Download presentation

Presentation is loading. Please wait.

Published byBarry Boyd Modified over 3 years ago

1
Start Presentation © Prof. Dr. François E. Cellier Internal Seminar: Groups Arbenz/Cellier/Gander/Hinterberger April 3, 2007 Alliance for Global Sustainability

2
Start Presentation © Prof. Dr. François E. Cellier Internal Seminar: Groups Arbenz/Cellier/Gander/Hinterberger April 3, 2007 Table of Contents Mathis Wackernagel: Global Footprint NetworkMathis Wackernagel: Global Footprint Network Christian Azar: Turning the TideChristian Azar: Turning the Tide Dennis Meadows: Limits to GrowthDennis Meadows: Limits to Growth The Spanish PathwayThe Spanish Pathway Conclusions

3
Start Presentation © Prof. Dr. François E. Cellier Internal Seminar: Groups Arbenz/Cellier/Gander/Hinterberger April 3, 2007 Disclaimer This report contains some material taken from the proceedings of the AGS Conference. Those slides are interspersed with material produced by me.proceedings of the AGS Conference Since the proceedings were only published in PDF format, all material taken from the proceedings has been included in pixel graphics, i.e. by capture and paste. The material pasted from other documents is clearly marked by hyperlinks. The typeset text is all mine. Especially, since the material from the Spanish pathway was not included in the proceedings, that material (or rather, the interpretation thereof) is all mine. Finally and most importantly, the conclusions presented on the last page of this document are not official conclusions reached by the conference, but rather, they are my personal conclusions, for which I carry sole responsibility.conclusions

4
Start Presentation © Prof. Dr. François E. Cellier Internal Seminar: Groups Arbenz/Cellier/Gander/Hinterberger April 3, 2007 Global Footprint Network Mathis Wackernagel

5
Start Presentation © Prof. Dr. François E. Cellier Internal Seminar: Groups Arbenz/Cellier/Gander/Hinterberger April 3, 2007

6
Start Presentation © Prof. Dr. François E. Cellier Internal Seminar: Groups Arbenz/Cellier/Gander/Hinterberger April 3, 2007 Cuba

7
Start Presentation © Prof. Dr. François E. Cellier Internal Seminar: Groups Arbenz/Cellier/Gander/Hinterberger April 3, 2007 The Good News … It takes relatively little additional resources to dramatically increase the quality of life of the poor nations.

8
Start Presentation © Prof. Dr. François E. Cellier Internal Seminar: Groups Arbenz/Cellier/Gander/Hinterberger April 3, 2007 Cuba

9
Start Presentation © Prof. Dr. François E. Cellier Internal Seminar: Groups Arbenz/Cellier/Gander/Hinterberger April 3, 2007 Why is the European Gradient Steeper? It is steeper, because we live more wastefully. The poor nations use their few resources in an almost optimal fashion. They cannot afford to waste anything. We don’t think much about how we might use our resources more efficiently. We heat our houses to high temperature values, while keeping the windows open. We buy food that we don’t need. We maintain secondary homes that we don’t need. ……

10
Start Presentation © Prof. Dr. François E. Cellier Internal Seminar: Groups Arbenz/Cellier/Gander/Hinterberger April 3, 2007 Cuba

11
Start Presentation © Prof. Dr. François E. Cellier Internal Seminar: Groups Arbenz/Cellier/Gander/Hinterberger April 3, 2007 No Strings Attached The U.S. and the United Arab Emirates consume simply because they can, without increasing their quality of life any further. It is human nature to think first about themselves individually, and only later about the species as a whole. Humans are constantly in competition with each other. They increase their feeling of “self-worth” by taking something away from another human being. Example: Easter Islands.Easter Islands If we want to survive as a species, while keeping up a decent quality of life, we must learn to become … … not “Berliners,” but “Cubans.”

12
Start Presentation © Prof. Dr. François E. Cellier Internal Seminar: Groups Arbenz/Cellier/Gander/Hinterberger April 3, 2007 The Bad News … Becoming “Cubans” won’t happen on its own. If the Cubans were given a choice, they would gladly vote to become the 51 st State in the Union … if only they could drive around in these sinfully gorgeous SUVs, heat their homes in the winter to 24 o C, while cooling them down in the summer to 18 o C. We achieve the transition either by regulations … or the planet will achieve it for us, probably in ways that we won’t like a bit.

13
Start Presentation © Prof. Dr. François E. Cellier Internal Seminar: Groups Arbenz/Cellier/Gander/Hinterberger April 3, 2007 More Bad News … Every species outgrows its resources over time. A population of lab rats will stop reproducing only when there is no longer enough food for all of them. Populations are naturally controlled by hunger and disease, not by living standard. Whereas humans individually (on a local scale) are capable of behaving in a civilized way and helping each other, there has been no sign so far that humanity, as a species (on a global scale), behaves any differently from lab rats.

14
Start Presentation © Prof. Dr. François E. Cellier Internal Seminar: Groups Arbenz/Cellier/Gander/Hinterberger April 3, 2007 Footprint vs. Biocapacity

15
Start Presentation © Prof. Dr. François E. Cellier Internal Seminar: Groups Arbenz/Cellier/Gander/Hinterberger April 3, 2007 Global Ecological Balance Sheet (in global hectares/person, 2003 data)

16
Start Presentation © Prof. Dr. François E. Cellier Internal Seminar: Groups Arbenz/Cellier/Gander/Hinterberger April 3, 2007

17
Start Presentation © Prof. Dr. François E. Cellier Internal Seminar: Groups Arbenz/Cellier/Gander/Hinterberger April 3, 2007

18
Start Presentation © Prof. Dr. François E. Cellier Internal Seminar: Groups Arbenz/Cellier/Gander/Hinterberger April 3, 2007 Turning the Tide Christian Azar Christian Azar

19
Start Presentation © Prof. Dr. François E. Cellier Internal Seminar: Groups Arbenz/Cellier/Gander/Hinterberger April 3, 2007

20
Start Presentation © Prof. Dr. François E. Cellier Internal Seminar: Groups Arbenz/Cellier/Gander/Hinterberger April 3, 2007 CO 2 Emissions Europe (with Kyoto) and U.S. (without Kyoto)

21
Start Presentation © Prof. Dr. François E. Cellier Internal Seminar: Groups Arbenz/Cellier/Gander/Hinterberger April 3, 2007 Words and Deeds Although the EU signed the Kyoto agreement whereas the U.S. did not, their increase in CO 2 emissions over time is approximately the same. Switzerland signed the Kyoto agreement. What has Switzerland done since then to actually curb CO 2 emissions? Absolutely nothing. We talk a lot … but the CO 2 emissions won’t go away by talk alone. As I shall demonstrate, relying on market forces won’t make them go away either.

22
Start Presentation © Prof. Dr. François E. Cellier Internal Seminar: Groups Arbenz/Cellier/Gander/Hinterberger April 3, 2007 CO 2 Concentration and Temperature

23
Start Presentation © Prof. Dr. François E. Cellier Internal Seminar: Groups Arbenz/Cellier/Gander/Hinterberger April 3, 2007 Ice Ages and Temperature

24
Start Presentation © Prof. Dr. François E. Cellier Internal Seminar: Groups Arbenz/Cellier/Gander/Hinterberger April 3, 2007 Ice Ages and Temperature II

25
Start Presentation © Prof. Dr. François E. Cellier Internal Seminar: Groups Arbenz/Cellier/Gander/Hinterberger April 3, 2007 Mechanisms for Temperature Changes The climate seems to exhibit something like a bi-stable behavior with long ice ages (around 100.000 years) interrupted by short interglacial periods (around 10.000 years). This behavior can only be explained by positive feedback loops and nonlinearities. We understand some of the positive feedback loops. We have no clear understanding of what brings the next ice age about (although we have some ideas about it). We have no understanding whatsoever as to what mechanisms end an ice age.

26
Start Presentation © Prof. Dr. François E. Cellier Internal Seminar: Groups Arbenz/Cellier/Gander/Hinterberger April 3, 2007 Global Warming A predicted global warming of 3-5 degrees Centigrade within the next 100 years is colossal. The difference between current global annual temperature averages and ice ages averages is only 4 o C. If the average temperature rises by another 4 o C above current values, the arctic icecap will melt. The melting of the icecap will make the oceans less salty. This could derail the golf stream and bring the next ice age about. Since we don’t really understand yet what we are doing … it might be a good idea not to do it.

27
Start Presentation © Prof. Dr. François E. Cellier Internal Seminar: Groups Arbenz/Cellier/Gander/Hinterberger April 3, 2007

28
Start Presentation © Prof. Dr. François E. Cellier Internal Seminar: Groups Arbenz/Cellier/Gander/Hinterberger April 3, 2007 Available Options Using less energy (e.g. by thermally insulating the houses better) is by far the cheapest, i.e., the most cost- effective option. Using other forms of energy is something that we should do, but it won’t solve the problem in the short run. Local decentralized solutions are more easily realizable than global centralized solutions, although the latter may be more cost-effective. Carbon capture is a good technology for the future for global CO 2 management.

29
Start Presentation © Prof. Dr. François E. Cellier Internal Seminar: Groups Arbenz/Cellier/Gander/Hinterberger April 3, 2007 Can the Problem be Solved?

30
Start Presentation © Prof. Dr. François E. Cellier Internal Seminar: Groups Arbenz/Cellier/Gander/Hinterberger April 3, 2007

31
Start Presentation © Prof. Dr. François E. Cellier Internal Seminar: Groups Arbenz/Cellier/Gander/Hinterberger April 3, 2007

32
Start Presentation © Prof. Dr. François E. Cellier Internal Seminar: Groups Arbenz/Cellier/Gander/Hinterberger April 3, 2007

33
Start Presentation © Prof. Dr. François E. Cellier Internal Seminar: Groups Arbenz/Cellier/Gander/Hinterberger April 3, 2007 Limits to Growth Dennis Meadows

34
Start Presentation © Prof. Dr. François E. Cellier Internal Seminar: Groups Arbenz/Cellier/Gander/Hinterberger April 3, 2007 Overview of his Comments

35
Start Presentation © Prof. Dr. François E. Cellier Internal Seminar: Groups Arbenz/Cellier/Gander/Hinterberger April 3, 2007 Main Contributions

36
Start Presentation © Prof. Dr. François E. Cellier Internal Seminar: Groups Arbenz/Cellier/Gander/Hinterberger April 3, 2007 Three Types of Policies

37
Start Presentation © Prof. Dr. François E. Cellier Internal Seminar: Groups Arbenz/Cellier/Gander/Hinterberger April 3, 2007 Energy Gap

38
Start Presentation © Prof. Dr. François E. Cellier Internal Seminar: Groups Arbenz/Cellier/Gander/Hinterberger April 3, 2007 “Easy” Problems

39
Start Presentation © Prof. Dr. François E. Cellier Internal Seminar: Groups Arbenz/Cellier/Gander/Hinterberger April 3, 2007 “Difficult” Problems

40
Start Presentation © Prof. Dr. François E. Cellier Internal Seminar: Groups Arbenz/Cellier/Gander/Hinterberger April 3, 2007 “Difficult” Problems Become “Easy” with Greater Time Horizon

41
Start Presentation © Prof. Dr. François E. Cellier Internal Seminar: Groups Arbenz/Cellier/Gander/Hinterberger April 3, 2007 Why are Many Problems “Difficult”? Let me concretize the nature of “difficult” problems by means of a simple optimization study using Forrester’s world model.Forrester’s world model I chose that model over Meadows’ newer world model, because Forrester published his full model in his book World Dynamics, whereas Meadows published only the results of his studies in his book Limits to Growth. World DynamicsLimits to Growth The exercise serves to demonstrate why market forces alone are likely to drive us down the path of overshoot and collapse, rather than down the path of a sustainable future.

42
Start Presentation © Prof. Dr. François E. Cellier Internal Seminar: Groups Arbenz/Cellier/Gander/Hinterberger April 3, 2007 World Model

43
Start Presentation © Prof. Dr. François E. Cellier Internal Seminar: Groups Arbenz/Cellier/Gander/Hinterberger April 3, 2007 Simulation Results I

44
Start Presentation © Prof. Dr. François E. Cellier Internal Seminar: Groups Arbenz/Cellier/Gander/Hinterberger April 3, 2007 Simulation Results II The model shows nicely the limits to growth. The population peaks at about the year 2020 with a little over 5 billion people. It turns out that, as the natural resources shrink to a level below approximately 5·10 11, this generates a strong damping effect on the population.

45
Start Presentation © Prof. Dr. François E. Cellier Internal Seminar: Groups Arbenz/Cellier/Gander/Hinterberger April 3, 2007 1 st Modification Forrester thus proposed to reduce the usage of the natural resources by a factor of 4, starting with the year 1970.Forrester This may be just as well. The effect of this modification is approximately the same as saying that more resources are available than anticipated. This is indeed true. Now, the resource exhaustion won’t be effective as a damping factor any longer.

46
Start Presentation © Prof. Dr. François E. Cellier Internal Seminar: Groups Arbenz/Cellier/Gander/Hinterberger April 3, 2007 Program Modification I As we are now modifying a parameter, NRUN, this former parameter had now to become a variable. (I had to extend a few of the function domains to prevent the assert clauses in the Piecewise function from killing the simulation.) I could have modified the multiplier instead, but the nonlinear function was optically more appealing to me.

47
Start Presentation © Prof. Dr. François E. Cellier Internal Seminar: Groups Arbenz/Cellier/Gander/Hinterberger April 3, 2007 Simulation Results III Collapse

48
Start Presentation © Prof. Dr. François E. Cellier Internal Seminar: Groups Arbenz/Cellier/Gander/Hinterberger April 3, 2007 Optimization We now want to optimize the consumption of natural resources after the year 1970. To this end, we shall need a performance index. What is good, is a high value of the minimal quality of life after the year 2000 (optimizing the past doesn’t make much sense). What is bad, is a die-off of the population. die-off of the population Accordingly, we modify the program once more. This is all done in the equation window.

49
Start Presentation © Prof. Dr. François E. Cellier Internal Seminar: Groups Arbenz/Cellier/Gander/Hinterberger April 3, 2007 Program Modification II

50
Start Presentation © Prof. Dr. François E. Cellier Internal Seminar: Groups Arbenz/Cellier/Gander/Hinterberger April 3, 2007 Simulation Results IV The first two simulations are plagued by massive die-off. The others are fine. Yet, in the short run, those solutions that will give us bad performance (die-off) exhibit the best performance. NRUN2 = 0.25NRUN2 = 0.5NRUN2 = 0.75NRUN2 = 1.0NRUN2 = 1.5

51
Start Presentation © Prof. Dr. François E. Cellier Internal Seminar: Groups Arbenz/Cellier/Gander/Hinterberger April 3, 2007 Discussion The example shows what Dennis Meadows calls a “difficult” problem. Markets forces focus on short-term optimization. Industrial decision makers hardly ever look beyond 2 years. Consequently, they will most likely favor a solution that will lead to a massive die-off further down the road (après moi le déluge!). Easter Islands all over again... According to Dennis Meadows, most problems related to sustainability issues are “difficult” problems.

52
Start Presentation © Prof. Dr. François E. Cellier Internal Seminar: Groups Arbenz/Cellier/Gander/Hinterberger April 3, 2007 The Spanish Pathway On Wednesday afternoon, after the international AGS meeting had ended, a separate Spanish AGS meeting was held (in Spanish). I participated in that meeting also, as I was interested in hearing the Spanish viewpoint.

53
Start Presentation © Prof. Dr. François E. Cellier Internal Seminar: Groups Arbenz/Cellier/Gander/Hinterberger April 3, 2007 The Facts Between 1990 and 2004, the Spanish CO 2 emissions increased by 46%. 35% of all Spanish CO 2 emissions are attributed to the building industry. In the same time frame, the construction of new primary homes grew by 30%. The construction of new secondary homes grew by 52%. For this reason, the building industry is viewed as the single most important culprit in causing the additional CO 2 emissions. Assuming a life span of 50 years for a building, the CO 2 emissions produced in constructing that building contribute roughly 50% to the overall CO 2 emissions generated over the entire life span of the building.

54
Start Presentation © Prof. Dr. François E. Cellier Internal Seminar: Groups Arbenz/Cellier/Gander/Hinterberger April 3, 2007 The Proposed Solution The Spanish AGS researchers invited CEOs of Spanish companies related to the building industry to a meeting to discuss, how the CO 2 emissions caused by the building industry may be curbed. If these emissions could be significantly reduced, the overall emissions would decrease as well. At least, that was the theory.

55
Start Presentation © Prof. Dr. François E. Cellier Internal Seminar: Groups Arbenz/Cellier/Gander/Hinterberger April 3, 2007 Problems The problem with this approach is that the different sectors of the industry are strongly interlinked. The building industry doesn’t necessarily require much fossil fuels … they require a lot of energy. If electricity becomes cheaper, they’ll switch over to using electricity, thereby making the building industry look much “cleaner” … while leaving it up to the power companies to decide how they are going to produce the additional electricity that is now being required. The power companies will most likely meet the requirements … by burning more fossil fuels.

56
Start Presentation © Prof. Dr. François E. Cellier Internal Seminar: Groups Arbenz/Cellier/Gander/Hinterberger April 3, 2007 Analyzing the Observations In the time span between 1990 and 2004, the Spanish stock market grew by roughly 46%. Hence the average person had 46% more money to spend, or rather reinvest. The people need to reinvest their money somehow. Either they invest it themselves (e.g. by constructing a weekend home), or they give it to a bank to invest it for them (e.g. by lending money to a home builder). The investment consumes roughly 46% additional energy. The production of that additional energy is accompanied by roughly 46% additional CO 2 emissions.

57
Start Presentation © Prof. Dr. François E. Cellier Internal Seminar: Groups Arbenz/Cellier/Gander/Hinterberger April 3, 2007 Conclusions If we want to reduce the CO 2 emissions, we have no choice but to use less energy, at least in the short run. The only meaningful way to accomplish this is by adding a massive CO 2 removal tax on the use of fossils fuels. This tax will slow down the economy. It will make us all poorer in the short run (a “difficult problem” according to Dennis Meadows), but it will accomplish the goal of reducing CO 2 emissions. The tax will make alternate energy sources (like solar power plants) more attractive, thereby increasing the rate of their introduction. The tax will also make us more conscious of the indirect cost of burning fossil fuels. Hence each of us is more likely to help our common goal by using less energy.

Similar presentations

OK

Who am I? Why am I here? What will I talk about? - The science of Climate Change - The Carbon Pollution Reduction Scheme (CPRS) - The Solution Green Loans.

Who am I? Why am I here? What will I talk about? - The science of Climate Change - The Carbon Pollution Reduction Scheme (CPRS) - The Solution Green Loans.

© 2018 SlidePlayer.com Inc.

All rights reserved.

To ensure the functioning of the site, we use **cookies**. We share information about your activities on the site with our partners and Google partners: social networks and companies engaged in advertising and web analytics. For more information, see the Privacy Policy and Google Privacy & Terms.
Your consent to our cookies if you continue to use this website.

Ads by Google

Ppt on question tags games Ppt on 5 star chocolate chip Ppt on statistics and probability problems A ppt on loch ness monster evidence Ppt on international financial markets Ppt on self development of people Mobile application development seminar ppt on 4g Ppt on endoplasmic reticulum Ppt on dressing etiquettes meaning Ppt on turbo c compiler