2Fs11538-015-0126-0

• Global warming disaster could suffocate life on planet Earth, research shows
http://www2.le.ac.uk/offices/press/press-releases/2015/december/global-warming-disaster-could-suffocate-life-on-planet-earth-research-shows

Read more ...

Wildfires in Russia's Far East

Wildfires can add huge amounts of carbon dioxide (CO2), carbon monoxide (CO), methane (CH4), nitrous oxide (N2O) and black carbon (BC or soot) into the atmosphere.

While CO and soot are not included as greenhouse gases by the IPCC, they can have strong warming impact. CO acts as a scavanger of hydroxyl, thus extending the lifetime of methane. BC results from biomass burning, which a study by Mark Jacobson found to cause 20 year global warming of ~0.4 K. Moreover, BC has a darkening effect when settling on snow and ice, making that less sunlight gets reflected back into space, which accelerates warming. This hits the Arctic particularly hard during the Northern Summer, given the high insolation at high latitudes at that time of year.

The image below shows fires around the globe on August 12, 2016.

Visible in the top right corner of above image are wildfires in Russia’s Far East. The image below zooms in on these wildfires.

The image below shows carbon dioxide levels as high as 713 ppm and carbon monoxide levels as high as 32,757 ppb on August 12, 2016, at the location marked by the green circle, i.e. the location of the wildfires in Russia’s Far East.

As said, wildfires can also emit huge amounts of methane. The image below shows methane levels as high as 2230 ppb at 766 mb.

The magenta-colored areas on above image and the image below indicate that these high methane levels are caused by these wildfires in Russia’s Far East. The image below shows methane levels as high as 2517 ppb at 586 mb.

Methane levels as high as 2533 ppb were recorded that day (at 469 mb), compared to a mean global peak of 1857 ppb that day.

Analysis by Global Fire Data found that the 2015 Indonesian fires produced more CO2e (i.e. CO2 equivalent of, in this case, CO2, CH4 and N2O) than the 2013 CO2 emissions from fossil fuel by nations such as Japan and Germany. On 26 days in August and September 2015, emissions from Indonesian fires exceeded the average daily emissions from all U.S. economic activity, as shown by the WRI image below.

A recent study calculated that Indonesia’s 2015 fires killed 100,000 people.

Methane emissions from wildfires can sometimes be broken down relatively quickly, especially in the tropics, due to the high levels of hydroxyl in the atmosphere there. Conversily, methane from wildfires at higher latitudes can persist much longer and will have strong warming impact, especially at higher latitudes.

Similarly, CO2 emissions from wildfires in the tropics can sometimes be partly compensated for by regrowth of vegetation after the fires. However, regrowth can be minimal in times of drought, when forests are burned to make way for other land uses or when peat is burned, and especially at higher latitudes where the growth season is short and weather conditions can be harsh. Carbon in peat lands was built up over thousands of years and even years of regrowth cannot compensate for this loss.

A recent study concludes that there is strong correlation between fire risk for South America and high sea surface temperatures in the Pacific Ocean and the Atlantic Ocean. This makes the current situation very threatening. As the image below shows, sea surface temperature anomalies were very high on August 12, 2016.

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. These high temperatures threaten to melt away the Arctic’s snow and ice cover, resulting in albedo changes that accelerate warming, particularly in the Arctic. Warming of the Arctic Ocean further comes with the danger that methane hydrates at its seafloor will destabilize and make that huge amounts of methane will enter the atmosphere.

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


Links

• Effects of biomass burning on climate, accounting for heat and moisture fluxes, black and brown carbon, and cloud absorption effects, by Mark Z. Jacobson (2014)
http://onlinelibrary.wiley.com/doi/10.1002/2014JD021861/abstract

• 2016 fire risk for South America
http://www.ess.uci.edu/~amazonfirerisk/ForecastWeb/SAMFSS2016.html

• Global Fire Data - 2015 Indonesian fires
http://www.globalfiredata.org/updates.html#2015_indonesia

• Indonesia’s Fire Outbreaks Producing More Daily Emissions than Entire US Economy (2015)
http://www.wri.org/blog/2015/10/indonesia%E2%80%99s-fire-outbreaks-producing-more-daily-emissions-entire-us-economy

• Indonesia’s 2015 fires killed 100,000 people, study finds
http://www.climatechangenews.com/2016/09/19/indonesias-2015-fires-killed-100000-people-study-finds

• Smoke from 2015 Indonesian fires may have caused 100,000 premature deaths
https://www.seas.harvard.edu/news/2016/09/smoke-from-2015-indonesian-fires-may-have-caused-100000-premature-deaths

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

Read more ...

A Global Temperature Rise Of More than Ten Degrees Celsius By 2026?

How much have temperatures risen and how much additional warming could eventuate over the next decade? The image on the right shows a potential global temperature rise by 2026 from pre-industrial levels. This rise contains a number of elements, as discussed below from the top down.

February 2016 rise from 1900 (1.62°C)

The magenta element at the top reflects the temperature rise since 1900. In February 2016, it was 1.62°C warmer compared to the year 1900, so that’s a rise that has already manifested itself.

Rise from pre-industrial levels to 1900 (0.3°C)

Additional warming was caused by humans before 1900. Accordingly, the next (light blue) element from the top down uses 0.3°C warming to reflect anthropogenic warming from pre-industrial levels to the year 1900.

When also taking this warming into account, then it was 1.92°C (3.46°F) warmer in February 2016 than in pre-industrial times, as is also illustrated on the image below.

Warming from the other elements (described below) comes on top of the warming that was already achieved in February 2016.

Rise due to carbon dioxide from 2016 to 2026 (0.5°C)

The purple element reflects warming due to the amount of carbon dioxide in the atmosphere by 2026. While the IEA reported that energy-related carbon dioxide emissions had not risen over the past few years, carbon dioxide levels in the atmosphere have continued to rise, due to feedbacks that are kicking in, such as wildfires and reduced carbon sinks. Furthermore, maximum warming occurs about one decade after a carbon dioxide emission, so the full warming wrath of the carbon dioxide emissions over the past ten years is still to come. In conclusion, an extra 0.5°C warming by 2026 seems possible as long as carbon dioxide levels in the atmosphere and oceans remain high and as temperatures keep rising.

Removal of aerosols masking effect (2.5°C)

With dramatic cuts in emissions, there will also be a dramatic fall in aerosols that currently mask the full warming of greenhouse gases. From 1850 to 2010, anthropogenic aerosols brought about a decrease of ∼2.53 K, says a recent paper. While on the one hand not all of the aerosols masking effect may be removed over the next ten years, there now are a lot more aerosols than in 2010. A 2.5°C warming due to removal of part of the aerosols masking effect therefore seems well possible by the year 2026.

Albedo changes in the Arctic (1.6°C) 

Warming due to Arctic snow and ice loss may well exceed 2 W per square meter, i.e. it could more than double the net warming now caused by all emissions by people of the world, calculated Professor Peter Wadhams in 2012. A 1.6°C warming due to albedo changes (i.e. decline of both Arctic sea ice and snow and ice cover on land) therefore seems well possible by the year 2026.

Methane eruptions from the seafloor (1.1°C)

“. . we consider release of up to 50 Gt of predicted amount of hydrate storage as highly possible for abrupt release at any time,” Dr. Natalia Shakhova et al. wrote in a paper presented at EGU General Assembly 2008. Authors found that such a release would cause 1.3°C warming by 2100. Note that such warming from an extra 50 Gt of methane seems conservative when considering that there now is only some 5 Gt of methane in the atmosphere, and over a period of ten years this 5 Gt is already responsible for more warming than all the carbon dioxide emitted by people since the start of the industrial revolution. Professor Peter Wadhams co-authored a study that calculated that methane release from the seafloor of the Arctic Ocean could yield 0.6°C warming of the planet in 5 years (see video at earlier post). In conclusion, as temperatures keep rising, a 1.1°C warming due to methane releases from clathrates at the seafloor of the world’s oceans seems well possible by the year 2026.

Extra water vapor feedback (2.1°C)

Rising temperatures will result in more water vapor in the atmosphere (7% more water vapor for every 1°C warming), further amplifying warming, since water vapor is a potent greenhouse gas. Extra water vapor will result from warming due to the above-mentioned albedo changes in the Arctic and methane releases from the seafloor that could strike within years and could result in huge warming in addition to the warming that is already there now. As the IPCC says: "Water vapour feedback acting alone approximately doubles the warming from what it would be for fixed water vapour. Furthermore, water vapour feedback acts to amplify other feedbacks in models, such as cloud feedback and ice albedo feedback. If cloud feedback is strongly positive, the water vapour feedback can lead to 3.5 times as much warming as would be the case if water vapour concentration were held fixed", according to the IPCC. Given a possible additional warming of 2.7°C due to just two elements, i.e. Arctic albedo changes and seafloor methane, an additional warming over the next decade of 2.1°C due to extra water vapor in the atmosphere therefore does seem well possible by the year 2026.

Further feedbacks (0.3°C)

Further feedbacks will result from interactions between the above elements. Additional water vapor in the atmosphere and extra energy trapped in the atmosphere will result in more intense storms and precipitation, flooding and lightning. Flooding can cause rapid decomposition of vegetation, resulting in strong methane releases. Furthermore, plumes above the anvils of severe storms can bring water vapor up into the stratosphere, contributing to the formation of cirrus clouds that trap a lot of heat that would otherwise be radiated away, from Earth into space. The number of lightning strikes can be expected to increase by about 12% for every 1°C of rise in global average air temperature. At 3-8 miles height, during the summer months, lightning activity increases NOx by as much as 90% and ozone by more than 30%. The combination of higher temperatures and more lightning will also cause more wildfires, resulting in emissions such as of methane and carbon monoxide. Ozone acts as a direct greenhouse gas, while ozone and carbon monoxide can both act to extend the lifetime of methane. Such feedbacks may well result in an additional 0.3°C warming by the year 2026.

Total potential global temperature rise by 2026 (10°C or 18°F)

Adding up all the warming associated with the above elements results in a total potential global temperature rise (land and ocean) of more than than 10°C or 18°F within a decade, i.e. by 2026. As said before, this scenario assumes that no geoengineering will take place over the next decade.

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

Read more ...

Climate Feedbacks Start To Kick In More

Droughts and heatwaves are putting vegetation under devastating pressure while also causing wildfires resulting in deforestation and loss of peat at massive scale, contributing to the rapid recent rise in carbon dioxide levels. 

It will take a decade before these high recent carbon dioxide emissions will reach their full warming impact. Furthermore, as the world makes progress with the necessary cuts in greenhouse gas emissions, this will also remove aerosols that have until now masked the full wrath of global warming. By implication, without geoengineering occurring over the coming decade, temperatures will keep rising, resulting in further increases in abundance and intensity of droughts and wildfires.

Temperatures in the Arctic are rising faster than elsewhere. The image below shows that Arctic waters are now much warmer than in 2015. On June 22, 2016, sea surface near Svalbard was as warm as 13.8°C or 56.9°F (green circle), i.e. 11.6°C or 20.9°F warmer than 1981-2011.

High temperatures, as high as 34.1°C or 93.3°F at green circle, were recorded on July 1, 2016, over the Lena River which flows into the Laptev Sea, as illustrated by the image on the right [click on images to enlarge them].

Wildfires can release huge amounts of carbon dioxide (CO2), carbon monoxide (CO), methane and soot. The image below shows that on June 23, 2016, wildfires north of Lake Baikal caused emissions as high as 22,953 ppb CO and 549 ppm CO2 at the location marked by the green circle.

[ click on image to enlarge ]

The video below, created by Jim Reeve, shows an animation with carbon monoxide levels in May 2016.

As increasing amounts of soot from wildfires settle on its ice and snow cover, albedo decline in the Arctic will accelerate. In addition, heatwaves are causing rapid warming of rivers ending in the Arctic Ocean, further speeding up its warming and increasing the danger of methane releases from the seafloor of the Arctic Ocean.

As more energy stays in the biosphere, storms can be expected to strike with greater intensity. Rising temperatures will result in more water vapor in the atmosphere (7% more water vapor for every 1°C warming), further amplifying warming and resulting in more intense precipitation events, i.e. rainfall, flooding and lightning.

Record-breaking daily rainfall events around the world. From Lehmann et al. 

Recently, West Virginia got hit by devastating flooding, killing at least 26 people and causing evacuation of thousands of people and a huge amount of damage. Flooding can also cause rapid decomposition of vegetation, resulting in strong methane releases, as illustrated by the image below showing strong methane presence (magenta color) at 39,025 ft or 11.9 km on June 26 (left panel), as well as at 44,690 ft or 13.6 km on June 27 (right panel).

[ click on image to enlarge ]

Furthermore, plumes above the anvils of severe storms can bring water vapor up into the stratosphere, contributing to the formation of cirrus clouds that trap a lot of heat that would otherwise be radiated away, from Earth into space. The number of lightning strikes can be expected to increase by about 12% for every 1°C of rise in global average air temperature. At 3-8 miles height, during the summer months, lightning activity increases NOx by as much as 90% and ozone by more than 30%.

In conclusion, feedbacks are threatening to cause runaway warming, potentially making temperatures rise by more than 10°C or 18°F within a decade. Already now, melting ice sheets are changing the way the Earth wobbles on its axis, Nasa says. As Paul Beckwith discusses in the video below, changes are also taking place to the jet streams.

The danger is that changes to the planet’s wobble will trigger massive earthquakes that will destabilize methane hydrates and result in huge amounts of methane abruptly entering the atmosphere, as illustrated by the image below.

Have we lost the Arctic? It looks like Earth no longer has two poles, but instead has turned into a Monopole, with only one pole at Antarctica. On June 29, 2016, Arctic water (sea surface) was as warm as 15.8°C (60.5°F), or 13°C (23.4°F) warmer than 1981-2011. Meanwhile, surface temperatures over Antarctica that day were as low as -66.6°C (-87.8°F).

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


Links

• Feedbacks in the Arctic
http://arctic-news.blogspot.com/p/feedbacks.html

• Wildfire Danger Increasing
http://arctic-news.blogspot.com/2016/05/wildfire-danger-increasing.html

• Arctic Climate Records Melting
http://arctic-news.blogspot.com/2016/05/arctic-climate-records-melting.html

• Ten Degrees Warmer In A Decade?
http://arctic-news.blogspot.com/2016/03/ten-degrees-warmer-in-a-decade.html

• Arctic Sea Ice gone by September 2016?
http://arctic-news.blogspot.com/2016/05/arctic-sea-ice-gone-by-september-2016.html

• February Temperature
http://arctic-news.blogspot.com/2016/03/february-temperature.html

• International Energy Agency (IEA)
http://www.iea.org/

• National Oceanic and Atmospheric Administration (NOAA)
http://www.noaa.gov/

• Projected increase in lightning strikes in the United States due to global warming, by Romps et al. (2014)
http://science.sciencemag.org/content/346/6211/851

• Impacts of anthropogenic and natural NOx sources over the U.S. on tropospheric chemistry, by Zhang et al. (2003)
http://www.pnas.org/content/100/4/1505.abstract

• Wildfires Rage in Siberia, NASA June 30, 2016, images acquired June 29, 2016
http://earthobservatory.nasa.gov/IOTD/view.php?id=88284

• Melting ice sheets changing the way the Earth wobbles on its axis, says Nasa
https://www.theguardian.com/environment/2016/apr/09/melting-ice-sheets-changing-the-way-the-earth-wobbles-on-its-axis-says-nasa

• Record-breaking heavy rainfall events increased under global warming, by Lehmann et al. (2015)
https://www.pik-potsdam.de/news/press-releases/record-breaking-heavy-rainfall-events-increased-under-global-warming

• ‘Thousand-year’ downpour led to deadly West Virginia floods (July 8, 2016)
https://www.climate.gov/news-features/event-tracker/thousand-year-downpour-led-deadly-west-virginia-floods

Read more ...

Interview with Paul Beckwith

1) Hi Paul. Thanks for agreeing to do this interview. First of all, could you tell us a bit about your background, how long you’ve been involved in climate science, and what areas of climatology you specialize in?

Hello Sam. Thank you. It is my pleasure to have this interview with you.

I am an Engineer with a Bachelor of Engineering Degree in Engineering Physics (often called Engineering Science) from McMaster University in Hamilton, Ontario, Canada. I finished at the top of my class and received many scholarships and awards during my studies. My CV can be found on my website http://paulbeckwith.net under the About Me section.

I am a Physicist with a Master of Science Degree in Laser Physics. My research area was blowing molecules apart with high-powered CO2 lasers and measuring all the chunks flying off with low-power tunable diode lasers. This involved the science of molecular spectroscopy in the infrared region.

I worked in industry for many years, as a Product Line Manager for optical switching devices in high speed fiber optic communication systems, on high powered Excimer laser research and tunable laser research, and also on software quality assurance for various tech companies.

I have been interested in climate science my entire life. I decided to formally study it after becoming concerned with the lack of urgency by the public, scientists (literally everybody) about 6 years ago or so.

I am a part time professor in the Laboratory for Paleoclimatology in the Geography Department at the University of Ottawa. I have taught many courses including climatology, meteorology, oceanography and the geography of environmental issues. My research work in my PhD program is abrupt climate system change in the past and present, to determine what will happen in the near future. I am very active on educating the public about the grave dangers that we face from abrupt climate change, using primarily videos and blogs and public talks (see my website link above). My research is self-funded, apart from my teaching, and I greatly welcome financial contributions at the Please Donate button on the main task bar on my website.

2) It’s clear that the Arctic is melting rapidly and this trend is likely to continue. When do you predict the Arctic will start to have ice-free conditions? At what point during the year will it disappear, and how long for? How will these conditions develop in future decades, and could we reach a point where the Arctic is free of ice all year round?

I think that the Arctic will start to have ice-free conditions at the end of the melt season (Septembers) as early as 2020 or before (possibly even the summer of 2016). It is hard to predict a single year, since the loss of Arctic sea ice greatly depends on local Arctic wind and ocean conditions in the summer melt season. These local conditions determine how much ice is lost to export via the Fram Strait and Nares Strait, which makes a huge difference to ice loss amounts during the Northern summer period. When there is less than 1 million square kilometers of sea ice left, we have essentially a “blue-ocean” event in the Arctic.

For the sake of argument, lets pick September, 2020, for the first “blue-ocean” event in the Arctic (essentially no sea ice left). This would occur for about a month, call it the month of September. Within 2 or 3 years it is highly likely that the duration of this “blue-ocean” state would be 3 months or say, thus occur for August, September and October in 2023. Within an additional few years, say by 2025 it is highly likely that the “blue-ocean” event would be extended for another few additional months, and we would have ice free conditions from July through to and including November; namely for 5 months of the year. Then, within a decade or two from the initial 2020 event we can expect to have an ice free “blue-ocean” Arctic year round; that would be some year between 2030 and 2040.

Of course if the first “blue-ocean” event occurred in 2016 this timeline would be advanced accordingly.

3) In recent years, there’s been a lot of talk about methane eruptions in the Arctic and Siberia. How serious is this, in terms of its potential for adding to global warming? Can you give us some idea of the timescales involved? What’s the level of certainty about these future effects?

Once the Arctic is essentially ice free for ever increasing durations in the summer months, and then over the entire year there are two enormous feedback risks that we face. Methane and Greenland.

Methane is the mother of all risks. The Russians have measured large increases in emissions from the continental shelf seabed in the Eastern Siberian Arctic Shelf (ESAS). Over the timespan of a few years they observed that methane bubbled up in vast numbers of plumes that increased in size from tens of meters in diameter to hundreds and even thousands of meter diameter plumes in the shallow regions of ESAS. Global atmospheric levels of methane are rapidly rising, and although they average about 1900 ppb or so there have been readings over 3100 ppb in the atmosphere over the Arctic. Since the Global Warming Potential (GWP) of methane versus carbon dioxide is 34x, 86x and close to 200x on timescales of 100 years, 20 years and a few years, respectively a large burst of methane can virtually warm the planet many degrees almost overnight.

Recently, we have passed about 405 ppm of CO2, with a record rise of 3.09 ppm in 2015 alone. When accounting for methane and other greenhouse gases (GHGs) and putting them into CO2-equivalent numbers, we are at about 490 ppm CO2 – equivalent. We are literally playing with fire, and the outcome will not be pretty.

Greenland ice melt is the next enormous feedback risk. When we lose snow and ice in the Arctic, and the cascading feedbacks like albedo-destruction kick in, and the methane comes out then the enormous warming over Greenland and in the water around and under the Greenland ice will viciously destroy the ice there and greatly accelerate sea level rise. I refer people to my video from several years ago on the great risk of realizing 7 meters of global sea level rise by 2070 from Greenland and Antarctica melt.

The level of certainty over these future effects is close to 100% if we continue to be stupid and do nothing. If we are smart we need to have a Manhattan – Marshall plan like emergency status to:
a) Zero emissions as-soon-as-possible, i.e. by 2030;
b) Cool the Arctic to keep the methane in place and restore jet stream stability; and
c) Remove CO2 from the atmosphere/ocean system and remove methane from the atmosphere.
There is no other choice. I use the metaphor of a three legged bar stool with legs a), b) and c) as above.

Barstool approach (slightly different from text in that SRM and methane
removal are included with adaptation and conservation in bottom leg)

4) What new satellites, monitoring stations, and other science projects are being planned for the future (if any)? How will these improve our knowledge of the Arctic and the various climatic processes in the region?

NASA, the ESA and the Russians and Chinese are always launching new satellite with better high tech sensors to gather more information on the changes in the Earth System. We need to have a massive increase in scientific study in the Arctic to better quantify what is happening there. However, we know enough to see that if we do not deploy the three-legged barstool approach immediately then our chances are halting our ongoing abrupt climate change will vanish, and emissions from the Earth System will dwarf all cumulative anthropogenic emissions throughout human history. We need the US military budget of $700 to $800 billion dollars per year to be applied to saving human civilization from abrupt climate change.

5) What can be done to save the Arctic and reverse the melting trend? How long would it take to restore the ice cover to, say, mid-20th century levels? Is this even possible with current technology?

We must cool the Arctic as soon as possible using Solar Radiation Management (SRM) technologies. We can deploy SRM very quickly if we treat this Arctic temperature amplification as an existential threat to humanity and put billions of dollars into deployment. It will take many years, perhaps a decade to restore the ice cover but we must start now. If we wait until we have “blue-ocean” events before we deploy then our ability to restore the ice will be much harder and perhaps even futile.

Deployment is possible with current technology. I am specifically referring to Marine Cloud Brightening (MCB) methods. I am working today with people on these technologies.

6) How does the melting in the Arctic compare to its southern polar opposite, the Antarctic?

The Arctic is rapidly losing snow cover (mostly in the spring months) and sea ice cover, and is thus the average albedo (reflectivity) of the region is rapidly decreasing. This if feeding back into additional Arctic Temperature Amplification and further darkening and warming, until we have no snow and ice in the region. These vicious feedback cycles have not kicked in to the same extent in the Antarctic. The ice cap there is losing ice causing a rise in sea level mostly from the warming of the seawater undercutting the ice on land that is grounded below sea level. However, since the Arctic is warming so fast due to increased solar radiation absorption (from darkening) there is less heat transported there via the atmosphere and oceans. Thus, jet streams and ocean currents are slowing. Thus, more heat is moving from the equator to the southern hemisphere, making it to Australian latitudes and increasing the temperature gradient to Antarctica and thus increasing the speed of the jet streams there.

7) Finally, what’s your message to climate change deniers who reject the science and believe the whole thing is a giant hoax?

Climate change deniers cannot be tolerated by society any longer. They are threatening the future of everybody on our planet. Send them all to Guantanamo for intensive and mandatory climate science basic training, and when they get clued in they can be reintroduced into society.

Interview with Paul Beckwith http://arctic-news.blogspot.com/2016/03/interview-with-paul-beckwith.html
Posted by Sam Carana on Saturday, March 12, 2016

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Greenhouse gas levels and temperatures keep rising

At the Paris Agreement, nations pledged to cut emissions and avoid dangerous temperature rises. Yet, the rise in greenhouse gas levels and temperatures appears to be accelerating.

Record growth of carbon dioxide levels at Mauna Loa

Annual mean carbon dioxide level measured at Mauna Loa, Hawaii, grew by 3.17 ppm (parts per million) in 2015, a higher growth rate than in any year since the record started in 1959.

As above image shows, a polynomial trendline added to the data points at a carbon dioxide growth rate of 4 ppm by the year 2024 and 5 ppm by the year 2028. 

At the start of the Industrial Revolution, the carbon dioxide level in the atmosphere was about 280 ppm. On January 11, 2016, as above image shows, carbon dioxide level at Mauna Loa, Hawaii, was 402.1 ppm. That's some 143% times what the upper level of carbon dioxide was in pre-industrial times over at least the past 400,000 years, as the image further below illustrates.

At higher northern latitudes, carbon dioxide levels are higher than elsewhere on Earth, as illustrated by above image. These high greenhouse gases contribute to accelerated warming of the Arctic. 

Methane levels rising even faster than CO2 levels, especially over Arctic Ocean

Historically, methane levels have been moving up and down between a window of 300 and 700 ppb. In modern times, methane levels have been rising even more rapidly than carbon dioxide levels, as illustrated by the image below, from an earlier post.

As above image illustrates, the mean level of 1839 ppb that was reached on September 7, 2014, is some 263% of the ~700 ppb that historically was methane’s upper level.

The image below, from an earlier post, shows the available World Meteorological Organisation (WMO) annual means, i.e. from 1984 through to 2014, with added polynomial trendline based on these data. The square marks a high mean 2015 level, from NOAA’s MetOp-2 satellite images, and it is added for comparison, so it does not influence the trendline, yet it does illustrate the direction of rise of methane levels and the threat that global mean methane levels will double well before the year 2040.

Recently, some very high peak levels have been recorded, including a reading of 2745 ppb on January 2, 2016, and a reading of 2963 ppb on January 8, 2016, shown below.

These high readings illustrate the danger that, as warmer water reaches the seafloor of the Arctic Ocean, it will increasingly destabilize sediments that can contain huge amounts of methane in the form of free gas and hydrates. Images associated with these high readings show the presence of high methane levels over the Arctic Ocean, indicating that these high peaks originate from the Arctic ocean and that sediments at the seafloor of the Arctic Ocean are destabilizing. The danger is that these peaks will be followed up by even stronger abrupt releases from the seafloor of the Arctic Ocean, as water temperatures keep rising.

Rising temperatures

Global mean temperature in 2015 was 0.87°C (~1.6°F) higher than in 1951-1980. 

Above image shows NASA data with a polynomial trendline added that points at a 2015 temperature that is more than 1.1°C (~2.03°F) higher than it was in 1900.

The image on the right shows that it was 1.17°C warmer in 2015 than it was in the period 1890-1910.

Additionally, some 0.3°C warming had already taken place by the year 1900, as discussed in an earlier post.

Together, that makes that 2015 temperatures were 1.47°C above pre-industrial levels.

Furthermore, temperatures did rise steeply over the course of the year 2015.

By the end of the year 2015, the temperature rise was even stronger than the average for 2015 would indicate, as illustrated by the image on the right.

It is now 2016 and temperatures are still rising. In other words, it now is more than 1.5°C or 2.7°F warmer than in pre-industrial times. In conclusion, we have already crossed the 1.5°C guardrail that the Paris Agreement had pledged to try and limit global warming to. 

What is the prognosis for the temperature rise from here onward? The current El Niño is expected to continue well into 2016. Even if the El Niño slows down, it will by then likely have contributed to huge losses of snow and ice cover, including sea ice melt in the Arctic. The resulting albedo changes alone may well have an even stronger warming effect than the El Niño, while there are further feedbacks such as disruption of the jet stream and methane eruptions from the seafloor of the Arctic Ocean.

The image below shows that, when that same trendline featuring in above graph is extended into the future, it points at a 2°C or 3.6°F global temperature anomaly rise before the year 2030, a rise of about 4°C or 7.2°F by 2040, and a 10°C or 18°F rise before the year 2060. That would be a rise compared to the period 1951-1980, i.e. warming compared to pre-industrial levels would be even more severe.

Three points are important to help more fully grasp the predicament we are in:

1. At higher latitudes of the Northern Hemisphere, temperatures are rising faster than globally, as illustrated by above image that shows that a 10°C rise could hit the Arctic by 2030. 
2. Summer peaks will be even more devastating than annual averages. 
3. The rise of temperatures on land will be steeper than the rise in the combined land-ocean temperatures, as illustrated by the image below that shows that a 3°C rise on land could occur well before the year 2030.  

Comprehensive and effective action needed

As greenhouse gases and temperatures keep rising, the heat will be felt earliest and most severely on land, during the northern summer and in the Arctic.

One big danger is that soil that was previously frozen will become exposed and will start releasing huge amounts of carbon, in the form of carbon dioxide or methane.

Furthermore, boreal forest, tundra and peats bogs are at risk of firestorms that will also come with huge amounts of emissions.

All this will make the rise in temperature speed up even more, with much of the soot from firestorms in Siberia settling on the Himalaya Tibetan plateau, melting the glaciers there and causing short-term flooding followed by rapid decrease of the flow of ten of Asia’s largest river systems that originate there, with more than a billion people’s livelihoods depending on the continued flow of this water.

Again, the reason why temperatures look set to rise so abruptly and dramatically in the Arctic is feedbacks, as discussed as the feedbacks page. The biggest danger that comes with these rapidly rising temperatures in the Arctic is that large methane eruptions from the seafloor of the Arctic Ocean will further heat up the atmosphere, at first in hotspots over the Arctic, and eventually around the globe, while also causing huge temperature swings and extreme weather events, further contributing to increasing depletion of fresh water and food supply.

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

Below is an image by Malcolm Light, which updates an image that appeared in an earlier post. 

Annual mean carbon dioxide level measured at Mauna Loa, Hawaii, grew by 3.17 ppm (parts per million) in 2015, a higher…
Posted by Sam Carana on Thursday, January 14, 2016

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Sleeping Giant in the Arctic

Huge amounts of carbon are contained in sediments, soils and vegetation in the Arctic. Rising temperatures in the Arctic threaten to cause much of this carbon to be released to the atmosphere.

On May 23, 2015, temperatures in Alaska were as high as 91°F (32.78°C), as illustrated by the image below.

[ image credit: US National Weather Service Alaska ]

High temperatures were reached at the city of Eagle, located on the southern bank of the Yukon River, at an elevation of 853 ft (260 m). High temperatures at such a location will cause meltwater, aggravating the situation well beyond the local area.

A bank of permafrost thaws near the Kolyma
River in Siberia. Credit: University of Georgia

Carbon contained in soils will thus become increasingly exposed under the combined impact of rising temperatures and the associated growing amounts of meltwater. The meltwater can additionally cause erosion further downstream, thus making carbon at many locations become more prone to be consumed by microbes and released into the atmosphere in the form of carbon dioxide and methane.

A recent study found that, at a location where the Kolyma river in Siberia carved into the permafrost and exposed the carbon, microbes converted 60% of the carbon into carbon dioxide in two weeks time.

Gary Houser, who recently launched the movie Sleeping Giant in the Arctic, elaborates on the threat of emissions from thawing permafrost:

This immense release would likely feed on itself, raising temperatures that continue melting more and more permafrost in a vicious, frightening, and unstoppable cycle. A tipping point could well be crossed, at which time human intervention is no longer possible. Temperatures across the planet could soar, setting in motion catastrophic levels of drought and food shortage. All life support systems on earth and life forms themselves could be placed under severe stress.

The colossal scale of the danger - and the observation of those factors lining up that could trigger it - demand that humanity exercise the precautionary principle. All political decision-making related to carbon emissions must be based on the understanding that a catastrophic consequence is looming, and the window of time for prevention quickly diminishing.

SLEEPING GIANT IN THE ARCTIC:

Can Thawing Permafrost Cause Runaway Global Heating?

by Gary Houser

Sources: 

US National Weather Service Alaska

University of Georgia

Sleeping Giant in the Arctic

Sleeping Giant in the Arctic http://arctic-news.blogspot.com/2015/05/sleeping-giant-in-the-arctic.html

Posted by Sam Carana on Monday, May 25, 2015

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