Japan Geoscience Union Meeting 2019

Presentation information

[E] Poster

M (Multidisciplinary and Interdisciplinary) » M-TT Technology & Techniques


Mon. May 27, 2019 5:15 PM - 6:30 PM Poster Hall (International Exhibition Hall8, Makuhari Messe)

convener:Yuichi S. Hayakawa(Faculty of Environmental Earth Science, Hokkaido University), Shigekazu Kusumoto(Graduate School of Science and Engineering for Research, University of Toyama), Christopher A Gomez(Kobe University Faculty of Maritime Sciences Volcanic Risk at Sea Research Group)

[MTT47-P06] Increasing temporal depth of urban Land-Use Regression Models by wind-data driven dynamic buffer generation

*Tilman Leo Hohenberger1, King Wai Leung1 (1.Division of Environment and Sustainability, Hong Kong University of Science and Technology)

Keywords:Wind, Land Use Regression, Spatial Data, Meteorology

Land-use regression (LUR) models are commonly used as an inexpensive and easy to set-up way to predict spatial variability in air-pollution. They are successfully applied to regional and, more and more, urban settings, making use of spatial predictors such as land-use, vegetation, morphology and geography. New approaches include an improved use of wind-data for buffer-creation and predictor calculation.

Traditionally, LUR models are used to generate annual or seasonal concentration averages and are not able cover deeper temporal variability. We aim at increasing temporal depth by using a novel approach in generating dynamic buffers for predictor calculation using both monthly wind-speed and wind-direction averages. The traditional circular buffers are replaced by wedges, whose orientation and radius are bound to these meteorological variables.

Here, Hong Kong’s diverse territory is taken as a study site, and our model is trained with 5 years data from 16 government air quality monitoring stations and deployed portable sensors network. We compare our novel approach to both traditional LUR models and a sophisticated urban chemical transport model (ADMS-Urban).

Results will highlight the opportunities in using LUR models for monthly air-quality pollution concentration as an alternative to chemical transport modelling.