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Multi-scenario validation of CALMET-RIMPUFF for local-scale atmospheric dispersion modeling around a nuclear powerplant site with complex topography
- Source :
- Journal of environmental radioactivity.
- Publication Year :
- 2020
-
Abstract
- The CALMET-RIMPUFF is composed of the California Meteorological Model and the Riso Mesoscale PUFF model, which provides reļ¬ned atmospheric dispersion modeling for nuclear emergency response. Because the performance of an atmospheric dispersion model can be case-sensitive, a multi-scenario validation is important to understand a model's behavior and limits. In this study, a multi-scenario validation of CALMET-RIMPUFF was performed based on six wind tunnel experiments simulating a real China's nuclear powerplant site with complex topographies and dense buildings. The CALMET-RIMPUFF simulations were compared with the measurements of the vertical wind profiles, 2D ground wind and concentration fields, both qualitatively and quantitatively. The results demonstrate that the CALMET-RIMPUFF can simulate the ground-level wind with acceptable accuracies. For vertical wind profiles, the accuracies show high dependencies on the local topography and building layout. The simulated ground concentrations generally agree well with the measurements, though the plume axis showed slight discrepancies from the measurements in three cases. Because the CALMET-RIMPUFF lacks a building effect module, it shows noticeable discrepancies in the building area. However, such discrepancies do not propagate to the downwind mountainous and sea areas, which the accuracies are quite satisfactory. Thus, the CALMET-RIMPUFF is capable for local-scale modeling at this site.
- Subjects :
- Air Pollutants
Complex topography
010504 meteorology & atmospheric sciences
Power station
Meteorology
Health, Toxicology and Mutagenesis
Local scale
Mesoscale meteorology
General Medicine
010501 environmental sciences
Atmospheric dispersion modeling
Models, Theoretical
01 natural sciences
Pollution
Plume
Emergency response
Radiation Monitoring
Environmental Chemistry
Environmental science
Waste Management and Disposal
0105 earth and related environmental sciences
Wind tunnel
Environmental Monitoring
Subjects
Details
- ISSN :
- 18791700
- Database :
- OpenAIRE
- Journal :
- Journal of environmental radioactivity
- Accession number :
- edsair.doi.dedup.....407e2b6b8955de876e0d7f8114e4e0b0