Now showing items 1-20 of 27

    • Accurate Spectrally Resolved Infrared Radiance Observation from Space: Implications for the Detection of Decade-to-Century–Scale Climatic Change 

      Keith, David; Anderson, James G. (American Meteorological Society, 2001-03)
      The character of data required to measure decade-to-century–scale climatic change is distinctly different from that required for weather prediction or for studies of meteorological processes. The data ought to possess the ...
    • An air-liquid contactor for large-scale capture of CO2 from air 

      Holmes, G.; Keith, David (The Royal Society, 2012)
      We present a conceptually simple method for optimizing the design of a gas–liquid contactor for capture of carbon dioxide from ambient air, or ‘air capture’. We apply the method to a slab geometry contactor that uses ...
    • Are global wind power resource estimates overstated? 

      Adams, Amanda S.; Keith, David (IOP Publishing, 2013)
      Estimates of the global wind power resource over land range from 56 to 400 TW. Most estimates have implicitly assumed that extraction of wind energy does not alter large-scale winds enough to significantly limit wind power ...
    • Can we test geoengineering? 

      MacMynowski, Douglas G.; Keith, David; Caldeira, Ken; Shin, Ho-Jeong (Royal Society of Chemistry (RSC), 2011)
      Solar radiation management (SRM), a form of geoengineering, might be used to offset some fraction of the anthropogenic radiative forcing of climate as a means to reduce climate change, but the risks and effectiveness of ...
    • Carbon-cycle feedbacks increase the likelihood of a warmer future 

      Matthews, H. Damon; Keith, David (American Geophysical Union (AGU), 2007-05-04)
      Positive carbon-cycle feedbacks have the potential to reduce natural carbon uptake and accelerate future climate change. In this paper, we introduce a novel approach to incorporating carbon-cycle feedbacks into probabilistic ...
    • Climate after Trump 

      Wagner, Gernot; Keith, David (Council on Foreign Relations, 2016)
    • Climate policy under uncertainty: a case for solar geoengineering 

      Moreno-Cruz, Juan B.; Keith, David (Springer Nature, 2012)
      Solar Radiation Management (SRM) has two characteristics that make it useful for managing climate risk: it is quick and it is cheap. SRM cannot, however, perfectly offset CO2-driven climate change, and its use introduces ...
    • Climatic Impacts of Wind Power 

      Miller, Lee; Keith, David (Elsevier BV, 2018-12)
      Wind power can impact the climate by altering the atmospheric boundary layer, with at least 40 papers and 10 observational studies now linking wind power to climatic impacts. We make the first comparison between the climatic ...
    • Compressed air energy storage (CAES) with compressors distributed at heat loads to enable waste heat utilization 

      Safaei, Hossein; Keith, David; Hugo, Ronald J. (Elsevier BV, 2013)
      Large scale penetration of renewable energies such as wind and solar into the electric grid is complicated by their intermittency. Energy storage systems can mitigate these fluctuations by storing off-peak energy for use ...
    • Compressed air energy storage with waste heat export: An Alberta case study 

      Safaei, Hossein; Keith, David (Elsevier BV, 2014)
      Interest in compressed air energy storage (CAES) technology has been renewed driven by the need to manage variability form rapidly growing wind and solar capacity. Distributed CAES (D-CAES) design aims to improve the ...
    • Cost Analysis of Stratospheric Albedo Modification Delivery Systems 

      McClellan, Justin; Keith, David; Apt, Jay (IOP Publishing, 2012)
      We perform engineering cost analyses of systems capable of delivering 1–5 million metric tonnes (Mt) of albedo modification material to altitudes of 18–30 km. The goal is to compare a range of delivery systems evaluated ...
    • Effectiveness of stratospheric solar-radiation management as a function of climate sensitivity 

      Ricke, Katharine L.; Rowlands, Daniel J.; Ingram, William J.; Keith, David; Granger Morgan, M. (Nature Publishing Group, 2011)
      If implementation of proposals to engineer the climate through solar-radiation management (SRM) ever occurs, it is likely to be contingent on climate sensitivity. However, modelling studies examining the effectiveness of ...
    • Evaluating the role of cogeneration for carbon management in Alberta 

      Doluweera, G.H.; Jordaan, S.M.; Moore, M.C.; Keith, David; Bergerson, J.A. (Elsevier BV, 2011)
      Developing long-term carbon control strategies is important in energy intensive industries such as the oil sands operations in Alberta. We examine the use of cogeneration to satisfy the energy demands of oil sands operations ...
    • The Fate of an Engineered Planet 

      Keith, David; Parker, Andy (Nature Publishing Group, 2013)
      Solar engineering and other exceptionally ambitious new technologies to deal with the reality of rising global temperatures come riddled with uncertainties. To illustrate how complex the problem is and what kind of challenges ...
    • Feasibility of Injecting Large Volumes of CO2 into Aquifers 

      Ghaderi, Seyyed M.; Keith, David; Leonenko, Yuri (Elsevier BV, 2009-02)
      Although it is recognized that deep aquifers offer a very large potential storage capacity for CO2 sequestration it is not clear how to fill the storage with a large volume of CO2 in a relatively short period of time. The ...
    • Field experiments on solar geoengineering: report of a workshop exploring a representative research portfolio 

      Keith, David W.; Duren, Riley; MacMartin, Douglas G. (The Royal Society Publishing, 2014)
      We summarize a portfolio of possible field experiments on solar radiation management (SRM) and related technologies. The portfolio is intended to support analysis of potential field research related to SRM including ...
    • Geoengineering: The world's largest control problem 

      MacMartin, Douglas G.; Kravitz, Ben; Keith, David (IEEE, 2014)
      Solar geoengineering (or Solar Radiation Management, SRM) refers to any intentional, large-scale manipulation of the Earth's incoming solar radiation to offset some of the effects of anthropogenic greenhouse gases, reducing ...
    • Management of trade-offs in geoengineering through optimal choice of non-uniform radiative forcing 

      MacMartin, Douglas G.; Keith, David; Kravitz, Ben; Caldeira, Ken (Springer Nature, 2012)
      Solar radiation management could be used to offset some or all anthropogenic radiative forcing, with the goal of reducing some of the associated climatic change1, 2. However, the degree of compensation will vary, with ...
    • A multi-model assessment of regional climate disparities caused by solar geoengineering 

      Kravitz, Ben; MacMartin, Douglas G; Robock, Alan; Rasch, Philip J; Ricke, Katharine L; Cole, Jason N S; Curry, Charles L; Irvine, Peter J; Ji, Duoying; Keith, David; Egill Kristjánsson, Jón; Moore, John C; Muri, Helene; Singh, Balwinder; Tilmes, Simone; Watanabe, Shingo; Yang, Shuting; Yoon, Jin-Ho (IOP Publishing, 2014)
      Global-scale solar geoengineering is the deliberate modification of the climate system to offset some amount of anthropogenic climate change by reducing the amount of incident solar radiation at the surface. These changes ...