Greg Asner Receives Heinz Award
Carnegie staff scientist Greg Asner has been awarded the 22nd Heinz Award for the Environment,* “ for developing ultra-high-resolution imaging technology that provides unprecedented detail on the...
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Carnegie Science, Carnegie Institution, Carnegie Institution for Science, William and Leander Anderegg
Washington, DC— The amount of time it takes for an ecosystem to recover from a drought is an important measure of a drought’s severity. During the 20th century, the total area of land affected by...
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Carnegie Science, Carnegie Institution, Carnegie Institution for Science, NASA Earth Observatory
Washington, DC— If climate change is not curbed, increased precipitation could substantially overload U.S. waterways with excess nitrogen, according to a new study from Carnegie’s Eva Sinha and Anna...
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Carnegie Science, Carnegie Institution, Carnegie Institution for Science, Ken Caldeira
Washington, DC— Geoengineering is a catch-all term that refers to various theoretical ideas for altering Earth’s energy balance to combat climate change. New research from an international team of...
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NASA, NOAA, Carnegie Institution for Science
New satellite data will mean more accurate and detailed Lake Erie Harmful Algal Bloom Forecast System Washington, DC—NOAA and its research partners, including Carnegie's Anna Michalak and Jeff Ho,...
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Carnegie Science, Carnegie Institution, Carnegie Institution for Science, HUTAN/Borneo Futures
Washington, DC— Bornean orangutans living in forests impacted by human commerce seek areas of denser canopy enclosure, taller trees, and sections with trees of uniform height, according to new...
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Carnegie Science, Carnegie Institution, Carnegie Institution for Science,
The 2017 Kyoto Prize in the Basic Sciences has been awarded to Graham Farquhar, a distinguished professor at The Australian National University and a long-time collaborator of Carnegie scientists in...
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Carnegie Science, Carnegie Institution, Carnegie Institution for Science, Vibrant Clean Energy LLC
Washington, DC—Solving the climate change problem means transitioning to an energy system that emits little or no greenhouse gases into the atmosphere. According to new work from a team of experts...
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Until now, computer models have been the primary tool for estimating photosynthetic productivity on a global scale. They are based on estimating a measure for plant energy called gross primary production (GPP), which is the rate at which plants capture and store a unit of chemical energy as biomass...
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Anna Michalak’s team combined sampling and satellite-based observations of Lake Erie with computer simulations and determined that the 2011 record-breaking algal bloom in the lake was triggered by long-term agricultural practices coupled with extreme precipitation, followed by weak lake circulation...
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In March 2014, a technical support unit (TSU) of ten, headquartered at Global Ecology, had successfully completed a herculean management effort for the 2000-page assessment Climate Change 2014: Impacts, Adaptation, and Vulnerability, including two summaries. They were issued by the United Nations (...
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Joe Berry has been a Carnegie investigator since 1972. He has developed powerful tools to measure local and regional exchanges of carbon over spaces of up to thousands of square miles. He uses information at the plant scale to extrapolate the carbon balance at regional and continental scales....
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Anna Michalak joined Carnegie in 2011 from the Department of Civil and Environmental Engineering at the University of Michigan. Her research focuses on characterizing complexity and quantifying uncertainty in environmental systems to improve our understanding of these systems and our ability to...
Meet this Scientist
Ken Caldeira has been a Carnegie investigator since 2005 and is world renowned for his modeling and other work on the global carbon cycle; marine biogeochemistry and chemical oceanography, including ocean acidification and the atmosphere/ocean carbon cycle; land-cover and climate change; the long-...
Meet this Scientist
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Washington, D.C.—By combining airborne laser technology, satellite mapping, and ground-based plot surveys, a team of researchers has produced the first large-scale, high-resolution estimates of...
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Washington, DC— It is imperative that society learn more about how climate change contributes to episodic and very severe water quality impairments, such as the harmful algal bloom that caused...
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Washington, DC— Climate change caused by greenhouse gas emissions will alter the way that Americans heat and cool their homes. By the end of this century, the number of days each year that heating...
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Explore Carnegie Science

Greg Asner Receives Heinz Award
September 14, 2017

Carnegie staff scientist Greg Asner has been awarded the 22nd Heinz Award for the Environment,* “ for developing ultra-high-resolution imaging technology that provides unprecedented detail on the biodiversity and health of the world’s forests and coral reefs, and the impact of deforestation, land degradation and climate change.” The annual award comes with a cash award of $250,000.

Asner was hired in 2001 as the Department of Global Ecology’s first staff scientist. Since coming to Carnegie, Asner has pioneered new methods for investigating tropical deforestation, degradation, ecosystem diversity, invasive species, carbon emissions, climate change, and much more using satellite and

Carnegie Science, Carnegie Institution, Carnegie Institution for Science, William and Leander Anderegg
August 9, 2017

Washington, DC— The amount of time it takes for an ecosystem to recover from a drought is an important measure of a drought’s severity. During the 20th century, the total area of land affected by drought increased, and longer recovery times became more common, according to new research published by Nature by a group of scientists including Carnegie’s Anna Michalak and Yuanyuan Fang.

Scientists predict that more-severe droughts will occur with greater frequency in the 21st century, so understanding how ecosystems return to normal again will be crucial to preparing for the future. However, the factors that influence drought recovery have been largely unknown until now.

Carnegie Science, Carnegie Institution, Carnegie Institution for Science, NASA Earth Observatory
July 27, 2017

Washington, DC— If climate change is not curbed, increased precipitation could substantially overload U.S. waterways with excess nitrogen, according to a new study from Carnegie’s Eva Sinha and Anna Michalak and Princeton University’s Venkatramani Balaji published by Science. Excess nutrient pollution increases the likelihood of events that severely impair water quality. The study found that impacts will be especially strong in the Midwest and Northeast.

Rainfall and other precipitation washes nutrients from human activities like agriculture and fossil fuel combustion into rivers and lakes. When these waterways get overloaded with nutrients, a phenomenon called “eutrophication,”

Carnegie Science, Carnegie Institution, Carnegie Institution for Science, Ken Caldeira
July 24, 2017

Washington, DC— Geoengineering is a catch-all term that refers to various theoretical ideas for altering Earth’s energy balance to combat climate change. New research from an international team of atmospheric scientists published by Geophysical Research Letters investigates for the first time the possibility of using a “cocktail” of geoengineering tools to reduce changes in both temperature and precipitation caused by atmospheric greenhouse gases.

Carbon dioxide emissions from the burning of coal, oil, and gas not only cause the Earth to get hotter, they also affect weather patterns around the world. Management approaches need to address both warming and changes in the amount of

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Carnegie researchers are developing new scientific approaches that integrate phylogenetic, chemical and spectral remote sensing perspectives - called Spectranomics - to map canopy function and biological diversity throughout tropical forests of the world.

Mapping the composition and chemistry of species in tropical forests is critical to understanding forest functions related to human use and climate change. However, high-resolution mapping of tropical forest canopies is challenging because traditional field, airborne and satellite measurements cannot easily measure the canopy chemical or taxonomic variation among species over large regions. New technology, such as the Carnegie

In March 2014, a technical support unit (TSU) of ten, headquartered at Global Ecology, had successfully completed a herculean management effort for the 2000-page assessment Climate Change 2014: Impacts, Adaptation, and Vulnerability, including two summaries. They were issued by the United Nations (UN) Intergovernmental Panel on Climate Change (IPCC), Working Group II co-chaired by Chris Field, Global Ecology director, with science co-directors Katie Mach and Mike Mastrandrea managing the input of over 190 governments and nearly 2,000 experts from around the world.

The IPCC, established in 1988, assesses information about climate change and its impacts. In September 2008, Field was

Anna Michalak’s team combined sampling and satellite-based observations of Lake Erie with computer simulations and determined that the 2011 record-breaking algal bloom in the lake was triggered by long-term agricultural practices coupled with extreme precipitation, followed by weak lake circulation and warm temperatures. The bloom began in the western region in mid-July and covered an area of 230 square miles (600 km2). At its peak in October, the bloom had expanded to over 1930 square miles (5000 km2). Its peak intensity was over 3 times greater than any other bloom on record. The scientists predicted that, unless agricultural policies change, the lake will continue to experience

Chris Field is a co-principal investigator of the Jasper Ridge Global Change Experiment at the Jasper Ridge Biological Preserve in northern California. The site, designed to exploit grasslands as models for understanding how ecosystems may respond to climate change, hosts a number of studies of the potential effects from elevated atmospheric carbon dioxide, elevated temperature, increased precipitation, and increased nitrogen deposition. The site houses experimental plots that replicate all possible combinations of the four treatments and additional sampling sites that control for the effects of project infrastructure. Studies focus on several integrated ecosystem responses to the

Carnegie Science, Carnegie Institution for Science, Carnegie Institution

Greg Asner is a staff scientist in Carnegie's Department of Global Ecology and also serves as a Professor in the Department of Earth System Science at Stanford University. He is an ecologist recognized for his exploratory and applied research on ecosystems, land use, and climate change at regional to global scales.

Asner graduated with a bachelor’s degree in engineering from the University of Colorado, Boulder, in 1991. He earned master's and doctorate degrees in geography and biology, respectively, from the University of Colorado in 1997. He served as a postdoctoral fellow in the Department of Geological and Environmental Sciences at Stanford University until he joined the

Joe Berry has been a Carnegie investigator since 1972. He has developed powerful tools to measure local and regional exchanges of carbon over spaces of up to thousands of square miles. He uses information at the plant scale to extrapolate the carbon balance at regional and continental scales.

According to ISI's Web of Science, two of Joe Berry's papers passed extremely high, rarefied citation milestones. The 1980  paper “A biochemical model of photosynthetic CO2 assimilation in leaves of C3 species,” has had over 1,500th citations. His 1982 paper “On the relationship between carbon isotope discrimination and the intercellular carbon dioxide concentration in leaves” passed its 1,

Anna Michalak joined Carnegie in 2011 from the Department of Civil and Environmental Engineering at the University of Michigan. Her research focuses on characterizing complexity and quantifying uncertainty in environmental systems to improve our understanding of these systems and our ability to forecast their variability. She is looking at a variety of interactions including atmospheric greenhouse gas emission and sequestration estimation, water quality monitoring and contaminant source identification, and use of remote sensing data for Earth system characterization.

The common theme of her research is to develop and apply spatiotemporal statistical data methods for optimizing the

Ken Caldeira has been a Carnegie investigator since 2005 and is world renowned for his modeling and other work on the global carbon cycle; marine biogeochemistry and chemical oceanography, including ocean acidification and the atmosphere/ocean carbon cycle; land-cover and climate change; the long-term evolution of climate and geochemical cycles; climate intervention proposals; and energy technology.

 Caldeira was a lead author for the U.N.’s Intergovernmental Panel on Climate Change (IPCC) AR5 report and was coordinating lead author of the oceans chapter for the 2005 IPCC report on carbon capture and storage. He was a co-author of the 2010 US National Academy America's Climate