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Meeting 4: Committee on Anthropogenic Methane Emissions in the United States
July 12-13, 2017
Woods Hole, MA
Details and Agenda TBA


Past Meetings

Meeting 1 — January 25, 2017-January 26, 2017

Download the agenda (pdf)

Meeting 2: Workshop on Anthropogenic Methane Emissions in the United States — March 28, 2017

University of Colorado Boulder
Sustainability, Energy, and Environment Complex (SEEC)
Sievers Room
 


BACKGROUND

The committee is charged to examine approaches for measuring, monitoring, presenting, and developing inventories of anthropogenic methane emissions to the atmosphere, with focus on the United States. Specifically the committee will write a report that:

  1. discusses how methane emissions measurements, monitoring data, and inventories are used and usable for managing emissions, scientific research, and other purposes;
  2. assesses scientific understanding with respect to published inventories of US anthropogenic methane emissions, including estimates of current emissions, recent trends, and projections of future emissions;
  3. describes and evaluates approaches used to measure and monitor methane emissions;
  4. recommends how to present results of methane emissions studies to facilitate comparisons among studies and to ensure results are useful for policymaking;
  5. describes and evaluates approaches used to develop inventories of past, present and future methane emissions;
  6. recommends best available approaches for addressing key uncertainties, areas of incomplete understanding, and technical challenges in developing methane inventories; and
  7. recommends research needed to improve methane emissions measurement, monitoring, and inventory development.

 

This workshop serves as the first of several meetings that will be held to inform the committee in the development of their report. The committee anticipates gathering information on a wide variety of topics related to their charge throughout the study. Because this workshop will take place in Boulder, some emphasis has been placed on topics relevant to the expertise of local scientists and stakeholders.

 


8:30 A.M.: Welcome and introductions — James White, University of Colorado Boulder (Committee Chair) | slides | video

  • Context and purpose of the study
  • Objectives of the workshop

 


8:45 A.M.: Session 1: Overview of methodologies for measuring and monitoring methane emissions
Session objective: to improve understanding of recent trends in atmospheric methane concentration and some of the common emissions measurement approaches

Committee moderator: Lori Bruhwiler, NOAA
Ed Dlugokencky, NOAA — methane monitoring and observed trends | slides | video
Sourish Basu, NOAA — space-based methane measurement methodologies | slides | video
Stefan Schwietzke, NOAA — aircraft/basin-scale measurements | slides | video
Scott Herndon, Aerodyne — bottom-up measurements (tracer-flux) | slides | video

Discussion questions:

  • What are the strengths of each approach relative to other techniques and what are the primary sources of uncertainty?
  • Are there specific questions or analyses that lend themselves best to one approach vs. another? Which techniques are used for inventory development?
  • Can these approaches attribute methane to nature vs. anthropogenic sources and individual source sectors?

 

10:30 A.M.: Break
 


11:00 A.M.: Session 2: Reconciling top-down and bottom-up methane measurements

Session objective: to learn about the latest research in identifying methane sources in the oil and gas sector and reconciling top-down and bottom-up measurements

Committee moderator: David Allen, University of Texas, Austin

Gaby Petron, NOAA — use of ethane to methane ratios; general issues surrounding top down–bottom up flux estimates | slides | video
Dan Zimmerle, CSU — recent reconciliation research | slides | video
Tim Skone, NETL — Synthesis of EDF supported studies | slides | video

Discussion questions:

  • What are limitations of top-down vs. bottom-up methods (in general)?
  • How does new research affect our understanding of methane sources, their comparison/reconciliation (spatially and temporally), and the uncertainties associated with current measurement approaches?
  • Can new research help to reconcile the existing discrepancies between top-down vs. bottom-up measurement approaches?
  • How does that latest research compare with existing inventories?

 

12:15 P.M.: Lunch
 


1:15 P.M.: Session 3: Sectoral and local-scale emissions sources and measurement methodologies
Session objective: learn about methane emissions quantification in specific sectors and urban landscapes, that are outside the specific expertise of the Committee

Committee moderator: Jean Bogner, University of Illinois, Chicago

Arlene Adviento-Borbe, USDA ARS — rice | slides | video
Diego Rosso, UC Irvine — wastewater | slides | video
Rob Jackson, Stanford — urban landscapes | slides | video
Paul Shepson, Purdue University — urban landscapes | slides | video

Discussion questions:

  • What are the largest uncertainties associated with methane measurements and/or activity data in these sectors/settings?
  • Are improved methodologies needed to estimate the magnitude of emissions from these sources relative to the sectors known to dominate anthropogenic methane emissions?

 

2:45 P.M.: Break
 


3:15 P.M.: Session 4: Presenting study results to meet user needs
Session objective: to learn about how methane inventories are used at the state level and discuss how study results can best be reported and presented for policymaking.

Committee moderator: Lisa Hanle
Martha Rudolph, Colorado Dept. of Public Health & Environment — use of methane inventories to inform state-level policy decisions | video (audio only)
Jana Milford, University of Colorado, Boulder — state rulemaking and methane information needs | slides | video

Discussion questions:

  • What are the challenges for using existing methane inventories?
  • What changes in reporting study results and emissions data would facilitate easier use by policymakers and others interested in comparisons across measurement approaches?

 


4:15 P.M.: Townhall discussion, to allow all workshop participants to offer additional contributions to the discussion.

Committee moderator: Jim White

5:15 P.M.: Adjourn


Webinar: Industry stakeholder perspectives on methane emissions, measurement methodologies, and user needs —
April 27, 2017, 1-3pm ET

Webinar objective: To learn about industry perspectives and activities focused on measuring methane emissions and improving measurement methodologies

1:00 PM: Welcome — Jim White (Moderator and Committee Chair), University of Colorado Boulder | slides | video

1:10 PM: Gaps in knowledge for quantifying methane emissions in the natural gas sector
and overall industry perspectives of methane activities
— Matthew Harrison, AECOM | slides | video

1:25 PM: Overview of GTI methane projects and use of new technologies to measure emissions
Chris Moore, Gas Technology Institute | slides | video

1:40 PM: Landfill methane estimates for the U.S. GHG Inventory and GHG Reporting Program — Kerry Kelly, WM Waste Management | slides | video

1:55 PM: Measurement of landfill methane emissions — Roger Green, WM Waste Management | slides | video

2:10 PM: Measurement approaches for methane emissions from coal mines — Özgen Karacan, Petroleum Engineer, U.S. Geological Survey | slides | video

2:25 PM: Cow of the Future® and methane emissions reductions activities within the dairy industry — Juan Tricarico, Innovation Center for U.S. Dairy | slides | video

2:40 PM: Discussion and questions from study committee

3:00 PM: Adjourn

Meeting 3: Committee on Anthropogenic Methane Emissions in the United States — May 16, 2017

University of California, Davis
ARC Conference Center, Meeting Room #1

BACKGROUND
The committee is charged to examine approaches for measuring, monitoring, presenting, and developing inventories of anthropogenic methane emissions to the atmosphere, with focus on the United States. Specifically the committee will write a report that:

  1. discusses how methane emissions measurements, monitoring data, and inventories are used and usable for managing emissions, scientific research, and other purposes;
  2. assesses scientific understanding with respect to published inventories of US anthropogenic methane emissions, including estimates of current emissions, recent trends, and projections of future emissions;
  3. describes and evaluates approaches used to measure and monitor methane emissions;
  4. recommends how to present results of methane emissions studies to facilitate comparisons among studies and to ensure results are useful for policymaking;
  5. describes and evaluates approaches used to develop inventories of past, present and future methane emissions;
  6. recommends best available approaches for addressing key uncertainties, areas of incomplete understanding, and technical challenges in developing methane inventories; and
  7. recommends research needed to improve methane emissions measurement, monitoring, and inventory development.

 
This workshop serves as one of several meetings being held to inform the committee in the development of their report. The committee anticipates gathering information on a wide variety of topics related to their charge throughout the study. Because this workshop will take place in California, some emphasis has been placed on topics relevant to the expertise of local scientists and stakeholders.

CLOSED SESSION (8:30 a.m. – 10:15 a.m.)

OPEN SESSION (10:30 a.m. – 3:45 p.m.)

10:30 A.M.: Welcome and introductions — James White, U of Colorado Boulder, Committee Chair | Slides | video

  • Context and purpose of the study
  • Objectives of the meeting

 

10:45 A.M.: Session 1: Methane measurement methodologies and taxonomy

Session objective: to improve understanding of methane measurement research in California for state and regional uses, and learn about approaches to best compare results across studies

Committee moderator: Fiji George, Southwestern Energy
Marc Fischer, Lawrence Berkley National Laboratory — Quantifying sources of methane emissions | Slides | Video
Abhinav Guha, Bay Area Air Quality Management District -– Methane emissions from the San Francisco Bay Area | Slides | Video
Nazli Yesiller, California Polytechnic State University -– Landfill methane measurement methodologies (remote participation) | Slides | Video
Garvin Heath, National Renewable Energy Laboratory -– Taxonomy, life cycle analysis, and meta-analyses for improving emissions estimates from oil and gas | Slides | Video

Discussion questions:

  • What are the current challenges for measuring methane emissions for state or regional scale inventory development? Are these similar or distinct from challenges of developing a national scale inventory?
  • What are possible ways the current challenges in methane data collection and reporting could be addressed by the research community? How can data be made more readily usable by policy makers?

12:15 P.M.: Lunch

12:45 P.M.: Joseph King, U.S. Dept. of Energy — Update on ARPA-E methane emissions technology testing | Slides | Video

 

1:15 P.M.: Session 2: California methane activities: Stakeholder engagement, regulations, and state-level decision making

Session objective: learn about various methane activities occurring at the state and local level and discuss opportunities to improve communication of methane emissions information and use in state-level decision making

Committee moderator: April Leytem, USDA Agricultural Research Service
Ryan McCarthy, California Air Resources Board – use of methane emissions information in the decision making process | Video
Frank Caponi, Los Angeles County Sanitation Districts – engineering landfills to meet air quality and methane regulations | Slides | Video
Cynthia Cory, California Farm Bureau Federation – methane information needs for the California farmers and ranchers | Slides | Video
J.P. Cativiela, Dairy Cares – sustainability and methane information needs for dairy farmers | Slides | Video

Discussion questions:

  • What are the primary methane emissions information needs for various stakeholder groups in California?
  • What information (local, state, or national) on methane emissions is needed from the research community to improve data collection or usability of existing data?
  • What are the strengths and weaknesses of existing data? How is this information used in the state regulatory process?

 

2:45 P.M.: Break
 

3:00 P.M.: Session 3: Measuring methane emissions from the agricultural sector

Session objective: to learn about the research and methodologies for quantifying methane emissions from livestock and manure management

Committee moderator: Ermias Kebreab, UC Davis
Kris Johnson, Washington State University – methane emissions measurement methodologies from ruminant livestock | Slides | Video
Rick Todd, U.S. Dept. of Agriculture, Agricultural Research Service – manure management and methane emissions | Slides | Video

Discussion questions:

  • What are the largest challenges to the agricultural sector with respect to methane emissions?
  • What additional information is needed to improve measurement methodologies and/or the development of inventories?

 

3:45 P.M.: Open session adjourns


Public Webinar: Focus on NGO Perspectives — June 1, 2017