Results 161 to 170 of about 2,428 (201)
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Spring hemiptera (Heteroptera) Sairam-Ugam SNPP
Kazakhstan zoological bulletin, 2022The article presents the results of the author’s research conducted in April 2022 in the Sairam- Ugam State National Natural Park, the Sairamsu tract. They live in various biotopes and play an important role in biological processes in the biogeocenosis.
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AFPEP - SNPP - L’autorité en psychiatrie
French Journal of Psychiatry, 2019Le theme de l’autorite, loin de ne concerner que l’education, la justice ou la politique auxquelles on l’associe souvent, interroge aussi le champ de la sante, et en particulier le domaine de la psychiatrie. Si l’autorite ne figure pas a proprement parler parmi les concepts classiques de la philosophie, les notions de pouvoir et d’obeissance, qui lui ...
P. Charbit, C. Gernez, M. Jurus
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On-orbit noise characterization of the SNPP VIIRS reflective solar bands
Earth Observing Systems XXII, 2017The Visible Infrared Imaging Radiometer Suite (VIIRS) aboard the Suomi National Polar-orbiting Partnership satellite has 14 reflective solar bands (RSBs) covering a spectral range from 410 nm to 2250 nm. We provide an overview of the noise characterization of the VIIRS RSB from pre-launch through more than five years of on-orbit operation.
Kevin A. Twedt +2 more
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Assessment of on-orbit crosstalk impact for SNPP VIIRS VisNIR bands
SPIE Proceedings, 2014Electronic and optical crosstalk is one of the major challenges facing space-based Earth observing sensors, the effects of which could pose serious risks to the successful retrieval of geophysical information. There was an extensive effort during the SNPP VIIRS design and testing phase to characterize the on-orbit VisNIR crosstalk and its impact on ...
Shihyan Lee +3 more
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Updates to the on-orbit calibration of SNPP VIIRS for ocean color applications
SPIE Proceedings, 2015The NASA Ocean Biology Processing Group (OBPG) has continued monitoring the SNPP VIIRS on-orbit calibration since the derivation of the calibration for Reprocessing 2014.0 of the VIIRS ocean color data set. That calibration was based on solar and lunar observations through July 2014.
Robert E. Eplee +4 more
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SNPP and NOAA-20 VIIRS on-orbit geolocation trending and improvements
Earth Observing Systems XXV, 2020Two Visible Infrared Imaging Radiometer Suite (VIIRS) sensors have been in operations for more than 8.5 and 2.5 years since they were launched in October 2011 on SNPP satellite and in November 2017 on NOAA-20 satellite, respectively. These are two satellites in the Join Polar Satellite System (JPSS) constellation, of which Suomi National Polar-orbiting
Guoqing Lin +4 more
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Comparison of Instrument Calibration Performance for the SNPP ATMS and JPSS1 ATMS
IGARSS 2018 - 2018 IEEE International Geoscience and Remote Sensing Symposium, 2018The Advanced Technology Microwave Sounder (ATMS) is a microwave radiometer instrument designed, built, and tested by Northrop Grumman in Azusa, California. Data from ATMS is used in ground processing algorithms to produce atmospheric temperature and moisture profiles, as well as precipitation rates, snow and ice coverage.
James Fuentes +3 more
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Improvements in the calibration of the SNPP VIIRS day-night band (Conference Presentation)
Earth Observing Systems XXII, 2017We present improvements to the on-orbit calibration of the day-night band (DNB) of the Visible Infrared Imaging Radiometer Suite (VIIRS) on the Suomi National Polar-orbiting Partnership (SNPP) satellite. Most important among the improvements is the expansion of the “sweet spot” from 4 o to 7.8o to increase the number of the fully illuminated scans for
Junqiang Sun, Menghua Wang
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A large decline of tropospheric NO2 in China observed from space by SNPP OMPS
Science of the Total Environment, 2019Nitrogen oxides (NOx) are important constituents of air pollution. Here we use retrievals of tropospheric NO2 column from the Ozone Mapping Profiler Suite (OMPS) Nadir Mapper (NM) onboard the Suomi National Polar Partnership (SNPP) spacecraft to analyze global changes of NO2 from 2012 to 2017. The largest decline of NO2 is detected in eastern China, at
Yuxuan Wang, Kai Yang
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Functional form of the radiometric equation for the SNPP VIIRS reflective solar bands
SPIE Proceedings, 2016The Visible Infrared Imaging Radiometer Suite (VIIRS) aboard the Suomi National Polar-orbiting Partnership (SNPP) satellite is a passive scanning radiometer and an imager, observing radiative energy from the Earth in 22 spectral bands from 0.41 to 12 m which include 14 reflective solar bands (RSBs).
Ning Lei, Xiaoxiong Xiong
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