Showing posts with label emissions. Show all posts
Showing posts with label emissions. Show all posts

Friday, July 4, 2014

Climate Plan

This image sums up the lines of action, to be implemented in parallel and as soon as possible, and targets of the Climate Plan, in order to avoid climate catastrophe.

The Climate Plan and its various parts have been discussed in many post at Arctic-news blog over the years.

Now is the time to support the Climate Plan and to make sure that it will be considered at many forums, such as the Climate Summit, to be held September 23, 2014, at the U.N. Headquarters in New York, and preparations for the UNFCCC Climate Change Conference in Paris in 2015.

Please show your support by sharing this text and the image widely!


Emission cuts

In nations with both federal and state governments such as the U.S., the President (or Head of State or Cabinet, basically where executive powers are held) can direct:
  • federal departments and agencies to reduce their emissions for each type of pollutant annually by a set percentage, say, CO2 and CH4 by 10%, and HFCs, N2O and soot by higher percentages.
  • the federal Environmental Protection Agency (EPA) to make states each achieve those same reductions. 
  • Target: 80% cut everywhere for each type of pollutant
    by 2020 (to be managed locally provided targets are met)
  • the EPA to monitor progress by states and to step in with more effective action in case a state looks set to miss one or more targets.
    (More effective action in such a case would be to impose (federal) fees on applicable polluting products sold in the respective state, with revenues used for federal benefits. Such federal benefits could include building interstate High-Speed Rail tracks, adaptation and conservation measures, management of national parks, R&D into batteries, ways to vegetate deserts and other land use measurements, all at the discretion of the EPA. Fees can be roughly calculated as the average of fees that other states impose in successful efforts to meet their targets.)
Similar policies could be adopted elsewhere in the world, and each nation could similarly delegate responsibilities to states, provinces and further down to local communities.

Carbon dioxide removal and storage
Target: restore atmosphere and ocean to long term average
by 2100 (with each nation's annual contributions to reflect
its past emissions)

Energy feebates can best clean up energy, while other feebates (such as pictured in the above diagram) can best raise revenue for carbon dioxide removal. Energy feebates can phase themselves out, completing the necessary shift to clean energy within a decade. Carbon dioxide removal will need to continue for much longer, so funding will need to be raised from other sources, such as sales of livestock products, nitrogen fertilizers and Portland cement.

A range of methods to remove carbon dioxide would be eligible for funding under such feebates. To be eligible for rebates, methods merely need to be safe and remove carbon dioxide.

There are methods to remove carbon dioxide from the atmosphere and/or from the oceans. Rebates favor methods that also have commercial viability. In case of enhanced weathering, this will favor production of building materials, road pavement, etc. Such methods could include water desalination and pumping of water into deserts, in efforts to achieve more vegetation growth. Selling a forest where once was a desert could similarly attract rebates.

Some methods will be immediately viable, such as afforestation and biochar. It may take some time for methods such as enhanced weathering to become economically viable, but when they do, they can take over where afforestation has exhausted its potential to get carbon dioxide back to 280ppm.

Additionally, conservation and land use measures could help increase carbon storage in ecosystems.

Solar radiation management

Target: prevent Arctic Ocean from warming by more
than 1°C above long term average (U.N. supervised)
Apart from action to move to a more sustainable economy, additional lines of action are necessary to reduce the danger of runaway global warming.

Extra fees on international commercial aviation could provide funding for ways to avoid that the temperature of the atmosphere or the oceans will rise by more than 1°C above long term average.

Due to their potential impact across borders, these additional lines of action will need ongoing research, international agreement and cooperation.

Land, clouds, wind, water, snow and ice management

Target: increase Arctic snow and ice cover (U.N.
supervised) and restore it to its long term average 
Apart from action to move to a more sustainable economy, additional lines of action are necessary to reduce the danger of runaway global warming.

Extra fees on international commercial aviation could also provide funding for ways to cool the Arctic and restore the snow and ice cover to its long term average extent.

As said, due to their potential impact across borders, these additional lines of action will need ongoing research, international agreement and cooperation.

Methane management and further action

Target: relocate vulnerable Arctic clathrates (U.N. supervised)
and restore mean atmospheric CH4 level to long term average
by 2100 (with each nation's annual contributions to reflect its
past emissions.
Further action is needed to avoid that huge quantities of methane will abruptly erupt from the seafloor of the Arctic Ocean.

Vulnerable hydrates should be considered to be relocated under U.N. supervision.

Besides this, local action can be taken to reduce methane levels in the atmosphere with each nation's annual contributions to reflect its past emissions.

Adaptation, conservation and land use measures could further improve the situation.

The comprehensive and effective action of the Climate Plan will reduce the threat of runaway warming, and this will have obvious benefits for the environment and for species threatened with extinction.

Additionally this will also save people money, will improve people's health and safety, will increase security of food and fresh water supply, will make energy supply and the electric grid more efficient, safe, robust and reliable, will reduce perceived needs for military forces to police fuel supply lines globally, and will create numerous local job and investment opportunities.


Please support, follow and discuss the Climate Plan at facebook.com/ClimatePlan and at Arctic-news


Tuesday, June 3, 2014

Obama's Power Plant Rules: Too Little, Too Late, Too Ineffective

On June 2, 2014, the Obama administration through the Environmental Protection Agency (EPA) announced that states must lower carbon dioxide (CO2) emitted for each unit (MWh) of electricity they produce.

1. Too Little

Under the EPA rules, the nationwide goal is to reduce CO2 emissions from the power sector by 30% from 2005 levels. This will also reduce other pollutants.
Sam Carana: The goal should be an 80% cut in emissions. Reductions should not be averaged out over different types of emissions, but instead the 80% reduction target should apply to each type of emission, i.e. 80% cuts in CO2 and 80% cuts in CH4 and 80% cuts in black carbon, etc.
2. Too late

Under the EPA rules, states must meet interim targets during the 2020s, but they can delay making emission cuts provided they will on average comply with targets by 2030. Moreover, the EPA suggests that they can from then on maintain that level subsequently.
Sam Carana: For over six years, I have been calling for an 80% cut in emissions by 2020. When people now ask if I still believe such reductions are feasible given the lack of action over the years, I respond that, precisely because so little has been achieved over the years, it now is even more imperative to set a target of 80% emissions cuts by 2020. If we start cutting 13.4% off this year's emissions, and keep cutting emissions by the same amount each subsequent year, we'll be under 20% (i.e. at 19.6%) by 2020. 
3. Too ineffective

Under the EPA rules, states could comply by either reducing CO2 emissions from their power plants or buying credits or offsets from elsewehere, e.g. through cap-and-trade programs. States can choose to use existing multi-state programs or create new ones.
Sam Carana: The goal should be a genuine 80% cut in emissions in each and every state. It is good to delegate decisions to states regarding what works best locally to achieve such reductions. However, schemes such as cap-and-trade, carbon credits and offsetting keep local polluters dirty by allowing them to claim credit for progress made elsewhere. A state buying credits from beyond its borders does not genuinely reduce its own emissions, making it even harder for it to reach its next targets (which should be even tighter), while also making it harder for targets to be reached elsewhere.  
The bigger such schemes grow, the more they become fraught with difficulties, twisted with irregularities and riddled with political chicanery, making them prone to fraud and bribery, often beyond the administrative scope and legal reach of local regulators. 
Such schemes are inherently counter-productive in that they seek to create ever more demand for polluting activities; they will continue doing dirty business until the last possible 'credit' has been sold, burning the last bit of fossil fuel from irrealistic carbon budgets that are fabricated inside the dark politics of compromise, campaign-funding and complacency. 
Such schemes are designed to profit from keeping the dirtiest power plants going and prolonging their lifetime beyond any reasonable purpose, in efforts to perpetuate the scheme itself and extract further money that, instead of being used to benefit the cleaner solutions, is then often used to finance further pollution elsewhere and spread the reach of such schemes. Such dreadful conduct is typically hidden away in a web of deceit custom-made to avoid the scrutiny of public accountibility.
And what if states fail to reach targets? The EPA suggestion to use such schemes effectively delays much local action, while encouraging states to negotiate with each other. This opens up the prospect of states blaming each other and taking legal action rather than genuine action. If the trappings of such schemes make states fail to reach targets, penalties could be imposed, but that still does not guarantee that targets will be reached; furthermore, given the complexities of such schemes, policing them poses additional burdens on administrators, police, courts and lawyers. Huge amounts of money and time have already been spent on court cases to postpone action, rather than on building genuine solutions.  
The best way to cater for non-compliance is to prepare federally-administered fees, to be levied on sales of polluting products, and with the revenues used to fund federal projects that do reduce emissions. As said, it's good for the EPA to encourage states to each work out how best to reduce their respective emissions, provided that each state does indeed reach set targets. Where a state fails to take the necessary action, the EPA should resume control and call for federal fees to be imposed in the respective state. 
The Clean Air Act calls for the 'best system of emissions reduction' to reduce emissions from power plants. The best system is one that levies fees on pollution and then uses the revenues to fund rebates on the cleaner products sold locally.  
Such combinations of fees and rebates (feebates) are the most effective way to make our economy sustainable, as part of the comprehensive action that is needed to avoid climate catastrophe. For more details on comprehensive and effective action, see the ClimatePlan blog

Related

- Methane Man
http://arctic-news.blogspot.com/2014/01/methane-man.html

- Climate Plan
http://climateplan.blogspot.com

Saturday, February 22, 2014

With business as usual life on earth is largely doomed

by John Davies

There is a very grave crisis in the Arctic which might only be resolved if the world uses geo-engineering to cool the Arctic and there are drastic cuts in greenhouse gas emissions.

Failing that most life on earth is doomed including humanity with devastating climate catastrophe starting no later than 2015 and a runaway Greenhouse Event starting in 2014.

I am sure that with an immense effort starting now humanity can be saved.

I am trying to obtain a meeting of the All Party Parliamentary Committee on Climate Change to discuss the desperate situation in the Arctic and the prognosis that with business as usual life on earth is largely doomed and also the steps humanity must take to save the global climate in April.

[ to be continued ]

Thursday, December 19, 2013

SAVING THE GLOBAL CLIMATE FROM RUNAWAY ARCTIC METHANE RELEASE AND SEA ICE LOSS

=  =  =  STATEMENT FOR IMMEDIATE RELEASE  =  =  =  NEWS RELEASE  =  =  =  DATE: DECEMBER 18, 2013  =  =  =

SAVING THE GLOBAL CLIMATE FROM RUNAWAY ARCTIC METHANE RELEASE AND SEA ICE LOSS

The Greenhouse Gases that human civilisation has emitted have warmed the Arctic more than any other area on Earth.

The reasons for this are well known and will not be repeated here. This has resulted in a loss of sea ice especially in the late summer. More recently still Methane has started to be released from Methane Hydrates especially from the East Siberian Arctic Shelf (ESAS). Emissions of Methane from this area increased from 8 to 17 Tg (teragrams or megaton) between 2009 and 2012 according to research done by Natalia Shakhova and in 2013 appear to be about 22 Tg.
See: arctic-news.blogspot.com/2013/11/quantifying-arctic-methane.html

My understanding is that the climate research organisations broadly accept that Methane emissions from the ESAS have risen substantially in the last few years, as indicated above, and are a serious concern, but they are still small compared to total global emissions of Methane and they do not accept that they will runaway in the near future. This needs examination.



The warming of the Arctic seems likely to lead to the total melting of the Arctic Sea Ice in late summer no later than the summer of 2018 and to massive release of Methane from the melting of Methane Hydrates beneath the ESAS by the same date leading to runaway Global Warming and the end of most life on earth. In 2018, and probably before, the Arctic will be much warmer and the rate of Methane emissions by 2016 will cause alarm worldwide. In 2016 it will probably no longer be possible to prevent a runaway greenhouse event. The problem is that until after a runaway event has started, drastic climate impacts will not occur, so most people will not be alarmed by the situation. Nonetheless, immediate action is essential to cool the arctic.

The reason for this is that the ice is melting earlier in summer than has been the case for several millennia, because of Arctic Warming caused by the increased concentration of Greenhouse Gases in the atmosphere. Methane is still being released in relatively small quantities from Methane Hydrates beneath the ESAS now, but this will accelerate rapidly as Methane concentrations increase in the arctic atmosphere, since they will absorb more sunlight and warm the Arctic, causing further Methane releases.

Arctic Methane Impact
Humanity may be able to prevent this from occurring, if drastic action is taken almost immediately, but if we don’t react then this will very rapidly become a runaway Greenhouse Event and out of our control. We must drastically reduce Greenhouse Gas emissions and take action to cool the arctic.

It is essential that your government responds to this emergency by publicising this worldwide and by trying to obtain a global agreement to drastically reduce global Greenhouse Gas emissions and to cool the Arctic.

John B Davies (personal)

This statement is supported by:
Prof. Peter Wadhams, Sam Carana, Paul Beckwith, Malcolm Light, John Nissen, Albert Kallio
Annie Mond, Carl Vilbrandt,


N.B. The truth of this prognosis should rapidly become apparent by measuring Methane emissions and concentration in the Arctic atmosphere in 2014. Thus very closely measuring arctic Methane emissions and atmospheric concentration is essential in 2014 and thereafter.

If you like to add your name added in support for this statement, please comment at the facebook post below.



Sunday, November 24, 2013

Quantifying Arctic Methane

The paper 'Ebullition and storm-induced methane release from the East Siberian Arctic Shelf', was published in the journal Nature Geoscience on November 24, 2013.

The paper is dedicated “to the memory of the crew of Russian vessel RV Alexei Kulakovsky”, the 11 people who died when their tugboat perished in efforts to assist the scientists who were measuring methane from a fishing boat.

The research team used methods including drilling into the seabed of the Laptev Sea and sonar to analyse methane releases in the water, seeking to quantify the significant amounts of methane that are bubbling up from the sea bed in the East Siberian Arctic Shelf (ESAS, rectangle on image below), the area with shallow seas north of Siberia covering some 810,800 square miles (2.1 million square kilometers). By comparison, the United States (land and water) covers an area of nearly 10 million square kilometers.

“We have proven that the current state of subsea permafrost is incomparably closer to the thaw point than terrestrial permafrost, and that modern warming does contribute to warming the subsea permafrost,” says Natalia Shakhova, adding that an increase in storminess in the Arctic would further speed up the release of methane.

The scientists estimate, on the basis of the sonar data, that “bubbles escaping the partially thawed permafrost inject 100–630 mg methane square meters daily into the overlying water column”, and suggest that “bubbles and storms facilitate the flux of this methane to the overlying ocean and atmosphere, respectively”.

Some 17 teragrams (Tg or Mt) of methane escapes annually from the ESAS, said Natalia Shakova, lead study author and a biogeochemist at the University of Alaska, Fairbanks. This is an upgrade from the earlier estimate of 8 Tg of annual outgassing from the ESAS (Shakhova et al. 2010).

While including a reference to this earlier paper (Shakhova et al. 2010), the IPCC did give much lower estimates for emissions from all hydrates globally and from permafrost (excl. lakes and wetlands), i.e. 6 and 1 Tg per year, respectively.

And by comparison, IPCC estimates for all global methane emissions from manmade and natural sources go from 526 Tg per year to 852 Tg per year, of which 514 to 785 Tg per year is broken down (mostly by hydroxyl).

Sadly, as discussed in an earlier post, the IPCC has decided NOT to warn people about the danger that methane from hydrates will lead to abrupt climate change within decades. Yet, when entering the data by Shakhova et al. in a spreadsheet, a linear trendline (green line on image below) shows methane release in the ESAS reaching 20 Tg by 2013 and 26 Tg by 2015.


An exponential trendline (red/blue line) shows methane release in the ESAS reaching 22 Tg by 2013 and 36 Tg by 2015. Extending that same exponential trendline further into the future shows methane release in the ESAS reaching 2 Gt by the year 2031 and 50 Gt by the year 2043.


Note that accumulated totals over the years will be much higher than the annual release. While the IPCC gives methane a perturbation lifetime of 12.4 years, this methane will persist in the Arctic for much longer because its release is concentrated in the Arctic where hydroxyl levels are also very low.

Globally, IPCC/NOAA figures suggest that abundance of methane in the atmosphere currently (2013) is 1814 parts per billion (ppb), rising with 5 or 6 ppb annually, and that this rise is caused by a difference of 8 Tg between the methane emitted (548 Tg, top-down estimate) and broken down annually (540 Tg, top-down estimate). It is also worth noting that the IPCC has increased methane's global warming potential to 86 over 20 years with climate-carbon feedbacks, while there are reasons to assume that methane's impact, especially short-term and in case of large abrupt releases in the Arctic, is even stronger. Furthermore, the IPCC now gives methane a Radiative Forcing (RF) of 0.97 W/m-2 (up from 48 W/m-2 in 2007 and relative to 1750), as illustrated by the image below.


According to the IPCC, methane levels in 1750 and 2011 were 722 ppb and 1803 ppb, respectively. The total global methane burden is estimated to be about 5 Gt, i.e. 5 petagrams (Pg) or 5,000 Tg. A back-of-envelope calculation sugests that the methane burden in 1750 was 5 Gt x (722 : 1803) = 2 Gt. Furthermore, methane's 0.97 W/m-2 RF is 42% of the total RF 2.29 W/m-2. Therefore, the 3 Gt of methane that has been added to the atmosphere since 1750 is responsible for almost half of all the global warming since that time.

For now, the IPCC's estimated annual increase in global methane levels may seem small, but this figure appears to be based on low-altitude data collected over the past few decades. The total methane burden may already be rising much more rapidly, also because methane is rising in the atmosphere, increasing the burden especially at higher altitudes, as evidenced by the increasing occurence of noctilucent clouds. In other words, the 8 Tg estimate may reflect older data related to changes in lower-altitude measurements only, but the total methane burden may well be rising much more rapidly due to increases at higher altitudes. Further analysis comparing satellite data at different altitudes over the years could verify this.

An earlier post estimated that as much as 2.1 Mt (or 2.1 Tg) of methane could have been released abruptly end 2011. If you compare the animation of that earlier post with the recent animation, then current abrupt releases from the sea floor of the Arctic Ocean appear to be even higher.

As said, methane releases from the Arctic Ocean may for now seem small and may not yet make global temperatures rise much, but nonetheless the methane cloud hanging over the Arctic is contributing to warming locally. Combined with the increased likelyhood of extreme weather and rapid loss of ice and snow cover in the Arctic, this could make water temperatures in the Arctic Ocean rise even further, causing further destabilization of methane hydrates. Furthermore, the mechanical force of methane release from hydrates (rapidly expanding 160 times in volume) itself can also contribute to hydrate destabilization. Seismic activity could also lead to destabilization. Indeed, there are many factors that could contribute to exponential rise of methane release from the Arctic Ocean, as discussed in the post on methane hydrates, which calls for comprehensive and effective action, such as discussed at the Climate Plan blog.


References

Ebullition and storm-induced methane release from the East Siberian Arctic Shelf, by Natalia Shakhova, Igor Semiletov, Ira Leifer, Valentin Sergienko, Anatoly Salyuk, Denis Kosmach, Denis Chernykh, Chris Stubbs, Dmitry Nicolsky, Vladimir Tumskoy & Örjan Gustafsson (2013)
http://www.nature.com/ngeo/journal/vaop/ncurrent/full/ngeo2007.html

Arctic storms speed up release of methane plumes, by Fred Pearce
http://www.newscientist.com/article/dn24639-arctic-storms-speed-up-release-of-methane-plumes.html

Twice as Much Methane Escaping Arctic Seafloor, by Becky Oskin
http://www.livescience.com/41476-more-arctic-seafloor-methane-found.html

Extensive methane venting to the atmosphere from sediments of the East Siberian Arctic shelf, by Natalia Shakhova, Igor Semiletov, Anatoly Salyuk, Vladimir Yusupov, Denis Kosmach, and Örjan Gustafsson, in: Science, 327, 1246-1250 (2010).
http://www.sciencemag.org/content/327/5970/1246.abstract

On carbon transport and fate in the East Siberian Arctic land–shelf–atmosphere system, by Semiletov et al. (2012)
http://iopscience.iop.org/1748-9326/7/1/015201

Intergovernmental Panel on Climate Change (IPCC), AR5 Working Group 1
http://www.climatechange2013.org/



Friday, May 10, 2013

1250 - New group calls for action on methane

A new group, named 1250, calls for governments around the world to take action on methane.

Just like 350 parts per million has become a popular target for carbon dioxide, the group similarly advocates a target for methane, aiming for a reduction of methane to 1250 parts per billion (ppb).

On several occasions in April, 2013, the hourly average carbon dioxide concentration in the atmosphere of Mouna Loa, Hawaii, surpassed 400 parts per million (ppm). On May 9, 2013, the daily mean concentration of carbon dioxide in the atmosphere of Mauna Loa also surpassed 400 ppm. The National Oceanic and Atmospheric Administration (NOAA) comments that before the Industrial Revolution in the 19th century, global average carbon dioxide was about 280 ppm. During the last 800,000 years, carbon dioxide fluctuated between about 180 ppm during ice ages and 280 ppm during interglacial warm periods. Today’s rate of increase is more than 100 times faster than the increase that occurred when the last ice age ended.

On May 9, 2013, at another place on Earth, another significant event took place. Methane levels above Antarctica reached a peak of 2249 ppb, highlighting the need for action on methane.

The group 1250 advocates a similar target for methane, i.e. a reduction of methane to 1250 parts per billion.

“Methane is far more potent than carbon dioxide as a greenhouse gas, making it important to reduce levels of methane in the atmosphere,” explains founder Nathan Currier; “1250 is not just an advocacy group for methane cuts, however. Rather, it is a group focusing on near-term climate as a whole, and on practical pathways to constructing a ‘climate bridge’ towards a stable and sustainable future.”

The launch of the group is accompanied by the release of the chart below showing the very high methane levels that have been recorded over Antarctica recently. The chart was prepared by Sam Carana, who also is a founding member of 1250.


These very high methane emissions occur on the heights of East Antarctica. Antarctica is covered in a thick layer of ice. It appears that these very high emissions are caused by methane from hydrates that is escaping in the form of free gas bubbling up through the ice sheet.

The danger is that such emissions will escalate, not only over Antarctica, but also on the Qinghai-Tibet Plateau and in the Arctic. For more on this, see the methane-hydrates blog.

The group 1250 was set up specifically to address to need for a comprehensive approach to the challenges posed by climate change. The group now invites other groups to a dialogue regarding the details.

The group has a website at http://1250now.org/ and encourages people to join its mailing list and sign its petition.

Friday, January 11, 2013

President Obama, here's a climate plan!


President Obama, now is the time to act on climate change! Climate change won't wait. There are encouraging signs indicating that a summit is being organized, to be hosted at the White House, to launch a comprehensive climate action plan with broad-based and bipartisan support.

What plan? Well, here's a climate plan!



The first line of action of most climate plans is to cut emissions. Two types of feebates, working separately, yet complimentary, can cut emissions most effectively and can be implemented locally in a budget-neutral way, without requiring complicated international agreements:
  1. energy feebates (pictured above) in sectors such as electricity, heating and transport, and 
  2. feebates in sectors such as agriculture, land use, waste management and construction (pictured below).
Pictured on the left are feebates that impose fees on sales of Portland cement, nitrogen fertilizers and livestock products. This will make further cuts in emissions.

The revenues are then used to fund rebates on clean construction and on soil supplements containing biochar and olive sand, which will remove carbon dioxide from the atmosphere and store it in buildings, soil, river banks, roads and pavement.

Working seperately, yet complimentary, energy feebates and feebates in agriculture and other sectors can dramatically bring down carbon dioxide levels in the atmosphere and oceans; as a result, atmospheric carbon dioxide could be brought back to pre-industral levels of around 280ppm by the end of the century.

For further discussion, also see Towards a Sustainable Economy
Thus, these two feebates will be effective on two lines of action, i.e. on cutting emissions and on reducing carbon dioxide levels in the atmosphere and oceans.

Even with these measures, temperatures will keep rising for some time, as excess ocean heat will get transferred to the atmosphere over the years and as aerosols (particularly sulfur) fall away that are currently emitted when fuel is burned and thus mask the full wrath of global warming.

Continued warming comes with numerous feedbacks. Combined, these feedbacks threaten to trigger runaway global warming, i.e. warming that will cause mass death, destruction and extinction.

How to avoid mass-scale death, destruction and extinction
This means that, in addition to the first two lines of action, further lines of action will be necessary, i.e. Solar radiation management, and Methane management and further action. Further action includes regulatory measures such as ending commercial flights over the Arctic and support for pyrolysis to avoid burning of biomass. The image below pictures several methods of Arctic methane management that should get high priority, given the threat of hydrate destabilization in the Arctic.
Arctic Methane Management

Fees imposed on commercial flights could fund solar radiation management, while the feebates described above will also be most effective in further lines of action, i.e. in Arctic methane management and further action.

Wednesday, January 2, 2013

Turning forest waste into biochar

Too much biomass waste in tundra and boreal forests makes them prone to wildfires, especially when heatwaves strike. Furthermore, leaving biomass waste in the forest can cause a lot of methane emisions from decomposition.

In order to reduce such methane emissions and the risk of wildfires, it makes sense to reduce excess biomass waste in fields and forests. Until now, this was typically done by controlled burning of biomass, which also causes emissions, but far less than wildfires do. Avoiding wildfires is particularly important for the Arctic, which is vulnerable to soot deposits originating from wildfires in tundra and boreal forest. Such soot deposits cause more sunlight to be absorbed, accelerating the decline of snow and ice in the Arctic.


A team of scientists at University of Washington, sponsored by the National Science Foundation, has developed a way to remove woody biomass waste from forests without burning it in the traditional way. The team has developed a portable kiln that can be assembled around a heap of waste wood and convert it to biochar on the spot, while the biochar can also be burried in the soil on the spot.

Demonstration in Kerby, Oregon,
Nov. 6, 2012, 
 by Carbon Cultures
Credit:
Marcus Kauffman at Flickr
The team initially started testing the effectiveness of a heat-resistant blanket thrown over woody debris.  The team then developed portable panels that are assembled in a kiln around a slash pile.

Students have set up a company, Carbon Cultures, to promote the technology and to sell biochar. CEO of Carbon Cultures is Jenny Knoth, also a Ph.D. candidate in environmental and forest sciences.

The kiln restricts the amount of oxygen that can reach the biomass, which is transformed by pyrolysis into biochar. The woody waste is heated up to temperatures of about 1,100 degrees Fahrenheit (600 Celsius), as the kiln transforms some 800 pounds of wood into 200 pounds of biochar in less than two hours. “We also extinguish with water because it helps keep oxygen out and also activates the charcoal [making it more fertile in soil].”

Currently, the total costs of disposing of forest slash heaps (the collections of wood waste) approximate a billion dollars a year in the United States, according to Knoth.

And of course, adding biochar to the soil is a great way to reduce carbon dioxide levels in the atmosphere. “Biochar is proven to fix carbon for hundreds of thousands of years,” Knoth said.
Demonstration in Kerby, Oregon, November 6, 2012, organized by Carbon Cultures Credit: Marcus Kauffman at Flickr

As said, when biomass waste is left in the open air, methane emissions are produced during its decomposition. Moreover, such waste will fuel wildfires, which produce huge amounts of emissions. The traditional response therefore is to burn such waste. Pyrolyzing biomass produces even less greenhouse gases and less soot, compared to such controlled burning.

Biochar is produced in the process, which can be added to the soil on the spot. This will help soil retain moisture, nutrients and soil microbes, making forests more healthy, preventing erosion and thus reduces the risk of wildfires even further, in addition to the reduction already achieved by removal of surplus waste.

A healthy forest will retain more moist in its soil, in the air under its canopy, and in the air above the forest through expiration, resulting in more clouds that act as sunshades to keep the forest cool and return the moist to the forest through rainfall. Forests reinforce patterns of air pressure and humidity that result in long-distance air currents that bring moist air from the sea inland to be deposited onto the forest in the form of rain. Finally, clouds can reflect more sunlight back into space, thus reducing the chance of heatwaves.

References

Recycling wood waste - The Daily of the University of Washington
Helping Landowners with Waste Wood While Improving Agribusiness and Energy - National Science Foundation

Related

- Biochar
- CU-Boulder gets into biochar


Saturday, December 1, 2012

Aviation Policies

The European Union's policy on Aviation Emissions

From the start of 2012, the European Union (EU) required its members to include emissions from flights arriving at and departing from their airports in the EU scheme of emissions allowances and trading, while encouraging other nations to take equivalent measures. The EU exempts biofuel and claims to take a 'comprehensive approach' to reducing environmental impacts of aviation. To create space for political negotiations to get an international agreement regulating emissions from aviation, the EU has meanwhile postponed implementation of its directive by one year.

What kind of international agreement could be reached on aviation emissions? What policies work best? How do aviation policies fit into a comprehensive approach?

A Comprehensive Plan of Action on Climate Change

A comprehensive plan is best endorsed globally, e.g. through an international agreement building on the Kyoto Protocol and the Montreal Accord. At the same time, the specific policies are best decided and implemented locally, e.g. by insisting that each nation reduces specific emissions by a set annual percentage, and additionally removes a set annual amount of carbon dioxide from the atmosphere and the oceans, followed by sequestration, proportionally to its current emissions.

Policy goals are most effectively achieved when policies are implemented locally and independently, with separate policies each addressing the specific shifts that are each needed to reach agreed targets. Each nation can work out what policies best fit their circumstances, as long as they each independently achieve agreed targets. Counting emissions where they occur will encourage nations to adopt effective policies, such as imposing fees on the sales of products in proportion to the emissions they cause, and adopting product standards that ban products that would otherwise cause unacceptably high emissions while clean alternatives are readily available.


Clean Energy Policies

Policies aiming to achieve a shift to clean energy will apply to many sectors such as transportation (including aviation), power plants, and industry and buildings which are also large consumers of fossil fuel. The above image also shows policies specifically targeting aviation, in addition to clean energy policies that apply across sectors.

The image below proposes feebates as the most effective way to accomplish the necessary shift to clean energy. In such feebates, fees are imposed on polluting energy and associated facilities, with revenues used - preferably locally - to fund rebates on clean energy and associated facilities.


In line with such feebates, each nation could impose fees on jetfuel, while using the revenues for a variety of purposes, preferably local clean energy programs. Where an airplane lands arriving from a nation that has failed to add sufficient fees, the nation where the airplane lands could impose supplementary fees. Such supplementary fees should be allowed under international trade rules, specifically if revenues are used to fund direct air capture of carbon dioxide.

Aviation Policies

As said, apart from clean energy policies, it makes sense to additionally implement policies specifically targeting aviation. Airplanes not only cause carbon dioxide emissions, but also cause other emissions such as black carbon and NOx, contrails and cirrus cloud effects. The EU emissions scheme only targets a limited set of emissions, while also looking at their global warming potential, rather than the potential of emissions to cause warming locally, specifically in the Arctic. A joint 2011 UNEP/WMO report mentioned many measures to reduce black carbon and tropospheric ozone, adding that their implementation could reduce warming in the Arctic in the next 30 years by about two-thirds.

A 2012 study by Jacobson et al. concludes that cross-polar flights by international aviation is the most abundant direct source of black carbon and other climate-relevant pollutants over the Arctic. Rerouting cross-polar flights to instead circumnavigate the Arctic Circle therefore makes sense. While such rerouting consumes more fuel, it could reduce fuel use and emissions within the Arctic Circle by 83% and delay pollutant transport to the Arctic.

Given the need to act on warming in the Arctic, it makes sense to ban cross-polar flights. To further reduce the flow of pollutants to the Arctic caused by aviation, it makes sense to add fees on all jet flights. Such fees on jet flights would be additional to the above fees on fuel. This could further facilitate a shift from aviation toward cleaner forms of transportation, such as high speed rail. Where the revenues of such fees are used to fund direct air capture, they could also help kickstart an industry that could produce synthetic jetfuel and that could be instrumental in bringing atmospheric levels of carbon dioxide back to 280ppm.

Friday, June 22, 2012

Fires are raging again across Russia

NASA satellite image, acquired April 24, 2012 
Back in April, thousands of hectares were burning when NASA captured above image of fires in a rural area north of Omsk, a city in south central Russia near the Kazakhstan border, according to the NASA report accompanying the image.

In May 6, 2012, the Voice of Russia reported some 11000 hectares (about 42.4 square miles) of forests in Siberia to be on fire.

Lena River, Siberia - Wikipedia
Earlier this month, eight Russian paratroopers died fighting a massive forest fire in southern Siberia, reports UPI.

Russia has now declared a state of emergency in several eastern regions, due to hundreds of wildfires, reports NASA.

Smoke from fires burning in Siberia can travel across the Pacific Ocean and into North America. A NASA analysis of satellite images shows that aerosols from fires took six days to reach America's shores. In certain cases they saw smoke that actually circles the globe, describes NASA.

These fires are causing a lot of emissions, including soot that can be deposited on the ice in the Arctic, resulting in more sunlight to be absorbed which will speed up the melt.

Furthermore, high temperatures in Siberia will warm up the water in rivers, causing warm water to flow into the Arctic, as illustrated by above Wikipedia image highlighting the Lena River and the August 3, 2010, satellite image below, showing warm river water heat up the Laptev Sea (degrees Celsius).



The image below was edited from a report by NOAA’s National Climatic Data Center, describing that the globally-averaged temperature for May 2012 marked the second warmest May since record keeping began in 1880.

NOAA image, temperature anomalies for May 2012
The image below was edited from a recent NASA report describing a total of 198 fires burning across Russia. As the inset shows, the fires on the main image are part of an area where further fires are raging.

NASA satellite image, acquired June 18, 2012
Below are two maps from the NOAA Climate Prediction Center, showing temperature anomalies in Southern Russia for the week from June 10th to 16th, 2012, of over 7 degrees Celsius (12.6 degrees Fahrenheit), with temperatures in areas around the Caspian Sea reaching over 40 degrees Celsius (104 degrees Fahrenheit).

Perhaps even more worrying than high temperatures in Southern Russia are high temperature anomalies in Northern Siberia, some of which were in the 16-18 degrees Celsius range for the week from June 10-16th, 2012 (see NOAA image below).
Satellite image June 15, 2012 from DMI - http://ocean.dmi.dk/arctic/satellite/index.uk.php

Source: mapsofworld.com via Sam on Pinterest