| Main Title |
Aspects of Spatial and Temporal Aggregation in Estimating Regional Carbon Dioxide Fluxes from Temperate Forest Soils. |
| Author |
Kicklighter, D. W. ;
Melillo, J. M. ;
Peterjohn, W. T. ;
Rastetter, E. B. ;
McGuire, A. D. ;
|
| CORP Author |
Marine Biological Lab., Woods Hole, MA. Ecosystems Center. ;New Hampshire Univ., Durham. Inst. for the Study of Earth, Oceans and Space.;Environmental Research Lab., Athens, GA.;National Inst. for Global Environmental Change, Cambridge, MA. Northeast Regional Center. |
| Publisher |
c1994 |
| Year Published |
1994 |
| Report Number |
EPA-R-817734; EPA/600/J-94/250; |
| Stock Number |
PB94-174729 |
| Additional Subjects |
Global ;
Climatic changes ;
Soils ;
Forestry ;
Carbon dioxide ;
Atmospheric temperature ;
Sensitivity ;
Flux rate ;
Temporal distributions ;
Measurement ;
Regions ;
Air pollution ;
Fossil fuels ;
Spatial distribution ;
Mathematical models ;
Errors ;
Estimates ;
Graphs(Charts) ;
Tables(Data) ;
Reprints ;
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB94-174729 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
16p |
| Abstract |
The authors examine the influence of aggregation errors on developing estimates of regional soil-CO2 flux from temperate forests. The authors find daily soil-CO2 fluxes to be more sensitive to changes in soil temperatures than air temperature. The direct use of mean monthly air temperature with a daily flux model underestimates regional fluxes by approximately 4%. Temporal aggregation error varies with spatial resolution. Overall, the authors' calibrated modeling approach reduces spatial aggregation error by 9.3% and temporal aggregation error by 15.5%. After minimizing spatial and temporal aggregation errors, mature temperature forest soils are estimated to contribute 12.9 Pg C/yr to the atmosphere as carbon dioxide. Georeferenced model estimates agree well with annual soil-CO2 fluxes measured during chamber studies in mature temporate forest stands around the globe. (Copyright (c) 1994, American Geographical Union.) |
