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The GEOS/ECCO C1440-LLC2160 Coupled Atmosphere-Ocean Simulation Dataset.
Dimitris Menemenlis1, Andrea Molod2, Christopher N Hill3
1Moss Landing Marine Laboratories, San José State University, Moss Landing, CA, USA.
Scientific Data
|May 12, 2026
Summary
NASA
Area of Science:
- Earth System Science
- Atmospheric Science
- Oceanography
Background:
- Coupled atmosphere-ocean models are crucial for understanding Earth's complex climate system.
- Previous models often lacked sufficient resolution or interactive components for detailed process studies.
Purpose of the Study:
- To create a high-resolution, coupled atmosphere-ocean simulation for studying weather and climate processes.
- To provide a "nature run" dataset for Observing System Simulation Experiments (OSSEs).
Main Methods:
- Coupled NASA Goddard Earth Observing System (GEOS) atmospheric model (7-km grid, 72 levels) with MIT general circulation model (MITgcm) ECCO ocean configuration (2-4-km grid, 90 levels).
- Incorporated astronomical tidal forcing, interactive aerosols, and aerosol-cloud interactions.
- Conducted a 14-month "nature" simulation.
Main Results:
- The simulation produced a dataset with high-frequency variability and realistic ocean vertical mixing due to tidal forcing.
- Enabled the study of coupled processes at high frequency and wavenumber.
- Captured interactive aerosol and aerosol-cloud interactions.
Conclusions:
- The NASA GEOS/ECCO Coupled Nature Run provides a valuable resource for climate research and OSSEs.
- High-resolution coupled modeling with realistic forcing enhances the representation of key Earth system processes.
- This dataset facilitates the investigation of complex, high-frequency phenomena in weather and climate.
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