Recommended Conferences

Environmental Chemistry 2022

Paris, France

Bio Summit 2022

London, UK

Soil Science 2022

Dublin, Ireland

A comparison of three multi-site statistical downscaling models for daily rainfall in the North Chain Plain

Author(s): Liu W, Fu G, Liu C, Charles SP


Three statistical downscaling methods (conditional resampling statistical downscaling model: CR-SDSM, the generalised linear model for daily climate time series: GLIMCLIM, and the non-homogeneous hidden Markov model: NHMM) for multi-site daily rainfall were evaluated and compared in the North China Plain (NCP). The comparison focused on a range of statistics important for hydrological studies including rainfall amount, extreme rainfall, intra-annual variability, and spatial coherency. The results showed that no single model performed well over all statistics/timescales, suggesting that the user should chose appropriate methods after assessing their advantages and limitations when applying downscaling methods for particular purposes. Specifically, the CR-SDSM provided relatively robust results for annual/monthly statistics and extreme characteristics, but exhibited weakness for some daily statistics, such as daily rainfall amount, dry-spell length, and annual wet/dry days. GLIMCLIM performed well for annual dry/wet days, dry/wet spell length, and spatial coherency, but slightly overestimated the daily rainfall. Additionally, NHMM performed better for daily rainfall and annual wet/dry days, but slightly underestimated dry/wet spell length and overestimated the daily extremes. The results of this study could be applied when investigating climate change impact on hydrology and water availability for the NCP, which suffers from intense water shortages due to climate change and human activities in recent years.

Similar Articles

How much more rain will global warming bring? Science 317: 233-235

Author(s): Wentz FJ, Ricciardulli L, Hilburn K, Mears C

Emissions pathways, climate change, and impacts on California

Author(s): Hayhoe K, Cayan D, Field CB, Frumhoff PC, Maurer EP, et al.

Impact of climate change on hydrological regimes and water resources management in the Rhine Basin

Author(s): Middelkoop H, Daamen K, Gellens D, Grabs W, Kwadijk JCJ, et al.