Historical GHG Emissions: Generally

  • strict warning: Non-static method view::load() should not be called statically in /hermes/bosnaweb19a/b696/ipg.chicagoclimateonline/sites/all/modules/views/views.module on line 906.
  • strict warning: Declaration of views_handler_argument::init() should be compatible with views_handler::init(&$view, $options) in /hermes/bosnaweb19a/b696/ipg.chicagoclimateonline/sites/all/modules/views/handlers/views_handler_argument.inc on line 744.
  • strict warning: Declaration of views_plugin_style_default::options() should be compatible with views_object::options() in /hermes/bosnaweb19a/b696/ipg.chicagoclimateonline/sites/all/modules/views/plugins/views_plugin_style_default.inc on line 24.
  • strict warning: Declaration of views_plugin_row::options_validate() should be compatible with views_plugin::options_validate(&$form, &$form_state) in /hermes/bosnaweb19a/b696/ipg.chicagoclimateonline/sites/all/modules/views/plugins/views_plugin_row.inc on line 134.
  • strict warning: Declaration of views_plugin_row::options_submit() should be compatible with views_plugin::options_submit(&$form, &$form_state) in /hermes/bosnaweb19a/b696/ipg.chicagoclimateonline/sites/all/modules/views/plugins/views_plugin_row.inc on line 134.
  • strict warning: Non-static method view::load() should not be called statically in /hermes/bosnaweb19a/b696/ipg.chicagoclimateonline/sites/all/modules/views/views.module on line 906.
  • strict warning: Non-static method view::load() should not be called statically in /hermes/bosnaweb19a/b696/ipg.chicagoclimateonline/sites/all/modules/views/views.module on line 906.
  • strict warning: Non-static method view::load() should not be called statically in /hermes/bosnaweb19a/b696/ipg.chicagoclimateonline/sites/all/modules/views/views.module on line 906.
  • strict warning: Declaration of views_handler_filter::options_validate() should be compatible with views_handler::options_validate($form, &$form_state) in /hermes/bosnaweb19a/b696/ipg.chicagoclimateonline/sites/all/modules/views/handlers/views_handler_filter.inc on line 607.
  • strict warning: Declaration of views_handler_filter::options_submit() should be compatible with views_handler::options_submit($form, &$form_state) in /hermes/bosnaweb19a/b696/ipg.chicagoclimateonline/sites/all/modules/views/handlers/views_handler_filter.inc on line 607.
  • strict warning: Declaration of views_handler_filter_boolean_operator::value_validate() should be compatible with views_handler_filter::value_validate($form, &$form_state) in /hermes/bosnaweb19a/b696/ipg.chicagoclimateonline/sites/all/modules/views/handlers/views_handler_filter_boolean_operator.inc on line 159.

Greenhouse gasses (GHG) are gases that absorb and emit radiation in the thermal range, thereby contributing to the greenhouse gas effect.  Since pre-industrial times, emissions of greenhouse gasses, most notably CO2, CH4, and N2O, have increased due to human activities. The total GHG concentrations in CO2 equivalence (CO2-eq), as presented by the IPCC Fourth Assessment Report (2007) is estimated at roughly 455 parts per million (ppm), with a reported range 433-477 ppm CO2-eq.