Filters: Tags: NDVI (X) > Extensions: Shapefile (X)

Filters Date Range Past year (0) Past month (0) Past week (0) Past day (0) Custom range... To   Search Types Downloadable (2) Map Service (2) OGC WFS Layer (2) OGC WMS Layer (2) Shapefile (2) Contacts Alisa L Gallant U.S. Geological Survey - ScienceBase Fort Collins Science Center Aaron T Freeman Jonathan M Friedman More... Categories Data (2) Tag Types Theme (2) Place (2) Harvest Set (1) Tag Schemes None (2) Environment (1) ISO 19115 Topic Category (2) Measurements (1) View Results as: JSON ATOM CSV

Mean of the Top Ten Percent of NDVI Values in the Yuma Proving Ground during Monsoon Season, 1986-2011 This study uses growth in vegetation during the monsoon season measured from LANDSAT imagery as a proxy for measured rainfall. NDVI values from 26 years of pre- and post-monsoon season Landsat imagery were derived across Yuma Proving Ground (YPG) in southwestern Arizona, USA. The LANDSAT imagery (1986-2011) was downloaded from USGS’s GlobeVis website (http://glovis.usgs.gov/). Change in NDVI was calculated within a set of 2,843 Riparian Area Polygons (RAPs) up to 1 km in length defined in ESRI ArcMap 10.2. Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Arizona, Landsat TM, NDVI, Normalized Difference Vegetation Index, Sonoran Desert, All tags... Southwestern United States, USGS Science Data Catalog (SDC), Yuma Proving Ground, biota, climatologyMeteorologyAtmosphere, ephemeral stream channels, monsoon season, Fewer tags Boundaries of landscape block polygons analyzed for the paper, “Multi-year data from satellite- and ground-based sensors show details and scale matter in assessing climate’s effects on wetland surface water, amphibians, and landscape conditions” The polygons in this shapefile accompany the paper, “Multi-year data from satellite- and ground-based sensors show details and scale matter in assessing climate’s effects on wetland surface water, amphibians, and landscape conditions,” by Sadinski et al. (submitted). The paper describes relations between climate dynamics and key ecological conditions and processes on wetland-upland landscapes in > 30 sites distributed across four study areas in the midwestern United States. The variables studied included both ground- and satellite-based measures. The polygons in this shapefile pertain to the latter and provide the boundaries of 4-km2 blocks that subsume the field sites and provide a landscape perspective for the... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Evapotranspiration, Integrated monitoring, Landscape, MODIS, Midwest Region, All tags... NDVI, Photosynthesis, Remote sensing, Snow, U.S. Midwest, Wetlands, climatologyMeteorologyAtmosphere, environment, Fewer tags