Global Ecology Stories
Global Ecology
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Carnegie’s Anna Michalak’s work guides North American carbon assessment
Washington, DC—Carnegie’s Anna Michalak was a major contributor to the U.S. Global Change Research Program...
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Global Ecology
Unprecedented atlas of coral reefs released
Washington, DC—Today, Paul G. Allen Philanthropies and a consortium of partners, including Carnegie, unveiled the Allen Coral Atlas, a pioneering effort that uses high-resolution satellite...
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Global Ecology
Smokestacks photo from the public domain
Particulate pollution’s impact varies greatly depending on where it originated
Washington, DC— When it comes to aerosol pollution, as the old real estate adage says, location is everything. Aerosols are tiny particles that are spewed into the atmosphere by human...
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Global Ecology
Pacific Ocean’s Effect on Arctic Warming
New research, led by former Carnegie postdoctoral fellow Summer Praetorius, shows that changes in the heat flow of the northern Pacific Ocean may have a larger effect on the Arctic climate than...
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Global Ecology
Robin Martin and Katie Kryston search the Spectranomics Library for a species. Photo by Greg Asner.
Flying laboratory team’s pioneering mapping technique adopted for Canada-based effort
Washington, DC—Last week, the Natural Sciences and Engineering Research Council of Canada announced a multimillion dollar grant to support the launch of the...
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Global Ecology
Seagrass. California, Channel Islands NMS. Claire Fackler, CINMS, NOAA.
Can seagrass help fight ocean acidification?
Washington, DC—Seagrass meadows could play a limited, localized role in alleviating ocean acidification in coastal ecosystems, according to new work led by Carnegie’s...
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Global Ecology
Path to zero emissions starts out easy, but gets steep
Washington, DC—Carbon dioxide emissions from human activities must approach zero within several decades to avoid risking grave damage from the effects of climate change.  This will require...
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Global Ecology
Flying laboratory wins $250,000 to map health of Hawaii’s coral reefs
Washington, DC— Carnegie’s Greg Asner advanced through a venture capital-style pitch group challenge to win a $250,000 grant from ...
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Global Ecology
The Carnegie Airborne Observatory
The Carnegie Airborne Observatory (CAO), developed by GregAsner, is a fixed-wing aircraft that sweeps laser light across the vegetation canopy to image it in brilliant 3-D. The data can determine the location and size of each tree at a resolution of 3.5 feet (1.1 meter), a level of detail that is...
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Global Ecology
Carnegie Spectranomics
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...
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Global Ecology
CLASlite
Monitoring tropical deforestation and forest degradation with satellites can be an everyday activity for non-experts who support environmental conservation, forest management, and resource policy development. Through extensive observation of user needs, the Greg Asner team developed CLASlite ( the...
Explore this Project
Meet Carnegie Scientists
Global Ecology
Carnegie Science, Carnegie Institution for Science, Carnegie Institution
Greg Asner
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...
Meet this Scientist
Global Ecology
Ken Caldeira
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
Global Ecology
Anna Michalak
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
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Flying laboratory wins $250,000 to map health of Hawaii’s coral reefs
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Read Al Jazeera's Story About the Carnegie Airborne Observatory and the California Drought
A unique airborne observatory measures the drought stress in California at 8 million trees per hour...more
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How can we accurately map and monitor carbon stocks?
Watch the Carnegie Airborne Observatory make the world's highest resolution carbon map of a country (Panama) in less than one minute   Washington, DC—A team of researchers has for the first time...
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Explore Carnegie Science

SOCCR2 cover art
Carnegie’s Anna Michalak’s work guides North American carbon assessment
November 27, 2018

Washington, DC—Carnegie’s Anna Michalak was a major contributor to the U.S. Global Change Research Program’s Second State of the Carbon Cycle Report released last Friday, which provides a current state-of-the-science assessment of the carbon cycle in North America—including the United States, Canada, and Mexico—and  its connection to climate and society.

Over the past decade, fossil fuel emissions continued to be by far the largest North American carbon source. Urban areas in North America are the primary source of anthropogenic carbon emissions.

But land ecosystems and the ocean play a major role in removing and sequestering carbon

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Unprecedented atlas of coral reefs released
October 29, 2018

Washington, DC—Today, Paul G. Allen Philanthropies and a consortium of partners, including Carnegie, unveiled the Allen Coral Atlas, a pioneering effort that uses high-resolution satellite imagery and advanced analytics to map and monitor the world’s coral reefs in unprecedented detail. At launch, the Allen Coral Atlas offers the highest-resolution, up-to-date global image of the world’s coral reefs ever captured, and the first detailed maps showing the composition and structure of five important reefs located throughout the world.

“Paul challenged us with a bold and audacious goal—save coral reefs around the world,” said Bill Hilf, CEO of

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Smokestacks photo from the public domain
Particulate pollution’s impact varies greatly depending on where it originated
August 16, 2018

Washington, DC— When it comes to aerosol pollution, as the old real estate adage says, location is everything.

Aerosols are tiny particles that are spewed into the atmosphere by human activities, including burning coal and wood. They have negative effects on air quality—damaging human health and agricultural productivity.

While greenhouse gases cause warming by trapping heat in the atmosphere, some aerosols can have a cooling effect on the climate—similar to how emissions from a major volcanic eruption can cause global temperatures to drop.  This occurs because the aerosol particles cause more of the Sun’s light to be reflected away from the

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Pacific Ocean’s Effect on Arctic Warming
August 7, 2018

New research, led by former Carnegie postdoctoral fellow Summer Praetorius, shows that changes in the heat flow of the northern Pacific Ocean may have a larger effect on the Arctic climate than previously thought. The findings are published in the August 7, 2018, issue of Nature Communications.

The Arctic is experiencing larger and more rapid increases in temperature from global warming more than any other region, with sea-ice declining faster than predicted. This effect, known as Arctic amplification, is a well-established response that involves many positive feedback mechanisms in polar regions.

What has not been well understood is how sea-surface temperature patterns and

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CLASlite

Monitoring tropical deforestation and forest degradation with satellites can be an everyday activity for non-experts who support environmental conservation, forest management, and resource policy development.

Through extensive observation of user needs, the Greg Asner team developed CLASlite ( the Carnegie Landsat Analysis System--Lite) to assist governments, nongovernmental organizations, and academic institutions with high-resolution mapping and monitoring of forests with satellite imagery.

CLASlite is a software package designed for highly automated identification of deforestation and forest degradation from remotely sensed satellite imagery. It incorporates state-of-the

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Monitoring Global Net Primary Production

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 over a specific time. Joe Berry was part of a team that took an entirely new approach by using satellite technology to measure light that is emitted by plant leaves as a byproduct of photosynthesis as shown by the artwork.

The plant produces fluorescent light when sunlight excites the photosynthetic pigment chlorophyll. Satellite instruments sense this fluorescence yielding a direct

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Intergovernmental Panel on Climate Change

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

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Global Change Experiment, Jasper Ridge

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

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Joseph Berry, Acting Director

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

Meet this Scientist
Ken Caldeira

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

Meet this Scientist
Anna Michalak

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

Meet this Scientist
Carnegie Science, Carnegie Institution for Science, Carnegie Institution
Greg Asner

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

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