By Jim Taylor, Editor MACS ACtion Magazine
Per an announcement in the Federal Register, the draft “1990-2009 Greenhouse Gas Emissions Inventory” is now available for public comment.
Full details are at http://www.epa.gov/climatechange/emissions/usinventoryreport.html and it’s there you’ll find links to either the complete document (over 14 Mb) or individual sections. You can get a good feel for the whole thing from the Executive Summary section. The report evaluates almost every single item that is in any way considered a potential greenhouse gas. Many of them are way-off our platter, but some are right in our lap.
One chart, shown below, identifies emissions sources by overall sector. Based on ALL emissions – not just HFC refrigerant but also CO2, CH4, N2O, PFC, and SF6 – the transportation segment is second on the list and responsible, EPA says, for more than one quarter of the 2009 overall GHG load. The numbers on the chart reflect teragrams (or million metric tons) of CO2 equivalent.
The notes accompanying the chart say
“Using this categorization, emissions from electricity generation accounted for the largest portion (33 percent) of U.S. greenhouse gas emissions in 2009. Transportation activities, in aggregate, accounted for the second largest portion (27 percent), while emissions from industry accounted for the third largest portion (20 percent) of U.S. greenhouse gas emissions in 2009.”
Three sectors account for 80 percent of the emissions, and the inventory attributes the remainder to (in order) the agriculture, commercial, and residential sectors, plus emissions from U.S. territories.”
The report is now in its public comment period, and EPA wants to hear what you think. Go to the web page mentioned above to review the sections that interest you. You’ll also find links and details on how to submit your comment. The deadline for comments is March 25, 2011, and all comments will be considered for inclusion in the final version of the document.
When having your mobile A/C system professionally serviced, insist on proper repair procedures and quality replacement parts. Insist on recovery and recycling so that refrigerant can be reused and not released into the atmosphere.
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