Articles | Volume 16, issue 2
https://doi.org/10.5194/gmd-16-535-2023
https://doi.org/10.5194/gmd-16-535-2023
Development and technical paper
 | 
25 Jan 2023
Development and technical paper |  | 25 Jan 2023

Customized deep learning for precipitation bias correction and downscaling

Fang Wang, Di Tian, and Mark Carroll

Cited articles

Aadhar, S. and Mishra, V.: High-resolution near real-time drought monitoring in South Asia, Sci. Data, 4, 1–14, 2017. 
AghaKouchak, A., Behrangi, A., Sorooshian, S., Hsu, K., and Amitai, E.: Evaluation of satellite-retrieved extreme precipitation rates across the central United States, J. Geophys. Res.-Atmos., 116, D02115, https://doi.org/10.1029/2010JD014741, 2011. 
AghaKouchak, A., Mehran, A., Norouzi, H., and Behrangi, A.: Systematic and random error components in satellite precipitation data sets, Geophys. Res. Lett., 39, L09406, https://doi.org/10.1029/2012GL051592, 2012. 
Ashouri, H., Sorooshian, S., Hsu, K.-L., Bosilovich, M. G., Lee, J., Wehner, M. F., and Collow, A.: Evaluation of NASA's MERRA precipitation product in reproducing the observed trend and distribution of extreme precipitation events in the United States, J. Hydrometeorol., 17, 693–711, 2016. 
Baño-Medina, J., Manzanas, R., and Gutiérrez, J. M.: Configuration and intercomparison of deep learning neural models for statistical downscaling, Geosci. Model Dev., 13, 2109–2124, https://doi.org/10.5194/gmd-13-2109-2020, 2020. 
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Short summary
Gridded precipitation datasets suffer from biases and coarse resolutions. We developed a customized deep learning (DL) model to bias-correct and downscale gridded precipitation data using radar observations. The results showed that the customized DL model can generate improved precipitation at fine resolutions where regular DL and statistical methods experience challenges. The new model can be used to improve precipitation estimates, especially for capturing extremes at smaller scales.
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