North American STEEM data

A spatial inventory produced by
Chengfeng Wang, Ph.D., James J. Corbett, P.E., Ph.D., and Jeremy Firestone, Ph.D.

Reference:
Wang,C., J.J. Corbett, and J. Firestone, Modeling Energy Use and Emissions from North American Shipping: Application of the Ship Traffic, Energy, and Environment Model, Environ. Sci. Technol.; 41(9), 3226-3232, 2007.

This website makes available spatial and temporal data for commercial marine emissions inventories for cargo traffic in shipping lanes serving North American coastlines.  A set of geographically resolved inventories were produced that describe air emissions for a 2002 baseline year.  Annual gridded inventories are provided for the following pollutants:  Sulfur (SOx as SO2), Nitrogen (NOx), Carbon dioxide (CO2), Particulate Matter (PM), Hydrocarbons (HC), and Carbon monoxide (CO).  Monthly gridded inventories for each pollutant. 

Units are kg per 4 km x 4 km (16 sq km).
ARB Domain CO2 results
Ship Traffic, Energy, and Environmental Model Output for North America. Illustration of domain extent and emissions per 16 sq km grid for CO2.

With partial funding from the the California Air Resources Board (ARB), and the Commission for Environmental Cooperation of North America (CEC), this inventory of commercial marine emissions for North America supports ARB, CEC, western regional states, United States federal, and multinational efforts to quantify and evaluate potential air pollution impacts from shipping in U.S, Canadian, and Mexican coastal waters.

The inventory was estimated spatially using the Waterway Network Ship Traffic, Energy and Environment Model (STEEM) characterizes ship traffic, estimates energy use, and assesses the environmental impacts of shipping.  STEEM uses an empirical waterway network based on shipping routes revealed from observed historical ship locations. The ship traffic module of STEEM geographically and temporally describes ship traffic based on an empirical waterway network, historical ship movement data, and ship attributes data. Applications of STEEM include producing spatially-resolved energy and emissions inventories, assessing the impacts of shipping activities on the environment, e.g. invasive species carried by ballast water, interaction between ships and marine mammals, evaluating navigation safety, and other potential uses, e.g. logistics planning and disaster response planning.  Research on applying STEEM on estimating the probability of the interaction between ships and whales is underway. The application of STEEM on navigation safety evaluation and other uses is reserved for future research.

Domain and projection details are available here in pdf format.

The ARB/CEC report describing the baseline inventory is available here in pdf format.

The ARB report describing 2010 and 2020 forecast scenarios is available here in pdf format.

Zip files containing forecasts for 2010 and 2020 in ASCII format are available.

Site Posted April 2007; Last Update February 2015

We produced pollutant inventories in both ASCII and ArcGIS raster formats. The raster files associated with aux files and index files, so we zipped the sets into annual and monthly folders for download:

Annual Raster data - Monthly Raster data


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


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

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

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

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

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

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

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

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

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

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

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

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

 

Site Posted April 2007; Last Update February 2015  

Featured Faculty

James Corbett

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Associate Director, Marine Policy & Professor Marine Policy

 

CEOE School & Departments

School of Marine Science & Policy

Advancing the understanding, stewardship, and conservation of estuarine, coastal, and ocean environments.

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Department of Geological Sciences

Discovering how geological processes have operated over various time scales to create and influence the planet’s surface environments.

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Department of Geography

Investigating the interactions between people and the environment and the processes that explain the location of human and natural phenomena.

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Phone: 302-831-2841 • E-mail: ceoe-info@udel.edu

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