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3768 JOURNAL OF CLIMATE VOLUME 20 Midsummer Gap Winds and Low-Level Circulation over the Eastern Tropical Pacific ROSARIO ROMERO-CENTENO,JORGE ZAVALA-HIDALGO, AND G. B. RAGA Centro de Ciencias de la Atmosfera, Universidad Nacional Autonoma de Mexico, Mexico City, Mexico (Manuscript received 12 October 2005, in final form 14 November 2006) ABSTRACT The low-level seasonal and intraseasonal wind variability over the northeastern tropical Pacific (NETP), its relationship with other variables, and the connection with large- and middle-scale atmospheric patterns are analyzed using a suite of datasets. Quick Scatterometer (QuikSCAT) wind data show that the low-level circulation over the NETP is mainly affected by the northerly trades, the southerly trades, and the wind jets crossing through the Tehuantepec, Papagayo, and Panama mountain gaps. The seasonal and intraseasonal evolution of these wind systems determines the circulation patterns over the NETP, showing predominant easterly winds in winter and early spring and wind direction reversals in summer over the central region of the NETP. During summer, when southerly trades are the strongest and reach their maximum northward penetration, weak westerlies are observed in June, easterlies in July–August, despite that strong southerlies tend to turn eastward, and again westerlies in September–October. This circulation pattern appears to be related to the Tehuantepec and Papagayo jets, which slightly strengthen during midsummer favored by the westward elongation and intensification of the Azores–Bermuda high (ABH). This ABH evolution induces an across-gap pressure gradient over the Isthmus of Tehuantepec favoring the generation of the jet and a meridional sea level pressure (SLP) gradient in the western Caribbean that favors the funneling of the trade winds through the Papagayo gap. -
Challenges for the Commercialization of Airborne Wind Energy Systems
first save date Wednesday, November 14, 2018 - total pages 53 Reaction Paper to the Recent Ecorys Study KI0118188ENN.en.pdf1 Challenges for the commercialization of Airborne Wind Energy Systems Draft V0.2.2 of Massimo Ippolito released the 30/1/2019 Comments to [email protected] Table of contents Table of contents Abstract Executive Summary Differences Between AWES and KiteGen Evidence 1: Tether Drag - a Non-Issue Evidence 2: KiteGen Carousel Carousel Addendum Hypothesis for Explanation: Evidence 3: TPL vs TRL Matrix - KiteGen Stem TPL Glass-Ceiling/Threshold/Barrier and Scalability Issues Evidence 4: Tethered Airfoils and the Power Wing Tethered Airfoil in General KiteGen’s Giant Power Wing Inflatable Kites Flat Rigid Wing Drones and Propellers Evidence 5: Best Concept System Architecture KiteGen Carousel 1 Ecorys AWE report available at: https://publications.europa.eu/en/publication-detail/-/publication/a874f843-c137-11e8-9893-01aa75ed 71a1/language-en/format-PDF/source-76863616 or https://www.researchgate.net/publication/329044800_Study_on_challenges_in_the_commercialisatio n_of_airborne_wind_energy_systems 1 FlyGen and GroundGen KiteGen remarks about the AWEC conference Illogical Accusation in the Report towards the developers. The dilemma: Demonstrate or be Committed to Design and Improve the Specifications Continuous Operation as a Requirement Other Methodological Errors of the Ecorys Report Auto-Breeding Concept Missing EroEI Energy Quality Concept Missing Why KiteGen Claims to be the Last Energy Reservoir Left to Humankind -
A Case Study in the Social and Historical Context of Wind Energy Development in Southern Mexico
enticed by the wind A Case Study in the Social and Historical Context of Wind Energy Development in Southern Mexico 1 WILSON CENTER LEADERSHIP The Honorable Jane Harman, Director, President, and CEO BOARD OF TRUSTEES The Honorable Thomas R. Nides, Chairman Public members: The Honorable James H. Billington, Librarian of Congress The Honorable John F. Kerry, Secretary, U.S. Department of State David Skorton, Secretary, The Smithsonian Institution The Honorable Arne Duncan, Secretary of Education The Honorable David Ferriero, Archivist of the United States William Adams, Chairman, National Endowment for the Humanities The Honorable Sylvia Mathews Burwell, Secretary, U.S. Department of Health and Human Services Designated Appointee of the President from within the Federal Government The Honorable Fred P. Hochberg, Chairman and President, Export-Import Bank of the United States Private Citizen members: Peter Beshar, John T. Casteen III, Thelma Duggin, Lt. Gen. Susan Helms, USAF (Ret.), The Honorable Barry S. Jackson, Nathalie Rayes, Earl W. Stafford, Jane Watson Stetson WILSON NATIONAL CABINET The Honorable Joseph Gildenhorn and Willem Kooyker Mrs. Alma Gildenhorn, Co-Chairs The Honorable Raymond Learsy and Eddie and Sylvia Brown *Ms. Melva Bucksbaum Dr. Armeane and Mrs. Mary Choksi Linda B. and Tobia G. Mercuro The Honorable Sue Cobb and The Honorable Thomas R. Nides The Honorable Chuck Cobb Nathalie Rayes Lester Crown Wayne Rogers Thelma Duggin B. Francis Saul II Judi Flom Ginny and L.E. Simmons Sander R. Gerber Diana Davis Spencer Harman Family Foundation Jane Watson Stetson Susan Hutchison Leo Zickler Frank F. Islam *Deceased The Winds of History In 1946, Basil Nikiforoff et al. -
What If the Smartest Decision Was to Invest in the Planet
WHAT IF THE SMARTEST DECISION WAS TO INVEST IN THE ¿ PLANET INTEGRATED REPORT 2019 WHAT IF THE SMARTEST DECISION WAS TO INVEST IN THE ¿ PLANET INTEGRATED REPORT 2019 I Index 4 6 22 Letter At a glance The first company of a new from the Chairman sector The future is challenging 24 Business as Unusual 32 Investing in the planet 34 Experts in designing a better planet 40 INTEGRATED REPORT 2019 118 154 156 The value of doing About this report Appendices things right _ Effective, strategic, Appendix I 156 customised governance 118 Appendix II 170 Exemplary conduct under a compliance framework 138 Integrated focus on risk control and management 140 Diverse talent with expertise in designing a better planet 144 Innovation to lead the change 148 174 Leading the way to a sustainable, decarbonised Independent Assurance economy 152 Report I Letter from the Chairman Letter from the Chairman José Manuel Entrecanales CHAIRMAN OF ACCIONA ACCIONA's 2019 Integrated Report is being published in volunteers around the world who provided support and the midst of one of the most acute crises that humanity assistance where we were required. There are no borders has faced in recent history. This situation has created in this crisis, no states, no north or south. great uncertainty and severely tested the mechanisms that our society and its institutions have to resist and Situations like the one we are experiencing encourage 4 overcome adversity, however unexpected and unknown. us to persevere in our main mission as a company, focused on strengthening the basic mechanisms that My thoughts are with everyone who has lost a loved one make societies work. -
Vattenfall Offshore Wind Portfolio
Chapter 9: Renewables 1. BWK: Erneuerbare Energien – Stand 2013 (Auszug) (2014) 2. Scientific American: A Path to Sustainable Energy by 2030 (2009) 3. Vattenfall: Wind Energy in Europe (2011) 4. NREL: 2010 Cost of Wind Energy Review – Synopsis (2012) 5. Alstom Wind Turbines for Onshore and Offshore Operation (2014) 6. Analysis of the Conversion of Ocean Wind Power into Hydrogen (2013) 7. Design and Experimental Characterization of a Pumping Kite Power System 8. MPC for airborne wind energy generation (2013) 9. Laddermill sail – a new concept in sailing (2007) 10. BWK: Effizienter Strom aus der Sonne (2011) 11. Concentrated Solar Power Solutions by Alstom 12. Design and implementation of an innovative 190ºC solar ORC pilot plant at the PSA (2011) 13. Tidal Power Solutions by Alstom 14. Performance Analysis of OTEC Plants With Multilevel Organic Rankine Cycle and Solar Hybridization (2013) 15. Wege zur nachhaltigen Energieversorgung – Herausforderungen an Speicher und thermische Kraftwerke (2012) 16. BWK: Energiespeicher (2015) 17. Wasserstoff – Das Speichermedium für erneuerbare Energien (2012) 18. Neuer Entwicklungsansatz bei Druckluftspeichern (2013) 19. Druckluftspeicherkraftwerk mit Dampfkreislauf (2016) 20. Wirtschaftliche Bewertung von Stromspeichertechnologien (2012) ENERGY A PATH TO SUSTAINABLE ENERGY BY 2030 Wind, water and n December leaders from around the world for at least a decade, analyzing various pieces of will meet in Copenhagen to try to agree on the challenge. Most recently, a 2009 Stanford solar technologies Icutting back greenhouse gas emissions for University study ranked energy systems accord- can provide decades to come. The most effective step to im- ing to their impacts on global warming, pollu- 100 percent of the plement that goal would be a massive shift away tion, water supply, land use, wildlife and other from fossil fuels to clean, renewable energy concerns. -
Wind Energy Analysis in Use and Implementation in Mexico
ISSN 0798 1015 HOME Revista ESPACIOS ÍNDICES / Index A LOS AUTORES / To the AUTORS Vol. 41 (Issue 12) Year 2020. Page 21 Wind energy analysis in use and implementation in Mexico Análisis de la energía eólica en uso e implementación en México SILVA, Jorge A. 1 Received: 24/12/2019 • Approved: 24/03/2020 • Published 09/04/2020 Contents 1. Introduction 2. Methodology 3. Results 4. Conclusions Bibliographic references ABSTRACT: RESUMEN: There is a lack of research into the way that wind power can be Hay una falta de investigación sobre la forma en que la energía used in Mexico. The purpose of this systematic literature review is eólica se puede utilizar en México. El objetivo de esta revisión to highlight how the government of Mexico has developed and sistemática de la literatura es destacar cómo el gobierno de implemented projects aimed at harnessing wind power. The México ha desarrollado e implementado proyectos destinados a PRISMA methodology was implemented. Results showed that aprovechar la energía eólica. Se implementó la metodología wind energy is a growing industry in Mexico and the nation has PRISMA. Los resultados mostraron que la energía eólica es una the potential to become a force in Central America with regards industria en crecimiento en México y la nación tiene el potencial to wind energy generation. de convertirse en una fuerza en Centroamérica con respecto a la Keywords: Clean energies, renewable energies, wind energy. generación de energía eólica. Palabras clave: Energías limpias, energías renovables, energía eólica. 1. Introduction Ever since the advent of the 21st century, scholars and practitioners alike have documented and raised concerns with regard to issues surrounding energy security and environmental pollution .The concerns have prompted private and public entities to develop and implement renewable energy sources that are not only environmentally friendly but also those which can help in cutting down on costs incurred during the creation of energy. -
Design of a High Altitude Wind Power Generation System
A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science Design of a High Altitude Wind Power Generation System Imran Aziz Linköping University Institute of Technology Department of Management and Engineering Division of Machine Design Linköping University SE-581 83 Linköping Sweden 2013 ISRN: LIU-IEI-TEK-A--13/01725—SE Acknowledgements The work presented in this thesis has been carried out at the Division of Machine Design at the Department of Management and Engineering (IEI) at Linköping University, Sweden. I am very grateful to all the people who have supported me during the thesis work. First of all, I would like to express my sincere gratitude to my supervisors Edris Safavi, Doctoral student and Varun Gopinath, Doctoral student, for their continuous support throughout my study and research, for their guidance and constant supervision as well as for providing useful information regarding the thesis work. Special thanks to my examiner, Professor Johan Ölvander, for his encouragement, insightful comments and liberated guidance has been my inspiration throughout this thesis work. Last but not the least, I would like to thank my parents, especially my mother, for her unconditional love and support throughout my whole life. Linköping, June 2013 Imran Aziz i Abstract One of the key points to reduce the world dependence on fossil fuels and the emissions of greenhouse gases is the use of renewable energy sources. Recent studies showed that wind energy is a significant source of renewable energy which is capable to meet the global energy demands. However, such energy cannot be harvested by today’s technology, based on wind towers, which has nearly reached its economical and technological limits. -
Exchange Implications of Obsidian Source Analysis from the Lower Rio Verde Valley, Oaxaca, Mexico Author(S): Arthur A
Society for American Archaeology Exchange Implications of Obsidian Source Analysis from the Lower Rio Verde Valley, Oaxaca, Mexico Author(s): Arthur A. Joyce, J. Michael Elam, Michael D. Glascock, Hector Neff and Marcus Winter Source: Latin American Antiquity, Vol. 6, No. 1 (Mar., 1995), pp. 3-15 Published by: Society for American Archaeology Stable URL: http://www.jstor.org/stable/971597 . Accessed: 20/05/2014 23:42 Your use of the JSTOR archive indicates your acceptance of the Terms & Conditions of Use, available at . http://www.jstor.org/page/info/about/policies/terms.jsp . JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range of content in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new forms of scholarship. For more information about JSTOR, please contact [email protected]. Society for American Archaeology is collaborating with JSTOR to digitize, preserve and extend access to Latin American Antiquity. http://www.jstor.org This content downloaded from 128.138.73.68 on Tue, 20 May 2014 23:42:30 PM All use subject to JSTOR Terms and Conditions l_ - EXCHANGE IMPLICATIONS OF OBSIDIAN SOURCE ANALYSIS FROM THE LOWER RIO VERDE VAT,T,1ZY,OAXACA, MEXICO Arthur A. Joyce, J. Michael Elam, Michael D. Glascock, Hector NeS, and Marcus Winter This article considersthe resultsof instrumentalneutron-activation analyses of 61 obsidianartifacts recoveredfrom excavations at four archaeologicalsites in the lower Rio Verdevalley on the Pacifc coast of Oaxaca, Mexico. Determinationsof sourcelocations of theseartifacts permit the examinationof changesin obsidianexchange patterns spanning the late Middle Formativeto the Classic period. -
Isthmus of Tehuantepec
UCRL-ID-126133 a Isthmus of Tehuantepec R. A. Miles DISCLAIMER This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsi- bility for the accuracy. completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its usc would not infringe privately owned rights. Refer- ence herein to any specific commercial product, process, or service by trade name, trademark manufacturer. or otherwise does not neccssarily constitute or imply its endorsement, rccom- mendation, or favoring by the United States Government or any agency thereof. The views and opinions of authors expressed herein do not necessarily state or reflect thosc of the United States Government or any agency thereof. This is an informal report intended primarily for internal or limited external distribution. The opinions and conclusions stated are those of the author and may or may not be those of the Laboratory. Work performed under the auspices of the U.S. Department of Energy by the Lawrence Livermore National Laboratory under Contract W-7405-ENG-48. DISCLAIMER Portions of this document mybe illegible in electronic image products. Images are produced from the best available original document. 25 March 1958 DECLASSIFICATION STAMP ON RWER / MJ3MORANDUM TO8 Distribution FROM : Robert A. Miles SUBjECTt Revised Ke?ort - Isthmus of Tehuantepec Enclosed for yotir information and retention is one copy of a preliminary report on the Isthus of Tehuantepec as a location for a non-military application of nuclear devices. -
Two Decades Under Windmills in La Venta, Mexico from an Annoyance to a Blessing – for Some
Two Decades Under Windmills in La Venta, Mexico From an Annoyance to a Blessing – for Some Gerardo A. Torres Contreras University of Sussex United Kingdom Draft paper prepared for the UNRISD Conference Overcoming Inequalities in a Fractured World: Between Elite Power and Social Mobilization 8–9 November 2018, Geneva, Switzerland The United Nations Research Institute for Social Development (UNRISD) is an autonomous research institute within the UN system that undertakes multidisciplinary research and policy analysis on the social dimensions of contemporary development issues. Through our work we aim to ensure that social equity, inclusion and justice are central to development thinking, policy and practice. UNRISD Palais des Nations 1211 Geneva 10 Switzerland [email protected] www.unrisd.org Copyright © United Nations Research Institute for Social Development This is not a formal UNRISD publication. The responsibility for opinions expressed in signed studies rests solely with their author(s), and availability on the UNRISD website (www.unrisd.org) does not constitute an endorsement by UNRISD of the opinions expressed in them. No publication or distribution of these papers is permitted without the prior authorization of the author(s), except for personal use. Abstract Scholarship touching on wind energy development in the Mexican case, especially in the Isthmus of Tehuantepec, overlooks the long-term uneven social effects resulting from this industry at the local level. This paper seeks to analyse the process through which wind energy has exacerbated patterns of rural social differentiation in La Venta – the town where the first wind energy project in Latin America was established in 1994. This differentiation has happened between landowners, and between landowners and landless people. -
Observations of Gulf of Tehuantepec Gap Wind Events from Quikscat: an Updated Event Climatology and Operational Model Evaluation
646 WEATHER AND FORECASTING VOLUME 25 Observations of Gulf of Tehuantepec Gap Wind Events from QuikSCAT: An Updated Event Climatology and Operational Model Evaluation MICHAEL J. BRENNAN,HUGH D. COBB III, AND RICHARD D. KNABB* NOAA/NWS/NCEP/National Hurricane Center, Miami, Florida (Manuscript received 26 June 2009, in final form 12 September 2009) ABSTRACT A climatology of gale- and storm-force gap wind events in the Gulf of Tehuantepec is constructed for the first time using 10 yr of ocean surface vector wind data from the SeaWinds scatterometer on board NASA’s Quick Scatterometer (QuikSCAT) satellite. These wind events are among the most severe that occur within the National Hurricane Center’s (NHC) area of marine forecasting responsibility outside of tropical cyclones. The 10-yr climatology indicates that on average 11.9 gale-force events and 6.4 storm-force events occur in the Gulf of Tehuantepec each cold season. About 84% of these events occur between November and March, with the largest number of gale-force events occurring in December. Storm-force events are most frequent in January. Operational numerical weather prediction model forecasts of these events from the NCEP Global Forecast System (GFS) and North American Mesoscale (NAM) models were evaluated during the 2006/07 cold season. Results show that neither model is able to consistently forecast storm-force Tehuantepec wind events; however, the models do have some ability to forecast gale-force events. The NAM model showed a significant increase in probability of detection over the GFS, possibly due to increased horizontal and vertical resolutions as well as differences in boundary layer mixing and surface flux schemes. -
1. Venture Capital and Private Equity
LBloomberg NewEnergyFinance |2011 EAGUE TABLE RESUltS BOOK >>>>>>>>>>>>> CL E A N E ne RGY RGY LE AGU E TA B L E S 2011 CONTENTS ///////////////////////////////////////////////////////////////////////////////////// INTRODUCTION................................................................................................................... 4 1. VENTURE CAPITAL & PRIVATE EQUITY.............................................................. 6 2. PUBLIC MARKETS.................................................................................................... 10 3. MERGERS & ACQUISITIONS................................................................................. 13 4. PROJECT FINANCE................................................................................................... 17 5. CLEAN ENERGY FUNDS......................................................................................... 22 6. CARBON MARKETS.................................................................................................. 24 appendiX ............................................................................................................................. 27 ABOUT us............................................................................................................................. 30 INTRODUCTION ///////////////////////////////////////////////////////////////////////////////////// 2010 – Global financial investment in clean energy rebounds to signal recovery from recession After a modest increase in 2009, total financial investment Now