First Instrument for JPSS-2 Satellite Arrives for Integration & Test Learn More Appl. 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. Opt. This type of imagery shows us nighttime views of clouds as well as various types of nocturnal lights, which allow us to study geophysical and socio-economic activities. This value is based on a collection of intermediate algorithm quantities used in the detection process. Additional 750 m channels complement the available VIIRS multispectral data. As a result, sub-pixel fire characterization (e.g., fire radiative power [FRP] retrieval) is only viable across small and/or low-intensity fires. Cited by links are available to subscribers only. Use these formats for best results: Smith or J Smith, Use a comma to separate multiple people: J Smith, RL Jones, Macarthur. Please note: Low confidence nighttime pixels occur only over the geographic area extending from 11deg E to 110 deg W and 7 deg N to 55 deg S. This area describes the region of influence of the South Atlantic Magnetic Anomaly which can cause spurious brightness temperatures in the mid-infrared channel I4 leading to potential false positive alarms. This panchromatic channel covers wavelengths from 0.5 to 0.9 μm, and is capable of observing the Earth in the visible/near-infrared spectral range. Kaufman et al., 1998; Giglio et al., 2003 et al. The algorithm uses all five 375 m VIIRS channels to detect fires and separate land, water, and cloud pixels in the image. Opt. Junqiang Sun, Menghua Wang, Lide Jiang, and Xiaoxiong Xiong, "NOAA-20 VIIRS polarization effect and its correction," Appl. NOAA-20 VIIRS Imagery, - Long-Term Product Monitoring, NOAA instrument status monitoring - Center for Satellite Applications and Research The product builds on the MODIS fire product heritage [Kaufman et al., 1998; Giglio et al., 2003 et al. The errors of the sensor data records (SDR or Level-1B radiance) due to the polarization effect can be as large as ∼1% for bands M1 and M2, and those in the ocean normalized water-leaving radiances are about 13% and 10% for wavelengths at 411 nm (band M1) and 445 nm (band M2), respectively. Contact your librarian or system administrator The polarization effect induces striping in imagery along the track and radiometric bias both along the scan and along the track, resulting in much larger uncertainties in the environmental data records (EDR). In addition, ocean color data from the VIIRS SNPP and NOAA-20 have the same spatial and temporal resolution, and these data are processed using the same algorithm and software package (i.e., MSL12). The follow-on Visible Infrared Imaging Radiometer Suite (VIIRS) housed in the NOAA-20 satellite was launched on 18 November 2017.

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