Mapping Urban Pipeline Leaks: Methane Leaks Across Boston

Posted by Content Coordinator on Tuesday, November 27th, 2012

BOSTON UNIVERSITY DEPARTMENT OF EARTH AND ENVIRONMENT

Abstract

Natural gas is the largest source of anthropogenic emissions of methane (CH4) in the United States. To assess pipeline emissions across a major city, we mapped CH4 leaks across all 785 road miles in the city of Boston using a cavity-ring-down mobile CH4 analyzer. We identified 3356 CH4 leaks with concentrations exceeding up to 15 times the global background level. Separately, we measured δ13CH4 isotopic signatures from a subset of these leaks. The δ13CH4 signatures (mean = −42.8‰ ± 1.3‰ s.e.; n = 32) strongly indicate a fossil fuel source rather than a biogenic source for most of the leaks; natural gas sampled across the city had average δ13CH4 values of −36.8‰ (±0.7‰ s.e., n = 10), whereas CH4 collected from landfill sites, wetlands, and sewer systems had δ13CH4 signatures ∼20‰ lighter (μ = −57.8‰, ±1.6‰ s.e., n = 8). Repairing leaky natural gas distribution systems will reduce greenhouse gas emissions, increase consumer health and safety, and save money.

Download full report (ScienceDirect.com): Mapping Urban Pipeline Leaks: Methane Leaks Across Boston

About the Boston University Department of Earth & Environment
www.bu.edu/earth/
“The Department of Earth & Environment is the nexus of research, education, and outreach related to Planet Earth at Boston University. This vision includes the physics and chemistry of the Earth’s solid earth and climate system, the ecology and biogeochemistry of terrestrial and marine ecosystems, and the dynamic interactions of people and society with the natural environment on local, regional, and global scales.

Our research and teaching foci include both disciplinary foundations and interdisciplinary themes, and are explicitly designed to be outward looking and inclusive of the broad mosaic of Earth & Environment-related units, programs, and activities at Boston University.”

Tags: , , , , , ,

Comments are closed.

Follow InfraUSA on Twitter Facebook YouTube Flickr

CATEGORIES


Show us your infra! Show us your infra!

Video, stills and tales. Share images of the Infra in your community that demands attention. Post your ideas about national Infra issues. Go ahead. Show Us Your Infra!  Upload and instantly share your message.

Polls Polls

Is the administration moving fast enough on Infra issues? Are Americans prepared to pay more taxes for repairs? Should job creation be the guiding determination? Vote now!

Views

What do the experts think? This is where the nation's public policy organizations, trade associations and think tanks weigh in with analysis on Infra issues. Tell them what you think.  Ask questions.  Share a different view.

Blog

The Infra Blog offers cutting edge perspective on a broad spectrum of Infra topics. Frequent updates and provocative posts highlight hot button topics -- essential ingredients of a national Infra dialogue.


Dear Friends,

 

It is encouraging to finally see clear signs of federal action to support a comprehensive US infrastructure investment plan.

 

Now more than ever, our advocacy is needed to keep stakeholders informed and connected, and to hold politicians to their promises to finally fix our nation’s ailing infrastructure.

 

We have already engaged nearly 280,000 users, and hoping to add many more as interest continues to grow.

 

We require your support in order to rise to this occasion, to make the most of this opportunity. Please consider making a tax-deductible donation to InfrastructureUSA.org.

 

Steve Anderson

Managing Director

 

SteveAnderson@InfrastructureUSA.org

917-940-7125

InfrastructureUSA: Citizen Dialogue About Civil Infrastructure