Forest Ecosystem Monitoring Cooperative(802) 656-0683femc@uvm.eduwww.uvm.edu/femc705 Spear StreetSouth BurlingtonVermont05403United States of AmericaNortheastern States Research Cooperative funderNortheastern Forest Health Trend Index Derived from Landsat ImageryForest health in the northeast is of increasing concern due to climate change and anthropogenic pressures. In order to monitor canopy condition across the region, this study uses remote sensing images, which can be used to assess the crown condition of forests over long time periods and large areas. A forest health rating based on canopy “greenness”, photosynthetic capacity, canopy density and water content was applied to Landsat TM5 satellite imagery to quantify yearly forest health from 1984 to 2009, as well as changes and trends in health over that time period. Northeastern Forest Health Trend Index Derived from Landsat ImageryPontiusJenniferMartinMaryclimate changecanopy coverforest disturbanceremote sensingForest Condition Trend Data, 1984-20091984-01-012009-12-31Spatial data (raster) of changes in forest canopy condition from 1984 to 2009, based on remote sensing dataThis study uses remote sensing images, which can be used to assess the crown condition of forests over long time periods and large areas. A forest health rating based on canopy “greenness”, photosynthetic capacity, canopy density and water content was applied.path13_14_healthtrend_exmask_gt15_lt5_final_noedge_mosaic.zipVMC.320.333mySQLJennifer Pontius. 2009. Forest Condition Trend Data, 1984-2009. University of Vermont. https://www.uvm.edu/femc/CI4/data/archive/project/northeastern-forest-health-trend-index-derived/dataset/forest-condition-trend-data-1984-2009