Submitted as: model description paper
03 Jan 2023
Submitted as: model description paper | 03 Jan 2023
Status: this preprint is currently under review for the journal GMD.

ISAT v2.0: An integrated tool for nested domain configurations and model-ready emission inventories for WRF-AQM

Kun Wang1,6, Chao Gao2, Haofan Wang3, Kai Wu4, Qingqing Tong2, Mo Dan1, Kaiyun Liu5, and Xiaohui Ji1 Kun Wang et al.
  • 1Institute of urban safety and environmental science, Beijing academy of science and technology, Beijing 100054, China
  • 2Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, 130102, China
  • 3School of Atmospheric Sciences, Sun Yat-sen University, Zhuhai, Guangdong, China
  • 4Department of Land, Air, and Water Resources, University of California, Davis, CA, USA
  • 5State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
  • 6Key Laboratory of Marine Environmental Science and Ecology, Ministry of Education, Ocean University of China, Qingdao, 266100, China

Abstract. An integrated tool, ISAT (Inventory Spatial Allocation Tool) v2.0, was developed to configure nested domains, downscale regional emission inventories, allocate local emission inventories, and generate model-ready emission inventories for the Weather Research and Forecasting (WRF)-Air quality numerical model (AQM). We built four modules into this tool: i) “Prepgrid” conducted a nested domain configuration algorithm based on WRF-AQM nested rules and the target domain shapefile; ii) “Downscale” established a “sub-grid nearest” method to improve both the accuracy and computational efficiency of downscaling the regional emission inventory based on spatial surrogate; iii) “Mapinv” allocated a user-defined regional/city-level emission inventory to grid level based on the target domain shapefile and the spatial surrogate; and iv) “Prepmodel” introduced unique user-friendly emission sector IDs using abbreviations and speciation profiles based on species in the emission inventory and chemical mechanisms for model-ready inventories. The inline format model-ready emission inventory built into this tool is available for both the CMAQ and CAMx. This tool will help model users establish workflow from configuring the research domain to running WRF-AQM. The tool’s framework and related algorithms will also help researchers develop emission inventory processing tools for WRF-AQM.

Kun Wang et al.

Status: open (until 28 Feb 2023)

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Kun Wang et al.

Kun Wang et al.


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Short summary
This study established an easy-to-use and integrated framework on model ready emission inventory for Weather Research and Forecasting (WRF)-Air quality numerical model (AQM). A free tool named ISAT (Inventory Spatial Allocation Tool) was developed based on this framework. ISAT help user complete the workflow from WRF nested domain configuration to model ready emission inventory for AQM with regional emission inventory and shapefile for target region.