Meet Our

Team

Nigel Purvis

CEO

Nigel Purvis

Nigel Purvis is an American diplomat, business and non-profit executive, think tank scholar and international lawyer. Over three decades, Nigel has shaped U.S. and global policy while serving in decision-making roles at a wide variety of globally influential organizations in Washington, DC.
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Rosaria Leong

Chief Financial Officer

Rosaria Leong

Rosaria Leong, as Chief Financial & Administrative Officer (CFAO) at Climate Advisers, is responsible for the company’s financial functions, including corporate finance, treasury, accounting, and audit, and oversees human resources.
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Ben Simonds

Senior Managing Director, Communications

Ben Simonds

Ben Simonds is a Senior Managing Director at Climate Advisers and serves as the group’s Director of Communications, where he designs and executes CA’s communications strategies and is working to grow its communications consulting practice.
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Matt Piotrowski

Senior Director & Policy Team Lead

Matt Piotrowski

Matt Piotrowski is a Senior Director and the Policy Team Lead at Climate Advisers, focusing on trade and other policy research, communication outreach with the financial sector, and providing analysis for investors to mitigate climate risks.
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Natasha Ferrari

Senior Director, Communications

Natasha Ferrari

Natasha is a Senior Director of Communications at Climate Advisers. She is helping lead the company’s growing communications practice, which combines strategic communications with deep expertise on climate change issues.
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Niamh McCarthy

Senior Director of Climate-Related Risk and Orbitas

Niamh McCarthy

Niamh McCarthy is Senior Director of Climate-Related Risk at Climate Advisers and leads the Orbitas initiative, where she specializes in financial transparency, data analytics, and sustainability.
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Simone Schonenberger

Director, Human Resources

Simone Schonenberger

Simone Schonenberger is the Director of Human Resources at Climate Advisers, where she oversees all aspects of the group's most valuable assets, its people.
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Kyle Saukas

Director, Communications

Kyle Saukas

Kyle Saukas is a Director of Communications at Climate Advisers, where he focuses on executing strategic communications projects and strengthening the Climate Advisers brand.
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Nitya Aggarwal

Senior Associate, Policy & Communications

Nitya Aggarwal

Nitya Aggarwal is a Senior Associate, Policy and Communications where she works closely with both the Policy & Research and Communications teams.
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Claire Langley

Senior Fellow, Diplomacy & Policy

Claire Langley

Claire Langley is a Senior Fellow of Diplomacy & Policy at Climate Advisers. Claire’s expertise includes international climate & energy policy and diplomacy strategy.
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Jen Stebbing

Senior Fellow, Communications

Jen Stebbing

Jen Stebbing is a Senior Fellow at Climate Advisers where she offers support and strategic advice to the communications team.
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Michael Obersteiner

Senior Fellow, Orbitas

Michael Obersteiner

Michael is a Senior Fellow at Climate Advisers and Orbitas, and is the Director of the Environmental Change Institute, University of Oxford.
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Alexandre Koberle

Senior Fellow, Orbitas

Alexandre Koberle

Dr Alexandre Köberle is a Senior Fellow at Climate Advisers and Orbitas where he focuses on long-term scenarios of socio-environmental change,
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Mark Kenber

Senior Fellow, Orbitas

Mark Kenber

Mark Kenber is a Senior Fellow at Climate Advisers where he leads the project Orbitas. Mark has worked on environment, climate and energy issues for over two decades, in government, NGOs and the private sector.
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Dan Reifsnyder

Senior Fellow

Dan Reifsnyder

Dan Reifsnyder is a Senior Fellow at Climate Advisers, where he advises the organization's strategic initiatives.
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Bruce Searby

Special Counsel

Bruce Searby

Bruce Searby serves as Special Counsel to Climate Advisers. In that role, he serves as Climate Advisers’ thought leader and expert on how to use U.S. and international laws to advance climate action.
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Our team of experts draws from the worlds of politics, policy, finance, communication, international diplomacy and corporate strategy to advance climate action in the US and around the world.