Comprehensive evaluation of typical planetary boundary layer (PBL) parameterization schemes in China – Part 2: Influence of uncertainty factors-Reference-Cited by-同舟云学术

Comprehensive evaluation of typical planetary boundary layer (PBL) parameterization schemes in China – Part 2: Influence of uncertainty factors

Published:2023-11-24 Issue:22 Volume:16 Page:6833-6856
ISSN:1991-9603
Container-title:Geoscientific Model Development
language:en
Short-container-title:Geosci. Model Dev.

Author:

Jia Wenxing^ORCID,Zhang Xiaoye,Wang Hong^ORCID,Wang Yaqiang,Wang Deying,Zhong Junting^ORCID,Zhang Wenjie^ORCID,Zhang Lei,Guo Lifeng,Lei Yadong,Wang Jizhi,Yang Yuanqin,Lin Yi

Abstract

Abstract. This study focuses on the uncertainties that influence numerical simulation results of meteorological fields (horizontal resolution: 75, 15, and 3 km; vertical resolution: 48 and 62 levels; near-surface (N-S) scheme: MM5 and Eta schemes; initial and boundary conditions: Final (FNL) and European Center for Medium-Range Weather Forecasting (ECMWF) reanalysis data; underlying surface update: model default and latest updates; model version: version 3.6.1 and 3.9.1). By further evaluating and analyzing the uncertainty factors, it is expected to provide relevance for those scholars devoted to factor analysis in order to make the results closer to the observed values. In this study, a total of 12 experiments are set up to analyze the effects of the uncertainties mentioned above, and the following conclusions are drawn: (1) horizontal resolution has a greater effect than vertical resolution; (2) the simulated effects of temperature and wind speed in the N-S scheme are smaller than those in the planetary boundary layer (PBL) scheme; (3) the initial and boundary conditions of different products have the most remarkable effect on relative humidity, while the simulation results of ECMWF data are the best; (4) the updates with urban and water bodies as the underlying surface have a more significant contribution to the meteorological fields, especially on temperature; and (5) for the PBL parameterization schemes, the update of the model version has less impact on the simulation results because each update has small changes and no major changes overall. In general, the configuration of uncertainties needs to be considered comprehensively according to what you need in order to obtain the best simulation results.

Publisher

Copernicus GmbH

Subject

General Medicine

Link

https://gmd.copernicus.org/articles/16/6833/2023/gmd-16-6833-2023.pdf

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