He
supports that, but thinks the US and
global politics will probably make that impossible - but that a worse deal than that would still be important, though it involves more mitigation of some catastrophic effects than a
sufficient deal.
However, to
support the assertion that
global warming is responsible for a great deal of damage from such events, it is
sufficient to show that such events have the «signature» of
global warming — for example, that specific
global warming - related factors such as abnormally high sea surface temperatures, elevated water vapor levels, and altered jet stream patterns contributed to making Hurricane Sandy what it was — even if those factors can not be precisely quantified.