What is the VIIRS technology?
Table of Contents
What is the VIIRS technology?
The VIIRS instrument observes and collects global satellite observations that span the visible and infrared wavelengths across land, ocean, and atmosphere. A whiskbroom radiometer by design, it has 22 channels ranging from 0.41 μm to 12.01 μm.
What is the difference between MODIS and VIIRS?
The MODIS thermal band detects hot spots with a resolution of 1,000 meters per pixel; VIIRS detects hot spots at a resolution of 375 meters per pixel. In other words, VIIRS makes fire observations that are about three times more detailed than MODIS.
What is the spatial resolution of VIIRS?
The VIIRS instrument provides 22 spectral bands from 412 nanometers (nm) to 12 micrometers (µm) at two spatial resolutions, 375 meters (m) and 750 m, which are resampled to 500 m, 1 km, and 0.05 degrees in the NASA produced data products to promote consistency with the MODIS heritage.
What is Suomi NPP VIIRS?
Sensor Summary. The Visible and Infrared Imager/Radiometer Suite (VIIRS) is a multi-disciplinary instrument that is being flown on the Joint Polar Satellite System (JPSS) series of spacecraft, including the Suomi National Polar-orbiting Partnership (S-NPP) that launched in October 2011.
What is VIIRS sensor?
VIIRS features daily imaging capabilities across multiple electromagnetic spectrum bands to collect high-resolution atmospheric imagery and other instrument products, including visible and infrared images of hurricanes and detection of fires, smoke and particles in the atmosphere, such as dust.
What is VIIRS alert?
VIIRS is a weather monitoring equipment placed in satellites orbiting the earth. It is basically a sensor, that was designed and manufactured by Raytheon company. It collects imagery and radiometric measurements of atmosphere, land, cryosphere and oceans.
What is VIIRS fire alert?
What is VIIRS? VIIRS is a weather monitoring equipment placed in satellites orbiting the earth. It is basically a sensor, that was designed and manufactured by Raytheon company. It collects imagery and radiometric measurements of atmosphere, land, cryosphere and oceans.
How often is VIIRS updated?
The VIIRS instrument aboard the Suomi NPP and NOAA-20 satellites acquire data continuously. The 3,040 km VIIRS swath enables ≈15% image overlap between consecutive orbits at the equator, thereby providing full global coverage every 12 hours.
What is VIIRS 375m?
What is the the VIIRS 375 m active fire product? The Visible Infrared Imaging Radiometer Suite (VIIRS) 375 m thermal anomalies / active fire product provides data from the VIIRS sensor aboard the joint NASA/NOAA Suomi National Polar-orbiting Partnership (Suomi NPP) and NOAA-20 satellites.
How do I download data from VIIRS?
In the VIIRS Product Table, you can click on each surface reflectance product to obtain more information and to find links to access the data. NASA Earthdata Search provides access to surface reflectance data as well as the other NASA VIIRS products.
What can VIIRS detect?
The VIIRS I-Band 375 m Active Fire Product Algorithm The algorithm uses all five 375 m VIIRS channels to detect fires and separate land, water, and cloud pixels in the image. Additional 750 m channels complement the available VIIRS multispectral data.
What is Viirs fire alert?
What is MODIS fire data?
MODIS Burned Area Products It detects the approximate date of burning at 500m by locating the occurrence of rapid changes in daily surface reflectance time series data. The algorithm maps the spatial extent of recent fires and not of fires that occurred in previous seasons or years.
What is VIIRS instrument?
The Visible Infrared Imaging Radiometer Suite (VIIRS) instrument collects visible and infrared images and global observations of the land, atmosphere, cryosphere and oceans.
What are hot spots in a fire?
A hotspot is a satellite image pixel with high infrared intensity, indicating a heat source. Hotspots from known industrial sources are removed; the remaining hotspots represent vegetation fires, which can be in forest, grass, cropland, or logging debris.
What is Viirs instrument?
How do I download data from Viirs?
What is VIIRS fire?
VIIRS Thermal Hotspots and Fire Activity is a product of NASA’s Land, Atmosphere Near real-time Capability for EOS (LANCE) Earth Observation Data, part of NASA’s Earth Science Data.
