Ship sulfur emissions found to strongly impact worldwide ocean and coastal pollution

PITTSBURGH -- Ship emissions are a dominant contributor to atmospheric sulfur dioxide concentrations over much of the world's oceans and in several coastal regions, researchers from Carnegie Mellon University and Duke University report in a Nature article today.

This news follows the Carnegie Mellon team's initial finding that air emissions from trade-carrying cargo ships powered by diesel engines are among the world's highest polluting combustion sources per ton of fuel consumed, published Oct. 30, 1997 in Science.

The most important finding from this study, according to Carnegie Mellon authors Spyros Pandis, James Corbett, Paul Fischbeck and Kevin Capaldo, and Duke author Prasad Kasibhatla, is that ships affect scientific understanding of climate change.

Ships use the tar-like, sulfur-concentrated remains of petroleum left once the gasoline, oil and all other products have been extracted. This high-sulfur fuel is responsible for the significant environmental impacts of ship sulfur emissions. Regionally, sulfur emissions contribute to acid rain, which can pollute freshwater lakes and rivers, and damage vegetation.

"Ships also have been known to contribute to the formation of clouds over the ocean," Pandis said. "Sulfur emissions have a large role in the formation of aerosols (tiny particles) on which water condenses to form clouds. The interactions of aerosols and clouds have been identified as one of the most important uncertainties in understanding the rate of climate change, or global warming, because clouds reflect energy and thereby reduce the net warming effect of long-lived greenhouse gases."

"Since aerosols have a much shorter lifetime in the atmosphere -- about a week compared to decades and hundreds of years for greenhouse gases -- these effects have been difficult to quantify," Corbett added. "Our study shows that sulfur from ships may be an important factor in solving this part of the glob

Contact: Debra Jacob
Carnegie Mellon University

Page: 1 2

Related biology news :

1. Fe-TAML(R) activators developed at Carnegie Mellon remove recalcitrant sulfur from automotive fuels
2. Ann Arbor chemist wins national award for extracting sulfur from fuel
3. China now leads world in sulfur emissions, study shows
4. Underground carbon dioxide storage reduces emissions
5. Power plants, other industry could offer contracts to farmers in helping reduce carbon emissions
6. MITs plasmatron cuts diesel bus emissions, promises better gas engine efficiency
7. Computer models forecast sharp increase in temperature if heat-trapping emissions continue to rise
8. INEEL uses ethanol to reduce petroleum consumption, cut exhaust emissions
9. Engineers develop technology to reduce industry emissions
10. Reducing primary chemical emissions does not always reduce pollution
11. New technology reduces noxious emissions

Post Your Comments:

(Date:3/27/2020)... , ... March 25, 2020 , ... ... adapted their platform to address the need to rapidly launch and scale COVID-19 ... and time consuming to deliver, has been adapted for COVID-19 specific content and ...
(Date:3/20/2020)... (PRWEB) , ... March 20, 2020 , ... ... development of human embryonic stem cell (ESC) derived mesenchymal stem cells (hES-MSC), through ... for the treatment of neurological, autoimmune, and rare orphan diseases, today announced that ...
(Date:3/19/2020)... , ... March 19, 2020 , ... The former Jason ... as host to the informational show "In Depth". The TV program highlights a large ... is shifting gears on a new episode with a dive into the world of ...
Breaking Biology News(10 mins):
(Date:2/21/2020)... ... February 20, 2020 , ... The ... chemistry. Humans have been increasingly successful in innovating ways to engineer these ... technologies and strategies for modern molecular biology (e.g., gene sequencing, writing, and ...
(Date:2/21/2020)... ... February 21, 2020 , ... Pharmaceutical manufacturers are under ... to adapt to new approaches like ‘Industry 4.0’ and continuous manufacturing, combat the ... medicine and therapies. But with an industry with the world’s tightest regulations and ...
(Date:2/19/2020)... (PRWEB) , ... February 19, 2020 , ... ... process solutions for the life sciences industry, today announced the opening of a ... Nagamura, Associate Partner, Red Nucleus R&D. , Red Nucleus announced the new office ...
(Date:2/11/2020)... ... February 11, 2020 , ... Synagro ... North America, today announced that the City of Fort Worth has partnered with ... needs. Commencing in April of 2020, Synagro will assume operation of the city’s ...
Breaking Biology Technology:
Cached News: