Planetary Boundary Nr 9: Atmospheric aerosol loading

2010-03-10
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Planetary Boundary Nr 9: Atmospheric aerosol loading

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This is considered a planetary boundary for two main reasons: (i) the influence of aerosols on the climate system and (ii) their adverse effects on human health at a regional and global scale. Without aerosol particles in the atmosphere, we would not have clouds. Most clouds and aerosol particles act to cool the planet by reflecting incoming sunlight back to space. Some particles (such as soot) or thin high clouds act like greenhouse gases to warm the planet. In addition, aerosols have been shown to affect monsoon circulations and global-scale circulation systems. Particles also have adverse effects on human health, causing roughly 800,000 premature deaths worldwide each year. While all of these relationships have been well established, all the causal links (especially regarding health effects) are yet to be determined. It has not yet been possible specific threshold value at which global-scale effects will occur; but aerosol loading is so central to climate and human health that it is included among the boundaries.

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Planetary Boundary Nr 8: Nitrogen and phosphorus inputs to the biosphere and oceans

2010-03-3
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Planetary Boundary Nr 8: Nitrogen and phosphorus inputs to the biosphere and oceans

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Human modification of the nitrogen cycle has been even greater than our modification of the carbon cycle. Human activities now convert more N2 from the atmosphere into reactive forms than all of the Earth´s terrestrial processes combined. Much of this new reactive nitrogen pollutes waterways and coastal zones, is emitted to the atmosphere in various forms, or accumulates in the terrestrial biosphere. A relatively small proportion of the fertilizers applied to food production systems is taken up by plants. A significant fraction of the applied nitrogen and phosphorus makes its way to the sea, and can push marine and aquatic systems across thresholds of their own. A concrete example of this effect is the decline in the shrimp catch in the Gulf of Mexico due to hypoxia caused by fertilizer transported in rivers from the US Midwest.

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Planetary Boundary Nr 7: Land system change

2010-02-24
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Planetary Boundary Nr 7: Land system change

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Land is converted to human use all over the planet. Forests, wetlands and other vegetation types are converted primarily to agricultural land. This land-use change is one driving force behind reduced biodiversity and has impacts on water flows as well as carbon and other cycles. Land cover change occurs on local and regional scales but when aggregated appears to impact the Earth System on a global scale. A major challenge with setting a land use-related boundary is to reflect not only the needed quantity of unconverted and converted land but also its function, quality and spatial distribution.

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Planetary Boundary Nr 6: Freshwater consumption and the global hydrological cycle

2010-02-17
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Planetary Boundary Nr 6: Freshwater consumption and the global hydrological cycle

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The freshwater cycle is both a major prerequisite for staying within the climate boundary, and is strongly affected by climate change. Human pressure is now the dominating driving force determining the function and distribution of global freshwater systems. The effects are dramatic, including both global-scale river flow change and shifts in vapour flows from land use change. Water is becoming increasingly scarce and by 2050 about half a billion people are likely to have moved into the water-stressed category. A water boundary related to consumptive freshwater use has been proposed to maintain the overall resilience of the Earth system and avoid crossing local and regional thresholds ‘downstream´.

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Planetary Boundary Nr 5: Ocean acidification

2010-02-10
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Planetary Boundary Nr 5: Ocean acidification

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Around a quarter of the CO2 humanity produces is dissolved in the oceans. Here it forms carbonic acid, altering ocean chemistry and decreasing the pH of the surface water. Increased acidity reduces the amount of available carbonate ions, an essential building block used for shell and skeleton formation in organisms such as corals, and some shellfish and plankton species. This will seriously change ocean ecology and potentially lead to drastic reductions in fish stocks. Compared to pre-industrial times, surface ocean acidity has increased by 30%.

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The ocean acidification boundary is a clear example of a boundary which, if transgressed, will involve very large change in marine ecosystems, with ramifications for the whole planet. It is also a good example of how tightly connected the boundaries are, since atmospheric CO2 concentration is the underlying controlling variable for both the climate and the ocean acidification boundary.

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Planetary Boundaries Nr 4: Climate Change

2010-02-3
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Planetary Boundaries Nr 4: Climate Change

photo_5589_20090405Image: Jennifer Renee / FreeDigitalPhotos.net

We have reached a point at which the loss of summer polar ice is almost certainly irreversible. From the perspective of the Earth as a complex system, this is one example of the sharp threshold above which large feedback mechanisms could drive the Earth system into a much warmer, greenhouse gas-rich state with sea levels metres higher than present. The weakening or reversal of terrestrial carbon sinks, for example through the ongoing destruction of the world´s rainforests, is another such interdependent tipping point. Recent evidence suggests that the Earth System, now passing 387 ppmv CO2, has already transgressed this Planetary Boundary. A major question is how long we can remain over this boundary before large, irreversible changes become unavoidable.

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Read more here.

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Planetary Boundaries Nr 3: Chemicals dispersion

2010-01-27
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Planetary Boundaries Nr 2: Chemicals dispersion

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Emissions of persistent toxic compounds such as metals, various organic compounds and radionuclides, represent some of the key human-driven changes to the planetary environment. There are a number of examples of additive and synergic effects from these compounds. These effects are potentially irreversible. Of most concern are the effects of reduced fertility and especially the potential of permanent genetic damage. As an example, organism uptake and accumulation to sub-lethal levels increasingly cause a dramatic reduction of marine mammal and bird populations. At present, we are unable to quantify this boundary; however, it is nonetheless considered sufficiently well defined to be on the list.

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Planetary Boundary Nr 2: Biodiversity

2010-01-20
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Planetary Boundaries Nr 2: Biodiversity

Nyfiken-GrönImage: Susie B / FreeDigitalPhotos.net

In the Millennium Ecosystem Assessment of 2005, it was concluded that changes in biodiversity due to human activities were more rapid in the past 50 years than at any time in human history, and the drivers of change that cause biodiversity loss and lead to changes in ecosystem services are either steady, show no evidence of declining over time, or are increasing in intensity. These large rates of extinction can be slowed by judicious projects to enhance

habitat and build appropriate connectivity while maintaining high agricultural productivity. Further research is needed to determine whether a boundary based on extinction rates is sufficient, and whether there are reliable data to support it.

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Planetary Boundary Nr 1: Stratospheric Ozone Layer

2010-01-13
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Planetary Boundary Nr 1: Stratospheric Ozone Layer

The stratospheric ozone layer filters out ultraviolet radiation from the sun. If this layer decreases, increasing amounts of ultraviolet (UV) radiation will reach ground level and can cause a higher incidence of skin cancer in humans as well as damage to terrestrial and marine biological systems. The appearance of the Antarctic ozone hole was proof that increased concentrations of anthropogenic ozone depleting substances, combined with polar stratospheric clouds, had moved the Antarctic stratosphere into a new regime. Fortunately, because of the actions taken as a result of the Montreal Protocol, we appear to be on the path that will allow us to stay within this boundary.

Read more here.


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The Planetary Boundaries Concept

2009-12-30
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See Johan Rockström give an introduction to the planetary boundaries concept:

New approaches are needed to help humanity deal with climate change and other global environmental threats that lie ahead in the 21st century. A group of 28 internationally renowned scientists propose that global biophysical boundaries, identified on the basis of the scientific understanding of the Earth System, can define a ‘safe planetary operating space´ that will allow humanity to continue to develop and thrive for generations to come.

This new approach to sustainable development was conveyed in Nature and Ecology and Society where the scientists have made a first attempt to identify and quantify a set of nine planetary boundaries.

- The human pressure on the Earth System has reached a scale where abrupt global environmental change can no longer be excluded. To continue to live and operate safely, humanity has to stay away from critical ‘hard-wired´ thresholds in Earth´s environment, and respect the nature of planet’s climatic, geophysical, atmospheric and ecological processes, says lead author Johan Rockström, Director of the Stockholm Resilience Centre.

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He warns that transgressing planetary boundaries may be devastating for humanity, but if we respect them we have a bright future for centuries ahead.

Nine boundaries were identified including climate change, stratospheric ozone, land use change, freshwater use, biological diversity, ocean acidification, nitrogen and phosphorus inputs to the biosphere and oceans, aerosol loading and chemical pollution.

Source: Stockholm Resilience Center

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Grattis Johan Rockström!

2009-12-21
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Johan Rockstörm Alexandra OdevallAlexandra Odevall, Nyfiken-Grön och Johan Rockström, Årets svensk 2009

Grattis Johan Rockström, Årets svensk 2009!

Juryns motivering: “Professor Johan Rockström – chef för Stockholm Resilience Centre och Stockholm Environment Institute – till­delas utmärkelsen Årets svensk 2009 för sitt engagerande och ­entusiasmerande arbete för en hållbar utveckling.”

Källa: Fokus.

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Vad är COP15?

2009-12-16
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cop15_Nyfiken-GrönVad är COP15? Det är iaf säkert att det är det senaste samtalsämnet precis överallt, men vad är det?

Såhär ligger det till:

COP15 står för Conference of the parties och detta är det 15:e mötet som hålls av de 192 länder som har ratificerat FN:s klimatkonvention från 1992. Anledningen till att just detta möte har blivit så omtalat är för att det satts ihop på så kort varsel. Från och med 2013 gäller nämligen inte Kyotoprotokollet längre och det som bestäms under COP15 ska börja gälla när Kyotoprotokollet tar slut.

Kyotoprotokollet gäller även bara ca 30 st i-länder och det nya avtalet ska omfatta hela världen. 15000 personer är ackrediterade till mötet och Barack Obama och Kronprinsessan Victoria ska dit.

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Waiting for Godot and some real action in Copenhagen

2009-12-10
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SDU5-09_miniA few weeks ago I saw one of the most influential plays ever written: “Waiting for Godot”, by Samuel Beckett – about the two characters, Vladimir and Estragon, who wait and wait and wait for someone named Godot, who never shows up.

Because the play is so elemental it invites all kinds of interpretations, be they social, political or religious. I, myself, couldn’t help thinking of the upcoming climate meeting in Copenhagen, aiming to secure a new global climate change treaty to replace the Kyoto protocol. Interestingly, the version of the Godot-play I saw in Stockholm even included the word “climate villain” and made me think even more of climate deals and real action that never seem to arrive.

Beckett himself once described his play as “nothing happens, twice,” since the two acts are “in several respects repetitions of each other.” In this respect, however, there is a major difference between climate change and Becket’s famous play: climate change is a one-acter – we have to act now to avoid runaway irreversible climate changes. Many leading scientists, climate experts, and progressive national governments now refer to 350 parts per million as the safe upper limit for CO2 in our atmosphere. We are, however, already above the safe zone (or beyond the “planetary boundary” as a group of scientists put it recently) at our current 390 ppm, and unless we are able to rapidly return below 350 ppm this century, we risk reaching tipping points and irreversible impacts, e.g., rapid melting of the Greenland ice sheet and huge methane releases from increased permafrost melt.

So, when delegates now meet in Copenhagen to try to finalize a new global climate change agreement, it is crucial that they are informed by the most recent science on tipping points and planetary boundaries – including how the different boundaries of everything from water resources and ocean acidification to land-use change and biodiversity loss interact.

Copenhagen – not the time for fairy tale politics
One of the most outspoken environmental NGOs recently reminded us about another literary masterpiece we should try to avoid to mirror in Copenhagen: The Emperor’s New Clothes by Danish fairy tale author Hans Christian Andersen: “You know the story. The clever tailors that convince a kingdom that only intelligent people can see the clothes they make. Everyone talks about how fine the emperor’s outfit is, until one audacious voice pipes up to say there’s nothing there, the king is naked. When the reality of climate change politics is stripped of rhetoric, most of the industrialised world’s leaders are seriously underdressed, and Obama isn’t wearing a stitch.”

In conclusion, Copenhagen is not the time for “fairy tale politics” and show-off. It should be the time for real action and a binding climate agreement. Or, really, it should not be only about curing the planet’s fever. What we really need is some kind of a global binding sustainability agreement, which also takes into account how we manage the planet’s ecosystems and the goods and services they generate to our human societies. We must quit discussing one environmental issue at the time. We know that the different issues are intertwined, not only with each other, but also with a wide array of socio-economic aspects like poverty, population growth, democracy, power relationships, financial crises and so forth.

In Waiting for Godot, the characters just continue their irrational waiting. In climate/sustainability negotiations, however, subsiding into the futility of the situation – repeating over and over again, “Nothing to be done” – is not an option.

/Fredrik Moberg, Editor Sustainable Development Update, Albaeco

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CSRguiden om Nyfiken-Grön

2009-12-1
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CSRguiden_om_Nyfiken-Grön

Såhär skriver CSRguiden om Nyfiken-Grön miljöekonomer:

“Ekosystemtjänster – ett verktyg för hållbar utveckling

Alexandra Odevall, miljöekonom som driver företaget och bloggen Nyfiken-Grön har på uppdrag av Krinova Science Park i samarbete med Kristianstad biosfärkontor och Högskolan Kristianstad skrivit en rapport som är värd att läsa. Rapporten berör frågan: Hur får man med ekosystemtjänster i beräkningen så att de styr vardagsbeslut hos individer, organisationer och den styrande makten?”

Ekosystemtjänster är de nyttor vi får från naturen och dess ekosystem. Vissa är livsavgörande för oss, som t.ex. syre och dricksvatten. Dessa tjänster och ESR metoden diskuteras även idag på ett seminarium som anordnas av Svenskt Näringsliv

ESR (Corporate Ecosystem Services Review) metoden som är mer och mer använda av företag. Det är en metodik som hjälper företag att analysera sina risker och affärsmöjligheter utifrån vilka ekosystemtjänster företaget är beroende av och vilka de påverkar. Metodiken ger företagen tillgång till resultaten från forskningsstudien Millennium Ecosystem Assessement, vilket är en motsvarighet till IPCC på ekosystemen.

Är ni intresserade av att höra mer om specifikt ESR metoden så kontakta Nyfiken-Grön.”

Läs mer om CSRguiden här.

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När vi handlar misslyckas vi ibland

2009-11-19
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Människan har genom tiderna sett naturen som något statiskt och kontrollerbart. Det är inte så konstigt när det tex står i Bibeln i Första Moseboken: ” Gud sade: Vi skall göra människor som är vår avbild, lika oss. De skall härska över havets fiskar, himlens fåglar, boskapen, alla vilda djur och alla kräldjur som finns på jorden” Det är ju ändå vår äldsta boksamling som ligger som grund för vårt samhälle, oavsett den moderna sekulariseringen.

Men så är det inte. Naturen är organisk och dynamisk. Man kan se det lite som nationalekonomi. Har man väl börjat kontrollera en marknad med skatter och tullar så är det extremt svårt att avveckla dessa om inte omöjligt. Så är det även med naturen. Om vi börjar röra om och kontrollera så måste vi också fortsätta ta hand om den, annars kraschar den. Och gör den det är det näst intill omöjligt att återställa den.

Man pratar ofta om en tipping point. Att vår påverkan på naturen mer eller mindre inte märks pga det inbyggda buffertsystemet, resiliensen, förrän systemet är överbelastat och allt kraschar. Som en blixt från klar himmel. Man kan se det som en båt som tippar över. Kanten kommer närmare och närmare ytan men ingen större förändring syns förrän båtens kant precis når vattenytan. PANG! så har båten sjunkit och det är näst intill omöjligt att få upp den igen.

För att vidare förstå krisen vi befinner oss i med ekosystem som tappat sin resiliens, utsläpp och klimatförändringar så tänkte jag dra en liknelse med finanskrisen. Finanskrisen, kan man säga, grundar sig i att vi överbelånade systemet. Vi tänkte kortsiktigt och överbelastade systemet tills det inte höll längre. Resultatet blev höga kostnader. Mycket högre än om vi hade tänkt långsiktigt. Så är det även med naturen. Det är också ett dynamiskt system som överbelånas utifrån kortsiktiga mål men här har vi möjligheten till att ingripa innan det är för sent!

Så vad ska vi göra? Det beror på vem du är och vad du har för möjligheter. Men alla kan göra något och jag tror att det viktiga är att vi lever i förändringen. Jag tror att det är bättre att göra något som är fel än att inte göra något alls. Som Romin Roland sa:

” När vi handlar misslyckas vi ibland men om vi inte handlar alls misslyckas vi jämt”

/Alexadnra, Nyfiken-Grön

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