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Filters: Tags: Landsat (X) > Types: OGC WMS Service (X) > Types: Downloadable (X)

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To determine if invasive annual grasses increased around energy developments after the construction phase, we calculated an invasives index using Landsat TM and ETM+ imagery for a 34-year time period (1985-2018) and assessed trends for 1,755 wind turbines (from the U.S. Wind Turbine Database) installed between 1988 and 2013 in the southern California desert. The index uses the maximum normalized difference vegetation index (NDVI) for early season greenness (January-June), and mean NDVI (July-October) for the later dry season. We estimated the relative cover of invasive annuals each year at turbine locations and control sites and tested for changes before and after each turbine was installed. These data were used...
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This dataset represents a summary of potential cropland inundation for the state of California applying high-frequency surface water map composites derived from two satellite remote sensing platforms (Landsat and Moderate Resolution Imaging Spectroradiometer [MODIS]) with high-quality cropland maps generated by the California Department of Water Resources (DWR). Using Google Earth Engine, we examined inundation dynamics in California croplands from 2003 –2020 by intersecting monthly surface water maps (n=216 months) with mapped locations of precipitation amounts, rice, field, truck (which comprises truck, nursery, and berry crops), deciduous (deciduous fruits and nuts), citrus (citrus and subtropical), vineyards,...
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NARWidth v.0.1 contains 6.7 million georeferenced measurements of river width at mean discharge >=30 m and an additional 1.3 million flagged width measurements of reservoirs and lakes that are connected to the fluvial network. The data set includes measurements of rivers above 60°N, where high-quality river centerline and width data are largely unavailable, but excludes very large lakes (e.g., the Great Lakes), ephemeral streams, deltaic systems, and human-made canals. Additionally, NARWidth includes a braiding index field, defined as the number of channels at each river cross section. The braiding index only includes river channels wider than 30 m, a limitation imposed by the spatial resolution of Landsat imagery....
    map background search result map search result map North American River Width Data Set (NARWidth v.0.1) Data supporting Landsat time series assessment of invasive annual grasses following energy development County-level maps of cropland surface water inundation measured from Landsat and MODIS Data supporting Landsat time series assessment of invasive annual grasses following energy development County-level maps of cropland surface water inundation measured from Landsat and MODIS North American River Width Data Set (NARWidth v.0.1)