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Journal article
Microclimatic implications of a large-scale green roof and high-rise redevelopment in New York City
Building and environment, v 250, 111113
15 Feb 2024
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
This paper quantifies the impacts of the Jacob K. Javits Convention Center (JJCC) green roof and the nearby redevelopment of Hudson Yards (Midtown West, Manhattan, New York City, NY) on the local microclimate. The analysis was performed using ENVI-met, a grid based, three-dimensional (3D) computational fluid dynamics model commonly used to simulate surface-plant-air interactions in urban settings. Using air temperature, relative humidity, and wind speed and direction measured onsite on July 22, 2014, a total of six simulations were run, comprising three different stages of redevelopment (e.g., in 2014, 2018, and 2021), with and without the JJCC green roof in place. Under the simulated climate conditions, the green roof reduced air temperature over the no-green roof (NoGR) condition, primarily on the north side of the JJCC. However, because of the nearby redevelopment, the cooling benefit provided by the roof decreased slightly over time. For example, at 1:00 p.m. the air temperature dropped from 0.75 K at roof level in 2014, to 0.65 K and 0.64 K in 2018 and 2021, respectively. Similarly, though to a lesser extent, the same trends were evident in the simulations at pedestrian level. The redevelopment of Hudson Yards reduced the sky view factor (SVF) and provided shading during the day, reducing daytime mean radiant temperature (MRT). However, the same buildings raised nighttime MRT. Together, the study provides insights into the growing understanding of how green roofs can impact the microclimate of complex urban environments.
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Details
- Title
- Microclimatic implications of a large-scale green roof and high-rise redevelopment in New York City
- Creators
- Bita Alizadehtazi - Drexel University, Civil, Architectural, and Environmental EngineeringJulian Stolper - Drexel University, Civil, Architectural, and Environmental EngineeringKatelyn Singh - Drexel UniversityFranco A. Montalto - Drexel University, Center for Public Policy
- Publication Details
- Building and environment, v 250, 111113
- Grant note
- NA15OAR4310147 / National Oceanic and Atmospheric Administration NOAA . 10/01/14 Supporting Regional Implementation of Integrated Climate Resilience: Consortium for Climate Risks in the Urban Northeast (CCRUN) Phase II $ 550,000 This research was funded principally by the Jacob K. Javits Convention Center, with additional support by the National Oceanic and Atmospheric Administration (NOAA) through Supporting Regional Implementation of Integrated Climate Resilience: Consortium for Climate Risks in the Urban Northeast (CCRUN) (NA15OAR4310147). The authors acknowledge contributions to this paper by Dr. Lauren Smalls-Mantey and Dr. Leena Shevade.
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Civil, Architectural, and Environmental Engineering; Center for Public Policy
- Web of Science ID
- WOS:001166909000001
- Scopus ID
- 2-s2.0-85184785394
- Other Identifier
- 991021861279904721
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- Web of Science research areas
- Construction & Building Technology
- Engineering, Civil
- Engineering, Environmental