Cubiertas verdes

Green Roofs in the New York Metropolitan Region Research Report

180 160 140 120 100 80 60 40 20 0
7/1/2003 7/6/2003 7/11/2003 7/16/2003 7/21/2003

Temperature (°F)

Standard roof Green roof

Date

Editors Cynthia Rosenzweig, Stuart Gaffin, and Lily Parshall

Columbia University Center for Climate Systems Research NASA Goddard Institute for Space Studies

Editors
CynthiaRosenzweig, NASA/Goddard Institute for Space Studies and Columbia University Stuart Gaffin, Center for Climate Systems Research, Columbia University Lily Parshall, Center for Climate Systems Research, Columbia University

Authors
Kenneth Acks, The Cost-Benefit Group, LLC David Beattie, Pennsylvania State University Robert Berghage, Pennsylvania State University Daniel Braman, Paul D.Schreiber High School, Port Washington, NY Jennifer Cox, Hunter College, City University of New York and Regional Plan Association Stuart Gaffin, Center for Climate Systems Research, Columbia University Daniel Hillel, Columbia Center for Climate Systems Research, Columbia University Sara Hodges, Hunter College, City University of New York Paul Mankiewicz, Gaia Institute Franco Montalto, eDesignDynamics, LLC Gregory O’Keeffe, Columbia University Gary Ostroff, Hydroqual, Inc. Lily Parshall, Center for Climate Systems Research, Columbia University Joyce E. Rosenthal, Mailman School of Public Health and Graduate School of Architecture, Planning, and Preservation, Columbia University Cynthia Rosenzweig, NASA/Goddard Institute for Space Studies and Columbia University Karla Rothstein,Columbia University Graduate School of Architecture, Planning, and Preservation and SR+T Architects William D. Solecki, Hunter College, City University of New York Debra Tillinger, Barnard College, Columbia University Joel Towers, New School University/Parsons School of Design and SR+T Architects

External Reviewers
Chris Behr, eDesign Dynamics, LLC Jacqueline Floyd, Lamont Doherty EarthObservatory, Columbia University

Acknowledgements
The initial phase of this work was organized in collaboration with the New York Ecological Infrastructure Study. We acknowledge EarthPledge, whose main representative was Colin Cheney; his contributions are gratefully recognized. We highlight the role of Lily Parshall, who served as Study Coordinator. We also thank José Mendoza and ChristopherShashkin for production assistance. Finally, we acknowledge with appreciation the work of all the researchers and their respective organizations who contributed to this report.

Table of Contents
Preface…….……………………………………………………………………………......................ii Executive Summary…………………………………………………………………...….................iii Introduction and StudyMethods…………………………………………………............................1 Cynthia Rosenzweig, Stuart Gaffin, and Lily Parshall I. Data Analysis and Modeling Energy Balance Modeling Applied to a Comparison of White Roof and Green Roof Cooling Efficiency…………………………………………...............................................................7 Stuart Gaffin, Lily Parshall, Gregory O’Keeffe, Daniel Braman, David Beattie, and Robert Berghage Potential Impact of Green Roofs on the Urban Heat IslandEffect..…………................................15 William D. Solecki, Cynthia Rosenzweig, Jennifer Cox, Lily Parshall, Joyce Rosenthal, and Sara Hodges Hydrological Functions of Green Roofs in New York City..…………………................................27 Debra Tillinger, Gary Ostroff, David Beattie, Robert Berghage, Paul Mankiewicz, and Franco Montalto II. Green Roof Research Station Green Roof ResearchStation: Rationale, Experimental Design, Equipment, and Estimated Costs……………………………………………………………...................................37 Cynthia Rosenzweig, Lily Parshall, and Daniel Hillel III. Socio-economic Research A Framework for Cost-Benefit Analysis: Initial Estimates..………………….................................41 Kenneth Acks

Epilogue: Urban Ecological...