Simulation of atmospheric flow field over the complex terrain of Kaiga using WRF: sensitivity to model resolution and PBL physics

2021 ◽  
Vol 134 (1) ◽  
Author(s):  
Arun Aravind ◽  
C. V. Srinivas ◽  
R. Shrivastava ◽  
M. N. Hegde ◽  
H. Seshadri ◽  
...  
Keyword(s):  
Flow Field ◽  
Complex Terrain ◽  
Model Resolution ◽  
Atmospheric Flow

S051053 Wind Tunnel Experiment on Flow Field in Complex Terrain for Various Turbulence Intensity

2011 ◽  
Vol 2011 (0) ◽  
pp. _S051053-1-_S051053-5
Author(s):  
Junsuke MURATA ◽  
Yasunari KAMADA ◽  
Takao MAEDA ◽  
Ryuta NAKAI ◽  
Masayoshi OKAMOTO ◽  
...  
Keyword(s):  
Wind Tunnel ◽  
Flow Field ◽  
Turbulence Intensity ◽  
Complex Terrain ◽  
Wind Tunnel Experiment

Numerical Simulation of Atmospheric Flow Field around Bridge

2013 ◽  
Vol 368-370 ◽  
pp. 1379-1382
Author(s):  
Ying Jia ◽  
Li Zhang ◽  
Sheng Zhang
Keyword(s):  
Numerical Simulation ◽  
Flow Field ◽  
Pressure Distribution ◽  
Cross Section ◽  
Horizontal Plane ◽  
Atmospheric Flow ◽  
Airflow Field ◽  
Distribution Laws ◽  
The Cross

This paper carries out a numerical simulation of the atmospheric flow field around bridge. The variation law of airflow field around bridge is studied. Velocity and pressure distribution laws of flow field in horizontal plane and the cross-section are discussed, and influence range of flow field around bridge area is identified.

scholarly journals Meteorological observations in tall masts for the mapping of atmospheric flow in Norwegian fjords

2020 ◽  
Vol 12 (4) ◽  
pp. 3621-3640
Author(s):  
Birgitte Rugaard Furevik ◽  
Hálfdán Ágústsson ◽  
Anette Lauen Borg ◽  
Zakari Midjiyawa ◽  
Finn Nyhammer ◽  
...  
Keyword(s):  
Atmospheric Pressure ◽  
Complex Terrain ◽  
Meteorological Parameters ◽  
Temporal Frequency ◽  
Three Dimensional ◽  
Dew Point ◽  
The Arctic ◽  
Atmospheric Flow ◽  
Climatological Data ◽  
Meteorological Observations

Abstract. Since 2014, 11 tall meteorological masts have been erected in coastal areas of mid-Norway in order to provide observational data for a detailed description of the wind conditions at several potential fjord crossing sites. The planned fjord crossings are part of the Norwegian Public Roads Administration (NPRA) Coastal Highway E39 project. The meteorological masts are 50–100 m high and located in complex terrain near the shoreline in Halsafjorden, Julsundet and Storfjorden in the Møre og Romsdal county of Norway. Observations of the three-dimensional wind vector are made at 2–4 levels of each mast with a temporal frequency of 10 Hz. The dataset is corroborated with observed profiles of temperature at two masts, as well as observations of precipitation, atmospheric pressure, relative humidity and dew point at one site. The first masts were erected in 2014, and the measurement campaign will continue until at least 2024. The current paper describes the observational setup, and observations of key atmospheric parameters are presented and put in context with observations and climatological data from a nearby reference weather station. The 10 min and 10 Hz wind data, as well as other meteorological parameters, are publicly available through the Arctic Data Centre (https://doi.org/10.21343/z9n1-qw63; Furevik et al., 2019).

Reproducibility of Surface Wind and Tracer Transport Simulations over Complex Terrain Using 5-, 3-, and 1-km-Grid Models

2020 ◽  
Vol 59 (5) ◽  
pp. 937-952 ◽  
Author(s):  
Tsuyoshi Thomas Sekiyama ◽  
Mizuo Kajino
Keyword(s):  
Complex Terrain ◽  
Mesoscale Model ◽  
Meteorological Data ◽  
Surface Wind ◽  
Weather Conditions ◽  
Radioactive Cesium ◽  
Model Resolution ◽  
Tracer Transport ◽  
Mountainous Areas ◽  
Sampling System

AbstractThe reproducibility of surface wind and tracer transport simulations from high-resolution weather and transport models was studied over complex terrain in wintertime in Japan. The horizontal grid spacing was varied (5-, 3-, and 1-km grids), and radioactive cesium (Cs-137) from the Fukushima nuclear power plant was used as a tracer. Fukushima has complex terrain, such as mountains and valleys. The model results were validated by observations collected from the national networks of the automated meteorological data acquisition system and the hourly air pollution sampling system. The reproducibility depended on the model resolution, topographic complexity, and synoptic weather conditions. Higher model resolution led to higher reproducibility of surface winds, especially in mountainous areas when the Siberian winter monsoon was disturbed. In contrast, the model improvement was negligible or nonexistent over plain/coastal areas when the synoptic field was steady. The statistical scores of the tracer transport simulations often deteriorated as a result of small errors in the plume locations. However, the higher-resolution models advantageously performed better transport simulations in the mountainous areas because of the lower numerical diffusion and higher reproducibility of the mass flux. The reproducibility of the tracer distribution in the valley of the Fukushima mountainous region was dramatically improved with increasing model resolution. In the range of mesoscale model resolutions (commonly 1–10 km), it was concluded that a higher-resolution model is definitely recommended for tracer transport simulations over mountainous terrain.

Numerical Simulation of Atmospheric Flow Field around Highways

2013 ◽  
Vol 639-640 ◽  
pp. 481-484
Author(s):  
Ying Jia ◽  
Chao Chao Zheng
Keyword(s):  
Numerical Simulation ◽  
Flow Field ◽  
The State ◽  
Altered State ◽  
Atmospheric Flow ◽  
Affected Area

The construction of highways has changed the state of the atmospheric flow field around this area. Adopting the model of SST k-ω，this paper carries out a numerical simulation of the atmospheric flow field around the highway. The affected area of highways with different parameters on surrounding atmospheric flow field and the altered state of flow filed are studied.

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