Browse > Article

Synoptic Air Mass Classification Using Cluster Analysis and Relation to Daily Mortality in Seoul, South Korea  

Kim, Jiyoung (Applied Meteorology Research Laboratory, Meteorological Research Institute, Korea Meteorological Administration)
Lee, Dae-Geun (Applied Meteorology Research Laboratory, Meteorological Research Institute, Korea Meteorological Administration)
Choi, Byoung-Cheol (Applied Meteorology Research Laboratory, Meteorological Research Institute, Korea Meteorological Administration)
Park, Il-Soo (National Institute of Environmental Research, Ministry of Environment)
Publication Information
Atmosphere / v.17, no.1, 2007 , pp. 45-53 More about this Journal
Abstract
In order to investigate the impacts of heat wave on human health, cluster analysis of meteorological elements (e.g., temperature, dewpoint, sea level pressure, visibility, cloud amount, and wind components) for identifying offensive synoptic air masses is employed. Meteorological data at Seoul during the past 30 years are used. The daily death data at Seoul are also employed. Occurrence frequency of heat waves which is defined by daily maximum temperature greater than the threshold temperature (i.e., $31.2^{\circ}C$) was analyzed. The result shows that the frequency and duration of heat waves at Seoul are increasing during the past 30 years. In addition, the increasing trend of the frequency and duration clearly appears in late spring and early autumn as well as summer. Factor analysis shows that 65.1% of the total variance can be explained by 4 components which are linearly independent. Eight clusters (or synoptic air masses) were classified and found to be optimal for representing the summertime air masses at Seoul, Korea. The results exhibit that cluster-mean values of meteorological variables of an offensive air mass (or cluster) are closely correlated with the observed and standardized deaths.
Keywords
climate and human mortality; cluster analysis; threshold temperature; synoptic climatology; heat wave;
Citations & Related Records
연도 인용수 순위
  • Reference