Updated CO2 Emission Inventory Provided By Kevin Gurney Of Purdue University

Kevin Gurney of Purdue University has alerted us to a valuable source of information on the emission inventory of CO2 into the atmosphere. Climate Science has weblogged on this Vulcan project previously (see).

The e-mail from Kevin Gurney announcing the release is


Today we are releasing a new version of the Vulcan data product, version 1.1……This version has a number of improvements including an improved area source module, better mobile diurnal emissions representation,and better residential and commercial time structure.

We have also released a portion of the vulcan inventory on Google Earth. You can see information down to the county level by sector and per capita. We included the geocoded powerplant and airport emissions. A flyover has been created and it is up on YouTube at:


You can also now donate directly to the Vulcan project.

As always, all of the Vulcan information can be accessed from the vulcan website at:


In the associated press release, this project is described further (see). An excerpt reads

“The Vulcan layer on Google Earth shows carbon dioxide emissions in metric tons at the state level, county level and per capita. It also breaks down emissions by the different sectors   the emissions, including aircraft, commercial, electricity production, industrial, residential and transport.”

An important perspective on this climate forcing is also presented in the press release where it is written

“Carbon dioxide is the most important human-produced gas contributing to global climate change, Gurney said.”

Climate Science agrees with this statement as it accurately reflects that the atmospheric concentrations of this gas is the one undergoing the most change from the pre-industrial atmosphere.

What is a critically important next step, however, is to do the same kind of analysis for the other human climate forcings including inventories of the input into the atmosphere and locations of deposition of human-caused aerosols including sulphates, nitrogen compounds and soot, as well as of the alteration of the landscape by human management in terms of how the surface fluxes of heat, moisture, momentum and trace gases such as carbon dioxide are altered.

Such a comphrehensive inventory would provide policymakers with information on all of the first order human climate forcings. This inventory is needed since, as reported in testimony to Congress (see) and concluded in a National Research Council Report (see)

The human influence on climate is significant and involves a diverse range of first-order climate forcings, including, but not limited to the human input of CO2.




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