A Compact History of Urban Climatology & Planning
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The Scientist, Spring 2008
San Jose State University SJSU ScholarWorks The Scientist (College of Science) College of Science Spring 1-1-2008 The Scientist, Spring 2008 San Jose State University, College of Science Follow this and additional works at: https://scholarworks.sjsu.edu/scientist Recommended Citation San Jose State University, College of Science, "The Scientist, Spring 2008" (2008). The Scientist (College of Science). 2. https://scholarworks.sjsu.edu/scientist/2 This Newsletter is brought to you for free and open access by the College of Science at SJSU ScholarWorks. It has been accepted for inclusion in The Scientist (College of Science) by an authorized administrator of SJSU ScholarWorks. For more information, please contact [email protected]. Volume 12, Number 1 Spring 2008 College of Science San José State University The Scientist Message from the Dean Inside this issue: It’s been a busy I am also very pleased to an- Message from the 1 year here at the College of nounce that Dr. Singmaster Dean Science. Building on the has been designated the Geology: 2 great work of a planning SJSU Professor of the Year, a The Millers We are very pleased team made up of faculty, well deserved honor recog- to welcome our new Develop- Michael Graham: staff, and students that met nizing her years of selfless ment officer, Carol Beattie, 2 Kelp Discovery at a retreat at Asilomar a dedication to our students, who joined the university ad- year ago, we have nearly as well as her remarkable vancement staff in January. Physics and finalized plans for a College- teaching abilities. Carol has extensive experi- Astronomy 3 wide advising center, which We are continuing to ence in industry, consulting 2007 Highlights we hope will turn into a one- develop Professional Science and working with non-profits stop-shop for students in all Master’s programs that are such as the Children’s Health Mathematics News 4 departments of the college. -
Improving City Vitality Through Urban Heat Reduction with Green Infrastructure and Design Solutions: a Systematic Literature Review
buildings Review Improving City Vitality through Urban Heat Reduction with Green Infrastructure and Design Solutions: A Systematic Literature Review Helen Elliott, Christine Eon and Jessica K. Breadsell * Curtin University Sustainability Policy Institute, School of Design and the Built Environment, Curtin University, Building 209 Level 1, Kent St. Bentley, Perth, WA 6102, Australia; [email protected] (H.E.); [email protected] (C.E.) * Correspondence: [email protected] Received: 29 September 2020; Accepted: 23 November 2020; Published: 27 November 2020 Abstract: Cities are prone to excess heat, manifesting as urban heat islands (UHIs). UHIs impose a heat penalty upon urban inhabitants that jeopardizes human health and amplifies the escalating effects of background temperature rises and heatwaves, presenting barriers to participation in city life that diminish interaction and activity. This review paper investigates how green infrastructure, passive design and urban planning strategies—herein termed as green infrastructure and design solutions (GIDS)—can be used to cool the urban environment and improve city vitality. A systematic literature review has been undertaken connecting UHIs, city vitality and GIDS to find evidence of how qualities and conditions fundamental to the vitality of the city are diminished by heat, and ways in which these qualities and conditions may be improved through GIDS. This review reveals that comfortable thermal conditions underpin public health and foster activity—a prerequisite for a vital city—and that reducing environmental barriers to participation in urban life enhances physical and mental health as well as activity. This review finds that GIDS manage urban energy flows to reduce the development of excess urban heat and thus improve the environmental quality of urban spaces. -
Planning with Urban Climate in Different Climatic Zones
GEOGRAPHICALIA (2010), 57, 5-39 PLANNING WITH URBAN CLIMATE IN DIFFERENT CLIMATIC ZONES Maria-Joao Alcoforado* Centro de Estudos Geográficos Instituto de Geografia e Ordenamento do Território (IGO/UL) - University of Freiburg [email protected] Andreas Matzarakis Meteorological Institute - University of Freiburg [email protected] Resumen: Se discuten primero los principales cambios climáticos indu- cidos por los asentamientos, con el fin de establecer los principales obje- tivos de este trabajo: mostrar la importancia de la información climática para la planificación urbana y hacer hincapié en que las medidas ade- cuadas “para planificar y construir con el clima” varían de acuerdo con el clima del área donde está localizada la ciudad. Los balances de radia- ción y energía urbanos, la isla de calor, las condiciones del viento, la contaminación del aire y el confort térmico se tratan en detalle. También son revisados los estudios de las últimas décadas que consideran los beneficios económicos y para la salud de la utilización de información climática. La consideración del clima urbano debe formar parte de los procesos de ordenamiento territorial para lograr una mejor “calidad del clima” en los asentamientos. Se proponen también medidas que pueden reducir los efectos negativos o aprovechar las ventajas de urbanizar una zona basándose en su clima (frío, cálido y húmedo, cálido y árido, con- trastes estacionales del clima). Palabras clave: clima urbano, planificación, macroclima, microclima, cambio climático. Abstract: The main climatic changes induced by settlements are dis- cussed first, in order to introduce the main objectives of this paper: to show the importance of urban climate information for planning and to * Miembro del Jury International de Géographie “Vautrin Lud”. -
Urban Planning and Urban Design
5 Urban Planning and Urban Design Coordinating Lead Author Jeffrey Raven (New York) Lead Authors Brian Stone (Atlanta), Gerald Mills (Dublin), Joel Towers (New York), Lutz Katzschner (Kassel), Mattia Federico Leone (Naples), Pascaline Gaborit (Brussels), Matei Georgescu (Tempe), Maryam Hariri (New York) Contributing Authors James Lee (Shanghai/Boston), Jeffrey LeJava (White Plains), Ayyoob Sharifi (Tsukuba/Paveh), Cristina Visconti (Naples), Andrew Rudd (Nairobi/New York) This chapter should be cited as Raven, J., Stone, B., Mills, G., Towers, J., Katzschner, L., Leone, M., Gaborit, P., Georgescu, M., and Hariri, M. (2018). Urban planning and design. In Rosenzweig, C., W. Solecki, P. Romero-Lankao, S. Mehrotra, S. Dhakal, and S. Ali Ibrahim (eds.), Climate Change and Cities: Second Assessment Report of the Urban Climate Change Research Network. Cambridge University Press. New York. 139–172 139 ARC3.2 Climate Change and Cities Embedding Climate Change in Urban Key Messages Planning and Urban Design Urban planning and urban design have a critical role to play Integrated climate change mitigation and adaptation strategies in the global response to climate change. Actions that simul- should form a core element in urban planning and urban design, taneously reduce greenhouse gas (GHG) emissions and build taking into account local conditions. This is because decisions resilience to climate risks should be prioritized at all urban on urban form have long-term (>50 years) consequences and scales – metropolitan region, city, district/neighborhood, block, thus strongly affect a city’s capacity to reduce GHG emissions and building. This needs to be done in ways that are responsive and to respond to climate hazards over time. -
Government: the View from Washington, DC
THIS IS THE TEXT OF AN ESSAY IN THE WEB SITE “THE DISCOVERY OF GLOBAL WARMING” BY SPENCER WEART, HTTP://WWW.AIP.ORG/HISTORY/CLIMATE. JULY 2007. HYPERLINKS WITHIN THAT SITE ARE NOT INCLUDED IN THIS FILE. FOR AN OVERVIEW SEE THE BOOK OF THE SAME TITLE (HARVARD UNIV. PRESS, 2003). COPYRIGHT © 2003-2007 SPENCER WEART & AMERICAN INSTITUTE OF PHYSICS. Government: The View from Washington, DC The money that paid for research on climate change came mostly from governments. Governments were also central to any practical actions that might address global warming. Following the Second World War, the United States Federal government funded many kinds of research, much of it connected to Cold War concerns, and some of this happened to relate to climate change. During the 1960s, the government created major agencies for space, atmospheric, and ocean science, and in the 1970s, as public concern for the environment mounted, the agencies increasingly supported research targeted directly at climate change. But climate scientists were too few and disorganized to push through a unified national research program. Their budgets, divided among different agencies, would rise for a few years and then stagnate. During the 1980s, the funding and the science itself came under attack. The technical question of whether climate change might be a threat got caught up in political battles between pro-regulation environmentalists and anti-government conservatives. Demands for policies to mitigate global warming found little support among American politicians, who thought the ideas were politically unfeasible if not downright pernicious. (This essay covers only the United States government—the most important by far, in terms of influence and domestic greenhouse gas production. -
Urban Clmatology and Its Relevance to Urban Design
WORLD METEOROLOGICAL ORGANIZATION TECHNICAL NOTE No. 149 URBAN CLMATOLOGY AND ITS RELEVANCE TO URBAN DESIGN by T. J. Chandler Prepared with the support of the United Nations Environment Programme (UNEP) WMO - No. 438 Secrétariat of the World Meteorological Organisation - Ceneva - Switzerland THE WMO The World Meteorological Organization (WMO) is a specialized agency of the United Nations of wlùch 145 States and Territories are Members. It was created: — To facilitate international co-operation in the establishment of networks of stations for making meteorological and geophysical observations and centres to provide meteoro logical services and observations; — To promote the establishment and maintenance of Systems for the rapid exchange of meteorological information; — To promote standardization of meteorological observations and ensure the uniform publication of observations and statistics; — To further the application of meteorology to aviation, shipping, water problems, agri culture, and other human activities; — To encourage research and training in meteorology. The machinery of the Organization consists of the following bodies: The World Meteorological Congress, the suprême body of the Organization, brings together the delegates of ail Members once every fo\ir years to détermine gênerai policies for the fulhlmcnt of the purposes of the Organization, to adopt Technical Régulations relating to international meteorological practicc and to détermine the WMO programme. The Executive Commitlee is composed of 24 directors of national Meteorological Services and meets at lcast once a year to conduct the activities of the Organization and to implement the décisions taken by its Members in Congress, to study and makc recommandations on matters affecting international meteorology and the opération of meteorological services. -
The Dilemma of Reticence: Helmut Landsberg, Stephen Schneider, and Public Communication of Climate Risk, 1971-1976
History of Meteorology 6 (2014) 53 The Dilemma of Reticence: Helmut Landsberg, Stephen Schneider, and public communication of climate risk, 1971-1976 Gabriel Henderson Aarhus University Aarhus, Denmark “Most of the crucial issues of human survival that will confront humanity over the next few decades will call for ethical and political value judgments – decisions on how to act in the face of uncertainties. … Human value judgments are too important to be left exclusively to the experts.” – Stephen Schneider1 “Science is not as objective as some people think. Often human value judgments (or even prejudices) make things move as much as curiosity or the search for answers as to ‘why.’” – Helmut Landsberg2 During the tumultuous mid-1970s, when energy and food shortages, environmental pollution, and political instability induced suspicions that America was increasingly susceptible to increased climatic instability, American climatologists Helmut Landsberg and Stephen Schneider disagreed strongly on whether scientists should engage the public about the future risks and urgency of climate change. On the one hand, Schneider, a young climate modeler with the National Center for Atmospheric Research (NCAR), expressed explicitly an unwillingness to embrace reticence as an appropriate response to the risks of climate change. To illustrate the gravity of the situation, he frequently resorted to vivid and frightening metaphors to convince the public and policy makers that I want to express my gratitude to Ruth Morgan and the anonymous reviewer who contributed thoughtful suggestions to improve and refine the scope of this article. I would also like to thank my colleagues at the Center for Science Studies at Aarhus University for their suggestions to strengthen my narrative and flow of argument: Dania Achermann, Matthias Heymann, and Janet Martin-Nielsen. -
E. Gregory Mcpherson
Cooling Urban Heat Islands with Sustainable Landscapes E. Gregory McPherson Introduction The rapid urbanization of U.S. cities during the past fifty years has been associated with a steady increase in downtown temperatures of about o.1° to 1.1°C (0.25° to 2°F) per decade. Because the demand of cities for electricity increases by about 3 to 4 percent for every increase of one degree Celsius (1.5 to ?- percent per degree Fahrenheit), about 3 to 8 percent of current electric demand for cooling is used just to compensate for this urban heat-island effect (Akbari et al. 1990). Other implications of growing urban heat islands include -increases in. carbon dioxide emissions from power plants, municipal water demand, concentrations of smog, and human discomfort and disease. Global warming, which may double the rate of urban temperature rise, could accentuate these environmental problems. More- over, the accelerating world trend toward urbanization may expand the local influence of urban heat islands, as megalopolises begin to modify regional climate and airflow (Tyson et al. 1973). This paper is directed to the policy-makers who are responsible for urban design and its climatological consequences. It summarizes our current knowledge on the structure, energetics, and mitigation of the urban heat island. Special attention is given to physical features of the environment that can be easily manip- ulated, particularly vegetation. Prototypical designs illustrate how concepts of sustainable landscapes and urban climatology can be applied to counteract urban warming in street canyons, parking lots, urban parks, and residential streets. In a previous study (McPherson 1990a), sustainable landscapes were defined as ·multi- functional, low maintenance, biologically diverse, and expressive of "place." l 152 Urbanization and Terrestrial Ecosystems I Urban Heat Islands •I Warmer air temperatures in cities compared to air temperatures in surrounding rural areas is the principal diagnostic feature of the urban heat island. -
Strong Contributions of Local Background Climate to Urban Heat Islands
LETTER doi:10.1038/nature13462 Strong contributions of local background climate to urban heat islands Lei Zhao1,2, Xuhui Lee1,2, Ronald B. Smith3 & Keith Oleson4 The urban heat island (UHI), a common phenomenon in which sur- 3.0 6 0.3 kelvin (mean and standard error) in humid climates but face temperatures are higher in urban areas than in surrounding decreasing DT by 1.5 6 0.2 kelvin in dry climates. In the humid east- rural areas, represents one of the most significant human-induced ern United States, there is evidence of higher DT in drier years. These changes to Earth’s surface climate1,2. Even though they are localized relationships imply that UHIs will exacerbate heatwave stress on human hotspots in the landscape, UHIs have a profound impact on the health in wet climates where high temperature effects are already lives of urban residents, who comprise more than half of the world’s compounded by high air humidity6,7 and in drier years when pos- population3. A barrier to UHI mitigation is the lack of quantitative itive temperature anomalies may be reinforced by a precipitation– attribution of the various contributions to UHI intensity4 (expressed temperature feedback8. Our results support albedo management as as the temperature difference between urban and rural areas, DT). a viable means of reducing DT on large scales9,10. A common perception is that reduction in evaporative cooling in The conversion of natural land to urban land causes several notable urban land is the dominant driver of DT (ref. 5). Here we use a cli- perturbations to the Earth’s surface energy balance. -
News and Nntes
Bulletin American Meteorological Society pictures will be required to extract the wealth of data and tracked. The cloud systems comprising the Inter- on cloud developments, movements and dissipation. tropical Convergence Zone can be observed and studied. A preliminary analysis of the cloud observations from Tropical storms such as hurricanes and typhoons can ATS-I indicates that detailed viewing of short-lived be monitored continuously. The rapid changes associated weather systems and phenomena from synchronous alti- with storms and frontal systems can be readily observed tude is feasible. The observation of cloud systems over and assessed. The continuous monitoring of weather the tropical ocean will assist in the study of the heat systems from synchronous satellites will be an important budget of the atmosphere. Mesoscale phenomena such as adjunct to the ESS A and Nimbus satellites for observing thunderstorms, possibly even tornadoes, can be identified and studying the Earth's weather. news and nntes New institute director, University of Miami of Marine Science is planned with several joint appointments, common graduate courses in fluid dynamics, statistics, and Dr. Eric B. Kraus, formerly similar basic subjects, as well as access to research vessels and of Woods Hole Oceano- an instrumented field site for wave and air-sea interaction graphic Institution, has be- studies near Abaco Island in the Bahamas. come director of the Institute of Atmospheric Science, Uni- versity of Miami. He has also National Academy of Sciences building named been appointed professor of meteorology at the Univer- The new building being constructed for the National Acad- sity's Institute of Marine emy of Sciences on property of George Washington University Science. -
Beno Gutenberg
NATIONAL ACADEMY OF SCIENCES B E N O G U T E N B ER G 1889—1960 A Biographical Memoir by L E O N KNOP OFF Any opinions expressed in this memoir are those of the author(s) and do not necessarily reflect the views of the National Academy of Sciences. Biographical Memoir COPYRIGHT 1999 NATIONAL ACADEMIES PRESS WASHINGTON D.C. Courtesy of the California Institute of Technology Archives, Pasadena BENO GUTENBERG June 4, 1889–January 25, 1960 BY LEON KNOPOFF ENO GUTENBERG WAS THE foremost observational seismolo- Bgist of the twentieth century. He combined exquisite analysis of seismic records with powerful analytical, inter- pretive, and modeling skills to contribute many important discoveries of the structure of the solid Earth and its atmo- sphere. Perhaps his best known contribution was the pre- cise location of the core of the Earth and the identification of its elastic properties. Other major contributions include the travel-time curves; the discovery of very long-period seis- mic waves with large amplitudes that circle the Earth; the identification of differences in crustal structure between continents and oceans, including the discovery of a signifi- cantly thin crust in the Pacific; the discovery of a low-veloc- ity layer in the mantle (which he interpreted as the zone of decoupling of horizontal motions of the surficial parts from the deeper parts of the Earth); the creation of the magni- tude scale for earthquakes; the relation between magnitudes and energies for earthquakes; the famous universal magni- tude-frequency relation for earthquake distributions; the first density distribution for the mantle; the study of the tem- perature distribution in the Earth; the understanding of microseisms; and the structure of the atmosphere. -
J3.8 Urban Heat Islands and Environmental Impact
J3.8 URBAN HEAT ISLANDS AND ENVIRONMENTAL IMPACT Suryadevara S. Devi* Andhra University, Visakhapatnam, India ABSTRACT pollution dispersal which will result in an increase in pollution concentration. The urban heat island The rapid urbanization and industrialization have adds to the development and self sustenance of a brought about microclimatic changes particularly ‘dust-dome’ and a ‘hazehood” of contaminating with regard to its thermal structure. The well particles. It also helps in setting up of the documented climatic modification of the city is urban recirculation of pollutants thus making the pollution heat island. The present paper discusses the nature problems more serious. With the increasing and intensity of heat islands at Visakhapatnam, the emphasis on planning for healthier ad comfortable tropical coastal city of South India. A detailed study physical environments in cities, the need to was carried out with regard to urban heat islands recognise the role of cities in causing and meeting for the last ten years. The study reveals that the the challenges posed by climate change has intensity of heat island varies from 20C to 40C and become greater. The very presence of a city affects intensity is high during winter season compared to the local climate and as the city changes, so does, summer and monsoon seasons. At Visakhapatnam its climate. The modified climate adds to the city the formation of heat island is controlled by residents’ discomfort and even ill-health. The well topography and urban morphology. The land and documented climatic modification of the city is urban sea breeze circulation also interacts with the heat heat island.