skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Evaluation of a multi-scale WRF-CAM5 simulation during the 2010 East Asian Summer Monsoon

Abstract

The Weather Research and Forecasting model with Chemistry (WRF-Chem) with the physics package of the Community Atmosphere Model Version 5 (CAM5) has been applied at multiple scales over Eastern China (EC) and the Yangtze River Delta (YRD) to evaluate how increased horizontal resolution with physics designed for a coarser resolution climate model impacts aerosols and clouds, and the resulting precipitation characteristics and performance during the 2010 East Asian Summer Monsoon (EASM). Despite large underpredictions in surface aerosol concentrations and aerosol optical depth, there is good spatial agreement with surface observations of chemical predictions, and increasing spatial resolution tends to improve performance. Model bias and normalized root mean square values for precipitation predictions are relatively small, but there are significant differences when comparing modeled and observed probability density functions for precipitation in EC and YRD. Increasing model horizontal resolution tends to reduce model bias and error for precipitation predictions. The surface and column aerosol loading is maximized between about 32N and 42N in early to mid-May during the 2010 EASM, and then shifts north while decreasing in magnitude during July and August. Changing model resolution moderately changes the spatiotemporal relationships between aerosols, cloud properties, and precipitation during the EASM, thus demonstratingmore » the importance of model grid resolution in simulating EASM circulation and rainfall patterns over EC and the YRD. Results from this work demonstrate the capability and limitations in the aerosol, cloud, and precipitation representation of WRF-CAM5 for regional-scale applications down to relatively fine horizontal resolutions. Further WRF-CAM5 model development and application in this area is needed.« less

Authors:
; ; ; ; ; ; ;
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1406675
Report Number(s):
PNNL-SA-129852
Journal ID: ISSN 1352-2310; KP1703010
DOE Contract Number:
AC05-76RL01830
Resource Type:
Journal Article
Resource Relation:
Journal Name: Atmospheric Environment (1994); Journal Volume: 169; Journal Issue: C
Country of Publication:
United States
Language:
English

Citation Formats

Campbell, Patrick, Zhang, Yang, Wang, Kai, Leung, Ruby, Fan, Jiwen, Zheng, Bo, Zhang, Qiang, and He, Kebin. Evaluation of a multi-scale WRF-CAM5 simulation during the 2010 East Asian Summer Monsoon. United States: N. p., 2017. Web. doi:10.1016/j.atmosenv.2017.09.008.
Campbell, Patrick, Zhang, Yang, Wang, Kai, Leung, Ruby, Fan, Jiwen, Zheng, Bo, Zhang, Qiang, & He, Kebin. Evaluation of a multi-scale WRF-CAM5 simulation during the 2010 East Asian Summer Monsoon. United States. doi:10.1016/j.atmosenv.2017.09.008.
Campbell, Patrick, Zhang, Yang, Wang, Kai, Leung, Ruby, Fan, Jiwen, Zheng, Bo, Zhang, Qiang, and He, Kebin. Wed . "Evaluation of a multi-scale WRF-CAM5 simulation during the 2010 East Asian Summer Monsoon". United States. doi:10.1016/j.atmosenv.2017.09.008.
@article{osti_1406675,
title = {Evaluation of a multi-scale WRF-CAM5 simulation during the 2010 East Asian Summer Monsoon},
author = {Campbell, Patrick and Zhang, Yang and Wang, Kai and Leung, Ruby and Fan, Jiwen and Zheng, Bo and Zhang, Qiang and He, Kebin},
abstractNote = {The Weather Research and Forecasting model with Chemistry (WRF-Chem) with the physics package of the Community Atmosphere Model Version 5 (CAM5) has been applied at multiple scales over Eastern China (EC) and the Yangtze River Delta (YRD) to evaluate how increased horizontal resolution with physics designed for a coarser resolution climate model impacts aerosols and clouds, and the resulting precipitation characteristics and performance during the 2010 East Asian Summer Monsoon (EASM). Despite large underpredictions in surface aerosol concentrations and aerosol optical depth, there is good spatial agreement with surface observations of chemical predictions, and increasing spatial resolution tends to improve performance. Model bias and normalized root mean square values for precipitation predictions are relatively small, but there are significant differences when comparing modeled and observed probability density functions for precipitation in EC and YRD. Increasing model horizontal resolution tends to reduce model bias and error for precipitation predictions. The surface and column aerosol loading is maximized between about 32N and 42N in early to mid-May during the 2010 EASM, and then shifts north while decreasing in magnitude during July and August. Changing model resolution moderately changes the spatiotemporal relationships between aerosols, cloud properties, and precipitation during the EASM, thus demonstrating the importance of model grid resolution in simulating EASM circulation and rainfall patterns over EC and the YRD. Results from this work demonstrate the capability and limitations in the aerosol, cloud, and precipitation representation of WRF-CAM5 for regional-scale applications down to relatively fine horizontal resolutions. Further WRF-CAM5 model development and application in this area is needed.},
doi = {10.1016/j.atmosenv.2017.09.008},
journal = {Atmospheric Environment (1994)},
number = C,
volume = 169,
place = {United States},
year = {Wed Nov 01 00:00:00 EDT 2017},
month = {Wed Nov 01 00:00:00 EDT 2017}
}