"Some of the scariest prospects from a changing clime involve conditions completely outside the range of human experience," Department of Global Ecology Director Chris Field tells the Associated...
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Impacts of Large Herbivores on Vegetation: publications from the journals Ecography and Publications of the National Academy of Sciences
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Washington, DC— Protected areas, such as nature reserves and national parks, play a crucial role in sheltering wildlife, such as African elephants, from hunting and habitat destruction. But it’s...
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The L.A. Times covers the Carnegie Airborne Observatory's assessment of California's drought: "Asner has a practiced eye for forest health, and with instruments aboard his plane that give him X-ray...
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Washington, D.C.—With mounting vigor for combating global climate change, increasing the use of renewable energy resources such as solar, without compromising natural habitats, is a challenge to the...
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“The system produces maps that tell us more about an ecosystem in a single airborne overpass than what might be achieved in a lifetime of work on the ground,” Greg Asner tells National Geographic in...
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A unique airborne observatory measures the drought stress in California at 8 million trees per hour.....
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"Two physical realities virtually ensure that Californians will still face drought, regardless of how this El Niño unfolds," write Department of Global Ecology Director Chris Field and Stanford's ...
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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
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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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...
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For three decades, Chris Field has pioneered novel approaches to ecosystem research to understand climate and environmental changes. He is the founding director of the Carnegie Institution’s Department of Global Ecology on the Stanford University campus—home to a small, but remarkably productive...
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-...
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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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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 including...
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Washington, D.C.— Could replacing coal-fired electricity plants with generators fueled by natural gas bring global warming to a halt in this century? What about rapid construction of massive numbers...
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AudioWashington, D.C.—Lake Erie just can’t catch a break. The lake has experienced harmful algal blooms and severe oxygen-depleted “dead zones” for years, but now a team of researchers led by...
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Explore Carnegie Science

December 6, 2017

Washington, DC— The climate models that project greater amounts of warming this century are the ones that best align with observations of the current climate, according to a new paper from Carnegie’s Patrick Brown and Ken Caldeira published by Nature.  Their findings suggest that the models used by the Intergovernmental Panel on Climate Change, on average, may be underestimating future warming.

Climate model simulations are used to predict how much warming should be expected for any given increase in the atmospheric concentration of carbon dioxide and other greenhouse gases.

“There are dozens of prominent global climate models and they all project different amounts of

Carnegie Science, Carnegie Institution, Carnegie Institution for Science, Carnegie Airborne Observatory, Greg Asner.
December 4, 2017

Washington, DC— About 40 percent of northern Malaysian Borneo’s carbon stocks exist in forests that are not designated for maximum protections, according to new remote sensing and satellite mapping from Carnegie’s Greg Asner and his colleagues.

Asner’s flying laboratory, the Carnegie Airborne Observatory, was able to map carbon stocks that—together with satellite imaging and other geospatial data—will guide conservation efforts undertaken by the Sabah Forestry Department in Malaysian Borneo, the Southeast Asia Rainforest Research Partnership (SEARRP), the PACOS Trust, BC Initiative and other organizations.

“We are proud to be part of this groundbreaking endeavor in the

November 20, 2017

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We’ve all seen the photos. Long panel tables full of people from around the globe hashing out the intricacies of how to best fight climate change for endless grueling hours.

But what’s it like to be in the room?

Carnegie’s Geeta Persad will be there and she’ll checking in with us periodically to offer an insider’s look at the 3rd Conference of

Carnegie Science, Carnegie Institution, Carnegie Institution for Science, Shutterstock
October 9, 2017

Washington, DC— There is considerable opportunity for generating wind power in the open ocean, particularly the North Atlantic, according to new research from Carnegie’s Anna Possner and Ken Caldeira. Their work is published by Proceedings of the National Academy of Sciences.

Because wind speeds are higher on average over ocean than over land, wind turbines in the open ocean could in theory intercept more than five times as much energy as wind turbines over land. This presents an enticing opportunity for generating renewable energy through wind turbines. But it was unknown whether the faster ocean winds could actually be converted to increased amounts of electricity.

“Are

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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

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

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 unprecedented. By combining field surveys with this airborne mapping and high-resolution satellite monitoring the team has been able to detail myriad ecological features of forests around the world.

As one example, Carnegie scientists with the Peruvian Ministry of Environment mapped the true extent of gold mining in the biologically diverse region of Madre de Dios in the Peruvian Amazon.

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

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

For three decades, Chris Field has pioneered novel approaches to ecosystem research to understand climate and environmental changes. He is the founding director of the Carnegie Institution’s Department of Global Ecology on the Stanford University campus—home to a small, but remarkably productive team of researchers who investigate the basics of climate change. Field has authored more than 200 scientific publications and is cochair of the U. N.'s Intergovernmental Panel on Climate Change (IPCC) Working Group 2. The IPCC Fourth Assessment, for which Field was a coordinating author, was published in 2007. He was coeditor of the March 2012 IPCC Special Report on Managing the Risks of Extreme

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

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