Our climate experts

  • Pereira, Andrea
    Manager, Corporate Climate Leadership

    Areas of expertise: Policy advocacy, partnerships, corporate sustainability and social responsibility

  • Piris-Cabezas, Pedro
    Senior Director, Global Transportation / Lead Senior Economist

    Areas of expertise: E.U. and global climate and energy policy, REDD+, aviation emissions, sustainable biofuels and the design of cap-and-trade programs.

  • Pottens, Ari
    Senior Campaign Manager, Canada

    Areas of expertise: Canadian climate policy and advocacy, Methane emissions from the oil and gas sector, Transition away from fossil fuels

  • Proville, Jeremy
    Senior Director, Economics

    Areas of expertise: Climate change, GIS, data visualization, remote sensing, land use change, environmental markets

  • Ramirez Ballagas, Rohemir
    Director, Shipping and Transport

    Areas of expertise: Decarbonization of international shipping, aviation emissions, carbon markets

  • Roedner Sutter, Katelyn
    California State Director

    Areas of expertise: California climate policy, environmental justice, cap and trade, air quality, land use & transportation policy.

  • Rogers, Grace
    Manager, Climate Resilient Coasts and Watersheds

    Areas of expertise: Water resources management and policy, science-based decision-making, natural infrastructure, ecosystems, social sciences, stakeholder coordination

  • Rote, Morgan
    Senior Policy Director, Fuels and Feedstocks

    Areas of expertise: U.S. climate policy, carbon markets, renewable energy, climate adaptation, economic analysis, behavioral economics

  • Rutecki, John
    Regulatory and Legislative Manager, Appalachia

    Areas of expertise: State and federal energy policy, climate policy

  • Sánchez, Sergio
    Senior Policy Director, Global Clean Air

    Areas of expertise: Climate and clean air policy, international development, integrated environmental management systems, comprehensive air quality management, sustainable transport, United Nations

  • Saunders, Nichole
    Director and Senior Attorney, Energy Transition

    Areas of expertise: carbon management; hydrogen; industrial hubs; oil and gas policy; produced water

  • Schneer, Katie
    Senior Analyst, U.S. Climate

    Areas of expertise: U.S. climate policy, carbon markets, legislative and regulatory strategy, data analysis

  • Schwartzman, Steve
    Senior Director, Tropical Forest Policy

    Areas of expertise: Climate change, tropical forest policy, Reducing Emissions from Deforestation and forest Degradation (REDD), Brazil and the Amazon, Indigenous Peoples, incentives for environmental protection

  • Schwietzke, Stefan
    International Senior Scientist

    Areas of expertise: Methane emissions, atmospheric measurements, local and global emissions inventories

  • Scott, Will
    Southeast Climate & Clean Energy Director

    Areas of expertise: clean energy and transportation electrification

  • Seong, Joon
    Energy Decarbonization Analyst

    Areas of expertise: Energy policy, Utility policy, Decarbonization

  • Seymour, Scott
    Senior Research Analyst, Canadian Methane Emissions

    Areas of expertise: Laser-based gas detection, laser sensor development, inventory analysis, field work, methane, black carbon

  • Shenette, Ellen
    Director, Net Zero Action Accelerator

    Areas of expertise: Corporate partnerships, Net Zero, energy efficiency, renewable energy, sustainability strategy

  • Shigetomi, Lindsay
    Senior Manager, Fleet Engagement

    Areas of expertise: Fleet electrification, financial modeling, clean transportation policy

  • Smith, Grace
    Senior Attorney, U.S. Legal & Regulatory

    Areas of expertise: Federal environmental and energy regulation, oil and gas standards, greenhouse gas mitigation