Tag: Greenhouse Gases

The National Heat Crisis Is Keeping Climate Change & Its Mitigation Top of Mind

Most Americans are conscious of the need to reduce carbon emissions which lead to global warming such as we are experiencing to a limited extent here in the metro area but to a much greater extent elsewhere in the country, Europe and the rest of the world.

Because of the increased attention to this topic, we’ll all be hearing a lot more about “embedded” carbon, not just greenhouse gas emissions.

I’ve written in the past about the outsized contribution of cement and steel manufacturing to our climate change crisis. It is estimated that the manufacture of cement and steel is responsible for 5% and 7% of global greenhouse gas (GHG) emissions respectively, so much attention is being focused on the “greening” of these two industries.

Both the Biden administration and the State of Colorado have enacted measures using “Buy Clean” terminology to accomplish a reduction of embedded GHG emissions in these two products in the bidding and construction of federal and state facilities — both buildings and highways/bridges.

Colorado is leading the nation with the passage of HB21-1303, the Buy Clean Colorado Act, which requires the Office of State Architect and CDOT to make sure that new projects are built with reduced embedded carbon.

Because the state and federal governments are such major buyers of new construction, cement and steel producers are being forced to focus on reducing GHG emissions, the benefits of which will likely spill over to private construction projects.

Here’s a link to how Colorado is tackling the implementation of this law on all projects that are put out to bid starting Jan. 1, 2024.

Bidders will have to provide “Environmental Product Declarations” (EPDs) on the following “eligible materials” used in the construction of state projects: asphalt & asphalt mixtures; cement and concrete mixtures; glass; post-tension steel; reinforcing steel; structural steel; and wood structural elements.

HB21-1303 even seeks to reduce the GHG emissions involved in the transportation of building materials from their place of the manufacture to the build site. The state will want a report on any materials transported over 100 miles, including the weight, method of transportation and total distance traveled in order to compute the “global warming potential” of their transport for future possible consideration/regulation.

Were Last Week’s “Climate Strikes” Enough of a Wake-up Call on Climate Change?

We can thank Al Gore for educating us about global warming, but I wish a non-politician such as Carl Sagan had performed that service. I can’t think to any other scientific research which became partisan in a similar way.

Remember CFCs and the ozone hole? It wasn’t a partisan issue. The issue was addressed quickly in a bi-partisan manner.

It was meteorologists, not politicians, that taught us about El Nino and La Nina—the cyclical events in which changes in ocean temperature create weather patterns affecting our entire continent. No one has said El Nino is not real.  It is accepted science — like climate change.

It’s only because Al Gore introduced us to the “inconvenient truth” about climate change that his teachings were disputed and rejected as left-wing propaganda by those on the right. How sad, how unfortunate, and how deadly the consequences.

Last Friday I attended the “Climate Strike” event on the Colorado School of Mines campus and watched news coverage of bigger events around the world.  I’m 72 now, and, yes, the climate will worsen before I die. But those under 40 and certainly those under 20 are seeing the early effects of global warming and worry that their world will be unlivable by the time they’re my age.  For them, it’s a huge crisis.

Back in June, I attended my 50th reunion at M.I.T, during which there was a Technology Day symposium on climate change. One of the speakers, Prof. Noelle Selin, told us that the global concentration of carbon dioxide was 325 parts per million when we graduated in 1969, but now it was 410 ppm. She made us think about those who graduated in 2019 (who she dubbed “the Class of 410 ppm”) and speculated on the class that would be graduating at their 50th reunion. “Will it be the Class of 600 ppm or the Class of 700 ppm?” she asked. And what will life be like for them at their 50th reunion?

It was a sobering presentation. And you can be sure that it was even more sobering for the Class of 2019 and for M.I.T. students who have yet to graduate.  To view her 19-minute presentation, click here.

The impact on real estate — and national security — is apparent when you consider all the “climate refugees” who are likely to migrate from heavily impacted areas such as the Bahamas, Florida, Houston — and Syria, where drought, as much as civil war, contributed to the exodus of Syrians to Europe. Indeed, over a decade ago the U.S. Defense Department labeled climate change a threat to national security. You can understand why.  I do.

The headline of my column on Jan. 14, 2014 was, “We May Have Already Passed the Tipping Point on Climate Change.” That statement was based on the already dramatic reduction in summer sea ice in the Arctic Ocean, as documented by the Earth Policy Institute at Rutgers. I published their chart showing a correlation between the increase in atmospheric CO2 from 300 to 400 ppm since the Industrial Revolution, and the 50% loss of summer sea ice in the Arctic between the late 20th Century and 2013. 

The reason loss of sea ice creates a tipping point for our climate is that sea ice, being white, reflects sunlight, whereas open ocean, being dark, absorbs sunlight, causing more ice to melt and to melt faster. A warmer Arctic region in turn upsets weather patterns worldwide.

Almost six years have passed since I wrote that column, and now the Arctic Ocean is open and navigable for part of the summer. We have learned the term “polar vortex” and experienced the effects of wilder than normal fluctuations of the jet stream. Warmer oceans in the tropics have caused stronger, slower hurricanes, causing 100-year floods to become frequent, as we have already seen in Houston. These effects were already happening back in 2012 with superstorm Sandy in New York and New Jersey and even here in Colorado with the heavy rains and flooding of Sept. 2013.

Unfortunately, we have a president who will never admit he was wrong, so he will never admit that climate change is real, that it is exacerbated by CO2 emissions, and that the only hope, if there is any this late in the game, of reducing the impacts of climate change is to drastically reduce the output of greenhouse gases like CO2 and methane. Instead, inaction on climate change, and worse, may be this president’s #1 legacy.  How sad.