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Dergiler / Atmospheric Pollution Research / 2017 / Cilt: 8 - Sayı: 2

Development of the Eulerian atmospheric transport model GEARN-FDM: Validation against the European tracer experiment

Masanao Kadowaki
Genki Katata
Hiroaki Terada
Haruyasu Nagai
Sayfa
394–402
DOI
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⚡ TL;DR(1 Cümlede Hızlı Çıkarım)

Therefore, geographical heterogeneity of horizontal diffusivity may affect regional-scale atmospheric dispersion simulations.

📌 3 Maddede Bu Makale

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Amaç & Hipotez:In this study, we developed an atmospheric dispersion model based on the finite difference method (GEARN-FDM) to simulate long-range radiological dispersion.
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Temel Bulgular & Veri:By using tracer gas concentrations from the European tracer experiment, the GEARN-FDM performance could be tested.
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Sonuç & Katkı:Therefore, geographical heterogeneity of horizontal diffusivity may affect regional-scale atmospheric dispersion simulations.
🔬Tür:Modelleme & Sayısal Simülasyon
📍Kapsam:Genişletilmiş Akademik Örneklem
⚙️Değişkenler:Alan Parametreleri

Özet

In this study, we developed an atmospheric dispersion model based on the finite difference method (GEARN-FDM) to simulate long-range radiological dispersion. The model includes a mass conservation and monotonic advection scheme and a horizontal diffusion scheme based on the deformation of the resolved horizontal wind. Meteorological fieldsin calculating dispersionweresimulatedbythe Advanced Research Weather Research and Forecasting (WRF) model. ERA-interim reanalysis was used for the WRF nudging calculation. By using tracer gas concentrations from the European tracer experiment, the GEARN-FDM performance could be tested. The results indicated high performance with factors of 2 and 5 of 37% and 72%, respectively. To investigate the impact of horizontal diffusivity on the concentration distribution, we examined an additional simulation run using GEARN-FDM with a constant value of horizontal diffusivity. In comparison with the additional run, the plume calculated in the original GEARN-FDM run was locally and temporally diluted due to large horizontal diffusivity in a mountainous region. Therefore, geographical heterogeneity of horizontal diffusivity may affect regional-scale atmospheric dispersion simulations.

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Bu Makaleye Atıf Yap

Kadowaki, M., Katata, G., Terada, H., Nagai, H. (2017). Development of the Eulerian atmospheric transport model GEARN-FDM: Validation against the European tracer experiment. Atmospheric Pollution Research, Cilt: 8 - Sayı: 2, 394–402. https://ajindex.com/articles/216966

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Kaynakça (2)

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