James E. Hansen
Goddard Institute for Space Studies
James Edward Hansen is an American climatologist. He is an adjunct professor directing the Program on Climate Science, Awareness and Solutions at Columbia University. He is best known for his research in climatology, his 1988 Congressional testimony on climate change that helped raise broad awareness of global warming, and his advocacy of action to avoid dangerous climate change. In recent years, he has become a climate activist to mitigate the effects of global warming, on a few occasions leadi
Read biography ↓Biography, research & contributions
James Edward Hansen is an American climatologist. He is an adjunct professor directing the Program on Climate Science, Awareness and Solutions at Columbia University. He is best known for his research in climatology, his 1988 Congressional testimony on climate change that helped raise broad awareness of global warming, and his advocacy of action to avoid dangerous climate change. In recent years, he has become a climate activist to mitigate the effects of global warming, on a few occasions leading to his arrest.
Affiliation
Goddard Institute for Space Studies
Top Publications
- A safe operating space for humanity (2009) - 13,411 citations
- Planetary Boundaries: Exploring the Safe Operating Space for Humanity (2009) - 7,221 citations
- Climate Forcing by Anthropogenic Aerosols (1992) - 3,863 citations
- GLOBAL SURFACE TEMPERATURE CHANGE (2010) - 3,190 citations
- Light scattering in planetary atmospheres (1974) - 2,718 citations
At a glance
- Full name
- James E. Hansen
- ORCID
- 0000-0002-2241-666X
- OpenAlex ID
- https://openalex.org/A5069096450
Research interests
- Climate variability and models, Biographical and Historical Analysis, Oral History, Memory, Narrative Analysis, Atmospheric aerosols and clouds, Climate Change and Environmental Impact
Research topics
Education
Not yet documented in this profile.
Selected research & further reading
A curated reading list, not a ranking by citation count. References use DOI metadata, matching public scholarly records or authoritative lecture sources.
See the source-linked reading and original works in the research guide above.
Citation & publication trends
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Source: OpenAlex · Retrieved 2026-10-07. Metrics are database-specific and are not a scientific ranking.
Most-cited linked publications
Publications matched across ORCID and OpenAlex. Citation counts are source-specific.
- A safe operating space for humanity ↗2009 · Nature13,411OpenAlex citations
- Planetary Boundaries: Exploring the Safe Operating Space for Humanity ↗2009 · Ecology and Society7,221OpenAlex citations
- Climate Forcing by Anthropogenic Aerosols ↗1992 · Science3,863OpenAlex citations
- GLOBAL SURFACE TEMPERATURE CHANGE ↗2010 · Reviews of Geophysics3,190OpenAlex citations
- Light scattering in planetary atmospheres ↗1974 · Space Science Reviews2,718OpenAlex citations
Recent linked publications
Publications matched across ORCID and OpenAlex. Citation counts are source-specific.
- A safe operating space for humanity ↗2009 · Nature
- Planetary Boundaries: Exploring the Safe Operating Space for Humanity ↗2009 · Ecology and Society
- Climate Forcing by Anthropogenic Aerosols ↗1992 · Science
- GLOBAL SURFACE TEMPERATURE CHANGE ↗2010 · Reviews of Geophysics
- Light scattering in planetary atmospheres ↗1974 · Space Science Reviews
Journals published in
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Institutions
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Previous institutions
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Awards & honors
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Career timeline
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Co-authors
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Education & career institution links
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Sign in to claim this profileSources & data information
Editorial review: 2026-10-07 · Last data update: 2026-10-07 21:02:28
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