U. S. Climate Alliance Secretariat

Executive Director

Julie Cerqueira.jpg

Julie Cerqueira joins the U.S. Climate Alliance as its inaugural Executive Director, where she will be helping to advance the climate and clean energy policy priorities of the Alliance’s Governors and their offices.  Ms. Cerqueira most recently served as a Senior Advisor to the Special Envoy for Climate Change, later joining the Office of Global Change, both with the U.S. Department of State.  In this role, she led U.S. engagement in strategic partnerships, such as the Climate and Clean Air Coalition, helped launch high profile climate deliverables for North America and the U.S. Chairmanship of the Arctic Council, and led the Department’s engagement with sub-national governments on climate change, amongst other priorities.  Prior to her work in the federal government, Ms. Cerqueira worked with developing countries on designing and implementing sectoral climate policies at a climate think tank, and spent four years in Southeast Asia working with local communities, governments and the private sector on environmental projects and promoting policy reforms.

Senior associate


Kristin Igusky is a Senior Associate with the U.S. Climate Alliance, where she supports the Alliance’s policy research and analysis, communications, strategy development, and coordination functions.  Ms. Igusky most recently served as an Associate with the U.S. Climate Initiative at the World Resources Institute.  In this role, she led research and analysis of clean energy and climate policies at the state, federal, and local levels. This included identifying how states can meet their Clean Power Plan targets, tracking U.S. progress towards its 2020 and 2025 emissions reduction goals, and developing analytical approaches to aggregate the sectoral impact of state, city and corporate climate and energy actions. Prior to her work at WRI, Ms. Igusky worked on SAIC’s Climate Change Services team where she focused on a wide-range of GHG management projects for federal government agencies, local governments, and private sector entities.



Claire Jahns is a Senior Advisor to U.S. Climate Alliance, with a focus on advancing the Natural and Working Lands Initiative and supporting states in achieving the goals of the Natural and Working Lands Challenge. Ms. Jahns most recently served as Assistant Secretary for Climate Issues at the California Natural Resources Agency under Governor Edmund G. Brown. In this role, she led development of California’s Natural and Working Lands Strategy and adoption of California’s first statewide quantitative targets for GHG emissions reductions derived from natural climate solutions. Prior to her work with the State of California, Ms. Jahns she served as a project director at The Nature Conservancy, where she worked with landowners, public officials, and other partners to develop solutions at the intersection of agriculture and biodiversity conservation in California and the American West. Claire was an economist and business development associate at the Chicago Climate Exchange from the Exchange’s opening in 2003 to 2007.


Aviela Hochberg is a State Climate Policy intern with the U.S Climate Alliance. She recently earned her Master’s in Nature, Society and Environmental Governance from the University of Oxford. She also earned a B.A in Political Science from Bryn Mawr College, and studied Environmental law and policy at the London School of Economics and Political Science. For her master’s thesis she examined how the relationship between storm experience and political identities influences public perceptions towards wave and tidal renewable technologies in New Jersey. When Aviela is not doing climate policy research, she is helping her family with their lavender farm.

Steve Tebbe is a State Climate Policy Intern with the U.S. Climate Alliance. He is a second-year graduate student pursuing a Master of Science in Foreign Service at Georgetown University, where he concentrates on Global Politics & Security and climate change diplomacy in particular.  Steve graduated from Dartmouth College with a Bachelor of Arts in Geography and Anthropology and has previously lived in France, Nepal, New Zealand, and South Africa.

Additional Support By

The William + Flora Hewlett Foundation

Energy Foundation

Doris Duke Charitable Foundation


Secretariat housed at

The United Nations Foundation