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Influence of High-resolution Surface Databases on the Modeling of Local Atmospheric Circulation Systems : Volume 6, Issue 4 (16/12/2013)

By Paiva, L. M. S.

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Book Id: WPLBN0004009581
Format Type: PDF Article :
File Size: Pages 57
Reproduction Date: 2015

Title: Influence of High-resolution Surface Databases on the Modeling of Local Atmospheric Circulation Systems : Volume 6, Issue 4 (16/12/2013)  
Author: Paiva, L. M. S.
Volume: Vol. 6, Issue 4
Language: English
Subject: Science, Geoscientific, Model
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Historic
Publication Date:
2013
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: copernicus

Citation

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R. Bodstei, G. C., G. Pimente, L. C., & S. Paiv, L. M. (2013). Influence of High-resolution Surface Databases on the Modeling of Local Atmospheric Circulation Systems : Volume 6, Issue 4 (16/12/2013). Retrieved from http://www.hawaiilibrary.com/


Description
Description: Federal Center of Technological Education, Rio de Janeiro, Brazil. Large-eddy simulations are performed using the Advanced Regional Prediction System (ARPS) code at horizontal grid resolutions as fine as 300 m to assess the influence of detailed and updated surface databases on the modeling of local atmospheric circulation systems of urban areas with complex terrain. Applications to air pollution and wind energy are sought. These databases are comprised of 3 arc-sec topographic data from the Shuttle Radar Topography Mission, 10 arc-sec vegetation type data from the European Space Agency (ESA) GlobCover Project, and 30 arc-sec Leaf Area Index and Fraction of Absorbed Photosynthetically Active Radiation data from the ESA GlobCarbon Project. Simulations are carried out for the Metropolitan Area of Rio de Janeiro using six one-way nested-grid domains that allow the choice of distinct parametric models and vertical resolutions associated to each grid. ARPS is initialized using the Global Forecasting System with 0.5°-resolution data from the National Center of Environmental Prediction, which is also used every 3 h as lateral boundary condition. Topographic shading is turned on and two soil layers with depths of 0.01 and 1.0 m are used to compute the soil temperature and moisture budgets in all runs. Results for two simulated runs covering the period from 6 to 7 September 2007 are compared to surface and upper-air observational data to explore the dependence of the simulations on initial and boundary conditions, topographic and land-use databases and grid resolution. Our comparisons show overall good agreement between simulated and observed data and also indicate that the low resolution of the 30 arc-sec soil database from United States Geological Survey, the soil moisture and skin temperature initial conditions assimilated from the GFS analyses and the synoptic forcing on the lateral boundaries of the finer grids may affect an adequate spatial description of the meteorological variables.

Summary
Influence of high-resolution surface databases on the modeling of local atmospheric circulation systems

Excerpt
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