A5024516953- Labor Movements and Unions
- Public Policy and Administration Research
- Political and Economic history of UK and US
- Social Policy and Reform Studies
- Integrated Energy Systems Optimization
- Healthcare innovation and challenges
- Meteorological Phenomena and Simulations
- Climate variability and models
- Energy Load and Power Forecasting
- European Union Policy and Governance
- Employment and Welfare Studies
- Hydrology and Drought Analysis
- Environmental Impact and Sustainability
- Energy and Environment Impacts
- Solar Radiation and Photovoltaics
- Global Energy and Sustainability Research
- Wind Energy Research and Development
- Non-Destructive Testing Techniques
- Higher Education Governance and Development
- Flood Risk Assessment and Management
- Human Resource and Talent Management
- Accounting and Organizational Management
- Precipitation Measurement and Analysis
- Water Systems and Optimization
- Urban Stormwater Management Solutions
Carnegie Institution for Science
2019-2022
ORCID
2021
Columbia University
2015-2019
Environmental Earth Sciences
2015
University of Portsmouth
1995-2010
University of Greenwich
2005-2007
Catholic University of America
2004-2005
Portsmouth College
1973-1987
If future net-zero emissions energy systems rely heavily on solar and wind resources, spatial temporal mismatches between resource availability electricity demand may challenge system reliability. Using 39 years of hourly reanalysis data (1980-2018), we analyze the ability resources to meet in 42 countries, varying hypothetical scale mix renewable generation as well storage capacity. Assuming perfect transmission annual equal demand, but no storage, find most reliable are wind-heavy satisfy...
Abstract Winter storm Uri brought severe cold to the southern United States in February 2021, causing a cascading failure of interdependent systems Texas where infrastructure was not adequately prepared for such cold. In particular, interconnected energy restricted electricity supply just as demand heating spiked, leaving millions Texans without heat or electricity, many several days. This motivates question: did historical storms suggest that temperatures were known occur, and if so with...
Electricity usage (demand) data are used by utilities, governments, and academics to model electric grids for a variety of planning (e.g., capacity expansion system operation) purposes. The U.S. Energy Information Administration collects hourly demand from all balancing authorities (BAs) in the contiguous United States. As September 2019, we find 2.2% their database missing. Additionally, 0.5% reported quantities either negative values or otherwise identified as outliers. With goal attaining...
Abstract While most electricity systems are designed to handle peak demand during summer months, long-term energy pathways consistent with deep decarbonization generally electrify building heating, thus increasing winter. A key question is how climate variability and change will affect heating cooling in an electrified future. We conduct a spatially explicit analysis of trends temperature-based proxies over the past 70 years. Average annual for (cooling) decreases (increases) contiguous US....
Abstract General circulation models (GCMs) have been demonstrated to produce estimates of precipitation, including the frequency extreme with substantial bias and uncertainty relative their representation other fields. Thus, while theory predicts changes in hydrologic cycle under anthropogenic warming, there is generally low confidence future projections precipitation for specific river basins. In this paper, we explore whether a GCM simulates large‐scale atmospheric indices that are...
Abstract This paper illustrates the potential for seasonal prediction of wind and solar energy resources through a case study in Yangtze River estuary. Sea surface temperature geopotential height-based climate predictors, each with high correlation to ensuing speed radiation at Baoshan weather observing station, are identified used build statistical models predict radiation. Leave-one-out-cross-validation is applied verify predictive skill best performing candidate model season. We find that...
Abstract Wind and solar electricity generation is projected to expand substantially over the next several decades due both rapid cost declines as well regulation designed achieve climate targets. With increasing reliance on wind generation, future energy systems may be vulnerable previously underappreciated synoptic-scale variations characterized by low and/or surface radiation. Here we use western North America a case study region investigate historical meteorology of weekly-scale...
The assessment and implementation of structural or financial instruments for climate risk mitigation requires projections future over the operational life each proposed instrument. A point often neglected in adaptation literature is that physical sources predictability differ between projects with long short planning periods: While historical paleo records emphasize low‐frequency modes variability, anthropogenic change expected to alter their occurrence at longer time scales. In this paper...
The validation of numerical models for large lakes is difficult because sparse field observations. In this study, a Froude-Rossby scaled physical model Lake Ontario, North America, used to support simulations. Experimental data are consistent with available observations and provide more comprehensive view lake-wide features that include, in the absence wind, strong eastward flows along both northern southern shorelines, cyclonic gyre Rochester basin, smaller midlake eddies. With west wind...
Winter storm Uri brought severe cold to the southern United States in February 2021, causing a cascading failure of interdependent systems Texas where infrastructure was not adequately prepared for such cold. In particular, interconnected energy restricted electricity supply just as demand heating spiked, leaving millions Texans without heat or electricity, many several days. This motivates question: did historical storms suggest that temperatures were known occur, and if so with what...
Wind and solar photovoltaic generators are projected to play important roles in achieving a net-zero-carbon electricity system that meets current future energy needs. Here, we show potential advantages of long-term site planning wind power plants deeply decarbonized systems using macro-scale model. With weak carbon emission constraints substantial amounts flexible sources on the grid (e.g., dispatchable power), relatively high value is placed sites with capacity factors because added or can...
We develop and present a k-nearest neighbor space-time simulator that accounts for the spatiotemporal dependence in high-dimensional hydroclimatic fields (e.g., wind solar) can simulate synthetic realizations of arbitrary length. illustrate how this statistical simulation tool be used context regional power system planning under scenario high reliance on solar generation when long historical records potential are not available. show our model to assess probability distribution severity...
Britain's public sector has undergone a series of radical structural and managerial changes over the past 20 years. These are associated with public‐sector reform innovations in management. They have impacted significantly on ways which employees recruited, selected, rewarded, assessed, trained managed. This article outlines impact these staff participation involvement practices civil service, National Health Service (NHS) local government, highlights some major trends.