VIIRS

Overview

VIIRS, a scanning radiometer, collects visible and infrared imagery and radiometric measurements of the land, atmosphere, cryosphere, and oceans. VIIRS data is used to measure cloud and aerosol properties, ocean color, sea and land surface temperature, ice motion and temperature, fires, and Earth's albedo. Climatologists use VIIRS data to improve our understanding of global climate change.

  • Mass: Approximately 275 kilograms
  • Average Power: 200 Watts
  • Development Institutions: Raytheon Company
  • Purpose: To collect measurements of clouds, aerosols, ocean color, surface temperature, fires, and albedo.

Learn more: https://jointmission.gsfc.nasa.gov/viirs.html

S-NPP/VIIRS Active Fire Algorithm

Active Fire Validation effort in South Africa

Active Fire Validation effort in South Africa

The NASA Suomi-NPP VIIRS Active Fire product suite builds on the MODIS Fire and Thermal Anomalies algorithm (MOD14/MYD14), systematically mapping global fire activity at ≤12 h intervals (~1:30am/pm local overpass times). Two VIIRS active fire products are generated independently using the available 750 m and 375 m resolution data. The 750 m fire product is a replica of the MODIS Collection 6 algorithm, which was adapted to VIIRS channels M5, M7, M11, M13, M15, M16. The product comprises active fire detection and characterization (fire radiative power [FRP]) over land and water (e.g., gas flares). The 750 m product, most importantly, provides continuity with the Earth Observing System (EOS) Moderate Resolution Imaging Spectroradiometer (MODIS) 1 km product.

Learn more: https://viirsland.gsfc.nasa.gov/Products/NASA/FireESDR.html

Latest Updates

April 1, 2017
Aqua true-color image overlaid with active-fire detections, shown in red, take from MODIS (onboard Terra and Aqua) and VIIRS (onboard Suomi-NPP), showing smoke streaming from wildfires in Guatemala on April 1st 2017.
Fires started to burn in early March in the protected regions of Sierra del Lacandón National Park (also Laguna del Tigre), which is located in the tropical rain forest in the north west of Guatemala.   Moderate Resolution Imaging Spectroradiometer (MODIS) and Visible Infrared Imaging Radiometer Suite (VIIRS) data are being used to locate fire lines that are difficult to see from the ground, and these data are also being used to analyze long term fire trends.  One Guatemalan weekly report highlighted the improved value of VIIRS data to locate small fires and the valuable long–term...
September 23, 2016
VIIRS Day-night band image of Puerto Rico acquired after the blackouts at at 2:31 a.m. local time (06:31 Universal Time) on September 22, 2016.
VIIRS Day-night band image of Puerto Rico acquired at 2:50 a.m. local time (06:50 Universal Time) on September 21, 2016. VIIRS Day-night band image of Puerto Rico acquired after the blackouts at at 2:31 a.m. local time (06:31 Universal Time) on September 22, 2016. Late on September 21, 2016, a fire at a power plant substation in southern Puerto Rico triggered a cascade of problems...
January 23, 2016
The Visible Infrared Imaging Radiometer Suite (VIIRS) on the Suomi NPP satellite acquired this image of the storm system at 2:15 a.m. EST on Jan. 23.
A massive winter storm system pummeled the eastern United States in late January 2016, with two low-pressure systems merging into a potent nor’easter that dropped heavy snow from Virginia to New England. By late afternoon on Jan. 23, snowfall totals were approaching records in several states, and hurricane-force winds were battering the coastlines and leading to serious flooding. The storm was expected to continue through the morning of Jan. 24. The Visible Infrared Imaging Radiometer...
April 29, 2015
SPoRT Satellite Imagery of Post Earthquake in Nepal Districts
Image shows a decrease in emitted light over Nepal in areas affected by the earthquake on April 25 as detected by the Visible Infrared Imaging Radiometer Suite, VIIRS, “Day-Night Band” sensor aboard the NASA/NOAA Suomi National Polar-Orbiting Partnership satellite, derived from a comparison of pre-earthquake (22 April 2015) and post-earthquake (26 April 2015) imagery.  Input satellite data were obtained in collaboration with the NASA Suomi NPP Science Investigator-Led Processing System...
July 25, 2016
Sand and Soberanes Fires Largest in California At Present
The Sand and Soberanes Fires have the unhappy distinction of the being the largest fires in California at present.  The Sand Fire, whose cause is currently under investigation, began on July 22, 2016 and quickly grew to its current size of 33,117 and is 10% contained.  The United States Forest Service, Los Angeles County Fire and Los Angeles County Sheriff's Office are in "Unified Command." Evacuations are in place. Over 2964 firefighters are engaged fighting this fire. The resources that are...
August 15, 2016
Suomi NPP VIIRS Day-Night Band Detects Power Outages
The NASA GSFC Disaster Team utilized a new algorithm for producing night time optical data, which was used as one of the assets for assessing impact of the Louisiana floods at the request of FEMA. In this case, the data was used for determining power outages as a means of mapping impact zones. (NASA Direct Readout Lab).   Top: During flood event, Aug 15th, 2016; Bottom: Before event, May 7th, 2016. A similar product developed by NASA MSFC to difference images such as...

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