viirs orbit

viirs orbit
October 28, 2020

VIIRS BB temperature trending (daily averaged over all six BB thermistors). The VIIRS instrument collects imagery of the land, atmosphere, oceans, and cryosphere … In the interim, we are building on existing regional fire networks to assess the VIIRS fire algorithm performance. It was always intended that the VIIRS instrument aboard the joint NASA/NOAA Suomi National Polar-orbiting Partnership (Suomi NPP) satellite would provide a bridge between Earth Observing System (EOS) Moderate Resolution Imaging Spectroradiometer (MODIS) and the operational Joint Polar Satellite System (JPSS) (formerly the National Polar Orbiting Operational Environmental Satellite System, or NPOESS) VIIRS. The I bands have a higher uncertainty contribution from EV noise compared to M bands at the similar wavelengths, and their uncertainty at 267 K is about 0.5 K and 0.3 K for I4 and I5, respectively. “That is the story with VIIRS and in this case, with the day-night band,” said Amber Purohit, chief engineer on the VIIRS JPSS-2 program. Together with lunar irradiance predicated by the United States Geological Survey Robotic Observatory Lunar Observatory model, a band‐averaged lunar F factor can be derived [Kieffer and Stone, 2005; Sun et al., 2012]. Typical fitting residuals are found to be within ±0.1%. In general, the TEB detector responses are extremely stable, but the RSB responses show large changes at NIR and SWIR wavelengths, primarily due to RTA mirror coating contamination [Iona et al., 2012; De Luccia et al., 2012b; Lei et al., 2012a]. The resulting NEdT at TTYP shown in Table 1 is better than the sensitivity requirement for all TEB bands (NEdT ratios < 1), and is consistent between all data sets (Columns 9–13), which correspond to a total of 5 on‐orbit BB WUCDs performed from launch to 31 May 2013. VIIRS is one of five instruments onboard the Suomi National Polar-orbiting Partnership … Small Bodies, Solar Systems Number of times cited according to CrossRef: Assessment of SNPP VIIRS RSB detector-to-detector differences using deep convective clouds and deserts. Composition and Structure, Atmospheric IGARSS 2019 - 2019 IEEE International Geoscience and Remote Sensing Symposium. All OBCs have been operated nominally according to their design and … VIIRS is one of five instruments on-board the Suomi National Polar-orbiting Partnership (S-NPP) satellite launched from the Vandenberg Air Force Base on October 28, 2011, at 5:48 a.m. Eastern Daylight Time (EDT). Analytical Relationship between Two-Band Spectral Vegetation Indices Measured at Multiple Sensors on a Parametric Representation of Soil Isoline Equations. The SV data provides measurements for the instrument background. The prelaunch screen transmission did not characterize the distinct ridges in SDSM elevation well due to inadequate angular sampling. Geophysics, Mathematical The VIIRS sensor consists of two modules (Figure 1): the electronics module providing electronic interfaces between VIIRS and the spacecraft; and the opto‐mechanical module containing all the optical and mechanical components that include the OBCs, RTA with a half‐angle mirror (HAM), aft optics, and FPAs. The VIIRS collects data in 22 spectral bands that are calibrated by a set of onboard calibrators (OBC). It also describes sensor calibration methodologies and demonstrates VIIRS on‐orbit performance from launch to present. Investigating multiple aerosol optical depth products from MODIS and VIIRS over Asia: Evaluation, comparison, and merging. JPSS polar satellites circle the Earth from pole-to-pole, providing full global coverage twice a day. Excluding special calibration and characterization events at the beginning of mission, VIIRS on‐orbit operation has been extremely stable. The dnCS and RVSCS in equation 3 are the detector response to the calibration source and the RVS at the calibration source view angle, respectively. For comparison purposes, the lunar results are also presented as symbols in Figure 6. VIIRS instrument cavity, VIS/NIR FPA, and HAM temperatures (daily averaged). Stability Monitoring of the VIIRS Day/Night Band over Dome C with a Lunar Irradiance Model and BRDF Correction. The discontinuities in the F factor trend are coincident with spacecraft maneuvers and anomalies during which the cold FPA temperatures changed. In general, the derived product of the SD BRDF and SAS transmission varies slowly, increasing with lower solar declination and roughly flat with solar azimuth. The trending starts from day 86 (21 January 2012) when the CFPA temperatures stabilized after opening the cooler door. Raytheon’s Visible Infrared Imaging Radiometer Suite, or VIIRS suite of satellite-based sensors can illuminate the sights of holiday lights from 500 miles above Earth. On-orbit calibration and characterization of GOES-17 ABI IR bands under dynamic thermal condition. It is monitored by six embedded thermistors traceable to National Institute of Standards and Technology and protected by a shield plate from stray light. The main contributor to the systematic uncertainty is the SD BRDF prelaunch characterization: 1.09% for the VISNIR bands and 1.32% for the SWIR bands [Lessel and McClain, 2007]. and Chemical Oceanography, Physical The effect of SD dn noise on the F factor uncertainty is reduced to a negligible level through averaging over many samples and scans per orbit. Terms of Use | Privacy The transmission factors shown here are for band M1, averaged over all detectors.

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