PROGRAM TITLE:	Anthropogenic Methane/RITG Emissions Research
ACTIVITY STREAMS:	Processes, Observations/Data Mgmt.
SCIENCE ELEMENT:	Biogeochemical Dynamics
BUDGET LINE ITEM:	EPA, ORD, Stratospheric Modification, Global 
Climate

U.S. ENVIRONMENTAL PROTECTION AGENCY
OFFICE OF RESEARCH AND DEVELOPMENT

SCIENTIFIC MERIT: This program addresses the priority scientific question 
what are the current and projected future anthropogenic and biogenic 
emissions of methane and other greenhouse gases (GHG), and precursors 
being released to the atmosphere. The EPA research involves the 
development of global GHG emissions estimates (with emphasis on 
methane) for major sources such as landfills and other waste management 
facilities, cookstoves, coal mines, and natural gas production/distribution. 
The research is providing improvements in activity data and emission 
factors. It also includes the design of software systems for storing GHG 
databases. This research contributes to determining which physical, biological, 
geological, and chemical processes are involved in global change by 
contributing to the quantification and understanding of the processes 
involved in anthropogenic emissions. This research is part of the foundation 
for understanding (1) the processes involved in generating emissions of 
RITGs, (2) the degree to which human activities influence them and (3) the 
steps that could be taken to mitigate their impacts. It will contribute to both 
global and regional scale issues. This program was recently peer reviewed by 
EPA's Science Advisory Board (May 1993) which found it to be scientifically 
sound while providing significant contributions to global climate change 
research despite limited financial resources.

STAKEHOLDERS: Linkages are currently in place (or under negotiation) 
between EPA researchers and national/international scientific programs 
through mechanisms such as IAGs and cooperative agreements. These 
groups include International Energy Agency, Gas Research Institute, Solid 
Waste Association of North America, International Solid Waste Association, 
ORNL, DOE, OECD/IPCC, and various universities (Princeton, N.C. State, etc.)

POLICY RELEVANCE: Contributes to the 1995 and subsequent IPCC 
Assessments as well as the following major milestones in the U.S. GCRP:

OBSERVING SYSTEMS AND DATA MANAGEMENT; Global Systems 1996-
2000 Milestone: Inventory of greenhouse gas emissions from developing 
countries completed;

PROCESS STUDIES; Greenhouse Gases Terrestrial Sources/Sinks: Human 
Influenced and Natural 1991-1995 Milestones: Regional fluxes of CH4 from 
biogenic and anthropogenic sources estimated; 1996-2000 Milestone: Methane, 
N2O, VOC, CO, and NOx from anthropogenic sources identified and 
quantified.

PROGRAM CONTACT: Michael A. Maxwell, EPA/AEERL (MD-63), RTP, NC 
27711, 919/541-3091.