METEC Publications


2025 Publications

24 December – Performance Evaluation of Survey Solutions in Detecting and Localizing Source-Level Emissions Using a Single-Blind Controlled Testing Protocol

Chiemezie Ilonze, Rachel Day, Ethan Emerson, Aidan Duggan, Ryan Brouwer, Daniel Zimmerle

1 December – Understanding Detection Success of Belowground Natural Gas Leaks in Urban Environments through Controlled Release Experiments

G Venkata Rao, Josh R. Aldred, Daniel J. Zimmerle, Kathleen M Smits

28 November – Intermittent Emissions from Oil and Gas Operations: Implications for Detection Effectiveness from Periodic Leak Detection Surveys

Anna L. Hodshire, Gerald P. Duggan, Daniel Zimmerle, Arthur Santos, Thomas McArthur, Jason Bylsma, Caroline B. Alden, David Youngquist, Amanda White, Gregory B. Rieker

23 November – Assessing the Potential Impact of Fugitive Methane Emissions on Offshore Platform Safety

Stuart N. Riddick, Mercy Mbua, Catherine Laughery, and Daniel J. Zimmerle

22 October – Evaluating the feasibility of using downwind methods to quantify point source oil and gas emissions using continuously monitoring fence-line sensors

Mercy Mbua, Stuart N. Riddick, Elijah Kiplimo, Kira B. Shonkwiler, Anna Hodshire, and Daniel Zimmerle

3 October – Automated recognition of oil and gas production infrastructure using satellite imagery

Sonu Dileep, Daniel J. Zimmerle, Nathaniel Blanchard 

29 July – Characterizing Tracer Flux Ratio Methods for Methane Emission Quantification Using Small Unmanned Aerial System

Ezekiel Alaba, Bryan Rainwater, Ethan Emerson, Ezra Levin, Michael Moy, Ryan Brouwer, Daniel Zimmerle

2 July – Computational Fluid Dynamics-Based Modeling of Methane Flows Around Oil and Gas Equipment

Abhinav Anand, Stuart Riddick, Kira B. Shonkwiler, Aashish Upreti, Michael Moy, Elijah Kiplimo, Mercy Mbua, and Daniel J. Zimmerle

9 May – Performance of mobile survey solutions for natural gas pipeline leaks under different soil type and moisture conditions

G. Venkata Rao, Richard S. Kolodziej IV, Daniel J. Zimmerle, Kathleen M. Smits

25 March – Design, Build, and Initial Testing of a Portable Methane Measurement Platform

Stuart N. Riddick, John C. Riddick, Elijah Kiplimo, Bryan Rainwater, Mercy Mbua , Fancy Cheptonui, Kate Laughery, Ezra Levin, and Daniel J. Zimmerle

18 March – Integrating Technical Economic and Management Requirements for Successful Measurement Informed Inventory: A Case Study

Jenna Brown, Dan Zimmerle

04 March – Automated Recognition of Oil and Gas Production Infrastructure Using Satellite Imagery *

Sonu Dileep, Nathaniel Blanchard, Daniel Zimmerle

01 January – Performance of survey solutions under single-blind controlled testing protocol. *

Chiemezie Ilonze, Rachel Day, Ethan Emerson, Aidan Duggan, Ryan Brouwer, Dan Zimmerle

2024

23 December – Using Prototypical Oil and Gas Sites to Model Methane Emissions in Colorado’s Denver-Julesburg Basin Using Mechanistic Emission Estimation Tool*

Winrose Mollel, Daniel Zimmerle, Arthur Santos, Anna Hodshire

10 December – Using Measurement-Informed Inventory to Assess Emissions in the Denver-Julesburg Basin *

Arthur Santos, Winrose Mollel, Jerry Duggan, Anna Hodshire, Prajay Vora, Daniel Zimmerle

13 Nov – Evaluating the accuracy of downwind methods for quantifying point source emissions *

Mercy Mbua, Stuart N. Riddick, Elijah Kiplimo, and Daniel Zimmerle

31 October –Addressing Low-Cost Methane Sensor Calibration Shortcomings with Machine Learning

Elijah Kiplimo, Stuart N. Riddick, Mercy Mbua, Aashish Upreti, Abhinav Anand, and Daniel J. Zimmerle

5 August – Estimating Total Methane Emissions from the Denver-Julesburg Basin Using Bottom-Up Approaches

Stuart N. Riddick, Mercy Mbua, Abhinav Anand, Elijah Kiplimo, Arthur Santos, Aashish Upreti, and Daniel J. Zimmerle

18 July – Reconciliation of Ground and Airborne Measurements of Methane Emissions from Oil and Gas Production

Jeffrey Nivitanont, Kristen Pozsonyi, Tim Vaughn, Arthur Barbaro dos Santos, Stuart Riddick, Shane Murphy, Daniel Zimmerle

12 June – Assessing the Progress of the Performance of Continuous Monitoring Solutions under a Single-Blind Controlled Testing Protocol

Chiemezie Ilonze, Ethan Emerson, Aidan Duggan, and Daniel Zimmerle

9 May – Flow and Transport of Methane from Leaking Underground Pipelines: Effects of Soil Surface Conditions and Implications for Natural Gas Leak Classification

J R R Navodi Jayarathne, Daniel Zimmerle, Richard S Kolodziej, Stuart Riddick, Kathleen M Smits

12 April – Comparison of Sub-Ppm Instrument Response Suggests Higher Detection Limits Could Be Used to Quantify Methane Emissions from Oil and Gas Infrastructure

Stuart N. Riddick, Mercy Mbua, Ryan Brouwer, Ethan W. Emerson, Abhinav Anand, Elijah Kiplimo, Seunfunmi Ojomu, Jui-Hsiang Lo and Daniel J. Zimmerle

10 April  – Point Sensor Networks Struggle to Detect and Quantify Short Controlled Releases at Oil and Gas Sites

Rachel Elizabeth Day, Ethan Emerson, Clay Bell, Daniel Zimmerle

3 April  – Evaluating Development of Empirical Estimates Using Two Top-Down Methods at Midstream Natural Gas Facilities

Jenna A. Brown, Matthew R. Harrison, Tecle Rufael, Selina A. Roman-White, Gregory B. Ross, Fiji C. George, and Daniel Zimmerle

29 February – Methane Emissions from Abandoned Oil and Gas Wells in Colorado.

Riddick, S. N., Mbua, M., Santos, A., Emerson, E. W., Cheptonui, F., Houlihan, C., Hodshire, A. L., Anand, A., Hartzell, W.  and Zimmerle, D. J.

19 February  – Point Sensor Networks Struggle to Detect and Quantify Short Controlled Releases at Oil and Gas Sites

Rachel Elizabeth Day, Ethan Emerson, Clay Bell, Daniel Zimmerle

8 February  – Assessing the progress of the performance of continuous monitoring solutions under single-blind controlled testing protocol

Chiemezie Ilonze, Ethan Emerson, Aidan Duggan, Daniel  Zimmerle

5 February  – Potential Underestimate in Reported Bottom-up Methane Emissions from Oil and Gas Operations in the Delaware Basin

Riddick, S.N.; Mbua, M.; Santos, A.; Hartzell, W.; Zimmerle, D.J.

15 January – Quantifying Non-steady State Natural Gas Leakage from the Pipelines Using an Innovative Sensor Network and Model for Subsurface Emissions – InSENSE.  Environmental Pollution, 341, 122810.

Lo, J. H., Smits, K. M., Cho, Y., Duggan, G. and Riddick, S. N.

 

December 11 – Reconciling Top-down and Bottom-up Methane Emissions Estimates in the Delaware Basin 

Riddick, S.N.; Mbua, M.; Santos, A.; Hartzell, W.; Zimmerle, D.J.

November 23 – Quantifying Non-steady State Natural Gas Leakage from the Pipelines Using an Innovative Sensor Network and Model for Subsurface Emissions – InSENSE.

Lo, J. H., Smits, K. M., Cho, Y., Duggan, G. and Riddick, S. N

November 17 – Uncertainty Quantification of Methods Used to Measure Methane Emissions of 1 g CH4 h−1

Stuart N. Riddick, Mercy Mbua, John C. Riddick, Cade Houlihan, Anna L. Hodshire, Daniel J. Zimmerle

October 29 – Using controlled subsurface releases to investigate the effect of leak variation on above-ground natural gas detection

Mbua, M., Riddick, S. N., Tian, S., Cho, Y., Houlihan, C., Cheptonui, F., Zimmerle, D. J. and Smits, K. M.

October 20 – Methane Emissions from Abandoned Oil and Gas Wells in Colorado

Stuart N. Riddick, Mercy Mbua, Arthur Santos, Ethan Emmerson, Fancy Cheptonui, Wendy Hartzell and Dan Zimmerle

October 12 – Estimating the Below-Ground Leak Rate of a Natural Gas Pipeline Using Above-Ground Downwind Measurements: The ESCAPE−1 Model

Fancy Cheptonui,  Stuart N. Riddick, Anna L. Hodshire, Mercy Mbua, Kathleen M. Smits, Daniel J. Zimmerle

September 20 – Informing Methane Emissions Inventories Using Facility Aerial Measurements at Midstream Natural Gas Facilities

Jenna A. Brown, Matthew R. Harrison, Tecle Rufael, Selina A. Roman-White, Gregory B. Ross, Fiji C. George, and Daniel Zimmerle

August 24 – Influence of soil-gas diffusivity on expansion of leaked underground natural gas plumes and application on simulation efforts

J.R.R. Navodi Jayarathne, Richard S. Kolodziej, Stuart N. Riddick, Daniel J. Zimmerle, Kathleen M. Smits

April 4 – Signing of the Methane Metrology Agreement

March 28 – Performance of continuous emission monitoring solutions under single-blind controlled testing protocol

Clay S. Bell, Chiemezie Ilonze, Aidan Duggan, and Daniel J. Zimmerle

Feb. 15 – Informing methane emissions inventories using facility aerial measurements at midstream natural gas facilities

Jenna Brown, Tecle Rufael, Matthew Harrison, Selina Roman-White, Gregory Ross, Fiji George, Daniel Zimmerle

Dec. 22 – Likely substantial underestimation of reported methane emissions from United Kingdom upstream oil and gas activities

Riddick, S. N. and Mauzerall, D. L.

Dec. 1 – Measurement of recreational N2O emissions from an urban environment in Manchester, UK

Barker, P. A. and Allen, G. Flynn, M., Riddick, S. N., and Pitt, J. R.

Nov. 22 – Investigating detection probability of mobile survey solutions for natural gas pipeline leaks under different atmospheric conditions

Shanru Tian, Stuart N. Riddick, Younki Cho, Clay S. Bell, Daniel J. Zimmerle, Kathleen M. Smits

Nov. 14 – Single-blind determination of methane detection limits and quantification accuracy using aircraft-based LiDAR

Clay Bell, Jeff Rutherford, Adam Brandt, Evan Sherwin, Timothy Vaughn, and Daniel Zimmerle

Nov. 2 – A quantitative comparison of methods used to measure smaller methane emissions typically observed from superannuated oil and gas infrastructure

Stuart N. Riddick, Riley Ancona, Mercy Mbua, Clay S. Bell, Aidan Duggan, Timothy L. Vaughn, Kristine Bennett, and Daniel J. Zimmerle

Sept. 29 – Estimating Regional Methane Emission Factors from Energy and Agricultural Sector Sources Using a Portable Measurement System: Case Study of the Denver–Julesburg Basin

Stuart N. Riddick, Fancy Cheptonui, Kexin Yuan, Mercy Mbua, Rachel Day, Timothy L. Vaughn, Aidan Duggan, Kristine E. Bennett and Daniel J. Zimmerle

Sept. 9 – For Leaks in Rain, Snow and Ice Conditions, Experiments Show Faster Gas Migration, Higher Gas Concentrations, and Continued Gas Migration Days after Leak was Stopped

Daniel Zimmerle, Kathleen Smits, Stuart Riddick

Sept. 7 – A closer look at underground natural gas pipeline leaks across the United States

Younki Cho, Kathleen M. Smits, Nathaniel L. Steadman, Bridget A. Ulrich, Clay S. Bell, and Daniel J. Zimmerle

Aug. 29 – Estimating methane emissions from underground natural gas pipelines using an atmospheric dispersion-based method

Shanru Tian, Kathleen M. Smits, Younki Cho, Stuart N. Riddick, Daniel J. Zimmerle, Aidan Duggan

July 22 – A Methane Emission Estimation Tool (MEET) for predictions of emissions from upstream oil and gas well sites with fine scale temporal and spatial resolution: Model structure and applications

David T. Allen, Felipe J. Cardoso-Saldana, Yosuke Kimura, Qining Chen, Zhanhong Xiang, Daniel Zimmerle, Clay Bell, Chris Lute, Jerry Duggan, Matthew Harrison

June 10 – Modeling air emissions from complex facilities at detailed temporal and spatial resolution: The Methane Emission Estimation Tool (MEET)

Daniel Zimmerle, Gerald Duggan, Timothy Vaughn, Clay Bell, Christopher Lute, Kristine Bennett, Yosuke Kimura, Felipe J. Cardoso-Saldaña, David T. Allen

May 27 – A cautionary report of calculating methane emissions using low-cost fence-line sensors

Stuart N. Riddick, Riley Ancona, Fancy Cheptonui, Clay S. Bell, Aidan Duggan, Kristine E. Bennett, Daniel J. Zimmerle

March 22 – Calibration and field deployment of low-cost sensor network to monitor underground pipeline leakage

Younki Cho, Kathleen M. Smits, Stuart N. Riddick, Daniel J. Zimmerle

April 26 – METEC controlled test protocol: survey emission detection and quantification

Clay Bell, Daniel Zimmerle

April 14 – Open-Source High Flow Sampler for Natural Gas Leak Quantification

Daniel Zimmerle, Timothy Vaughn, Kristine Bennett, Cody Ross, Matthew Harrison, Aaron Wilson, Chris Johnson

Feb. 22 – Quantitative comparison of methods used to estimate methane emissions from small point sources

Stuart N. Riddick, Riley Ancona, Clay Bell1, Aidan Duggan, Tim Vaughn, Kristine Bennett and Dan Zimmerle

Feb. 2 – Understanding Mid-to Large Underground Leaks from Buried Pipelines as Affected by Soil and Atmospheric Conditions – Field Scale Experimental Study

J. R. R. Navodi Jayarathne, Kathleen Smits, Stuart N. Riddick, Daniel J. Zimmerle, Younki Cho, Michelle Schwartz, Fancy Cheptonui, Kevan Cameron, Peter Ronney

Dec. 31 – Quantification of Methane Emissions from Marginal (Low Production Rate)  Oil and Natural Gas Wells

Dec. 21 – Modeling temporal variability in the surface expression above a methane leak: The ESCAPE model

Stuart N. Riddick, Clay S. Bell, Aidan Duggan, Timothy L. Vaughn, Kathleen M. Smits, Younki Cho, Kristine Bennett, and Daniel J. Zimmerle

Dec. – A Different Beast: New Tools for Regulators to Handle Next Generation Leak Detection for Oil and Gas

Daniel Zimmerle

Dec. – Methane detector network calibration and deployment for monitoring natural gas leaks from buried pipelines

Cho, Younki; Smits, Kathleen ; Riddick, Stuart ; Zimmerle, Daniel

July 7 – Study of methane migration in the shallow subsurface from a gas pipe leak

Bo Gao, Melissa K. Mitton, Clay Bell, Daniel Zimmerle, T. K. K. Chamindu Deepagoda, Arsineh Hecobian, Kathleen M. Smits

Jan. 7 – Methane Exhaust Measurements at Gathering Compressor Stations in the United States

Timothy L. Vaughn, Benjamin Luck, Laurie Williams, Anthony J. Marchese, and Daniel Zimmerle

2020

Dec – Estimating natural gas emissions from underground pipelines using surface concentration measurements

Younki Cho, Bridget A. Ulrich, Daniel J. Zimmerle, Kathleen M. Smits

Sept 22 – METEC controlled test protocol: continuous monitoring emission detection and quantification

Bell, Clay; Zimmerle, Daniel

Sept – Variability observed over time in methane emissions from abandoned oil and gas wells

Riddick, S. N., Mauzerall, D.L., Celia, M., Kang, M., and Bandilla K.

Aug 7 – Detection Limits of Optical Gas Imaging for Natural Gas Leak Detection in Realistic Controlled Conditions

Daniel Zimmerle, Timothy Vaughn, Clay Bell, Kristine Bennett, Parik Deshmukh, and Eben Thoma

July 20 – Evaluation of next generation emission measurement technologies under repeatable test protocols

Clay S. Bell, Timothy Vaughn, Daniel Zimmerle

June 1 – The calibration and deployment of a low-cost methane sensor

Riddick, S. N., Mauzerall, D.L., Celia, M., Allen, G., Pitt, J., Kang and M., Riddick, J.C.

May 14 – Methane Emissions from Gathering Compressor Stations in the U.S.

Daniel Zimmerle, Timothy Vaughn, Ben Luck, Terri Lauderdale, Kindal Keen, Matthew Harrison, Anthony Marchese, Laurie Williams, and David Allen

Jan 1 – Machine vision for natural gas methane emissions detection using an infrared camera

Jingfan Wanga, Lyne P. Tchapmib, Arvind P. Ravikumar, Mike McGuire, Clay S. Bell, Daniel Zimmerle, Silvio Savarese, Adam R. Brandt

2019

Oct – Characterization of methane emissions from gathering compressor stations: final report

Zimmerle, Daniel; Bennett, Kristine; Vaughn, Timothy; Luck, Ben; Lauderdale, Terri; Keen, Kindal; Harrison, Matthew; Marchese, Anthony; Williams, Laurie; Allen, David

Oct – Methane emissions from gathering and boosting compressor stations in the U.S. Supporting volume 3: Emission factors, station estimates, and national emissions

Daniel Zimmerle, Timothy Vaughn, Benjamin Luck, Terri Lauderdale, Kindal Keen, Matthew Harrison, Anthony Marchese, Laurie Williams, and David Allen

Sept 19 – Single-blind inter-comparison of methane detection technologies – results from the Stanford/EDF Mobile Monitoring Challenge

Arvind P. Ravikumar, Sindhu Sreedhara, Jingfan Wang, Jacob Englander, Daniel Roda-Stuart, Clay Bell, Daniel Zimmerle, David Lyon, Isabel Mogstad, Ben Ratner, Adam R. Brandt

Aug 19 – Methane emissions from oil and gas platforms in the North Sea 

6. Riddick, S. N., Mauzerall, D. L., Celia, M., Harris, N. R. P., Allen, G., Pitt, J., Staunton-Sykes, J., Forster, G. L., Kang, M., Lowry, D., Nisbet, E. G., and Manning, A. J.

Aug 15 – Constraining the Accuracy of Flux Estimates Using OTM 33A

Rachel Edie, Anna M. Robertson, Robert A. Field, Jeffrey Soltis, Dustin A. Snare, Daniel Zimmerle, Clay S. Bell, Timothy L. Vaughn, and Shane M. Murphy

July 19 – A methane emissions reduction equivalence framework for alternative leak detection and repair programs

Thomas A. Fox, Arvind P. Ravikumar, Chris H. Hugenholtz, Daniel Zimmerle, Thomas E. Barchyn, Matthew R. Johnson, David Lyon, Tim Taylor

June 27 – Natural Gas Emissions from Underground Pipelines and Implications for Leak Detection

Bridget A. Ulrich, Melissa Mitton, Emily Lachenmeyer, Arsineh Hecobian, Daniel Zimmerle, and Kathleen M. Smits

April 30 – Multiday Measurements of Pneumatic Controller Emissions Reveal the Frequency of Abnormal Emissions Behavior at Natural Gas Gathering Stations

Benjamin Luck, Daniel Zimmerle, Timothy Vaughn, Terri Lauderdale, Kindal Keen, Matthew Harrison, Anthony Marchese, Laurie Williams, and David Allen

April 5 – Methane source attribution in a U.S. dry gas basin using spatial patterns of ground and airborne ethane and methane measurements

Ingrid Mielke-Maday, Stefan Schwietzke, Tara I. Yacovitch, Benjamin Miller, Steve Conley, Jonathan Kofler, Philip Handley, Eryka Thorley, Scott C. Herndon, Bradley Hall, Ed Dlugokencky, Patricia Lang, Sonja Wolter, Eric Moglia, Molly Crotwell, Andrew Crotwell, Michael Rhodes, Duane Kitzis, Timothy Vaughn, Clay Bell, Dan Zimmerle, Russ Schnell and Gabrielle Pétron

Feb 15 – Measuring methane emissions from abandoned and active oil and gas wells in West Virginia

Riddick, S. N., Mauzerall, D., Celia, M., Bressler, K., Chu, C., Gum, C. and Kang, M.

2019

Automated Identification of Oil Field Features using CNNs

Sonu Dileep, Daniel Zimmerle, J Ross Beveridge, Timothy Vaughn

2018

Dec – Deep Learning to Classify Methane Leak Size At Oil and Gas Facilities

Wang, J. ; Ravikumar, A. P. ; Sreedhara, S. ; Tchapmi, L. P. ; McGuire, M. ; Bell, C. ; Zimmerle, D. ; Brandt, A. R.

Dec – Testing the Next Generation of Leak Detection and Quantification Technologies

Zimmerle, D. ; Bell, C. ; Vaughn, T. L.

Oct 29 – Temporal variability largely explains top-down/bottom-up difference in methane emission estimates from a natural gas production region

Timothy L. Vaughn, Clay S. Bell, Cody K. Pickering, and Dag Nummedal

Aug 17 – A measurement-based verification framework for UK greenhouse gas emissions: an overview of the Greenhouse gAs Uk and Global Emissions (GAUGE) project

Palmer, P., O’Doherty, S., et al.

June 21 – Improved characterization of methane emissions from the U.S. oil and gas supply chain

Ramon A. Alvarez, Daniel Zavala-Araiza, David R. Lyon, David T. Allen, Zachary R. Barkley, Adam R. Brandt, Kenneth J. Davis, Scott C. Herndon, Daniel J. Jacob, Anna Karion, Eric A. Kort, Brian K. Lamb, Thomas Lauvaux, Joannes D. Maasakkers, Anthony J. Marchese, Mark Omara, Stephen W. Pacala, Jeff Peischl, Allen L. Robinson, Paul B. Shepson, Colm Sweeney, Amy Townsend-Small, Steven C. Wofsy, Daniel Zimmerle, Steven P. Hamburg

March – Development of a low-maintenance measurement approach to continuously estimate methane emissions: A case study

12. Riddick, S. N., Hancock, B. R., Robinson, A. D., Connors, S., Davies, S., Allen, G., Pitt, J. and Harris, N. R. P.

Jan 19 – “Good versus Good Enough?” Empirical Tests of Methane Leak Detection Sensitivity of a Commercial Infrared Camera

Arvind P. Ravikumar , Jingfan Wang, Mike McGuire, Clay S. Bell, Daniel Zimmerle, and Adam R. Brandt

2017

Nov 24 – Comparing facility-level methane emission rate estimates at natural gas gathering and boosting stations

Timothy L. Vaughn, Clay S. Bell, Tara I. Yacovitch, Joseph R. Roscioli, Scott C. Herndon, Stephen Conley, Stefan Schwietzke, Garvin A. Heath, Gabrielle Pétron, Daniel Zimmerle

Nov 24 – Natural gas facility methane emissions: measurements by tracer flux ratio in two US natural gas producing basins

Tara I. Yacovitch, Conner Daube, Timothy L. Vaughn, Clay S. Bell, Joseph R. Roscioli, W. Berk Knighton, David D. Nelson, Daniel Zimmerle, Gabrielle Pétron, Scott C. Herndon

Nov 24 – Gathering pipeline methane emissions in Fayetteville shale pipelines and scoping guidelines for future pipeline measurement campaigns

Daniel J. Zimmerle, Cody K. Pickering, Clay S. Bell, Garvin A. Heath, Dag Nummedal, Gabrielle Pétron, Timothy L. Vaughn

Oct 25 – CH4 emission estimates from an active landfill site inferred from a combined approach of CFD modelling and in situ FTIR measurements

Sonderfeld, H., Bösch, H., Jeanjean, A. P. R., Riddick, S. N., et al.

July 20 – Comparison of methane emission estimates from multiple measurement techniques at natural gas production pads

Clay S. Bell, Timothy L. Vaughn, Daniel Zimmerle, Scott C. Herndon, Tara I. Yacovitch, Garvin A. Heath, Gabrielle Pétron, Rachel Edie, Robert A. Field, Shane M. Murphy, Anna M. Robertson, Jeffrey Soltis

June 19 – Variation in Methane Emission Rates from Well Pads in Four Oil and Gas Basins with Contrasting Production Volumes and Compositions

Anna M. Robertson, Rachel Edie, Dustin Snare, Jeffrey Soltis, Robert A. Field, Matthew D. Burkhart, Clay S. Bell, Daniel Zimmerle, and Shane M. Murphy

June 17 – Estimating the size of a methane emission point source at different scales: from local to landscape

Riddick, S. N., Connors, S., Robinson, A. D., Manning A., Jones, P. S. D., Lowry, D., Nisbet, E.G., Skelton, R. L., Allen, G., Pitt, J. and Harris, N. R. P.

May 26 – Improved Mechanistic Understanding of Natural Gas Methane Emissions from Spatially Resolved Aircraft Measurements

Stefan Schwietzke, Gabrielle Pétron, Stephen Conley, Cody Pickering, Ingrid Mielke-Maday, Edward J. Dlugokencky, Pieter P. Tans, Tim Vaughn, Clay Bell, Daniel Zimmerle, Sonja Wolter, Clark W. King, Allen B. White, Timothy Coleman, Laura Bianco, and Russell C. Schnell

Jan 16 – Super-emitters in natural gas infrastructure are caused by abnormal process conditions

Daniel Zavala-Araiza, Ramón A Alvarez, David R. Lyon, David T. Allen, Anthony J. Marchese, Daniel J. Zimmerle & Steven P. Hamburg

2016

Dec 7 – Mid-continent basin – methane emissions reconciliation: facility level emissions

Daniel Zimmerle

2015

Dec 7 – Reconciling divergent estimates of oil and gas methane emissions

Daniel Zavala-Araiza, David R. Lyon, Ramón A. Alvarez, and Steven P. Hamburg

Aug 18 – Methane Emissions from United States Natural Gas Gathering and Processing

Anthony J. Marchese, Timothy L. Vaughn, Daniel J. Zimmerle, David M. Martinez, Laurie L. Williams, Allen L. Robinson, Austin L. Mitchell, R. Subramanian, Daniel S. Tkacik, Joseph R. Roscioli, and Scott C. Herndon

July 21 – Methane Emissions from the Natural Gas Transmission and Storage System in the United States

Daniel J. Zimmerle, Laurie L. Williams, Timothy L. Vaughn, Casey Quinn, R. Subramanian, Gerald P. Duggan, Bryan Willson, Jean D. Opsomer, Anthony J. Marchese, David M. Martinez, and Allen L. Robinson

July 7 – Constructing a Spatially Resolved Methane Emission Inventory for the Barnett Shale Region

David R. Lyon, Daniel Zavala-Araiza, Ramon A. Alvarez, Robert Harriss, Virginia Palacios, Xin Lan, Robert Talbot, Tegan Lavoie, Paul Shepson, Tara I. Yacovitch, Scott C. Herndon, Anthony J. Marchese, Daniel Zimmerle, Allen L. Robinson, and Steven P. Hamburg

May 7 – Measurements of methane emissions from natural gas gathering facilities and processing plants: measurement methods

J. R. Roscioli, T.I. Yacovitch, C. Floerchinger, A. L. Mitchell, D.S. Tkacik, R. Subramanian, D. M. Martinez, T.L. Vaughn, L. Williams, D. Zimmerle, A.L. Robinson, S.C. Herndon, and A.J. Marchese

Feb 10 – Methane Emissions from Natural Gas Compressor Stations in the Transmission and Storage Sector: Measurements and Comparisons with the EPA Greenhouse Gas Reporting Program Protocol

R. Subramanian, Laurie L. Williams, Timothy L. Vaughn, Daniel Zimmerle, Joseph R. Roscioli, Scott C. Herndon, Tara I. Yacovitch, Cody Floerchinger, Daniel S. Tkacik, Austin L. Mitchell, Melissa R. Sullivan, Timothy R. Dallmann, and Allen L. Robinson

Feb 10 – Measurements of Methane Emissions from Natural Gas Gathering Facilities and Processing Plants: Measurement Results

Austin L. Mitchell, Daniel S. Tkacik, Joseph R. Roscioli, Scott C. Herndon, Tara I. Yacovitch, David M. Martinez, Timothy L. Vaughn, Laurie L. Williams, Melissa R. Sullivan, Cody Floerchinger, Mark Omara, R. Subramanian, Daniel Zimmerle, Anthony J. Marchese, and Allen L. Robinson

2012

Moving Towards Improved Basin-level Oil and Gas Inventories and Reconciliation with Measurements

Amnon Bar-Ilan, John Grant, Rajashi Parikh, Ralph Morris, Garvin Heath, Viktor Diakov, Dan Zimmerle, Lee Gribovicz

Measurement Analysis of GC-FID Methane Network in East Anglia

Sarah Connors, Neil Harris, Andrew Robinson, Stuart Riddick, Alistair Manning

2010

Dec 22 – Flare Gas Utilization at Combined Oil-Gas Well Sites

Casey Quinn, Daniel Zimmerle, Daniel B. Olsen