Articles | Volume 14, issue 5
Geosci. Model Dev., 14, 2827–2841, 2021
https://doi.org/10.5194/gmd-14-2827-2021
Geosci. Model Dev., 14, 2827–2841, 2021
https://doi.org/10.5194/gmd-14-2827-2021

Model evaluation paper 20 May 2021

Model evaluation paper | 20 May 2021

Development and evaluation of spectral nudging strategy for the simulation of summer precipitation over the Tibetan Plateau using WRF (v4.0)

Ziyu Huang et al.

Data sets

ERA Interim, Daily - Surface European Reanalysis Interim http://apps.ecmwf.int/datasets/data/interim-full-daily/levtype=sfc/

ERA Interim, Daily - Pressure levels European Reanalysis Interim http://apps.ecmwf.int/datasets/data/interim-full-daily/levtype=pl/

ERA5 data Copernicus Climate Change Service (C3S) Climate Data Store https://cds.climate.copernicus.eu/#!/search?text=ERA5&type=dataset/

Model code and software

WRF v4.0 model WRF https://www2.mmm.ucar.edu/wrf/users/download/get_sources.html

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Short summary
Spectral nudging is an effective dynamical downscaling method used to improve precipitation simulations of regional climate models (RCMs). However, the biases of the driving fields over the Tibetan Plateau (TP) would possibly introduce extra biases when spectral nudging is applied. The results show that the precipitation simulations were significantly improved when limiting the application of spectral nudging toward the potential temperature and water vapor mixing ratio over the TP.