Research Collaborations
- Our Work
- Programs
- Indoor Air Quality
- Air Cleaners & Ozone Products
- CARB's Statewide Greenhouse Gas Monitoring Network
- California Climate Investments
- Carl Moyer Memorial Air Quality Standards Attainment Program
- Community Air Protection Program
- Exposure
- FARMER Program
- HFC Reduction Measures
- Mandatory Greenhouse Gas Emissions Reporting
- Outdoor Air Quality Standards
- People at Risk
- Advanced Clean Trucks
- Research Planning
- Vapor Recovery
- Zero-Emission Forklifts Summary Fact Sheet
- Zero-Emission Powertrain Certification
- AB 32 COI Fee Regulation
- Clean Off-Road Equipment Voucher Incentive Project (CORE)
- Innovative Technology Regulation
- Community Air Protection Program Training
- Inspection and Maintenance Program
- AB 2588 Air Toxics "Hot Spots"
- AB 32 Climate Change Scoping Plan
- AB 617 Budget
- ATCM to Limit Vehicle Idling
- Abrasive Blasting Program
- Access Clean California
- Accessible Clean Transportation Options SB 350
- Adult Education & Vocational School Zero-Emission Vehicle Technology Training Project
- Advanced Clean Cars Program
- Advanced Clean Fleets
- Advanced Technology Demonstration and Pilot Projects
- Aftermarket, Performance, and Add-on Parts
- Agricultural Burning
- Air Quality Training
- Air Resources Board Equipment Registration (ARBER) System
- Air Toxics Listening Session Series
- Air Toxics Program
- Aliso Canyon Natural Gas Leak
- Alternative Diesel Fuels
- Alternative Fuels
- Ambient Air Monitoring - Regulatory
- Asbestos NESHAP Program
- Building Decarbonization
- CARB’s Certified Regulatory Program, Implementing the California Environmental Quality Act (CEQA)
- California E-bike Incentive Project
- California Greenhouse Gas Emission Inventory Program
- California Racing Vehicles
- California Significant New Alternatives Policy (SNAP)
- California State Implementation Plans
- California Tropical Forest Standard
- California's Methane Research Program
- Cap-and-Trade Program
- Carbon Capture & Sequestration
- Carbon Neutrality
- Cargo Handling Equipment
- Cargo Tank Vapor Recovery
- Clean Cars 4 All
- Clean Miles Standard
- Clean Mobility Options Voucher Pilot Program (CMO)
- Clean Mobility in Schools
- Clean Power Plan
- Clean Truck & Bus Vouchers (HVIP)
- Clean Vehicle Rebate Project (CVRP)
- Climate Heat Impact Response Program (CHIRP)
- Coatings
- Commercial Harbor Craft
- Community Air Protection Incentives
- Community Outreach and Enforcement
- Compliance Offset Program
- Composite Wood Enforcement
- Composite Wood Products Program
- Consumer Products Enforcement
- Consumer Products Program
- Criteria and Toxics Reporting
- Dairy and Livestock Working Group
- Diesel Enforcement
- Diesel Fuel
- Distributed Generation
- Drayage Trucks at Seaports & Railyards
- Driving Clean Assistance Program
- Electricity Transmission and Distribution GHG Emissions
- Enforcement Division Employment
- Enforcement Policy & Reports
- Enhanced Fleet Modernization Program (EFMP)
- Environmental Tobacco Smoke
- Equipment and Process Precertification Program (Stationary Sources Only)
- F-gas Reduction Incentive Program
- Federal Clean Air Act- Title V Operating Permits
- Fleet Rule for Public Agencies and Utilities
- Fuels Enforcment Program
- Fuels Multimedia Evaluation
- Fuels Program
- Gasoline
- Greenhouse Gas Standards for Medium- and Heavy-Duty Engines and Vehicles
- HD Hybrid Electric Vehicle Certification Procedures
- HVIP Public School Bus Set-Aside
- Haagen-Smit Clean Air Awards
- Heavy-Duty Diesel Inspection & Periodic Smoke Inspection Program
- Heavy-Duty Greenhouse Gas Certification Program
- Heavy-Duty Low NOx
- Idle Reduction Technologies
- In-Use Off-Road Diesel-Fueled Fleets Regulation
- In-Use Off-Road Mobile Agricultural Equipment
- Incident Air Monitoring
- Independent Contractor Program
- Indoor Air Cleaner Enforcement
- Innovative Clean Transit
- Innovative Small e-Fleet Pilot Program
- Introduction to Community Air Quality
- Landfill Methane Regulation
- Landfills: CA State Plan
- Large Spark-Ignition (LSI) Engine Fleet Requirements Regulation
- Local Actions for Climate Change
- Low Carbon Fuel Standard
- MSEI
- Medium- and Heavy-Duty Fleet Zero-Emission Vehicle Purchasing Support
- Meetings & Workshops
- Methane Research Projects
- Natural Gas Transmission and Distribution
- Natural and Working Lands
- Net-Zero Emissions Strategy for the Cement Sector
- New Source Review Permitting Programs
- OBD - On-Board Diagnostic Program
- Ocean-Going Vessels At Berth Regulation
- Off-Highway Recreational Vehicles
- Off-Road Compression-Ignition Certification Program
- Oil and Natural Gas Production, Processing, and Storage
- On-Road Heavy-Duty Certification Program
- On-Road Motorcycles
- Optional Reduced NOx Standards
- Outboard Marine Tanks
- Outdoor Residential Waste Burning
- Overpressure
- Phase Out of Perchloroethlyene from the Dry Cleaning Process
- Phased Advanced Clean Equipment (PACE) Regulation
- Planning and Capacity Building
- Portable Equipment Registration Program (PERP)
- Portable Fuel Containers - Gas Cans
- Pre-Approved Aero Devices
- Prescribed Burning
- Protect California Air Act of 2003 - Senate Bill 288
- Public Safety Power Shutoff (PSPS) Events
- Public Safety Power Shutoff (PSPS) Events
- Quality Assurance
- Reducing Rail Emissions in California
- Refrigerant Management Program
- Renewables Portfolio Standard
- Residential Woodsmoke Reduction
- Rural School Bus Pilot Project
- SB 1075 Report: Hydrogen Development, Deployment, and Use
- SB 350 Electricity Sector Greenhouse Gas Planning Targets
- San Diego Program Review
- San Joaquin Valley Emission Reduction Credit Program Review
- School Buses
- Semiconductor
- Short-Lived Climate Pollutants
- Small Off-Road Engines (SORE)
- Solid Waste Collection Vehicle Regulation
- Spark-Ignition Marine Watercraft
- State and Federal Area Designations
- Stationary Fuel Cell Net Energy Metering
- Stationary
- Study of Neighborhood Air near Petroleum Sources
- Supplemental Environmental Projects (SEPs)
- Sustainable Communities Program
- Sustainable Freight Transport
- Sustainable Transportation Equity Project (STEP)
- TTGHG Regulation
- Targeted Enforcement Administrative Modifications (TEAMs) Rulemaking
- Technology Clearinghouse
- Tier 5
- Tractor-Trailer Greenhouse Gas (TTGHG) Aero Device Approval Program
- Transport Refrigeration Unit
- Truck & Bus Regulation
- Truck Loan Assistance Program
- Truck and Bus Surveillance Program
- TruckStop Resources
- Variance Oversight Program
- Volkswagen ZEV Investment Commitment
- Wildfire Smoke Clean Air Center Grant
- Wildfires
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- Zero-Emission Aircraft Ground Operations
- Zero-Emission Airport Ground Support Equipment
- Zero-Emission Airport Shuttle
- Zero-Emission Landscaping Equipment
- Zero-Emission Truck Loan Pilot Project
- Expedited BARCT Schedules
- Methane Hotspots (AB 1496)
- Soil Emissions from California Lands
- Strategy Development
- Criteria Pollutant and Toxics Emissions Reporting
- Research Collaborations
- Technical Assistance
- CA Phase 2 GHG Trailer Certification
- Community Air Grants
- Greenhouse Gas Inventory
- Community Air Protection Program
- SB 1206
- Small Containers of Automotive Refrigerant
- Low Carbon Transportation Incentives and Air Quality Improvement Program
- Volkswagen Environmental Mitigation Trust for California
- Lower-Emission School Bus Program
- Topics
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Contact
Research Partners
In order to maximize the extent of the project and to better understand the statewide inventory, CARB is also collaborating with other researchers to expand the coverage of the GHG measurement network in California. Analytical and measurement collaborators include Megacities Carbon Project, Lawrence Berkeley National Laboratory, National Oceanic and Atmospheric Administration, Lawrence Livermore National Laboratory, University of San Diego, California Institute of Technology, and Jet Propulsion Laboratory (Los Angeles). Some of our key collaborators are shown in the figure below.
GHG Research Contracts
CARB also sponsors extramural research contracts and collaborations to answer critical GHG research and policy questions using the state-mandated Annual Research Program. Over the years, this effort has focused on a variety of source sectors including dairies, oil and gas, natural gas pipelines, waste sector, and many other subjects, and have important contribution to the state of science, ranging from studying sectoral emissions at the facility as well as process levels, to evaluating the inventory from both a top-down and bottom-up perspective. In addition, our collaborations with CEC, CalRecycle, CDFA, and other sister agencies have provided critical support both for planning, policy making, research, as well as for improving our understanding of the source sectors and mitigation. For instance, CARB has ongoing coordinated research efforts with the CEC to study the energy sector, and these have tremendously enhanced the measurement and evaluation of methane emission from the sector and improved the statewide emissions inventory. The following projects depict a subset of CARB-funded projects that focused on GHG monitoring, and either directly utilized the data generated by the research network or collected new monitoring data to study greenhouse gas emissions in California:
- ARCTAS-Mount Wilson GHG Monitoring “Proof of Concept” Gas Sampling and Analysis Service Contract (06-338) – Donald Blake (UCI)
- Determination of the spatial distribution of ozone precursor and greenhouse gas concentrations and emissions on the LA-Basin (09-318) - Jochen Stutz, Qinlin Li, Stan Sander (UCLA)
- Inverse modeling to verify California's greenhouse gas emission inventory (09-348) – Marc Fischer (CSU-East Bay)
- Synthesis of policy relevant findings from the Calnex 2010 field study (10-326) – David Parrish and Joost de Gouw (NOAA)
- Atmospheric measurement and inverse modeling to improve greenhouse gas emission estimates (11-306) – Marc Fischer (LBNL)
- Mount Wilson GHG Monitoring Gas Sampling and Analysis (13-320) – Donald Blake (UCI)
- Data Supporting GHG Emission Estimates in the South Coast Air Basin (13-329) – Yuk L. Yung (Caltech)
- Greenhouse gas measurements at Walnut Grove Tower (15-302) – Marc Fischer (UC Davis)
GHG Research Papers
- Papers from the CalNEX campaigns
- Hsu, Y.K., VanCuren, T., Park, S., Jakober, C., Herner, J., FitzGibbon, M., Blake, D.R. and Parrish, D.D., 2010. Methane emissions inventory verification in southern California. Atmospheric Environment, 44(1), pp.1-7
- Gorham, K.A., Blake, N.J., VanCuren, R.A., Fuelberg, H.E., Meinardi, S. and Blake, D.R., 2010. Seasonal and diurnal measurements of carbon monoxide and nonmethane hydrocarbons at Mt. Wilson, California: Indirect evidence of atomic Cl in the Los Angeles basin. Atmospheric Environment, 44(19), pp.2271-2279
- Wennberg, P.O., Mui, W., Wunch, D., Kort, E.A., Blake, D.R., Atlas, E.L., Santoni, G.W., Wofsy, S.C., Diskin, G.S., Jeong, S. and Fischer, M.L., 2012. On the sources of methane to the Los Angeles atmosphere. Environmental science & technology, 46(17), pp.9282-9289
- Jeong, S., Y.-K. Hsu, A. E. Andrews, L. Bianco, P. Vaca, J. M. Wilczak, and M. L. Fischer, 2013. A multitower measurement network estimate of California's methane emissions, J. Geophys. Res. Atmos., 118, doi
- Gallagher, G., Zhan, T., Hsu, Y.K., Gupta, P., Pederson, J., Croes, B., Blake, D.R., Barletta, B., Meinardi, S., Ashford, P. and Vetter, A., 2014. High-Global Warming Potential F-gas Emissions in California: Comparison of Ambient-Based versus Inventory-Based Emission Estimates, and Implications of Refined Estimates. Environmental science& technology, 48(2), pp.1084-1093
- Wong, K.W., Fu, D., Pongetti,T.J., Newman, S., Kort, E.A., Duren, R., Hsu, Y.K., Miller, C.E., Yung, Y.L. and Sander, S.P., 2015. Mapping CH 4: CO 2 ratios in Los Angeles with CLARS-FTS from Mount Wilson, California. Atmospheric Chemistry and Physics, 15(1), pp.241-252
- Newman, S., Xu, X., Gurney, K.R., Hsu, Y. K., Li, K. F., Jiang, X., Keeling, R., Feng, S., O'Keefe, D., Patarasuk, R., Wong, K. W., Rao, P., Fischer, M. L., and Yung, Y. L.: Toward consistency between trends in bottom-up CO2 emissions and top-down atmospheric measurements in the Los Angeles megacity, Atmos. Chem. Phys., 16, 3843-3863, doi:10.5194/acp-16-3843-2016, 2016
- Kuwayama, T., Charrier-Klobas, J.G., Chen, Y., Vizenor, N.M., Blake, D.R., Pongetti, T., Conley, S.A., Sander, S.P., Croes, B., Herner, J.D.: Source Apportionment of Ambient Methane Enhancements in Los Angeles, California, To Evaluate Emission Inventory Estimates. Environmental Science & Technology 53, 2961-2970, 2019
- Cui, Y. Y., Vijayan A., Falk M., Hsu Y. K., Yin D., Chen X., Zhao Z., Avise J., Chen Y., Verhulst K., Duren R. M., Yadav V., Miller C. E., Weiss R. F., Keeling R., Kim J., Iraci L. T., Tanaka T., Johnson M. S., Kort E. A., Bianco L., FIscher M. L., Stroud K., Herner J., and Croes B.: A multiplatform inversion estimation of statewide and regional methane emissions in California during 2014-2016, Environmental Science & Technology 53, 9636-9645, 2019
- Duren, R.M., Thorpe, A.K., Foster, K.T., Rafiq, T., Hopkins, F.M., Yadav, V., Bue, B.D., Thompson, D.R., Conley, S., Colombi, N.K., Frankenberg, C., McCubbin, I.B., Eastwood, M.L., Falk, M., Herner, J.D., Croes, B.E., Green, R.O., Miller, C.E.: California’s methane super-emitters. Nature 575, 180-184, 2019