Editorial Type:
Article
Article Type:
Research Article

A Square Prism Urban Canopy Scheme for the NHM and Its Evaluation on Summer Conditions in the Tokyo Metropolitan Area, Japan

Toshinori Aoyagi Meteorological Research Institute, Tsukuba, Ibaraki, Japan

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Naoko Seino Meteorological Research Institute, Tsukuba, Ibaraki, Japan

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Print Publication:
01 Jul 2011
DOI:
https://doi.org/10.1175/2011JAMC2489.1
Page(s):
1476–1496
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Abstract

A single-layered square prism urban canopy (SPUC) scheme for the Japan Meteorological Agency nonhydrostatic model (NHM) was developed. This scheme considers the urban canopy layer with square prism–shaped buildings. The basic concept of this scheme is similar to those of the conventional energy balance models for an urban canyon structure. The scheme presented here differs slightly from them in its representation of the bulk resistance circuit and some treatments of radiation processes, however, as well as by considering the water reservoir on building surfaces. A comparison between the SPUC scheme and the existing slab scheme of the NHM was made on summer days in the Tokyo metropolitan area. The SPUC run more accurately reproduced the expected behavior of the urban canopy effect than did the slab run. The effective albedo was smaller in the SPUC run than in the slab run (the upward shortwave radiation of the SPUC run was smaller than that of the slab run). The forecast heat fluxes in the SPUC run, however, showed worse performances. Adequate parameter settings (especially concerning latent heat fluxes) are needed in the SPUC run. The mean bias errors of the surface air temperature during nighttime were less negative and slightly improved in the SPUC run than in the slab run.

Corresponding author address: Toshinori Aoyagi, Meteorological Research Institute, Nagamine 1-1, Tsukuba, Ibaraki 305-0052, Japan. E-mail: taoyagi@mri-jma.go.jp

Abstract

A single-layered square prism urban canopy (SPUC) scheme for the Japan Meteorological Agency nonhydrostatic model (NHM) was developed. This scheme considers the urban canopy layer with square prism–shaped buildings. The basic concept of this scheme is similar to those of the conventional energy balance models for an urban canyon structure. The scheme presented here differs slightly from them in its representation of the bulk resistance circuit and some treatments of radiation processes, however, as well as by considering the water reservoir on building surfaces. A comparison between the SPUC scheme and the existing slab scheme of the NHM was made on summer days in the Tokyo metropolitan area. The SPUC run more accurately reproduced the expected behavior of the urban canopy effect than did the slab run. The effective albedo was smaller in the SPUC run than in the slab run (the upward shortwave radiation of the SPUC run was smaller than that of the slab run). The forecast heat fluxes in the SPUC run, however, showed worse performances. Adequate parameter settings (especially concerning latent heat fluxes) are needed in the SPUC run. The mean bias errors of the surface air temperature during nighttime were less negative and slightly improved in the SPUC run than in the slab run.

Corresponding author address: Toshinori Aoyagi, Meteorological Research Institute, Nagamine 1-1, Tsukuba, Ibaraki 305-0052, Japan. E-mail: taoyagi@mri-jma.go.jp
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Journal of Applied Meteorology and Climatology

  • Beljaars, A. C. M., and A. A. M. Holtslag, 1991: Flux parameterization over land surface for atmospheric models. J. Appl. Meteor., 30, 327–341.

    • Search Google Scholar
    • Export Citation

  • Best, M. J., 2005: Representing urban areas within operational numerical weather prediction models. Bound.-Layer Meteor., 114, 91–109.

    • Search Google Scholar
    • Export Citation

  • Brown, M. J., and M. Williams, 1998: An urban canopy parameterization for mesoscale meteorological models. Preprints, Second Symp. on the Urban Environment, Albuquerque, NM, Amer. Meteor. Soc., 144–147.

    • Search Google Scholar
    • Export Citation

  • Chen, F., and Coauthors, 2010: The integrated WRF/urban modeling system: Development, evaluation, and applications to urban environmental problems. Int. J. Climatol., 31, 273–288, doi:10.1002/joc.2158.

    • Search Google Scholar
    • Export Citation

  • Cullen, M. J. P., 1993: The Unified Forecast/Climate Model. Meteor. Mag., 122, 81–94.

  • Deardorff, J. W., 1978: Efficient prediction of ground surface temperature and moisture, with inclusion of a layer of vegetation. J. Geophys. Res., 83, 1889–1903.

    • Search Google Scholar
    • Export Citation

  • Dupont, S., and P. G. Mestayer, 2006: Parameterization of the urban energy budget with the submesoscale soil model. J. Appl. Meteor. Climatol., 45, 1744–1765.

    • Search Google Scholar
    • Export Citation

  • Dupont, S., T. L. Otte, and J. K. S. Ching, 2004: Simulation of meteorological fields within and above urban and rural canopies with a mesoscale model (MM5). Bound.-Layer Meteor., 113, 111–158.

    • Search Google Scholar
    • Export Citation

  • ECCJ, 2005: Report of survey on the effect of energy conservations to mitigation of heat island phenomena (in Japanese). Energy Conservation Center Japan, 266 pp.

    • Search Google Scholar
    • Export Citation

  • Fujibe, F., 2009: Detection of urban warming in recent temperature trends in Japan. Int. J. Climatol., 29, 1811–1822.

  • Fujibe, F., N. Yamazaki, M. Katsuyama, and K. Kobayashi, 2005: The increasing trend of intense precipitation in Japan based on four-hourly data for a hundred years. SOLA, 1, doi:10.2151/sola.2005-012.

    • Search Google Scholar
    • Export Citation

  • Grimmond, C. S. B., and Coauthors, 2010: The International Urban Energy Balance Models Comparison Project: First results from phase 1. J. Appl. Meteor. Climatol., 49, 1268–1292.

    • Search Google Scholar
    • Export Citation

  • Hagishima, A., and J. Tanimoto, 2003: Field measurements for estimating the convective heat transfer coefficient at building surfaces. Build. Environ., 38, 873–881.

    • Search Google Scholar
    • Export Citation

  • Hamdi, R., and G. Schayes, 2007: Validation of Martilli’s urban boundary layer scheme with measurements from two mid-latitude European cities. Atmos. Chem. Phys., 7, 4513–4526.

    • Search Google Scholar
    • Export Citation

  • Holt, T., and J. Pullen, 2007: Urban canopy modeling of the New York City metropolitan area: A comparison and validation of single- and multilayer parameterizations. Mon. Wea. Rev., 135, 1906–1930.

    • Search Google Scholar
    • Export Citation

  • Kanae, S., T. Oki, and A. Kashida, 2004: Changes in hourly heavy precipitation at Tokyo from 1890 to 1999. J. Meteor. Soc. Japan, 82, 241–247.

    • Search Google Scholar
    • Export Citation

  • Kanda, M., T. Kawai, M. Kanega, R. Moriwaki, K. Narita, and A. Hagishima, 2005a: A simple energy balance model for regular building arrays. Bound.-Layer Meteor., 116, 423–443.

    • Search Google Scholar
    • Export Citation

  • Kanda, M., T. Kawai, and K. Nakagawa, 2005b: A simple theoretical radiation scheme for regular building arrays. Bound.-Layer Meteor., 114, 71–90.

    • Search Google Scholar
    • Export Citation

  • Kondo, H., Y. Genchi, Y. Kikegawa, Y. Ohashi, H. Yoshikado, and H. Komiyama, 2005: Development of a multi-layer urban canopy model for the analysis of energy consumption in a big city: Structure of the urban canopy model and its basic performance. Bound.-Layer Meteor., 116, 395–421.

    • Search Google Scholar
    • Export Citation

  • Kusaka, H., and F. Kimura, 2004a: Coupling a single-layer urban canopy model with a simple atmospheric model: Impact on urban heat island simulation for an idealized case. J. Meteor. Soc. Japan, 82, 67–80.

    • Search Google Scholar
    • Export Citation

  • Kusaka, H., and F. Kimura, 2004b: Thermal effects of urban canyon structure on the nocturnal heat island: Numerical experiment using a mesoscale model coupled with an urban canopy model. J. Appl. Meteor., 43, 1899–1910.

    • Search Google Scholar
    • Export Citation

  • Kusaka, H., H. Kondo, Y. Kikegawa, and F. Kimura, 2001: A simple single-layer urban canopy model for atmospheric models: Comparison with multi-layer and slab models. Bound.-Layer Meteor., 101, 329–358.

    • Search Google Scholar
    • Export Citation

  • Kusaka, H., F. Chen, M. Tewari, M. Duda, J. Dudhia, Y. Miya, and Y. Akimoto, 2009: Performance of the WRF model as a high resolution regional climate model: Model inter comparison study. Extended Abstracts, Seventh Int. Conf. on Urban Climate, Yokohama, Japan, Int. Assoc. for Urban Climate, P3-25.

    • Search Google Scholar
    • Export Citation

  • Lemonsu, A., and V. Masson, 2002: Simulation of a summer urban breeze over Paris. Bound.-Layer Meteor., 104, 463–490.

  • Lemonsu, A., C. S. B. Grimmond, and V. Masson, 2004: Modeling the surface energy balance of the core of an old Mediterranean city: Marseille. J. Appl. Meteor., 43, 312–327.

    • Search Google Scholar
    • Export Citation

  • Liu, Y., F. Chen, T. Warner, and J. Basara, 2006: Verification of a mesoscale data-assimilation and forecasting system for the Oklahoma City area during the Joint Urban 2003 field project. J. Appl. Meteor. Climatol., 45, 912–929.

    • Search Google Scholar
    • Export Citation

  • Loridan, T., and Coauthors, 2010: Trade-offs and responsiveness of the single-layer urban canopy parametrization in WRF: An offline evaluation using the MOSCEM optimization algorithm and field observations. Quart. J. Roy. Meteor. Soc., 136, 997–1019.

    • Search Google Scholar
    • Export Citation

  • Martilli, A., A. Clappier, and M. W. Rotach, 2002: An urban surface exchange parameterisation for mesoscale models. Bound.-Layer Meteor., 104, 261–304.

    • Search Google Scholar
    • Export Citation

  • Mashiko, W., H. Niino, and T. Kato, 2009: Numerical simulation of tornadogenesis in an outer-rainband minisupercell of Typhoon Shanshan on 17 September 2006. Mon. Wea. Rev., 137, 4238–4260.

    • Search Google Scholar
    • Export Citation

  • Masson, V., 2000: A physically-based scheme for the urban energy budget in atmospheric models. Bound.-Layer Meteor., 94, 357–397.

  • Masson, V., C. S. B. Grimmond, and T. R. Oke, 2002: Evaluation of the Town energy balance (TEB) scheme with direct measurements from dry districts in two cities. J. Appl. Meteor., 41, 1011–1026.

    • Search Google Scholar
    • Export Citation

  • Matheson, M. A., and Y. Ashie, 2008: The effect of changes of urban surfaces on rainfall phenomenon as determined by a non-hydrostatic mesoscale model. J. Meteor. Soc. Japan, 86, 733–751.

    • Search Google Scholar
    • Export Citation

  • Moriwaki, R., and M. Kanda, 2004: Seasonal and diurnal fluxes of radiation, heat, water vapor and carbon dioxide over a suburban area. J. Appl. Meteor., 43, 1700–1710.

    • Search Google Scholar
    • Export Citation

  • Otte, T. L., A. Lacser, S. Dupont, and J. K. S. Ching, 2004: Implementation of an urban canopy parameterization in a mesoscale meteorological model. J. Appl. Meteor., 43, 1648–1665.

    • Search Google Scholar
    • Export Citation

  • Saito, K., and Coauthors, 2006: The operational JMA nonhydrostatic mesoscale model. Mon. Wea. Rev., 134, 1266–1298.

  • Sasaki, H., and K. Kurihara, 2008: Preliminary experiments of reproducing the present climate using the non-hydrostatic regional climate model. SOLA, 4, doi:10.2151/sola.2008-007.

    • Search Google Scholar
    • Export Citation

  • Seino, N., H. Sasaki, J. Sato, and M. Chiba, 2004: High-resolution simulation of volcanic sulfur dioxide dispersion over the Miyake Island. Atmos. Environ., 38, 7073–7081.

    • Search Google Scholar
    • Export Citation

  • Senoo, H., M. Kanda, T. Kinouchi, and A. Hagishima, 2004: Estimation of anthropogenic heat and vapor emission, and the impact on local meteorology (in Japanese). Ann. J. Hydr. Eng., 48, 160–174.

    • Search Google Scholar
    • Export Citation

  • Zhang, H., N. Sato, T. Izumi, K. Hanaki, and T. Aramaki, 2008: Modified RAMS-urban canopy model for heat island simulation in Chongqing, China. J. Appl. Meteor. Climatol., 47, 509–524.

    • Search Google Scholar
    • Export Citation
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