ECHAM-wiso: Nudged Isotope Climate Model Simulations, 1979-2018

1979-2018 model values from four simulations produced with the isotope-enabled atmosphere GCMs ECHAM5-wiso and ECHAM6-wiso. The simulations were performed at different spatial resolutions (T63 and T127) and nudged to different reanalyses (ERA5 and ERA-Interim). The dataset was created by Alexandre Cauquoin of The University of Tokyo and described in a 2021 journal article.

Use Cases

• Analyzing annual mean 2m air temperature patterns based on the *.temp2_timmean.nc files.
• Studying stable water isotope ratios in precipitation based on the annual mean d18O and d-excess files.
• Comparing model performance across different spatial resolutions and reanalysis nudging inputs based on the four described simulations.
• Investigating regional monthly variations in climate variables based on the seasonal signals Excel files for specific stations.
• Examining water vapor transport and specific humidity based on the qtot and tropics_mermean netcdf files.

Strengths

• Covers a 40-year period from 1979 to 2018, providing a long-term climate perspective.
• Includes four distinct simulations enabling comparison of model versions (ECHAM5 vs. ECHAM6), resolutions (T63 vs. T127), and reanalysis inputs (ERA5 vs. ERA-Interim).
• Provides multiple output variables including temperature, precipitation, and water isotope ratios (d18O, d-excess).
• Data is associated with a peer-reviewed publication (Cauquoin and Werner, 2021), providing methodological context.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count and total dataset size are unknown, which may limit suitability assessment.
• Last update date is unknown; freshness unverified.

Provenance

Source

Alexandre Cauquoin, The University of Tokyo

Collection Method

Nudged simulations produced with the isotope-enabled atmosphere General Circulation Models ECHAM5-wiso and ECHAM6-wiso.

Time Range

1979-2018

Geography

Global, with some files focusing on the tropics (15°S to 15°N) and specific station locations.