ECHAM4 Climate Model Outputs for Greenhouse Gas and Aerosol Scenarios

Monthly mean grids from three runs of Germany's ECHAM4 climate model, including control, greenhouse gas, and aerosol scenarios. The model output is at T42 resolution, producing a 128x64 latitude/longitude Gaussian grid. Decadal and smoothed 30-year running means have been computed from these monthly grids by SCIOPS.

Use Cases

• Compare precipitation decadal means between the control run and the greenhouse gas run.
• Analyze smoothed 30-year running means of temperature grids for the aerosol scenario.
• Study spatial patterns on the 128x64 Gaussian grid for variables from the compounded 1%/year CO2 increase run.
• Apply 30-year mean grids, such as for 2070-2099, to a midpoint year like 2085 for trend analysis.

Strengths

• Three distinct model runs provide comparative scenarios: control, greenhouse gas, and aerosol.
• Output grids have a defined spatial resolution of approximately 2.8-degree by 2.8-degree from a 128x64 Gaussian grid.
• Dataset includes derived decadal means and smoothed 30-year running means from the original monthly data.

Limitations

• Specific row count, column list, and dataset size are unknown.
• Data is in GRIB format (Edition 1), which may require specialized tools for processing.
• The last updated date is anomalously far in the future (2159), suggesting metadata may be incorrect or placeholder.

Provenance

Source

Deutches Klimarechenzentrum (DKRZ)

Collection Method

Output from runs of the ECHAM4 climate model.

Geography

Global coverage via a latitude/longitude Gaussian grid.