P
Pushker Kharecha
Researcher at Columbia University
Publications - 44
Citations - 7758
Pushker Kharecha is an academic researcher from Columbia University. The author has contributed to research in topics: Global warming & Climate change. The author has an hindex of 25, co-authored 43 publications receiving 7087 citations. Previous affiliations of Pushker Kharecha include Goddard Institute for Space Studies & Pennsylvania State University.
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Journal ArticleDOI
Target atmospheric CO2: Where should humanity aim?
James Hansen,Makiko Sato,Pushker Kharecha,David J. Beerling,Robert A. Berner,Valérie Masson-Delmotte,Mark Pagani,Maureen E. Raymo,Dana L. Royer,James C Zachos +9 more
TL;DR: In this paper, the authors show that the current CO2 level can be reduced to at most 350 ppm by phasing out coal use except where CO2 is captured and adopting agricultural and forestry practices that sequester carbon.
Journal ArticleDOI
Target atmospheric CO2: Where should humanity aim?
James Hansen,Makiko Sato,Pushker Kharecha,David J. Beerling,Robert A. Berner,Valérie Masson-Delmotte,Mark Pagani,Maureen E. Raymo,Dana L. Royer,James C Zachos +9 more
TL;DR: In this article, the authors show that the current CO2 level can be reduced to at most 350 ppm by phasing out coal use except where CO2 is captured and adopting agricultural and forestry practices that sequester carbon.
Journal ArticleDOI
Earth's energy imbalance and implications
James Hansen,James Hansen,Makiko Sato,Makiko Sato,Pushker Kharecha,Pushker Kharecha,K. von Schuckmann +6 more
TL;DR: In this paper, the authors show that most climate models mix heat too efficiently into the deep ocean and as a result underestimate the negative forcing by human-made aerosols, and conclude that recent slowdown of ocean heat uptake was caused by a delayed rebound effect from Mount Pinatubo aerosols and a deep prolonged solar minimum.
Journal ArticleDOI
Assessing "dangerous climate change": required reduction of carbon emissions to protect young people, future generations and nature.
James Hansen,Pushker Kharecha,Pushker Kharecha,Makiko Sato,Valérie Masson-Delmotte,Frank Ackerman,David J. Beerling,Paul J. Hearty,Ove Hoegh-Guldberg,Shi-Ling Hsu,Camille Parmesan,Camille Parmesan,Johan Rockström,Eelco J. Rohling,Eelco J. Rohling,Jeffrey D. Sachs,Pete Smith,Konrad Steffen,Lise Van Susteren,Karina von Schuckmann,James C Zachos +20 more
TL;DR: Climate impacts of global warming is assessed using ongoing observations and paleoclimate data and simple representations of the global carbon cycle and temperature to define emission reductions needed to stabilize climate and avoid potentially disastrous impacts on today’s young people, future generations, and nature.
Journal ArticleDOI
Ice melt, sea level rise and superstorms: evidence from paleoclimate data, climate modeling, and modern observations that 2 °C global warming could be dangerous
James Hansen,Makiko Sato,Paul J. Hearty,Reto Ruedy,Maxwell Kelley,Valérie Masson-Delmotte,Gary L. Russell,George Tselioudis,Junji Cao,Eric Rignot,Eric Rignot,Isabella Velicogna,Isabella Velicogna,Blair R. Tormey,Bailey G. Donovan,Evgeniya Kandiano,Karina von Schuckmann,Pushker Kharecha,Pushker Kharecha,Allegra N. LeGrande,Michael Bauer,Michael Bauer,K. Lo +22 more
TL;DR: The authors used numerical climate simulations, paleoclimate data, and modern observations to study the effect of growing ice melt from Antarctica and Greenland and found that ice mass loss from the most vulnerable ice, sufficient to raise sea level several meters, is better approximated as exponential than by a more linear response.