Grassland/atmosphere response to changing climate: Coupling regional and local scales
This study is an interdisciplinary research designed to increase our understanding of the ecological impacts of changes in climate and atmospheric chemistry projected to occur over the next 50 to 100 years due to globally increasing levels of CO{sub 2} and other greenhouse gases. The project study area is the North American Central Grasslands. The objectives are (1) to develop multiscaled modeling systems linking extant state-of-the-art models from the ecological and atmospheric sciences with different spatial and temporal resolutions and (2) to evaluate the response of grassland ecosystems to atmospheric change at regional and site scales. Responses are to be evaluated in terms of ecosystem function and potential biospheric impacts to climate. We report progress since the last progress report (July 1990), covering the last half of Year 1 and the first 7 months of Year 2. We have (1) refined the high resolution GRASS model, (2) completed parameterization of the GRASS model for three sites, (3) constructed a multi-scaled modeling user interface, (4) conducted preliminary modeling experiments to filter from fine to coarse scale models, (5) implemented a computer-based synoptic classification scheme ( synoptic classification processor'), a key step in the scale transition of GCM climate change scenarios, and (6) evaluated scale issues associated with linking models. We also used coarse and fine resolution ecosystem models, in a manually linked mode, to simulate ecosystem response to climate and CO{sub 2} change. 48 refs., 8 figs., 1 tab.
- Research Organization:
- Colorado State Univ., Fort Collins, CO (United States)
- Sponsoring Organization:
- USDOE; USDOE, Washington, DC (United States)
- DOE Contract Number:
- FG02-90ER60932
- OSTI ID:
- 5454461
- Report Number(s):
- DOE/ER/60932-T1; ON: DE91016906
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE
PLANT GROWTH
G CODES
PLANTS
PHYSIOLOGY
RANGELANDS
CLIMATE MODELS
CARBON DIOXIDE
CLIMATES
GENERAL CIRCULATION MODELS
GREENHOUSE EFFECT
LEAVES
METEOROLOGY
NUTRIENTS
PHOTOSYNTHESIS
PROGRESS REPORT
ROOTS
TERRESTRIAL ECOSYSTEMS
WATER
CARBON COMPOUNDS
CARBON OXIDES
CHALCOGENIDES
CHEMICAL REACTIONS
COMPUTER CODES
DOCUMENT TYPES
ECOSYSTEMS
GROWTH
HYDROGEN COMPOUNDS
MATHEMATICAL MODELS
OXIDES
OXYGEN COMPOUNDS
PHOTOCHEMICAL REACTIONS
SYNTHESIS
540210* - Environment
Terrestrial- Basic Studies- (1990-)
540110
990200 - Mathematics & Computers