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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Claire Langley

Vice President, Programs

Claire Langley

Claire Langley is Vice President of Programs at Climate Advisers. Claire’s expertise includes international climate & energy policy and diplomacy and international political climate change strategy.
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Dan Reifsnyder

Acting Head of Programs

Dan Reifsnyder

Dan Reifsnyder is Acting Head of Programs at Climate Advisers, where he oversees implementation of all projects and programs.
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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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Peter Graham

Managing Director, Policy and Research

Peter Graham

Peter Graham is Managing Director of Policy and Research at Climate Advisers, where he specializes in forests and land issues.
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Ben Simonds

Managing Director, Communications

Ben Simonds

Ben Simonds is a Managing Director at Climate Advisers and serves as the group’s the 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 and Research

Matt Piotrowski

Matt Piotrowski is the Senior Director of Policy and Research at Climate Advisers, focusing on communication outreach with the financial sector, managing the Chain Reaction Research initiative, and providing analysis for investors to mitigate climate risks.
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Diana Movius

Senior Director, Global Forest Policy

Diana Movius

Diana Movius is the Senior Director of Global Forest Policy, where she specializes in addressing deforestation through international climate policy, climate finance, and supply chains
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Niamh McCarthy

Director, Climate-Related Risk

Niamh McCarthy

Niamh McCarthy is Director of Climate-Related Risk at Climate Advisers, where she specializes in financial transparency, data analytics, and sustainability.
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Kyle Saukas

Deputy Director, Communications

Kyle Saukas

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

Deputy Director, Policy and Research

Joshua McBee

Josh McBee is a Deputy Director of Policy and Research at Climate Advisers, where he works on international climate policy, diplomacy projects, domestic U.S. energy/environmental policy and politics, and mitigation opportunities in food and agriculture.
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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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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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Simone Schonenberger

Human Resources Manager

Simone Schonenberger

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

Senior Associate, Communications

Kyra Althaus

Kyra Althaus is a Senior Communications Associate at Climate Advisers where she focuses on enhancing the group’s strategic communications projects.
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Karen Oseland

Associate, Climate Policy

Karen Oseland

Karen is a Climate Policy Associate at Climate Advisers where she works across programs with a particular focus on forests and other nature based solutions.
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Anna Mervosh

Executive & Program Assistant

Anna Mervosh

Anna Mervosh is an Executive and Program Assistant at Climate Advisers, where she supports the Operations and Programs teams.
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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.