Search Results - "Robert E. Kennedy"

Detecting trends in forest disturbance and recovery using yearly Landsat time series: 1. LandTrendr — Temporal segmentation algorithms by Kennedy, Robert E., Yang, Zhiqiang, Cohen, Warren B.

“…We introduce and test LandTrendr (Landsat-based detection of Trends in Disturbance and Recovery), a new approach to extract spectral trajectories of land…”
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Using Landsat-derived disturbance history (1972–2010) to predict current forest structure by Pflugmacher, Dirk, Cohen, Warren B., E. Kennedy, Robert

“…Lidar is currently the most accurate method for remote estimation of forest structure, but it has limited spatial and temporal coverage. Conversely, Landsat…”
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Implementation of the LandTrendr Algorithm on Google Earth Engine by Kennedy, Robert, Yang, Zhiqiang, Gorelick, Noel, Braaten, Justin, Cavalcante, Lucas, Cohen, Warren, Healey, Sean

“…The LandTrendr (LT) algorithm has been used widely for analysis of change in Landsat spectral time series data, but requires significant pre-processing, data…”
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Attribution of disturbance change agent from Landsat time-series in support of habitat monitoring in the Puget Sound region, USA by Kennedy, Robert E., Yang, Zhiqiang, Braaten, Justin, Copass, Catharine, Antonova, Natalya, Jordan, Chris, Nelson, Peder

“…To understand causes and consequences of landscape change, it is often not enough to simply detect change. Rather, the agent causing the change must also be…”
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A Landsat time series approach to characterize bark beetle and defoliator impacts on tree mortality and surface fuels in conifer forests by Meigs, Garrett W., Kennedy, Robert E., Cohen, Warren B.

“…Insects are important forest disturbance agents, and mapping their effects on tree mortality and surface fuels represents a critical research challenge…”
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The post-conflict expansion of coca farming and illicit cattle ranching in Colombia by Murillo-Sandoval, Paulo J., Kilbride, John, Tellman, Elizabeth, Wrathall, David, Van Den Hoek, Jamon, Kennedy, Robert E.

“…Illicit cattle ranching and coca farming have serious negative consequences on the Colombian Amazon’s land systems. The underlying causes of these land…”
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Monitoring coniferous forest biomass change using a Landsat trajectory-based approach by Main-Knorn, Magdalena, Cohen, Warren B., Kennedy, Robert E., Grodzki, Wojciech, Pflugmacher, Dirk, Griffiths, Patrick, Hostert, Patrick

“…Forest biomass is a major store of carbon and thus plays an important role in the regional and global carbon cycle. Accurate forest carbon sequestration…”
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Bringing an ecological view of change to Landsat-based remote sensing by Kennedy, Robert E, Andréfouët, Serge, Cohen, Warren B, Gómez, Cristina, Griffiths, Patrick, Hais, Martin, Healey, Sean P, Helmer, Eileen H, Hostert, Patrick, Lyons, Mitchell B, Meigs, Garrett W, Pflugmacher, Dirk, Phinn, Stuart R, Powell, Scott L, Scarth, Peter, Sen, Susmita, Schroeder, Todd A, Schneider, Annemarie, Sonnenschein, Ruth, Vogelmann, James E, Wulder, Michael A, Zhu, Zhe

“…When characterizing the processes that shape ecosystems, ecologists increasingly use the unique perspective offered by repeat observations of remotely sensed…”
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Contemporary patterns of fire extent and severity in forests of the Pacific Northwest, USA (1985–2010) by Reilly, Matthew J., Dunn, Christopher J., Meigs, Garrett W., Spies, Thomas A., Kennedy, Robert E., Bailey, John D., Briggs, Kevin

“…Fire is an important disturbance in many forest landscapes, but there is heightened concern regarding recent wildfire activity in western North America…”
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Detecting forest disturbance in the Pacific Northwest from MODIS time series using temporal segmentation by Sulla-Menashe, Damien, Kennedy, Robert E., Yang, Zhiqiang, Braaten, Justin, Krankina, Olga N., Friedl, Mark A.

“…Fire, insects, and human activities are the dominant drivers of forest disturbance at the global scale. Because forests are geographically extensive and are…”
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Do insect outbreaks reduce the severity of subsequent forest fires? by Meigs, Garrett W, Zald, Harold S J, Campbell, John L, Keeton, William S, Kennedy, Robert E

“…Understanding the causes and consequences of rapid environmental change is an essential scientific frontier, particularly given the threat of climate- and land…”
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Changes over the Last 35 Years in Alaska’s Glaciated Landscape: A Novel Deep Learning Approach to Mapping Glaciers at Fine Temporal Granularity by Roberts-Pierel, Ben M., Kirchner, Peter B., Kilbride, John B., Kennedy, Robert E.

“…Glaciers are important sentinels of a changing climate, crucial components of the global cryosphere and integral to their local landscapes. However, many of…”
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How Similar Are Forest Disturbance Maps Derived from Different Landsat Time Series Algorithms? by Warren B. Cohen, Sean P. Healey, Zhiqiang Yang, Stephen V. Stehman, C. Kenneth Brewer, Evan B. Brooks, Noel Gorelick, Chengqaun Huang, M. Joseph Hughes, Robert E. Kennedy, Thomas R. Loveland, Gretchen G. Moisen, Todd A. Schroeder, James E. Vogelmann, Curtis E. Woodcock, Limin Yang, Zhe Zhu

“…Disturbance is a critical ecological process in forested systems, and disturbance maps are important for understanding forest dynamics. Landsat data are a key…”
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A carbon monitoring system for mapping regional, annual aboveground biomass across the northwestern USA by Hudak, Andrew T, Fekety, Patrick A, Kane, Van R, Kennedy, Robert E, Filippelli, Steven K, Falkowski, Michael J, Tinkham, Wade T, Smith, Alistair M S, Crookston, Nicholas L, Domke, Grant M, Corrao, Mark V, Bright, Benjamin C, Churchill, Derek J, Gould, Peter J, McGaughey, Robert J, Kane, Jonathan T, Dong, Jinwei

“…This paper presents a prototype Carbon Monitoring System (CMS) developed to produce regionally unbiased annual estimates of aboveground biomass (AGB). Our CMS…”
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A Spatiotemporal Characterization of Water Resource Conditions and Demands as Influenced by the Hydrogeologic Framework of the Willcox Groundwater Basin, Southeastern Arizona, USA by Job, Carl, Ochoa, Carlos G., Jarvis, W. Todd, Kennedy, Robert E.

“…In the Willcox Groundwater Basin (WGB), increasing rates of agricultural groundwater withdrawal have led to significant regional groundwater level decline,…”
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An empirical, integrated forest biomass monitoring system by Kennedy, Robert E, Ohmann, Janet, Gregory, Matt, Roberts, Heather, Yang, Zhiqiang, Bell, David M, Kane, Van, Hughes, M Joseph, Cohen, Warren B, Powell, Scott, Neeti, Neeti, Larrue, Tara, Hooper, Sam, Kane, Jonathan, Miller, David L, Perkins, James, Braaten, Justin, Seidl, Rupert

“…The fate of live forest biomass is largely controlled by growth and disturbance processes, both natural and anthropogenic. Thus, biomass monitoring strategies…”
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Does conserving roadless wildland increase wildfire activity in western US national forests? by Johnston, James D, Kilbride, John B, Meigs, Garrett W, Dunn, Christopher J, Kennedy, Robert E

“…Abstract National forests in the western United States are divided roughly in half between lands without roads managed for wilderness characteristics and lands…”
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Comparison and assessment of coarse resolution land cover maps for Northern Eurasia by Pflugmacher, Dirk, Krankina, Olga N., Cohen, Warren B., Friedl, Mark A., Sulla-Menashe, Damien, Kennedy, Robert E., Nelson, Peder, Loboda, Tatiana V., Kuemmerle, Tobias, Dyukarev, Egor, Elsakov, Vladimir, Kharuk, Viacheslav I.

“…Information on land cover at global and continental scales is critical for addressing a range of ecological, socioeconomic and policy questions. Global land…”
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Penumbra: A spatially distributed, mechanistic model for simulating ground-level incident solar energy across heterogeneous landscapes by Halama, Jonathan J, Kennedy, Robert E, Graham, James J, McKane, Robert B, Barnhart, Brad L, Djang, Kevin S, Pettus, Paul B, Brookes, Allen F, Wingo, Patrick C

“…Landscape solar energy is a significant environmental driver, yet it remains complicated to model well. Several solar radiation models simplify the complexity…”
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Using Radiometric and Categorical Change to Create High-Accuracy Maps of Historical Land Cover Change in Watersheds of the Great Lakes Basin by Poley, Andrew F., Bourgeau-Chavez, Laura L., Graham, Jeremy A., Vander Bilt, Dorthea J. L., Redhuis, Dana, Battaglia, Michael J., Kennedy, Robert E., French, Nancy H. F.

“…Great Lakes Basin landscapes are undergoing rapid land cover and land use (LCLU) change. The goal for this study was to identify changes in land cover…”
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