tag:blogger.com,1999:blog-2313427464944392482.post4886182342282724498..comments2024-03-25T05:30:23.847+11:00Comments on HotWhopper: "It's not the sun". Another look at what would happen if there were a Maunder Minimum this century.Souhttp://www.blogger.com/profile/08818999735123752034noreply@blogger.comBlogger7125tag:blogger.com,1999:blog-2313427464944392482.post-47209656319970665282014-10-19T07:04:16.881+11:002014-10-19T07:04:16.881+11:00Anthony David
The key point missing from this arg...Anthony David<br /><br /><i>The key point missing from this argument is the detailed inferences we have made about past climates. In particular, ocean cores and stable isotope work since the 1950s have given us a detailed picture of the climate context (Icehouse) we currently live in and the natural bounds to that climate. Once the temperature/pCO2 oscillations over the last 2 million years are understood, what we humans are doing to change those oscillations jumps out at anyone who looks.</i><br /><br />Yes. Paleoclimate behaviour is pretty much inexplicable if CO2 and CH4 are not efficacious forcings. And it's interesting to watch the way contrarians react to paleoclimate evidence. You will notice that denial is the preferred tactic. BBDhttps://www.blogger.com/profile/10687930416706386215noreply@blogger.comtag:blogger.com,1999:blog-2313427464944392482.post-78057139671452515492014-10-19T04:08:26.851+11:002014-10-19T04:08:26.851+11:00Another missing point, I think, is that in pre-ind...Another missing point, I think, is that in pre-industrial times people were far less insulated from weather and, by extension, climate. If climate was always changing, as some like to claim, it would have been noticed and remarked on. Plenty of people lived to 60 or more; at 60 myself, I don't need telling that climate has changed in my lifetime.Cugelnoreply@blogger.comtag:blogger.com,1999:blog-2313427464944392482.post-50702153919050932302014-10-19T02:36:14.669+11:002014-10-19T02:36:14.669+11:00Thanks. Yes I just skimmed Mike Lockwood's art...Thanks. Yes I just skimmed Mike Lockwood's article because I knew he had proposed actually mechanisms for how a small change in solar activity might affect climates by modifying the jetstream.<br /><br />Yes I would be nice to get rid of the term Little Ice Age out of the dialogue, it's too inaccurate a description.Anonymoushttps://www.blogger.com/profile/11552461190113661645noreply@blogger.comtag:blogger.com,1999:blog-2313427464944392482.post-26906084072406292712014-10-19T02:28:26.096+11:002014-10-19T02:28:26.096+11:00The articles at Climate Dialogue cover this, parti...The articles at Climate Dialogue cover this, particularly Mike Lockwood's article. <br /><br />The Maunder Minimum didn't have much effect on climate. It didn't cause the Little Ice Age (which wasn't really an ice age, so much as some quite cold winters in parts of the Northern Hemisphere as I understand it).<br /><br />If the sun went very quiet for a few years, I think at worst it might mean a few cold winters up north. It won't stop global warming.Souhttps://www.blogger.com/profile/08818999735123752034noreply@blogger.comtag:blogger.com,1999:blog-2313427464944392482.post-20499818195638418782014-10-19T02:16:12.770+11:002014-10-19T02:16:12.770+11:00The Maunder Minimum affecting global climate (or e...The Maunder Minimum affecting global climate (or even local climate) is just hypothetical isn't it? Maybe someone has read a lot more about the subject than me. I believe sunspot numbers are a poor proxy for the level of solar irradiance that can affect the earth's climate.Anonymoushttps://www.blogger.com/profile/11552461190113661645noreply@blogger.comtag:blogger.com,1999:blog-2313427464944392482.post-15241651052171799162014-10-18T21:40:03.283+11:002014-10-18T21:40:03.283+11:00If we could not see asteroids and infer their futu...If we could not see asteroids and infer their future trajectories would we be concerned? No, we would not be concerned but that would not stop an asteroid crashing into the earth. Perhaps panic is a necessary condition to do something about it. <br /><br />We can also reflect that our ability to measure and understand, our technology, is what got us to this position. If we had not developed technology we would not have put CO2 into the atmosphere and we would be OK. Other than those pesky asteroids. <br />Jammy Dodgerhttps://www.blogger.com/profile/08360437479098314946noreply@blogger.comtag:blogger.com,1999:blog-2313427464944392482.post-60207999721248016652014-10-18T18:01:37.116+11:002014-10-18T18:01:37.116+11:00Kenneth Wikerøy makes an interesting point that oc...Kenneth Wikerøy makes an interesting point that occurred to me some time ago. We are only just recently measuring climate. Is this concern just because of measuring things and going into a panic? For example, if we could not see asteroids and infer their future trajectories, would be even be concerned about them?<br /><br />The key point missing from this argument is the detailed inferences we have made about past climates. In particular, ocean cores and stable isotope work since the 1950s have given us a detailed picture of the climate context (Icehouse) we currently live in and the natural bounds to that climate. Once the temperature/pCO2 oscillations over the last 2 million years are understood, what we humans are doing to change those oscillations jumps out at anyone who looks. It would have been reckless not to bring this issue to the attention of the global population.Anthony Davidhttps://www.blogger.com/profile/02513872551156179165noreply@blogger.com