Input data set: GSWP3-W5E5 (ISIMIP2a)

Climate related forcing: Observed atmospheric climate.

GSWP3 and W5E5 global meteorological forcing data processed for ISIMIP2a. Daily data covering from 1901 to 2016 on a 0.5°x0.5° lat-lon grid.

W5E5 global meteorological forcing data processed for ISIMIP2a/ISIMIP3a. Contains W5E5 data and data from the GSWP3 dataset, developed by Hyungjun Kim with support by the Japan Society for the Promotion of Science KAKENHI (16H06291).

Original W5E5 data covers the entire globe at 0.5° horizontal and daily temporal resolution from 1979 to 2016 (http://doi.org/10.5880/pik.2019.023).

In order to minimize discontinuities at the 1978/1979 transition, GSWP3 data were homogenized with W5E5 data for 1901-1978 using the ISIMIP2BASD v2.3 bias adjustment method (https://doi.org/10.5281/zenodo.3648654).

**Update**:
Combination of W5E5 v1.0 for 1979-2016 with GSWP3 v0.5b homogenized to W5E5 for 1901-1978. The homogenization reduces discontinuities at the 1978/1979 transition and was done using the ISIMIP3BASD v2.4.1 bias adjustment method (Lange, 2019; Lange, 2020).

When referring to the GSWP3 data set, the following papers should be cited:
- Dirmeyer, P. A., Gao, X., Zhao, M., Guo, Z., Oki, T. and Hanasaki, N. (2006). GSWP-2: Multimodel Analysis and Implications for Our Perception of the Land Surface. Bulletin of the American Meteorological Society, 87(10), 1381–98.
- Hyungjun Kim. (2017). Global Soil Wetness Project Phase 3 Atmospheric Boundary Conditions (Experiment 1) [Data set]. Data Integration and Analysis System (DIAS). https://doi.org/10.20783/DIAS.501

When referring to the W5E5 data set, the following papers should be cited:
- Lange, S. (2019). WFDE5 over land merged with ERA5 over the ocean (W5E5). V. 1.0. doi:10.5880/pik.2019.023
- Cucchi, M., Weedon, G. P., Amici, A., Bellouin, N., Lange, S., Müller Schmied, H., Hersbach, H. and Buontempo, C. (2020) WFDE5: bias-adjusted ERA5 reanalysis data for impact studies. Earth System Science Data, 12, 2097–2120.

When referring to the ISIMIP3BASD bias adjustment method, the following papers should be cited:
- Lange, S.: Trend-preserving bias adjustment and statistical downscaling with ISIMIP3BASD (v1.0), Geosci. Model Dev., 12, 3055–3070, https://doi.org/10.5194/gmd-12-3055-2019, 2019.
- Lange, S.: ISIMIP3BASD v2.4.1. Zenodo, doi:10.5281/zenodo.3898426, 2020.
- Lange, S.: ISIMIP3BASD v2.3. Zenodo, doi:10.5281/zenodo.3648654, 2019.

Data last replaced on June 18, 2020.
Further information at https://www.isimip.org/gettingstarted/input-data-changelog/

For ISIMIP participants, these files are available for download on the DKRZ server using the path:
* ISIMIP2a: /work/bb0820/ISIMIP/ISIMIP2a/InputData/climate_co2/climate/HistObs/GSWP3-W5E5/

For external users, these data can be downloaded from the ISIMIP Repository using the link below.