BackForward Satellite: SNPP 

Satellite details
Acronym SNPP
Full name Suomi National Polar-orbiting Partnership
WIGOS Station Identifier ---
Satellite Description
  • Prototype of the JPSS programme, originally designed as Preparatory Programme of the aborted NPOESS (National Polar-orbiting Operational Environmental Satellite System).
  • Main mission: operational meteorology.
  • Substantial contribution to atmospheric chemistry and climatology.
Mass at launch 2128 kg Dry mass 1400 kg
Power 2285 W
Data access link https://data.noaa.gov/onestop/collections?q=snpp
Data access information
  • Real-time availability of ATMS, CERES, CrIS, OMPS and VIIRS by HRD.
  • CrIS data distribution ceased Sept 2024 due to lack of LWIR channels
  • Offline data are available from CLASS.
Orbit Sunsynchronous orbit Altitude 824 km
ECT 13:25 asc

 

Space agency NOAA , NASA
Status Operational
Details on Status
(as available)
  • Tertiary PM satellite. after NOAA-21 commissioning
  • No data from 26/7/22 to 12/8/22 due to spacecraft anomaly
  • The measured spectral responses for SNPP ATMS are here
  • Satellite and instrument status here
Launch 28 Oct 2011 EOL ≥2028
Last update: 2025-01-23
Associated satellite programme and related satellites

Note: red tag: no longer operational , green tag: operational , blue tag : future

Satellite Payload

All known Instruments flying on SNPP

Acronym Full name
ATMS Advanced Technology Microwave Sounder
CERES Clouds and the Earth’s Radiant Energy System
CrIS Cross-track Infrared Sounder
OMPS-limb Ozone Mapping and Profiler Suite
OMPS-nadir Ozone Mapping and Profiler Suite
VIIRS Visible Infrared Imager Radiometer Suite
Show instrument status and calibration
Satellite frequencies for Earth Observation, data transfer and platform communications and control
Frequencies for satellite management
Service Direction Frequency (MHz) Emission designator Bandwidth (kHz) Polarisation D/A Data rate (kbps) or Baseband (kHz) Comments
TDRSS S-S 2067.27 MHz 6M04G7DDC 6000 kHz RHCP D   Trasmission to TDRSS
TDRSS S-S 2247.5 MHz 6M04G7D 6040 kHz RHCP D 32.8  kbps Return from TDRSS
Command E-S 2067.3 MHz 4K00G7D 4 kHz RHCP D 2  kbps Commands
Command E-S 2067.3 MHz 256KG7D 256 kHz RHCP D 128  kbps Commands (memory load)
TT & C S-E 2247.5 MHz 6M04G7D 6040 kHz RHCP D 1049  kbps Telemetry and commands
GPS S-S 1227.6 MHz 24M0G1D 24000 kHz RHCP D 0.05  kbps GPS reception at SNPP
GPS S-S 1575.42 MHz 24M0G1D 24000 kHz RHCP D 0.05  kbps GPS reception at SNPP
Earth observation MW frequencies
Service Sensing mode Frequency (GHz) Bandwidth (MHz) Polarisation Comments
ATMS passive 23.8 GHz 270 MHz QV Water vapour channel
ATMS passive 31.4 GHz 180 MHz QV Window channel
ATMS passive 50.3 GHz 180 MHz QH Window channels
ATMS passive 88.2 GHz 2000 MHz QV Window channel
ATMS passive 165.5 GHz 3000 MHz QH Weak water vapour channel
ATMS passive 175.31 GHz - 191.31 GHz - QH Water vapour band, 5 channels
ATMS passive 51.76 GHz 400 MHz QH Oxygen band for temperature sounding
ATMS passive 52.61 GHz - 57.61 GHz - QH Oxygen band for temperature sounding
Frequencies for scientific data acquisition and communication services at ground stations
Service Direction Frequency (MHz) Bandwidth (kHz) Polarisation D/A Data rate (kbps) or Baseband (kHz) Comments
SMD S-E 8212.5 MHz 300000 kHz RHCP D 262000  kbps Stored Mission Data
HRD S-E 7812 MHz 30000 kHz RHCP D 13000  kbps Real-time High Rate Data