dc.contributor.author | Hu, Leiqiu | |
dc.contributor.author | Monaghan, Andrew J. | |
dc.contributor.author | Brunsell, Nathaniel A. | |
dc.date.accessioned | 2016-11-30T19:01:35Z | |
dc.date.available | 2016-11-30T19:01:35Z | |
dc.date.issued | 2015-11 | |
dc.identifier.citation | Hu, L., Monaghan, A. J., & Brunsell, N. A. (2015). Investigation of Urban Air Temperature and Humidity Patterns during Extreme Heat Conditions Using Satellite-Derived Data. Journal of Applied Meteorology and Climatology, 54(11), 2245-2259. | en_US |
dc.identifier.uri | http://hdl.handle.net/1808/22098 | |
dc.description.abstract | Extreme heat is a leading cause of weather-related human mortality. The urban heat island (UHI) can magnify heat exposure in metropolitan areas. This study investigates the ability of a new MODIS-retrieved near-surface air temperature and humidity dataset to depict urban heat patterns over metropolitan Chicago, Illinois, during June–August 2003–13 under clear-sky conditions. A self-organizing mapping (SOM) technique is used to cluster air temperature data into six predominant patterns. The hottest heat patterns from the SOM analysis are compared with the 11-summer median conditions using the urban heat island curve (UHIC). The UHIC shows the relationship between air temperature (and dewpoint temperature) and urban land-use fraction. It is found that during these hottest events 1) the air temperature and dewpoint temperature over the study area increase most during nighttime, by at least 4 K relative to the median conditions; 2) the urban–rural temperature/humidity gradient is decreased as a result of larger temperature and humidity increases over the areas with greater vegetation fraction than over those with greater urban fraction; and 3) heat patterns grow more rapidly leading up to the events, followed by a slower return to normal conditions afterward. This research provides an alternate way to investigate the spatiotemporal characteristics of the UHI, using a satellite remote sensing perspective on air temperature and humidity. The technique has potential to be applied to cities globally and provides a climatological perspective on extreme heat that complements the many case studies of individual events. | en_US |
dc.publisher | American Meteorological Society | en_US |
dc.rights | © 2015 American Meteorological Society | en_US |
dc.subject | Heat islands | en_US |
dc.subject | Remote sensing | en_US |
dc.subject | Satellite observations | en_US |
dc.title | Investigation of Urban Air Temperature and Humidity Patterns during Extreme Heat Conditions Using Satellite-Derived Data | en_US |
dc.type | Article | en_US |
kusw.kuauthor | Brunsell, Nathaniel A. | |
kusw.kudepartment | Geography and Atmospheric Science | en_US |
dc.identifier.doi | 10.1175/JAMC-D-15-0051.1 | en_US |
kusw.oaversion | Scholarly/refereed, publisher version | en_US |
kusw.oapolicy | This item meets KU Open Access policy criteria. | en_US |
dc.rights.accessrights | openAccess | |