Wednesday, 7 October 2015

More Doubts re AGW Science as COP21 approaches

Australia's PM Malcolm Turnbull and Foreign Minister Julie Bishop are keen to sign onto the UN's Green Climate Fund. Even under PM Abbott, Bishop announced she would waste $200M on the fund. (link)
The Federal Government has announced it will contribute $200 million to an international fund designed to help developing nations tackle climate change. 
Foreign Minister Julie Bishop announced the funding at the United Nations Climate Change Conference in Lima, Peru.
As COP21 approaches, more evidence not to sign is being exposed.

Reported in the Journal: Environmental Science and Technology

Unravelling New Processes at Interfaces: Photochemical Isoprene Production at the Sea Surface

Environ. Sci. Technol., Article ASAP
DOI: 10.1021/acs.est.5b02388
Publication Date (Web): September 10, 2015
Copyright © 2015 American Chemical Society


Isoprene is an important reactive gas that is produced mainly in terrestrial ecosystems but is also produced in marine ecosystems. In the marine environment, isoprene is produced in the seawater by various biological processes. Here, we show that photosensitized reactions involving the sea-surface microlayer lead to the production of significant amounts of isoprene. It is suggested that H-abstraction processes are initiated by photochemically excited dissolved organic matter which will the degrade fatty acids acting as surfactants. This chemical interfacial processing may represent a significant abiotic source of isoprene in the marine boundary layer.

Read the paper HERE.

The Leibniz Institute for Tropospheric Research issued an announcement: (LINK)
Atmospheric chemists from France and Germany, however, can now show that isoprene can also be formed without biological sources in the surface film of the oceans by sunlight and so explain the large discrepancy between field measurements and models. The new identified photochemical reaction is therefore important to improve the climate models.
Global models at the moment assume total emissions of isoprene from all sources - trees, plants, plankton, the lot - of around 1.9 megatons per year. But, according to the new research, the newly discovered "abiotic" process releases as much as 3.5 megatons on its own - which "could explain the recent disagreements" between models and reality. 
"We were able for the first time to trace back the production of this important aerosol precursor to abiotic sources. So far global calculations consider only biological sources," explains Dr Christian George from French lab the Institute of Catalysis and Environment, in Lyon. 
VOCs such as isoprene are known to be a powerful factor in the climate, as they cause the formation of aerosol particles. Some kinds of aerosol, for instance black soot, warm the world up: but the ones resulting from VOCs actually cool it down substantially by acting as nuclei for the formation of clouds. It has previously been suggested that production of VOCs by pine forests could be a negative feedback so powerful that it "limits climate change from reaching such levels that it could become really a problem in the world."
Science again shows that the GCMs have made wrong assumptions; the science is NOT SETTLED. 

PM Turnbull and FM Bishop should not sign anything at COP21, Paris.

1 comment:

  1. Engineering science demonstrates CO2 has no significant effect on climate. Identification of the two factors that do cause reported average global temperature change (sunspot number is the only independent variable) are at (now with 5-year running-average smoothing of measured average global temperature (AGT), the near-perfect explanation of AGT since before 1900; R^2 = 0.97+). Any effect from isoprene must find room in the unexplained 3%.


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