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Full-Text Articles in Geography
Continuity Of Landsat Obersvations: Short Term Considerations, Michael A. Wulder, Joanne C. White, Jeffrey G. Masek, John Dwyer, David P. Roy
Continuity Of Landsat Obersvations: Short Term Considerations, Michael A. Wulder, Joanne C. White, Jeffrey G. Masek, John Dwyer, David P. Roy
GSCE Faculty Publications
As of writing in mid-2010, both Landsat-5 and -7 continue to function, with sufficient fuel to enable data collection until the launch of the Landsat Data Continuity Mission (LDCM) scheduled for December of 2012. Failure of one or both of Landsat-5 or -7 may result in a lack of Landsat data for a period of time until the 2012 launch. Although the potential risk of a component failure increases the longer the sensor's design life is exceeded, the possible gap in Landsat data acquisition is reduced with each passing day and the risk of Landsat imagery being unavailable diminishes for …
Exploiting The Power Law Distribution Properties Of Satellite Fire Redaiative Power Retrials: A Method To Estimate Fire Radiative Energy And Biomass Burned From Sparse Satellite Observations, S. S. Kumar, David P. Roy, L. Boschetti, R. Kremens
Exploiting The Power Law Distribution Properties Of Satellite Fire Redaiative Power Retrials: A Method To Estimate Fire Radiative Energy And Biomass Burned From Sparse Satellite Observations, S. S. Kumar, David P. Roy, L. Boschetti, R. Kremens
GSCE Faculty Publications
Instantaneous estimates of the power released by fire (fire radiative power, FRP) are available with satellite active fire detection products. The temporal integral of FRP provides an estimate of the fire radiative energy (FRE) that is related linearly to the amount of biomass burned needed by the atmospheric emissions modeling community. The FRE, however, is sensitive to satellite temporal and spatial FRP undersampling due to infrequent satellite overpasses, cloud and smoke obscuration, and failure to detect cool and/or small fires. Satellite FRPs derived over individual burned areas and fires have been observed to exhibit power law distributions. This property is …
Geography Newsletter, Department Of Geography
Geography Newsletter, Department Of Geography
Geography Newsletter
Contents:
Romanian Delegation [Page] 2
AAG Great Plains? Rocky Mountain Regional Meeting [Page] 2
Professor Donald J. Berg [Page] 3
Enhancing the Physical Geography Laboratory Curriculum [Page] 3
Georgia's Been on My Mind [Page] 4
Graduate Student Travel to the Philippines [Page] 4
42nd Annual South Dakota State Geography Convention [Page] 6
2010 Scholarships [Page] 7
Student Graduations [Page] 7
Research in the Department [Page] 8-10
Alumni News [Page] 11-13
Supporting Geography [Page] 13
Fritz's Retirement Gathering [Page] 14
Upscaling Carbon Fluxes Over The Great Plains Grasslands: Sinks And Sources, Li Zhang, Bruce K. Wylie, Lei Ji, Tagir G. Gilmanov, Larry L. Tieszen, Daniel M. Howard
Upscaling Carbon Fluxes Over The Great Plains Grasslands: Sinks And Sources, Li Zhang, Bruce K. Wylie, Lei Ji, Tagir G. Gilmanov, Larry L. Tieszen, Daniel M. Howard
Natural Resource Management Faculty Publications
Previous studies suggested that the grasslands may be carbon sinks or near equilibrium, and they often shift between carbon sources in drought years and carbon sinks in other years. It is important to understand the responses of net ecosystem production (NEP) to various climatic conditions across the U.S. Great Plains grasslands. Based on 15 grassland flux towers, we developed a piecewise regression model and mapped the grassland NEP at 250 m spatial resolution over the Great Plains from 2000 to 2008. The results showed that the Great Plains was a net sink with an averaged annual NEP of 24 ± …