Agriculture and Land Use National Greenhouse Gas Inventory Software logo.
Old tractor and tilling system.
Grazing cattle near body of water.
Crops on a hillside.
Thick vegetated hillside.
Image of holly.
Image of corn.

ALU Developement Team

Stephen M. Ogle, Ph.D.
Senior Scientist and Professor
Natural Resource Ecology Laboratory
and Department of Ecosystem Science and Sustainability
Colorado State University

Dr. Stephen Ogle

Dr. Stephen M. Ogle is the coordinator for the ALU software project. He is a Research Scientist and Professor at Colorado State University, and an expert on application of greenhouse gas inventory methods. He serves as lead technical compiler for several source categories in the US national greenhouse gas inventory, including Cropland Remaining Cropland and Land Converted to Cropland (carbon stock changes and non-CO2 emissions); Grassland Remaining Grassland and Land Converted to Grassland (carbon stock changes and non-CO2 emissions); Settlements Remaining Settlements and Land Converted to Settlements (carbon stock changes and non-CO2 emissions); Agricultural Soil Management (N2O); Rice Cultivation (CH4); Field Burning of Agricultural Residues (CH4 and N2O); Urea Fertilization (CO2); and Liming of Agricultural Soils (CO2). He also compiles the data for the US national representation of land associated with the greenhouse gas inventory in coordination with compilers from the USFS and NOAA. The resulting inventory products are used for reporting by the US government to the United Nations Framework Convention on Climate Change (UNFCCC). He has been a lead author on syntheses and reports prepared by the Intergovernmental Panel on Climate Change (2006 National Greenhouse Gas Inventory Guidelines and Fourth Assessment Report on Climate Change), and a coordinating lead author for the 2019 Refinement to the 2006 IPCC Guidelines for National Greenhouse Gas Inventories. Dr. Ogle has participated in international capacity-building projects to improve greenhouse gas inventory compilation in Central America, South Asia, Southeast Asia, and Eastern and Southern African Countries, providing training and tools on greenhouse gas inventory methods for the Agriculture, Forestry and Other Land Use (AFOLU) sector.

Brahadeesh Guhan Dheenadayalan Sivakami
Guhan Dhennadayalan
Picture of Shannon Spencer
Shannon Spencer

The current programming staff for the ALU software includes Shannon Spencer, who is the design and development lead, and Guhan Dheenadayalan. Past staff include Puja Gurung, Ben Johnke, Judy Hendryx, Prasanna Venkatesh, Fadi Wedyan, Shilpa Halvadar, Hussein Al-Rousan, Matt Stobber, Melannie Hartman, Stephen Williams, Fatmah Assiri, Veeresh Rudrappa, Aaron Hubert, Amy Swan, Karen Galles, Bill Tucker, Sachin Verma, and Philips Gilbert.

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