Differences between downscaling with spectral and grid nudging using WRF [PDF]
Atmospheric Chemistry and Physics, 2012 Abstract. Dynamical downscaling has been extensively used to study regional climate forced by large-scale global climate models. During the downscaling process, however, the simulation of regional climate models (RCMs) tends to drift away from the driving fields.
P. Liu +5 more
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The influence of spectral nudging on typhoon formation in regional climate models
Environmental Research Letters, 2012 Regional climate models can successfully simulate tropical cyclones and typhoons. This has been shown and was evaluated for hindcast studies of the past few decades. But often global and regional weather phenomena are not simulated at the observed location, or occur too often or seldom even though the regional model is driven by global reanalysis data ...
Feser, F., Barcikowska, M.
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Inferring flow parameters and turbulent configuration with physics-informed data assimilation and spectral nudging [PDF]
Physical Review Fluids, 2018 Inferring physical parameters of turbulent flows by assimilation of data measurements is an open challenge with key applications in meteorology, climate modeling and astrophysics. Up to now, spectral nudging was applied for empirical data-assimilation as a mean to improve deterministic and statistical predictability in the presence of a restricted set ...
Patricio Clark Di Leoni +2 more
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Sensitivity Evaluation of Spectral Nudging Schemes in Historical Dynamical Downscaling for South Asia [PDF]
Advances in Meteorology, 2017 Sensitivity experiments testing two scale-selective bias correction (SSBC) methods have been carried out to identify an optimal spectral nudging scheme for historical dynamically downscaled simulations of South Asia, using the coordinated regional climate downscaling experiment (CORDEX) protocol and the regional spectral model (RSM).
Mehwish Ramzan +4 more
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Comparison of Analysis and Spectral Nudging Techniques for Dynamical Downscaling with the WRF Model over China [PDF]
Advances in Meteorology, 2016 To overcome the problem that the horizontal resolution of global climate models may be too low to resolve features which are important at the regional or local scales, dynamical downscaling has been extensively used. However, dynamical downscaling results generally drift away from large-scale driving fields. The nudging technique can be used to balance
Yuanyuan Ma +5 more
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Does Spectral Nudging Have an Effect on Dynamical Downscaling Applied in Small Regional Model Domains? [PDF]
Monthly Weather Review, 2017 Spectral nudging is a method that was developed to constrain regional climate models so that they reproduce the development of the large-scale atmospheric state, while permitting the formation of regional-scale details as conditioned by the large scales.
Schaaf, B., Storch, H.v., Feser, F.
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Impacts of using spectral nudging on regional climate model RCA4 simulations of the Arctic [PDF]
Geoscientific Model Development, 2013 Abstract. The performance of the Rossby Centre regional climate model RCA4 is investigated for the Arctic CORDEX (COordinated Regional climate Downscaling EXperiment) region, with an emphasis on its suitability to be coupled to a regional ocean and sea ice model.
P. Berg, R. Döscher, T. Koenigk
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The impact of wave number selection and spin-up time in spectral nudging [PDF]
, 2019 The present work studies two relevant parameters from spectral nudging. First, the cut-off wave number, which effectively separates the nudged scales from the free running ones. And, second, the spin-up time, which determines how much time is needed to reach a balance between the nudging force and the model internal climate.
Gómez Hombre, Breogán Xacobo
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Evaluation of the COSMO-CLM for East Asia Climate simulations: Sensitivity to Spectral Nudging
Journal of Climate Research, 2016 This study evaluates climate simulations performed over the CORDEX Phase 2 East Asia domain with a Regional Climate Model (RCM), Consortium for Small-scale Modelling (COSMO)- Climate Limited-area Modelling (CLM) (CCLM), driven by the European Centre for ...
Donghyun Lee +3 more
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Impact of including spectral nudging in regional analyses and forecasts generated with LETKF-WRF [PDF]
, 2022 Uno de los desafíos en la generación de análisis y pronósticos regionales es lograr unadefinición adecuada de su condición de borde. En particular, para un sistema de asimilaciónde datos regional es importante estudiar el impacto de la forma en que se ...
Garcia Skabar, Yanina +2 more
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