[geo] Is there more to be learned about sunshade-geoengineering by studying volcanoes in the historical past?

2012-01-24 Thread Ken Caldeira
Alan Robock is probably in the best position to answer this question, but I send this out more broadly to see if there are other viewpoints. -- It has been suggested that it would be useful to test climate models with data that reflects influences of weather (e.g., planting and harvest dates,

Re: [geo] Is there more to be learned about sunshade-geoengineering by studying volcanoes in the historical past?

2012-01-24 Thread Alan Robock
Dear Ken, I'm not sure I understand the question. It seems very broad. But certainly studying past volcanic eruptions teaches us about the climate response stratospheric aerosols. If models simulate them correctly, it gives us more confidence in the simulations of permanent layers we wish

Re: [geo] Is there more to be learned about sunshade-geoengineering by studying volcanoes in the historical past?

2012-01-24 Thread Ken Caldeira
Sorry about not being specific enough. I wasn't asking about utility of doing simulations, I was asking about utility of assembling heterogeneous and necessarily largely local data sets. My question is: Is there much utility in assembling heterogeneous data sets spanning volcanic years of things

Re: [geo] Crop yields in a geoengineered climate (notes from the blogosphere ...)

2012-01-24 Thread rongretlarson
Ken and list: 1. I have enjoyed the Pongratz article sent recently which is the subject of this NPR interview given below. In it, Dr. Pongratz, you and your co-authors did a pretty good job of separating SRM from Geoengineering. (I don't think the phrase CDR appeared, however) This is to

[geo] geoengineering game

2012-01-24 Thread Andrew Lockley
Here's the link to the modified geoengineering game https://www.surveymonkey.com/s/LD7LGR8 You're free to play it, and to distribute it more generally. Please keep in touch about the uses it is put to, and any comments you receive. Thanks to everyone who helped with the development program.

[geo] Re: Crop yields in a geoengineered climate (notes from the blogosphere ...)

2012-01-24 Thread Josh Horton
I am traveling and have not had a chance to read the Pongratz article closely yet, but it looks like the comparison is between a control scenario, a 2xCO2 world, and a 2xCO2 + stratospheric aerosols world. This is common practice, and the analytical logic is clear, however presenting model runs

Re: [geo] Re: Crop yields in a geoengineered climate (notes from the blogosphere ...)

2012-01-24 Thread Gregory Benford
Josh: After all, almost no one is arguing for intervention without emissions cuts. No, but I and others have been *predicting* it for years...because emissions cuts may well take decades. Even the panic I expect in the 2020s won't change matters swiftly. Gregory Benford On Tue, Jan 24, 2012 at

Re: [geo] Re: Crop yields in a geoengineered climate (notes from the blogosphere ...)

2012-01-24 Thread Joshua Horton
That may be, but few of us want it (okay, maybe Newt Gingrich). On 1/24/12, Gregory Benford xbenf...@gmail.com wrote: Josh: After all, almost no one is arguing for intervention without emissions cuts. No, but I and others have been *predicting* it for years...because emissions cuts may