Category Archives: chemistry
On 4 September 2017, I added a blog post here titled “On the responsibilities of engineers”. Scientists have responsibilities, too. And I am delighted to say that the National Academies have just demonstrated a proud example of how such responsibilities … Continue reading
Response to a paper by Hermann Harde, from Ken Rice at … And Then There’s Physics. Dr Rice cites two other responses as well: One by Gavin Schmidt at RealClimate. One from 2011 by Gavin Cawley from the University of … Continue reading
(Major update of this piece included below.) You can’t. It’ll cost much more than 23 times 40 times the Gross World Product to do it. And, in any case, you need to go to where you need to be to … Continue reading
From time to time, I engage with science deniers on the Web, typically in Comment sections, and primarily regarding aspects of climate science or physics. Some think this to be a waste of time, but, as I enjoy debating (have … Continue reading
Originally posted on Open Mind:
The four greenhouse gases with the strongest effect on climate through their climate forcing are water vapor (H2O), carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O) (I’m omitting halocarbons, which come in a wide…
From this post: There is a cute little number called Loschmidt, the number of molecules in a cubic meter of air at 1 atm and 0° C, 2.6867774(47) x 1025 molecules/m3 … Eli Rabett provides a neat way to see … Continue reading
There’s agitation and angst in some circles regarding the proper term to dub individuals who, however technical their training, reject the conclusions of climate science, physics, and even Exxon from the 1970s. (Graphs are from Greg Laden’s blog.) There’s denial, … Continue reading
Hat tip to Jeff Galkowski, my son, post-doc in Mathematics at McGill University and at Stanford University, a University of Rochester grad, who recently received a doctorate in Mathematics from University of California, Berkeley.
Abstract Recent estimates of the global carbon budget, or allowable cumulative CO2 emissions consistent with a given level of climate warming, have the potential to inform climate mitigation policy discussions aimed at maintaining global temperatures below 2° C. This raises … Continue reading
(Hat tip to the Yale Climate Connections project.)
One of the “climate zombies” that get’s trotted out from time to time and at places on the Internet is the argument of Knut Ångström, trying to rebut the calculations of Svante Arrhenius regarding the impact a doubling of carbon … Continue reading
(Click on image for a larger one.) See the write-up for details.
This is from Rabett Run. The American Physical Society (“APS”) is working on a draft statement on climate change. Compared to other scientific organizations (and my own primary society, the American Statistical Association), it’s sure taking them a long time. … Continue reading
We are trying. And the bitterest result is to have so-called colleagues align themselves with the Koch brothers
I attended a 350.org meeting tonight. One group A group presenting there called “Fighting Against Natural Gas” applauded themselves for assailing Senator Whitehouse of Rhode Island for his supportive position on natural gas pipelines. Now, I am no friend of … Continue reading
Originally posted on …and Then There's Physics:
I thought I might write about the new paper by Jochem Marotzke and Piers Forster called Forcing, feedback and internal variability in global temperature trends. It’s already been discussed in a Carbon…
With today’s post, I’m beginning a new tradition at 667 per cm, posting a potpourri of short observations collected during the week, not necessarily having dense citations to work which inspired them. (Although if interested, please do ask and I’ll … Continue reading
These basic facts do not appear to be widely known, so it’s a good thing this classic paper is now available in a new, easily accessible form. David Archer, Michael Eby, Victor Brovkin, Andy Ridgwell, Long Cao, Uwe Mikolajewicz, Ken … Continue reading
From Phil Plait’s Bad Astronomy blog.
Professor Pierrehumbert offers his thoughts in Slate. He’s the author of Principles of Planetary Climate which is, as far as I’m concerned, the definitive climate book.
G. B. Rieker, F. R. Giorgetta, W. C. Swann, J. Kofler, A. M. Zolot, L. C. Sinclair, E. Baumann, C. Cromer, G. Petron, C. Sweeney, P. P. Tans, I. Coddington, And N. R. Newbury, “Frequency-comb-based remote sensing of greenhouse gases … Continue reading
It is popular to gage progress towards greenhouse gas emissions reductions by how much they have been reduced since 1990. This is done by the federal government, and it is done by the Commonwealth of Massachusetts. It is the wrong … Continue reading
I never liked the idea of using natural gas as a “bridge energy fuel”. It seems to me unrealistic to invest substantially in additional CO2 producing infrastructure which will simply need to be stopped and teared down a lot sooner … Continue reading
Sure, correlation is not causation, but it is causation if there’s independent physical evidence that there is a link. And we have plenty of that. Much of the doubt and discussion these days is about attribution of surface warming to … Continue reading
From the great XKCD … (Click image to enlarge.)
Professor Ray Pierrehumbert’s “Open Letter to Steve Levitt” has to be my favorite post on RealClimate. Not only does it do “Consider a spherical cow” kinds of quick calculation, in a Socratic manner it exposes the manipulation which climate deniers or, if … Continue reading
An aspect of paleoclimate evidence to which Professor Jennifer Francis alludes in her recent report on Arctic amplification is the close mutual modeling which Earth surface temperature and carbon dioxide concentration exhibit during the recent geologic past. Since relative timings … Continue reading
Very worthwhile to read Okazaki’s Nerds vs. Breaking Bad. I have just watched the first three episodes of this show and I have mixed feelings about it. I’m not giving it a review here but just want to make three … Continue reading
The RealClimate blog has a very nice history of how these have developed today.