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GHG 5-Year Inventory  |  GHG Inventory FY08 

Greenhouse Gas Emissions at a Glance

The Greenhouse Gas (GHG) Inventory

In response to President Brody’s pledge to a University-wide climate change policy, the Johns Hopkins Center for a Livable Future, with assistance from Facilities and Support Services, conducted the first greenhouse gas (GHG) inventory of the Bloomberg School of Public Health.

JHSPH was selected in the summer of 2007 to pilot the initiative before conducting a University-wide inventory. To manage the School’s emissions it was critical to identify the sources and quantify the direct and indirect sources of emissions associated with the operation of the School. These sources include electricity; heating and cooling; solid waste; fleet; and refrigeration.

The inventory measured emissions of the six greenhouse gases specified by the Kyoto Protocol:

  • carbon dioxide
  • methane
  • nitrous oxide
  • hydrofluorocarbons
  • perfluorocarbons
  • sulfur hexafluoride

Because of the varying capacity of each gas to trap the sun’s energy, commonly known as global warming potential (GWP), a standard unit of measure is needed to compare each gas’s contribution to atmospheric warming. Because carbon dioxide is the most common of the greenhouse gases, the contributions of the other gases are calculated based on their carbon dioxide equivalent (eCO2). The calculator converts the emissions of each gas into carbon dioxide equivalents and all emissions are reported in terms of Metric Tonnes of Carbon Dioxide Equivalent (MTeCO2).

For a greenhouse gas equivalencies calculator, please visit the EPA's Clean Energy site.

GHG 5-Year Inventory  |  GHG Inventory FY08 

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