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Atmosphere, 2017 Sensitivity tests based on a spectral nudging (SN) technique are conducted to analyze the effect of large-scale environmental factors on the movement of typhoon Megi (2010).
Xingliang Guo
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A Spectral Nudging Technique for Dynamical Downscaling Purposes
Monthly Weather Review, 2000The ‘‘spectral nudging’’ method imposes time-variable large-scale atmospheric states on a regional atmospheric model. It is based on the idea that regional-scale climate statistics are conditioned by the interplay between continental-scale atmospheric conditions and such regional features as marginal seas and mountain ranges.
Hans von Storch +2 more
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Spectral nudging sensitivity experiments in a regional climate model
Asia-Pacific Journal of Atmospheric Sciences, 2012In this study, the scale selective bias correction (SSBC) method described by Kanamitsu et al. (2010) is further examined by considering the full wind nudging and the vertically weighted damping coefficient. The 2001 June–July–August RSM simulation over a relatively large domain covering much of the Asian continent, the northern part of Australia, and ...
Song-You Hong, Eun-Chul Chang
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Atmosphere, 2018 Atmospheric moisture pathways to the highlands of the tropical Andes Mountains were investigated using the Weather Research and Forecasting (WRF) model, as well as back-trajectory analysis.
Katja Trachte
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 Spectral nudging in an hourly 4DVar framework: Status and Plans
2021<p>The Met Office hourly 4D-Var was introduced operationally to its convective-scale limited area model (UKV) in summer 2017, improving forecast skill for nowcasting and short-range purposes. However, in recent tests a downscaler run from a global analysis tends to be better than hourly 4D-Var, especially for some variables (e.g.
Marco Milan +5 more
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Impact of spectral nudging on the downscaling of tropical cyclones in regional climate simulations
Advances in Atmospheric Sciences, 2016This study investigated the simulations of three months of seasonal tropical cyclone (TC) activity over the western North Pacific using the Advanced Research WRF Model. In the control experiment (CTL), the TC frequency was considerably overestimated. Additionally, the tracks of some TCs tended to have larger radii of curvature and were shifted eastward.
Suk-Jin Choi, Dong-Kyou Lee
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Impacts of the spectral nudging technique on simulation of the East Asian summer monsoon
Theoretical and Applied Climatology, 2009This study assesses the performance of spectral nudging methodology in dynamical regional climate downscaling for summer climate over East Asia. The regional climate model NCAR-MM5v3 was used to dynamically downscale the 2.5-degree NCEP/NCAR reanalysis (NNRP) data onto 50-km regional grids. The main focus is the model’s simulation of precipitation. The
Jianping Tang, Shi Song, Jian Wu
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Earth and Space ScienceThe rapid advancement of data‐driven machine learning (ML) models has improved typhoon track forecasts, but challenges remain, such as underestimating typhoon intensity and lacking interpretability. This study introduces an ML‐driven hybrid typhoon model,
Lin Deng, Zeyi Niu
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Climate storylines using the spectral nudged simulations with IFS-FESOM
We are presenting our efforts to incorporate spectral nudging capabilities into the development and assessment of model-driven storyline scenarios using a km-scale coupled climate model. Working within the framework of the EU’s Destination Earth project, we are working towards this objective by employing the ocean sea-ice model FESOM coupled ...Amal John +5 more
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Sensitivity of a Spectrally Filtered and Nudged Limited-Area Model to Outer Model Options
Monthly Weather Review, 1996Abstract Numerical filters required to control spatial computational modes in a limited-area model (LAM) that uses the unstaggered. A grid are developed and tested over the complex topography of the Great Basin of the western United States. The filters are founded upon Fourier expansions of forecast deviation fields and function equally effectively for
Kim M. Waldron +2 more
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