Mapping Occupational Heat Exposure and Effects in South-East Asia: Ongoing Time Trends 1980?2011
and Future Estimates to 2050
Tord KJELLSTROM1–3*, Bruno LEMKE4 and Matthias OTTO4
1 Centre for Global Health Research, Umea University, Sweden
2 National Centre for Epidemiology and Population Health, Australian National University (ANU), Australia
3 Institute for Global Health, University College London (UCL), United Kingdom
4 Nelson-Marlborough Institute of Technology, New Zealand
Received October 16, 2012 and accepted November 7, 2012
Abstract: A feature of climate impacts on occupational health and safety are physiological limits to carrying out physical work at high heat exposure. Heat stress reduces a workers work capacity, leading to lower hourly labour productivity and economic output. We used existing weather station data and climate modeling grid cell data to describe heat conditions (calculated as Wet Bulb Globe Temperature, WBGT) in South-East Asia. During the hottest month in this region (March) afternoon WBGT levels are already high enough to cause major loss of hourly work capacity and by 2050 the situation will be extreme for many outdoor jobs.
Key words: Climate change, Heat exposure, Occupational health, Work capacity, Labour productivity
Industrial Health 2013, 51, 56–67
