About EEMT¶

Project History¶

The Effective Energy and Mass Transfer (EEMT) framework was developed by the Critical Zone Observatory community to provide a quantitative approach for understanding energy and mass flux in Earth's Critical Zone.

Timeline¶

2005: Initial EEMT framework developed by Rasmussen et al.
2011: Open system thermodynamics integration (Rasmussen et al.)
2014: Topographic and vegetation effects quantified (Rasmussen et al.)
2016: High-performance computing implementation (Swetnam et al.)
2025: Modern data infrastructure and cloud computing integration

Core Principles¶

Open Science¶

All code is open source and freely available
Methods are peer-reviewed and reproducible
Data sources are publicly accessible
Results are validated against field measurements

FAIR Data Principles¶

Findable: Comprehensive metadata and documentation
Accessible: Public repositories and APIs
Interoperable: Standard formats and protocols
Reusable: Clear licensing and attribution

Community-Driven Development¶

Collaborative development model
Multiple institutional partnerships
Student training and education
International research network

Technical Philosophy¶

Energy-Based Framework¶

EEMT uses energy flux as a common currency to integrate:

Solar radiation and climate processes
Biological productivity and carbon cycling
Hydrologic partitioning and water balance
Geomorphologic processes and landscape evolution

Scale Integration¶

From local processes to continental patterns:

Plot scale: 1-100 m² detailed process studies
Hillslope scale: 0.01-1 km² terrain effects
Catchment scale: 1-1000 km² watershed analysis
Regional scale: >1000 km² climate gradient studies

Temporal Integration¶

From daily variations to millennial trends:

Daily: Solar radiation and weather processes
Monthly: Vegetation growth and seasonal patterns
Annual: Climate averages and interannual variability
Decadal: Long-term trends and climate change
Centennial: Landscape evolution and soil formation