We are looking in to adding other parameters - the original idea was to make a global change index, so we feel the climate change index is a start. Several institutions have asked if we could work with them to develop an oceans index and an extremes index. These are interesting ideas, which we hope to develop further.
Owen On 26/05/2010 15:21, "Bart Verheggen" <[email protected]> wrote: > > The IGBP climate change index is very useful indeed, and even though > it is obvious that CO2 is a greenhouse gas and thus very relevant for > climate, it is different than the other paremeters in that it's a > forcing (cause) rather than a phenomenological effect, as the other > parameters (Arctic sea ice, SLR, temp) are. Ocean heat content would > be a good one to include (though it doesn't go as far back in time). > > Steve, a rising index means it's moving further away from the > preindustrial climate. > > Bart > > > On 25 mei, 00:38, Steve Reynolds <[email protected]> wrote: >> Does CO2 belong in that index? I don't see how it is a proxy for >> climate change. >> >> Also, the web site states that a rising index indicates a change away >> from 'stable climate'. What evidence is there that a warmer climate is >> less stable? Historically colder is less stable (ice ages). >> >> On May 23, 1:56 pm, Owen Gaffney <[email protected]> wrote: >> >> >> >> >> >>> In December 2009 we released something close to what you describe - a >>> climate change index that relentlessly increases. >> >>> http://www.igbp.net/page.php?pid=504 >> >>> The index brings together sea level rise, Arctic sea ice, temperature >>> and CO2. >> >>> Going back to 1980 the index only falls in three years - the biggest >>> dip could be related to the Pinatubo eruption in 1991. We plan to >>> release the most up-to-date index shortly. >> >>> Owen >> >>> On May 13, 3:43 pm, Tom Adams <[email protected]> wrote: >> >>>> I guess the AGW hypothesis implies that the energy of Earth system is >>>> relentlessly increasing. >> >>>> It might be nice to have a measurable proxy parameter for that energy >>>> that is relentlessly increasing year after year. >> >>>> Such a parameter could become like the Dow Jones Industrial Average of >>>> AGW, it might be more convincing to the general public to focus >>>> attention on a relentlessly increasing parameter. >> >>>> The thermal expansion of the oceans might be a suitable parameter of >>>> this sort. >> >>>> I have the impression that denying or explaining away of the thermal >>>> expansion of the oceans is difficult, but I am not sure about this. I >>>> don't want to underestimate the creativity or PR prowess of the >>>> deniers. >> >>>> The general characteristics of this parameter: >> >>>> 1. Captures a good bit of the Earth's AGW-induced energy increase >>>> relatively quickly >> >>>> 2. Easy to explain to the public and hard to deny or explain away. >> >>>> 3. Increases relentlessly year over year (assuming a big volcano or >>>> something does not cause a temporary halt to warming, if that is >>>> possible.) >> >>>> Of course, there are a lot of ocean-related parameters of interest >>>> (runoff, ice extent, sea-level rise). To paraphrase James Carville: >> >>>> "It's the oceans, stupid" >> >>>> Coined from Carville's "It's the economy, stupid": >> >>>> http://en.wikipedia.org/wiki/It's_the_economy,_stupid >> >>>> -- >>>> You received this message because you are subscribed to the Google Groups >>>> Global Change ("globalchange") newsgroup. Global Change is a public, >>>> moderated venue for discussion of science, technology, economics and policy >>>> dimensions of global environmental change. >> >>>> Posts will be admitted to the list if and only if any moderator finds the >>>> submission to be constructive and/or interesting, on topic, and not >>>> gratuitously rude. >> >>>> To post to this group, send email to [email protected] >> >>>> To unsubscribe from this group, send email to >>>> [email protected] >> >>>> For more options, visit this group >>>> athttp://groups.google.com/group/globalchange >> >>> -- >>> You received this message because you are subscribed to the Google Groups >>> Global Change ("globalchange") newsgroup. Global Change is a public, >>> moderated venue for discussion of science, technology, economics and policy >>> dimensions of global environmental change. >> >>> Posts will be admitted to the list if and only if any moderator finds the >>> submission to be constructive and/or interesting, on topic, and not >>> gratuitously rude. >> >>> To post to this group, send email to [email protected] >> >>> To unsubscribe from this group, send email to >>> [email protected] >> >>> For more options, visit this group >>> athttp://groups.google.com/group/globalchange-Hide quoted text - >> >>> - Show quoted text - >> >> -- >> You received this message because you are subscribed to the Google Groups >> Global Change ("globalchange") newsgroup. Global Change is a public, >> moderated venue for discussion of science, technology, economics and policy >> dimensions of global environmental change. >> >> Posts will be admitted to the list if and only if any moderator finds the >> submission to be constructive and/or interesting, on topic, and not >> gratuitously rude. >> >> To post to this group, send email to [email protected] >> >> To unsubscribe from this group, send email to >> [email protected] >> >> For more options, visit this group >> athttp://groups.google.com/group/globalchange- Tekst uit oorspronkelijk >> bericht niet weergeven - >> >> - Tekst uit oorspronkelijk bericht weergeven - -- You received this message because you are subscribed to the Google Groups Global Change ("globalchange") newsgroup. Global Change is a public, moderated venue for discussion of science, technology, economics and policy dimensions of global environmental change. Posts will be admitted to the list if and only if any moderator finds the submission to be constructive and/or interesting, on topic, and not gratuitously rude. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/globalchange
