TY  - CONF
AU  - Abdul-Aziz, Omar I.
AU  - Liu, Shuguang
AU  - Young, Claudia J.
AU  - Huang, Shengli
A2  - San Francisco, Calif.
ED  - in
PY  - 2010//
TI  - Regional-scale biogeochemical modeling of greenhouse gas (GHG) emissions from wetland ecosystems [abs.]
T2  - abstract number B13A-0451
BT  - Fall Meeting
VL  - Fall Meeting Abstracts
PB  - American Geophysical Union
CY  - Washington, D.C.
KW  - application
KW  - biogeochemical modeling
KW  - calibration
KW  - carbon
KW  - carbon dioxide
KW  - carbon sequestration
KW  - climate
KW  - CO2
KW  - coastal
KW  - conference abstracts
KW  - data
KW  - data availability
KW  - development
KW  - ecological
KW  - ecosystem
KW  - emission
KW  - geological surveys
KW  - GHG
KW  - global
KW  - global scale
KW  - global warming
KW  - greenhouse gas
KW  - land
KW  - land use/land cover
KW  - methane
KW  - model
KW  - modeling
KW  - nitrous oxide
KW  - oxide
KW  - parameterization
KW  - policy
KW  - prairie
KW  - prairie pothole region
KW  - processes
KW  - regional
KW  - research
KW  - scale
KW  - scenario
KW  - sequestration
KW  - spatial
KW  - structure
KW  - synthesis
KW  - temporal
KW  - tool
KW  - United States
KW  - United States Geological Survey
KW  - water
KW  - wetland
N2  - Wetlands can play an important role in carbon sequestration, greenhouse gas (GHG) emissions, and global warming. Biogeochemical models are valuable tools to quantify emissions of major GHGs such as carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O) from wetland ecosystems. Although several models can be found in literature, most of them are mainly site-scale models and only few have been developed at the global scale. Current global-scale models incorporate over-simplified process descriptions and assumptions, and fail to capture the regional or mesoscale phenomena. On the other hand, site-scale models generally involve highly detailed process descriptions that increase the model complexity while not being notably rewarding at the regional scale. Further, calibration of the site-scale models (even if slightly modified for the regional-scale applications) requires data for many input variables and parameters that may not be available at larger scales. We developed a "Unit Wetland Ecosystem" framework, which incorporates a zero-dimensional, conceptual modeling approach that can be applied in any spatial (site, regional, and global) and temporal (e.g., daily, weekly, monthly) scales. The framework is used here to develop a regional-scale model that involves a simple structure, minimum input variables, and parsimonious parameterizations based on data availability, synthesis of existing literature, and new developments, as appropriate. We applied this model to simulate the regional GHG emissions from the wetlands of the Prairie Pothole Region of the United States. The wetland biogeochemical modeling framework will also be applied to quantify wetland GHG emissions from both freshwater and coastal wetlands nationwide. This research is a part of the United States Geological Survey's ecological carbon sequestration project that aims to quantify carbon sequestration and GHG emissions of the U.S. lands and waters under changing climate, land use/land cover, and socio-economic and policy scenarios.
SN  - http://www.agu.org/meetings/fm10/waisfm10adv.html
UR  - http://www.agu.org/meetings/fm10/waisfm10adv.html
N1  - exported from refbase (http://eros.usgs.gov/refbase/show.php?record=23324), last updated on Fri, 21 Sep 2012 11:59:54 -0500
ID  - Abdul-Aziz_etal2010
ER  -