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Volume 8, Issue 9 (Suppl) J Earth Sci Clim Change
ISSN: 2157-7617 JESCC, an open access journal Climate Congress 2017
October 16-17, 2017
Page 29
conferenceseries.com
October 16-17, 2017 Dubai, UAE
3rd World Congress on
Climate Change and Global Warming
Hans J Mueller
Karlsruhe Institute of Technology, Germany
Hans J Mueller, J Earth Sci Clim Change 2017, 8:9 (Suppl)
DOI: 10.4172/2157-7617-C1-032
Negative greenhouse gas emissions: Options to make that real
Among many other information in my understanding the most important result of the United Nations framework
convention on climate change is that limiting further greenhouse gas emissions is simply insufficient to make the survival
of mankind possible. In near future, i.e., starting at about 2050, we need negative emissions and the time frame for developing
the corresponding technologies is closing rapidly. Unfortunately since fall 2016, the melting process of both polar ice caps
accelerated dramatically. If this continues, the nightmare of an ice-free arctic ocean anticipated for about 2050 could become
real already during the next 3 years, i.e., 30 years earlier, which means, it could be the beginning of a dominating positive
feedback process. Published models show planet earth will reach something between +5 and +7 degrees above the global mean
temperature of the preindustrial era, i.e., about 1750, latest 1815 at the next turn of the century. Similar conditions already
existed in geological history. There were 5 mass extinction events. Last time it happened at the Permian-Triassic-extinction
event, 252 Mio years ago, as a result 98.5% of all species became extinct. Unfortunately all our recent technological tools, as e.g.,
replacing elder combustion techniques by higher developed new ones, extended use of renewable energies etc., are completely
insufficient to reach that goal. The 6th mass extinction event is nothing which we can prevent to start. It is already running.
Following recent studies the loss of species per time is already about factor 2 or higher than at the Permian-Triassic-extinction-
event. During the last 200 years we have simply used our atmosphere as a waste disposal site. We simply need removing and save
underground storage of greenhouse gasses. Therefore it is time to switch the anti-global warming strategy from technologies
for limiting further continued positive emissions to techniques for real negative emissions. We have to realize man made
global warming is so fast that it is much outside any equilibrium. That means we have only a chance for a further sustainable
development if we restore our atmosphere as fast as possible back to its stage of 1815, best much earlier than 2050, if possible.
It is time to concentrate on our resources to face this challenge. The fastest and cheapest way for reaching negative emissions is
massive reforestration. Unfortunately this is not enough because only about the half of the amount of atmospheric greenhouse
gases are the result of deforestration and human land use. Technological sequestration means washing out greenhouse gases,
chemical reduction to long-term stable compounds and elements and its reliable storage. But there is a powerful opponent, the
entropy. Any concentration process is accompanied by reducing the entropy, i.e., it is energy consuming. That means first of all
it requires a lot of energy in addition to that part which our society is consuming right now and in future.
Biography
Hans J Mueller has completed his PhD in Geophysics at the Academy of Sciences, Berlin, Germany in 1988. During the last 30 years, he published multiple papers
in reputed journals about high pressure geophysics, mineral physics and the deep interior of terrestrial planets.
,