Next meeting 14th UFM Meeting · 23 Mar 2027 · Bristol Save the date →
Urban Fluid MechanicsSpecial Interest Group

Data portal · Country

Urban flow and climate datasets for Japan

5 open urban flow resources for Japan: 1 field measurement, 1 laboratory experiment, 2 simulation datasets and 1 tool or geometry. They cover wind loads & pedestrian wind, dispersion & air quality and urban heat & thermal comfort. Each entry links to the original repository, with its licence, creators and how to cite it.

  • 5 resources
  • 1 field
  • 1 lab
  • 2 simulation
  • 1 tools & geometry
  • 2 benchmarks

All 5 resources, largest first

  1. AIJ urban wind environment benchmark cases (A–M)

    12 parts

    The Architectural Institute of Japan (AIJ) urban wind environment benchmark suite: wind-tunnel and field data for cases A–M, from a single high-rise building and cube arrays to real districts such as Shinjuku and Niigata, many with STL geometry. Widely used to validate CFD for pedestrian-level wind and dispersion.

    Collection · 12 parts Benchmark Lab MeasurementsCase setup Wind tunnel

    Niigata, Japan · 2025 · CC BY 4.0 · Paper: Turbulent measurments of the flow field around a high-rise building ↗ +9

  2. URANS cross-comparison for the AIJ Niigata wind-tunnel benchmark (Case E)

    314 MB

    URANS cross-comparison on the AIJ Niigata case against wind-tunnel data.

    Benchmark Simulation Simulation outputCase setup RANS

    Niigata, Japan · 2026 · CC BY 4.0

  3. Open 3D city models of over 300 Japanese cities (PLATEAU)

    Japan's national open CityGML city models: LOD1 buildings with heights everywhere and LOD2 in many core districts (e.g. central Tokyo), in CityGML, 3D Tiles, OBJ and other formats; ready-made realistic geometry for CFD of Japanese cities.

    Tools & geometry Geometry

    Japan (e.g. Tokyo), Japan · 2023 · Public Data License 1.0 (compatible with CC BY 4.0) · Paper: Role of 3D city model data as open digital commons: a case study of openness in Japan's digital twin "Project PLATEAU" ↗

  4. Doppler lidar wind profiles over Tokyo (2013–2014)

    10 MB

    Urban wind profile dataset from Doppler lidar in Tokyo.

    Field Measurements

    Tokyo, Japan · 2025 · CC BY 4.0 · Paper: Observational study of power-law approximation of wind profiles within an urban boundary layer for various wind conditions ↗ +5

  5. Regional climate simulations of Tokyo with coupled urban canopy and building energy models

    Regional climate simulations from WRF-CM-BEM coupled with an urban canopy and building energy model for the Tokyo area. Useful for mesoscale urban heat studies.

    Simulation Simulation output Mesoscale model

    Tokyo, Japan · 2023