edu.ucar.opensky::articles:25127 UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact 2025-12-24T22:54:54.422782 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) https://n2t.org/ark:/85065/d7qr51ph https://doi.org/10.5065/39C5-Z211 https Related Dataset #1 NCEP ADP Global Upper Air Observational Weather Data, October 1999 - continuing https://doi.org/10.5065/G4RC-1N91 https Related Dataset #2 NCEP North American Mesoscale (NAM) 12 km Analysis Estimating heat-related exposures and urban heat island impacts: A case study for the 2012 Chicago heatwave 2022-01-01T00:00:00Z publication https://n2t.org/ark:/85065/d7qr51ph https://doi.org/10.1029/2021GH000535 Chen, K. author Newman, Andrew J. author Huang, M. author Coon, C. author Darrow, L. A. author Strickland, M. J. author Holmes, H. A. author UCAR/NCAR - Library publisher Accelerated urbanization increases both the frequency and intensity of heatwaves (HW) and urban heat islands (UHIs). An extreme HW event occurred in 2012 summer that caused temperatures of more than 40 degrees C in Chicago, Illinois, USA, which is a highly urbanized city impacted by UHIs. In this study, multiple numerical models, including the High Resolution Land Data Assimilation System (HRLDAS) and Weather Research and Forecasting (WRF) model, were used to simulate the HW and UHI, and their performance was evaluated. In addition, sensitivity testing of three different WRF configurations was done to determine the impact of increasing model complexity in simulating urban meteorology. Model performances were evaluated based on the statistical performance metrics, the application of a multi-layer urban canopy model (MLUCM) helps WRF to provide the best performance in this study. HW caused rural temperatures to increase by similar to 4 degrees C, whereas urban Chicago had lower magnitude increases from the HW (similar to 2-3 degrees C increases). Nighttime UHI intensity (UHII) ranged from 1.44 to 2.83 degrees C during the study period. Spatiotemporal temperature fields were used to estimate the potential heat-related exposure and to quantify the Excessive Heat Factor (EHF). The EHF during the HW episode provides a risk map indicating that while urban Chicago had higher heat-related stress during this event, the rural area also had high risk, especially during nighttime in central Illinois. This study provides a reliable method to estimate spatiotemporal exposures for future studies of heat-related health impacts. UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact PDF Text theme Resource Type 2016-01-01T00:00:00Z publication Copyright author(s). This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License. None eng geoscientificInformation