Item talk:Q227203

{

 "@context": "http://schema.org/",
 "@type": "WebPage",
 "additionalType": "Program",
 "url": "https://www.usgs.gov/centers/eros/science/usgs-eros-archive-vegetation-monitoring-eviirs-remote-sensing-phenology",
 "headline": "USGS EROS Archive - Vegetation Monitoring - eVIIRS Remote Sensing Phenology",
 "datePublished": "October 12, 2022",
 "author": [],
 "description": [
   {
     "@type": "TextObject",
     "text": "Access Data"
   },
   {
     "@type": "TextObject",
     "text": "The download package for a given year includes a GeoTIFF or binary file for each of the nine metrics contained in a zip file. The actual start date and end date of source data along with a detailed description of each phenological indicator are available in the metadata provided with each download."
   },
   {
     "@type": "TextObject",
     "text": "MAXT"
   },
   {
     "@type": "TextObject",
     "text": "Parameter"
   },
   {
     "@type": "TextObject",
     "text": "TIN"
   },
   {
     "@type": "TextObject",
     "text": "Time-Integrated NDVI"
   },
   {
     "@type": "TextObject",
     "text": "Canopy photosynthetic activity across the entire growing season (interpolated NDVI)."
   },
   {
     "@type": "TextObject",
     "text": "The Remote Sensing Phenology (RSP) collection is a set of nine annual phenological metrics for the conterminous United States. Researchers at the U.S. Geological Survey (USGS) Earth Resources Observation and Science (EROS) Center utilize data gathered by satellite sensors to track seasonal changes in vegetation. The three satellite sensors that provide the raw data for the RSP program are the Advanced Very High-Resolution Radiometer (AVHRR) from National Oceanic and Atmospheric Administration (NOAA) polar-orbiting satellites and the Moderate Resolution Imaging Spectroradiometer (MODIS) carried aboard National Aeronautics and Space Administration (NASA) Terra and Aqua satellites and Visible Infrared Imaging Radiometer Suite (VIIRS). The satellite data are initially transformed into Normalized Difference Vegetation Index (NDVI) values. AVHRR NDVI, eMODIS NDVI, and eVIIRS NDVI provide the foundation for RSP. Time-series NDVI can be summarized and analyzed to produce nine key phenological indicators that represent a complete growing season. These data represent a powerful tool for documenting plant life-cycle trends over time and detecting the impacts of climate change on ecosystems."
   },
   {
     "@type": "TextObject",
     "text": "Duration"
   },
   {
     "@type": "TextObject",
     "text": "Coverage Maps indicating the availability of eVIIRS Phenology products are available for download."
   },
   {
     "@type": "TextObject",
     "text": "SOSN"
   },
   {
     "@type": "TextObject",
     "text": "MAXN"
   },
   {
     "@type": "TextObject",
     "text": "Maximum level of photosynthetic activity in the canopy (NDVI value)."
   },
   {
     "@type": "TextObject",
     "text": "End of measurable photosynthesis in the vegetation canopy (day of year)."
   },
   {
     "@type": "TextObject",
     "text": "Back to Products Overview"
   },
   {
     "@type": "TextObject",
     "text": "An annual record of nine historical Remote Sensing Phenology metrics for the conterminous United States is available at a resolution of 375-m for products derived from eVIIRS data (2012-present).An annual record of nine historical Remote Sensing Phenology metrics for the conterminous United States is available at a resolution of 375-m for products derived from eVIIRS data (2012-present).An annual record of nine historical Remote Sensing Phenology metrics for the conterminous United States is available at a resolution of 375-m for products derived from eVIIRS data (2012-present)."
   },
   {
     "@type": "TextObject",
     "text": "Digital Object Identifier (DOI)"
   },
   {
     "@type": "TextObject",
     "text": "Remote Sensing Phenology products are available in two file formats with geographic coordinates referenced to the Lambert Azimuthal Equal Area mapping grid:"
   },
   {
     "@type": "TextObject",
     "text": "End of Season NDVI"
   },
   {
     "@type": "TextObject",
     "text": "DUR"
   },
   {
     "@type": "TextObject",
     "text": "Maximum Time"
   },
   {
     "@type": "TextObject",
     "text": "EarthExplorer can be used to search, preview, and download Phenology data. The AVHRR Phenology, eMODIS Phenology, and eVIIRS Phenology collections are located under the Vegetation Monitoring > Phenology.  Data is also available from the Phenology Viewer."
   },
   {
     "@type": "TextObject",
     "text": "EOSN"
   },
   {
     "@type": "TextObject",
     "text": "SOST"
   },
   {
     "@type": "TextObject",
     "text": "Level of photosynthetic activity at the beginning of measurable photosynthesis (NDVI value)."
   },
   {
     "@type": "TextObject",
     "text": "Length of photosynthetic activity (number of days)."
   },
   {
     "@type": "TextObject",
     "text": "Start of Season NDVI"
   },
   {
     "@type": "TextObject",
     "text": "Remote Sensing Phenology Products"
   },
   {
     "@type": "TextObject",
     "text": "EOST"
   },
   {
     "@type": "TextObject",
     "text": "Time of maximum photosynthesis in the canopy (day of year)."
   },
   {
     "@type": "TextObject",
     "text": "Phenological Description"
   },
   {
     "@type": "TextObject",
     "text": "Start of Season Time"
   },
   {
     "@type": "TextObject",
     "text": "Beginning of measurable photosynthesis in the vegetation canopy (day of year)."
   },
   {
     "@type": "TextObject",
     "text": "Level of photosynthetic activity at the end of measurable photosynthesis (NDVI value)."
   },
   {
     "@type": "TextObject",
     "text": "Maximum NDVI"
   },
   {
     "@type": "TextObject",
     "text": "End of Season Time"
   },
   {
     "@type": "TextObject",
     "text": "AMP"
   },
   {
     "@type": "TextObject",
     "text": "EarthExplorer offers a year-to-year record of AVHRR Phenology data at 1-km resolution dating back to 1989, eMODIS Phenology data at 250-m resolution dating back to 2001, and eVIIRS Phenology data at 375-m resolution dating back to 2012. Nine annual historical Remote Sensing Phenology metrics for the conterminous United States are available for each data set."
   },
   {
     "@type": "TextObject",
     "text": "Amplitude"
   },
   {
     "@type": "TextObject",
     "text": "Acronym"
   },
   {
     "@type": "TextObject",
     "text": "Maximum increase in canopy photosynthetic activity above the baseline (scaled NDVI)."
   },
   {
     "@type": "TextObject",
     "text": "eVIIRS Remote Sensing Phenology Digital Object Identifier (DOI) number: 10.5066/P906EFAJ"
   },
   {
     "@type": "TextObject",
     "text": "Additional Information"
   },
   {
     "@type": "TextObject",
     "text": "Coverage Maps"
   },
   {
     "@type": "TextObject",
     "text": "Phenological Metrics"
   }
 ],
 "funder": {
   "@type": "Organization",
   "name": "Earth Resources Observation and Science (EROS) Center",
   "url": "https://www.usgs.gov/centers/eros"
 },
 "about": [
   {
     "@type": "Thing",
     "name": "Landsat"
   },
   {
     "@type": "Thing",
     "name": "Science Technology"
   },
   {
     "@type": "Thing",
     "name": "eVIIRS"
   },
   {
     "@type": "Thing",
     "name": "Information Systems"
   },
   {
     "@type": "Thing",
     "name": "Geology"
   },
   {
     "@type": "Thing",
     "name": "Remote Sensing Research and Development"
   },
   {
     "@type": "Thing",
     "name": "Vegetation, Water and Climate Dynamics"
   },
   {
     "@type": "Thing",
     "name": "Remote Sensing"
   },
   {
     "@type": "Thing",
     "name": "Climate"
   },
   {
     "@type": "Thing",
     "name": "Environmental Health"
   },
   {
     "@type": "Thing",
     "name": "Maps and Mapping"
   },
   {
     "@type": "Thing",
     "name": "Products and Datasets"
   },
   {
     "@type": "Thing",
     "name": "Water"
   },
   {
     "@type": "Thing",
     "name": "Methods and Analysis"
   },
   {
     "@type": "Thing",
     "name": "phenology"
   },
   {
     "@type": "Thing",
     "name": "Energy"
   },
   {
     "@type": "Thing",
     "name": "Vegetation Dynamics"
   }
 ]

}