Global Ship Emissions Maps

This website makes available global gridded inventories of ship emissions using a power-weighted approache to map top-down estimates onto an improved ICOADS data set, which we suggest is the most appropriate global ship traffic proxy identified to date for using a top down approach. These files represent updated inventories for 2001 published in JGR by Corbett and Koehler (2003/2004). These estimates are in good agreement with 2005 published work in JGR by Eyring et al.

Geographically resolved files with relative proportions of power-weighted ship traffic are available to plot alternative global inventories. Proxies are derived from ICOADS, AMVER, and a combination of the two. They can be selected at this location.

Please cite the source of this work using this reference:

Wang, C., J.J. Corbett, and J. Firestone, Improving Spatial Representation of Global Ship Emissions Inventories, Environmental Science & Technology, Web Release Date: 01-Dec-2007;(Article) DOI: 10.1021/es0700799, 2007.

The ASCII to Raster conversion is described in the link provided. Data in ESRI ASCII raster format is explained in the link provided.

Posted March 2007; last update April 2010.

For more information on related research, click here.



Annual Data (Rasters)
(right-click and save file)

Units: Metric tonnes per grid cell

CO2 (as C) SOx (as S) NOx (as N)


CO BC HC PM


Units: Metric tonnes per grid cell

Monthly ASCII Data CO2 as C
(right-click and save file)

January February March April May June
July August September October November December


Units: Metric tonnes per grid cell

Monthly ASCII Data SOx as S
(right-click and save file)

January February March April May June
July August September October November

December



Units: Metric tonnes per grid cell

Monthly ASCII Data NOx as N
(right-click and save file)

January February March April May June
July August September October November December


Units: Metric tonnes per grid cell

Monthly ASCII Data CO
(right-click and save file)

January February March April May June
July August September October November December


Units: Metric tonnes per grid cell

Monthly ASCII Data BC
(right-click and save file)

January February March April May June
July August September October November December


Units: Metric tonnes per grid cell

Monthly ASCII Data HC
(right-click and save file)

January February March April May June
July August September October November December


Units: Metric tonnes per grid cell

Monthly ASCII Data PM
(right-click and save file)

January February March April May June
July August September October November December