Bias corrected climate scenarios over Japan based on CDFDM method using CMIP5 (NIES2019)

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This dataset is bias corrected climate scenarios over Japan with the spatial resolution 1km using CMIP5. Four GCMs were selected from CMIP5; MIROC5, MRI-CGCM3, HadGEM2-ES, and GFDL-CM3. Regarding the GHGs emission pathways, RCP2.6 and RCP8.5 were used. CDFDM proposed by Iizumi et al. (2010; 2011; 2012; 2014; 2017) was applied, which is a non-parametric method in which the error is identified and corrected in each percentile. Daily data for seven variables (daily mean, max, min temperature, precipitation, solar radiation, wind speed, and relative humidity) are available from 1900 to 2100.


Release date
Temporal coverage
1900/01/01 - 2100/12/31
Data provider
Email: cgerdb_admin(at)
File format
Data volume
~800 GiB
Ver.201909 (Last updated: 2019/09/01)
Ver.202005 (Last updated: 2021/05/14)

Data Set

Daily mean Temperature (degC), Daily maximum temperature (degC), Daily minimum temperature (degC), Daily precipitation (mm/day), Global solar radiation (MJ/m2/day), 10m wind speed (m/s), and Surface relative humidity (%)
Japan (122-146°E, 24-46°N, over land only)
Time resolution
1 day
Spatial resolution
1 x 1 km
Calculation method
Bias correction using CDFDM method. The CDF for the calibration period was conducted for early- (January to June) and late-seasons (July to December), respectively. Daily observational data from 1980 to 2018 were utilized to maximize the reference period. As the historical period was defined up to 2005 in CMIP5, we employed daily GCM data from 1967 to 2005 to define the GCM error. As reference data, we used the Agro-Meteorological Grid Square Data (Ohno et al. 2016). Data formats were based on the Gregorian calendar.
Monthly mean based on the daily data is also provided.
Models/Analyses > Climate Models
Atmosphere > Atmospheric Temperature > Surface Air Temperature
Atmosphere > Precipitation > Precipitation Amount
[Free keywords]
Climate scenario, CMIP5, Bias correction, CDFDM, Impact assessment
Update history
Dataset was updated by using modified method so that the monthly value corresponds to that of observation. Reference period was set from 1980 to 2018 for both of observation and GCM data. For this period, we used historical data for the period 1980-2005 and RCP8.5 experiment data for the period 2006-2018 in each GCM. Ver.202005.
Dataset was released. Ver.201909.


Ishizaki, N. N., M. Nishimori, T. Iizumi, H. Shiogama, N. Hanasaki, and K. Takahashi (2020) Evaluation of two bias-correction methods for gridded climate scenarios over Japan. SOLA, 16, 80-85., doi:10.2151/sola.2020-014.

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When this data set is referred to in publications, it should be cited in the following format.
Ishizaki, N. N., 2020: Bias corrected climate scenarios over Japan based on CDFDM method using CMIP5 (NIES2019), Ver.xxxxxx *1, Center for Global Environmental Research, NIES, doi:10.17595/20200415.001, (Reference date*2: YYYY/MM/DD)
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