- Climate Change Policy and Economics
- Environmental Impact and Sustainability
- Energy, Environment, and Transportation Policies
- Global Energy and Sustainability Research
- Atmospheric and Environmental Gas Dynamics
- Energy, Environment, Economic Growth
- Energy and Environment Impacts
- Social Acceptance of Renewable Energy
- Risk Perception and Management
- Sustainability and Climate Change Governance
- Climate Change and Geoengineering
- Climate Change and Health Impacts
- Private Equity and Venture Capital
- Integrated Energy Systems Optimization
- Climate Change Communication and Perception
- Global Energy Security and Policy
- Plant Water Relations and Carbon Dynamics
- Sustainable Development and Environmental Policy
- Forest Management and Policy
- CO2 Sequestration and Geologic Interactions
- Innovation Policy and R&D
- demographic modeling and climate adaptation
- Environmental Sustainability in Business
- Innovation Diffusion and Forecasting
- Electric Vehicles and Infrastructure
University of Maryland, College Park
2016-2025
Korea Advanced Institute of Science and Technology
2024
Pacific Northwest National Laboratory
2009-2024
Joint Global Change Research Institute
2009-2024
United States Department of State
2021
University Research Co (United States)
2011-2014
Brookings Institution
2013
University of California System
2007
Georgetown University
2005-2007
University of California, Berkeley
2000-2001
Reducing risks of severe outcomes and improving chances limiting warming to 2°C
More than half of current coal power capacity is in China. A key strategy for meeting China's 2060 carbon neutrality goal and the global 1.5 °C climate to rapidly shift away from unabated use. Here we detail how structure a high-ambition phaseout China while balancing multiple national needs. We evaluate 1037 currently operating plants based on comprehensive technical, economic environmental criteria develop metric prioritizing early retirement. find that 18% consistently score poorly across...
A rapid transition away from unabated coal use is essential to fulfilling the Paris climate goals. However, many countries are actively building and operating power plants. Here we plant-level data specify alternative trajectories for technologies in an integrated assessment model. We then quantify cost-effective retirement pathways global country-level fleets limit long-term temperature change. present our results using a decision-relevant metric: operational lifetime limit. Even if no new...
Increased ambition and implementation are essential.
In our discussion of the use global warming potential (GWP) values in Howarth et al (2011) paper, text implies that GISS group's 2009 and 2010 papers (Shindell Unger 2010) were contradictory. Such an interpretation does not reflect conclusions those was intention. First, address GWP radiative forcing, respectively. Our intentions paragraph (a) to illustrate possible ways forcing discussions scientific community misapplied lifecycle analysis greenhouse gas emissions from unconventional...
Approaches that root national climate strategies in local actions will be essential for all countries as they develop new nationally determined contributions under the Paris Agreement. The potential impact of action from non-national actors delivering higher global ambition is significant. Sub-national United States provides a test how such can accelerate emissions reductions. We aggregated U.S. state, city, and business commitments within an integrated assessment model to assess strategy...
Disagreement over principles for the inclusion of developing countries in future global greenhouse gas caps remains an obstacle to ratification and implementation Kyoto Protocol. [ Baer et al. ][1] argue that a transition from allocations based on past emissions (with grandfather clause), such as Protocol, embodies industrialized nations, new regime equal per capita rights, is necessary fair solution can lead effective reduction regime. Such allocation consistent with numerous ethical legal...
New techniques to extract natural gas from unconventional resources have become economically competitive over the past several years, leading a rapid and largely unanticipated expansion in production. The US Energy Information Administration projects that will supply nearly half of production by 2035. In addition, significantly expanding diversifying internationally, exploitation new has potential reshape energy policy at national international levels—altering geopolitics security, recasting...
The international community has set a goal to limit global warming 2 °C. Limiting °C is challenging and will entail dramatic transformation of the energy system, largely complete by 2040. As part work toward this goal, countries have been submitting their Intended Nationally Determined Contributions (INDCs) United Nations Framework Convention on Climate Change, indicating emissions reduction commitments through 2025 or 2030, in advance 21st Conference Parties (COP21) Paris December 2015. In...
Abstract Momentum to phase out unabated coal use is growing globally. This transition critical meeting the Paris climate goals but can potentially lead large amounts of stranded assets, especially in regions with newer and fleets. Here we combine plant-level data a global integrated assessment model quantify changes asset risks from coal-fired power plants across over time. With new plant proposals, cancellations, retirements past five years, net committed emissions 2030 existing planned...
Electrification plays a crucial role in deep decarbonization. However, electrification and power infrastructure can cause mutual challenges. We use nationwide outage electric vehicle adoption data China to provide empirical evidence on how failures deter electrification. find that when the number of outages per district increases by 1 given month, new vehicles adopted month decreases 0.99%. A doubling one year average across nation create depressed rate for up decade, implying decline more...
We investigated key factors controlling mass and energy exchange by a young (6-year-old) ponderosa pine (Pinus Laws.) plantation on the west side of Sierra Nevada Mountains an old-growth forest (mix 45- 250-year-old trees) east Cascade Mountains, from June through September 1997. At both sites, we operated eddy covariance systems above canopy to measure net ecosystem carbon dioxide water vapor, made concurrent meteorological ecophysiological measurements. Our objective was understand compare...
Global climate change will have environmental, economic, and potentially even political security impacts on Qatar the Gulf Cooperation Council (GCC) region. Combined with rising population levels, aggravate existing challenges regarding water scarcity food raise new through adverse human health, economic development environment. In addition, importance of oil gas makes other GCC countries economically vulnerable to global efforts reduce greenhouse emissions.