Toshinori Aoyagi
Japan Meteorological Agency
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Featured researches published by Toshinori Aoyagi.
Journal of Applied Meteorology and Climatology | 2011
Toshinori Aoyagi; Naoko Seino
AbstractA 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...
RADIATION PROCESSES IN THE ATMOSPHERE AND OCEAN (IRS2016): Proceedings of the International Radiation Symposium (IRC/IAMAS) | 2017
Rei Kudo; Tomoaki Nishizawa; Toshinori Aoyagi; Yasushi Fujiyoshi; Yuji Higuchi; Masahiko Hayashi; Atsushi Shimizu; Kazuma Aoki
The SKYLIDAR algorithm was developed to estimate the vertical profiles of aerosol optical properties from combining the measurements of the sky radiometer in SKYNET and the lidar in AD-Net. The derived parameters are the vertical profiles of extinction coefficient, single-scattering albedo, asymmetry factor, real and imaginary parts of the refractive index, and size distribution. The solar heating rate was estimated from these parameters. The algorithm was applied to the transported dust case, and the detailed vertical structures of the optical properties and the solar heating rate and their relationship were shown. For the validation of the SKYLIDAR algorithm, the vertical profile of the aerosol size distribution from the surface to the altitude of about 3 km was directly observed by the optical particle counter on board the glider. The comparison of the SKYLIDAR derived extinction coefficient with that estimated from OPC measurements showed that the SKYLIDAR result had a bias error due to the optimizati...
Journal of The Meteorological Society of Japan | 2012
Toshinori Aoyagi; Nobuyuki Kayaba; Naoko Seino
urban climate | 2016
Naoko Seino; Toshinori Aoyagi; Hiroshige Tsuguti
Atmospheric Measurement Techniques | 2016
Rei Kudo; Tomoaki Nishizawa; Toshinori Aoyagi
Journal of The Meteorological Society of Japan | 2018
Rui Ito; Toshinori Aoyagi; Naoto Hori; Mitsuo Oh'izumi; Hiroaki Kawase; Koji Dairaku; Naoko Seino; Hidetaka Sasaki
Journal of The Meteorological Society of Japan | 2018
Naoko Seino; Ryoko Oda; Hirofumi Sugawara; Toshinori Aoyagi
Atmospheric Measurement Techniques | 2018
Rei Kudo; Toshinori Aoyagi; Tomoaki Nishizawa
Sola | 2017
Akihiko Murata; Hidetaka Sasaki; Hiroaki Kawase; Masaya Nosaka; Toshinori Aoyagi; Mitsuo Oh'izumi; Naoko Seino; Fumitake Shido; Kenshi Hibino; Koji Ishihara; Hirokazu Murai; Souichirou Yasui; Shunya Wakamatsu; Izuru Takayabu
Japan Geoscience Union | 2017
Rui Ito; Hiroaki Kawase; Koji Dairaku; Toshinori Aoyagi; Mitsuo Oh’izumi; Naoto Hori; Hidetaka Sasaki