Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

CO2 Urban Synthesis and Analysis (USA) Network Workshop

CO2-Urban Synthesis & Analysis “USA” Network Workshop
Purpose: Launch a collaborative network of researcher and stakeholders facilitating collaboration and information exchange concerning best practices and approaches to urban greenhouse gas measurements, data, and estimation results.

Planning Team: John Lin, Lucy Hutyra, James Whetstone, & Tamae Wong


  1. Scientists leading urban-scale CO2 & CH4 flux measurements using bottom-up and topdown methods;
  2. Regulators and policymakers interested in integrating scientific observations into their greenhouse gas reporting systems;

Project Summary: Cities have emerged as leaders in US efforts to reduce greenhouse gas emissions, but the scientific knowledge to quantitatively track emissions and assess the efficacy of mitigation is lacking. As the global population increasingly resides in urban regions, scientific knowledge about how much, where, and why a particular city emits carbon becomes increasingly important. This workshop launches a collaborative network to exchange information on community standards and common measurements, facilitate data sharing, and create analysis frameworks and cross-city syntheses to catalyze a new generation of researchers and enable new collaborations tackling important objectives that are difficult to address in isolation. Specifically, this synthesis effort seeks to:

  • Quantify & understand similarities/differences in CO2 and CH4 fluxes across cities;
  • Develop harmonized CO2 and CH4 mixing ratio datasets that are readily useable, traceable, and accessible by the research community and the public;
  • Construct an atmospheric modeling system that is scalable and transferable between cities;
  • Compare & understand similarities/differences between anthropogenic emission inventories;
  • Improve estimates of biospheric fluxes across cities;
  • Foster a community of urban carbon cycle researchers and generate collaborative studies;
  • Engage stakeholders to link them with data, syntheses, and insights into urban emissions.

Objectives of CO2-USA Workshop (November 2017):

  1. Build bridges and collaborations with stakeholders
  2. Exchange of information between researchers in different cities
  3. Start building a cross-city merged GHG dataset
  4. Understanding and quantifying uncertainties in atmospheric inversions
  5. Build and share harmonized prior flux fields (biological and fossil)
  6. Foster community of urban GHG researchers

Getting to NIST Gaithersburg

Parking and Getting Around - Gaithersburg

Handout Material for the Meeting

Summary Table (PDF)

Workshop Description (PDF)

Workshop Agenda (PDF)

Full Agenda (Printable PDF)

Monday, November 6, 2017 -  8:30am – 5:00pm

8:30~8:40     Welcome, Introduction [John Lin, Lucy Hutyra] 

8:40~8:50     NOAA Perspective [Monika Kopacz, Ken Mooney]

8:50~9:00     NIST Perspective [James Whetstone]

9:00~9:20     Summary of assets in different cities [Kim Mueller]

9:20~9:40      Report from bottom-up inventory workshop [Kevin Gurney]

9:40~10:00   Coffee

10:00~10:20       EPA greenhouse gas inventory development [Vince Camobreco]

10:20~10:40       Sample inventory engagement:  Darte, ACES, and stakeholder engagement in New England [Conor Gately]

10:40~11:00       Biospheric inventory development for cities [Lucy Hutyra]

11:00~11:30        Inventory panel discussion [Gurney, Camobreco, Gately, Hutyra]

11:30~12:15       Stakeholder Mapping [Katherine Lusk]

12:15~13:30       Lunch – NIST Cafeteria

13:30-14:15        City Guest Speaker: Climate and Sustainability Analyst, San Francisco Department of the Environment [Brian Reyes]

14:15-14:30        Coffee

14:30-15:15        Private Sector Guest Speaker: Principal & Director of Cities and Sustainable Real Estate, Arup [Brian Swett]

15:15~15:45       World Meteorological Organization Effort:  The Integrated Global Greenhouse Gas Information System (IG3IS) [Felix Vogel, Phil DeCola]

15:45-17:00        Discussion: City-Level Engagement

18:00              Group Dinner

Tuesday, November 7, 2017 - 8:30am – 4:00pm

8:30~9:15            Atmospheric Modeling [Ariel Stein, Chris Loughner, John Lin]

9:15~9:30               Atmospheric inter-comparison effort from The Integrated Global Greenhouse Gas Information System (IG3IS) [Thomas Lauvaux]

9:30 ~10:15          GHG Data Synthesis [Steve Wofsy]

10:15~10:35       Coffee Break

10:35~11:20       GHG-Air Quality Synergies [Russ Dickerson]

11:20~12:15       Discussion: What is Needed to Synthesize Activities between Different Cities [ALL]

12:15~13:30       Lunch – NIST Cafeteria

13:30~14:15       Complementary Measurements [John Miller]

14:15~14:30        Coffee

14:30~15:00       NIST Data Registry [Gretchen Greene]

15:00~16:00       Discussion:  Homework, Deliverables, Initial Papers [ALL, led by Logan Mitchell & Conor Gately]


Please note: The Hilton Hotel block is now full. You may call the Holiday Inn - Gaithersburg, for individual reservations at 301-948-8900.

Hilton (FULL)
620 Perry Parkway, Gaithersburg, MD 20877
(P) 301-977-8900 (F) 301-977-3450
Hotel Block is $201 per night.  
Book you room now >>>>

The hotel will provide shuttle service, to and from the NIST campus and includes a full breakfast.

If you are not registered, you will not be allowed on site. Registered attendees will receive security and campus instructions prior to the workshop.

NON U.S. CITIZENS PLEASE NOTE: All foreign national visitors who do not have permanent resident status and who wish to register for the above meeting must supply additional information. Failure to provide this information prior to arrival will result, at a minimum, in significant delays in entering the facility. Authority to gather this information is derived from United States Department of Commerce Department Administrative Order (DAO) number 207-12. The required NIST-1260 form will be available during registration. *New Visitor Access Requirement: Effective July 21, 2014, Under the REAL ID Act of 2005, agencies, including NIST, can only accept a state-issued driver’s license or identification card for access to federal facilities if issued by states that are REAL ID compliant or have an extension. For further details, please visit:

Created August 10, 2017, Updated November 3, 2017