ATTENTION: The software behind KU ScholarWorks is being upgraded to a new version. Starting July 15th, users will not be able to log in to the system, add items, nor make any changes until the new version is in place at the end of July. Searching for articles and opening files will continue to work while the system is being updated.
If you have any questions, please contact Marianne Reed at mreed@ku.edu .
Investigation of Urban Air Temperature and Humidity Patterns during Extreme Heat Conditions Using Satellite-Derived Data
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 |