Generating hourly local weather data with high spatially resolution and the applications in bioclimatic performance

Feng Yi Lin, Kuo Tsang Huang, Tzu-Ping Lin, Ruey Lung Hwang

Research output: Contribution to journalArticle

Abstract

As urbanization expands and diversifies, weather data produced by a single weather station in a suburb are no longer adequate to represent and reflect microclimatic changes of a city. This study selected 34 automatic weather stations in Tainan City, Taiwan, to conduct temperature and humidity measurements over a period of one year. Based on those observed weather data and urban environment parameters obtained from a geographic information system, as well as morphing approach, this study constructed a method of generating hourly local weather data for urban areas while accounting for urban heat island (UHI) effect in summer. Meanwhile, we discussed the relativities of the urban form and its structure against the variations of local hourly temperature and relative humidity under six buffer scenarios. Error analysis results revealed that minimal prediction errors can be obtained using the buffer scenario involving a 1000 × 1000 m2 four-layer buffer with inner and outer layers and upwind and downwind areas. Finally, using the hourly weather data produced for Tainan City, we calculated the long-term cumulative UHI intensity (UHII) and urban bioclimatic indexes (i.e., thermal stress, use of natural ventilation, and cooling degree day) and investigated how urban form and structure are related to UHII, thermal stress, use of natural ventilation, and cooling degree day. The results can inform urban policy making.

LanguageEnglish
Pages1262-1271
Number of pages10
JournalScience of the Total Environment
Volume653
DOIs
Publication statusPublished - 2019 Feb 25

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Weather information services
Meteorology
error analysis
Thermal stress
meteorology
Error analysis
Ventilation
ventilation
Atmospheric humidity
Buffers
Cooling
weather
Relativity
heat island
Buffer layers
weather station
Thermal effects
Geographic information systems
cooling
Temperature

All Science Journal Classification (ASJC) codes

  • Environmental Engineering
  • Environmental Chemistry
  • Waste Management and Disposal
  • Pollution

Cite this

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abstract = "As urbanization expands and diversifies, weather data produced by a single weather station in a suburb are no longer adequate to represent and reflect microclimatic changes of a city. This study selected 34 automatic weather stations in Tainan City, Taiwan, to conduct temperature and humidity measurements over a period of one year. Based on those observed weather data and urban environment parameters obtained from a geographic information system, as well as morphing approach, this study constructed a method of generating hourly local weather data for urban areas while accounting for urban heat island (UHI) effect in summer. Meanwhile, we discussed the relativities of the urban form and its structure against the variations of local hourly temperature and relative humidity under six buffer scenarios. Error analysis results revealed that minimal prediction errors can be obtained using the buffer scenario involving a 1000 × 1000 m2 four-layer buffer with inner and outer layers and upwind and downwind areas. Finally, using the hourly weather data produced for Tainan City, we calculated the long-term cumulative UHI intensity (UHII) and urban bioclimatic indexes (i.e., thermal stress, use of natural ventilation, and cooling degree day) and investigated how urban form and structure are related to UHII, thermal stress, use of natural ventilation, and cooling degree day. The results can inform urban policy making.",
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Generating hourly local weather data with high spatially resolution and the applications in bioclimatic performance. / Lin, Feng Yi; Huang, Kuo Tsang; Lin, Tzu-Ping; Hwang, Ruey Lung.

In: Science of the Total Environment, Vol. 653, 25.02.2019, p. 1262-1271.

Research output: Contribution to journalArticle

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