Bridge-based sensing of NOx and SO2 emissions from ocean-going ships. (July 2016)

• Record Type: Journal Article
• Authors: Burgard, Daniel A.; Bria, Carmen R.M.
• Is Part Of: Atmospheric environment. Volume 136(2016)
• Page Start: 54
• Page End: 60
• Publication Date: 2016-07
• Subjects: Remote sensing -- Ship emissions -- NOx -- Sulfur dioxide -- Spectroscopy -- Cruise ships; Air -- Pollution -- Periodicals; Air -- Pollution -- Meteorological aspects -- Periodicals; 551.51
• DOI: 10.1016/j.atmosenv.2016.04.014
• Languages: English
• ISSNs: 1352-2310

Abstract

Abstract: As emissions from nonroad mobile sources face increased regulatory scrutiny, a surprisingly few number of real-world, in-use measurements exist for these sources. This paper reports the first use of an open-path Remote Sensing Device (RSD) to measure emissions from ocean-going ships, including cruise ships. This noninvasive technique measured NOx and SO2 emission factors from 16 individually identified ocean-going ships as they passed under the Lions Gate Bridge in Vancouver, B.C. and their exhaust plumes passed through the sensing beam of the RSD on a bridge directly above. Ship NOx emissions generally agreed with previous studies showing no emissions trends across vessel type. Ship SO2 emissions were reasonable based on expected Environmental Control Area fuel sulfur requirements and corresponded to 0.4–2.4% sulfur in the fuels. This method's specificity of individual vessel SO2 measurements suggests that this technique could be used as a tool to detect high sulfur fuel use in vessels. Graphical abstract: Highlights: Measured NOx and SO2 emissions from in-use ocean-going ships. First emission measurements from individually identified in-use cruise ships. Demonstration of a remote sensor that can estimate sulfur content in fuels from ships.