Climate Letter #643

Posted on April 25, 2016 by Carl Campbell
CO2 emissions update.  Recent daily and weekly reports from Mauna Loa show a leveling off of emissions uncomfortably close to 408 ppm.  This comes in the aftermath of an unexplained jump in early April that yielded a daily high of 409.34.  If the average for the current week is around 408, as now looks likely, then that is probably where it will remain on average through the “rollover” month of May, prior to the usual summer decline.  That would be an increase of fully 4 ppm since May of one year ago, which is troubling for many reasons.  We know that there was no increase in human activity that would push the figure that high—so where did the gas come from, or have some important sinks begun to fail?  (This website has much critical information worthy of one’s regular reference.)

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The Indian Ocean has had another record-breaking tropical storm.  Surface water temperatures for almost the entire ocean have been running well above normal, generating a growing number of hurricane-strength storms in regions where they are not expected.
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The global climate agreement now needs to be fulfilled.  As this article points out, policies that are actually effective have yet to be put in place, and time is running out.  The main focus must be on putting an end to every human activity that produces greenhouse gas, primarily from the burning of fossil fuels but several others as well.  Each year of delay adds something extra to the atmospheric burden, which serves to hasten the arrival of the day of ultimate reckoning at the other end.  That will make genuine mitigation efforts all the more intense, or traumatic, when they finally occur, as they surely will.  Maybe sooner than we think.
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A policy-focused group we don’t hear much about, seeking rapid decarbonization.  It appears to have the right kind of makeup for getting things done in an organized fashion.  Effective carbon pricing, an absolute must for speeding up the energy transition, is an item high on this group’s agenda.  Governments alone can’t seem to get together on such a plan, but if the plan is first formulated by an outside agency that has top-level credibility, without any ivory tower trappings, it would be hard to turn down.
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A new way to make concrete uses CO2 as an ingredient.  The CO2 serves as a replacement for limestone.  One version of the material has passed all the needed tests and is now in production at a number of plants.  More ideas for reducing concrete’s large carbon footprint are in the works.
Carl

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