Environmental impact of transport : Climate change

EI001 Tonnes of carbon dioxide (CO2) equivalent emissions from domestic transport (road, rail, maritime, aviation)

Series Data

Metadata

Key reference number EI001
Definition of indicator CO2-e emissions by mode (tonnes)
Export date 21/08/2009
Core indicator information
Nature of data Quantitative
Data source MED Greenhouse gas report 1990 - 2006 p14
Frequency Annual
Disaggregation By mode (road, rail, aviation, maritime)
Timeliness 1 year
Quality of the data In the Energy Greenhouse Gas Report MED regarded the reseller component as being used by transport, but a recent MED report (http://www.med.govt.nz/templates/MultipageDocumentTOC____40472/) suggests that this over states the case. Instead of almost 80% of diesel being regarded as transport, the report suggests that the actual amount was about 64% in 2007. The corollary is that a much larger proportion of total diesel is used off-road in non-transport applications that previously thought.
MED is developing a methodology to better estimate on-road diesel use, and will also attempt to establish a historical time series. Until this work has been completed it is necessary to continue to use the MED data, while understanding that it overstates transport emissions and the growth rate of transport emissions.
Availability of forecast data none