BackForward Satellite: NOAA-21 

Satellite details
Acronym NOAA-21
Full name National Oceanic and Atmospheric Administration - 21
WIGOS Station Identifier ---
Satellite Description
  • 2nd flight unit of JPSS which became NOAA-21
  • Main mission: operational meteorology.
  • Substantial contribution to atmospheric chemistry and climatology.
Mass at launch 2540 kg Dry mass
Power 1932 W
Data access link https://www.avl.class.noaa.gov/saa/products/welcome
Data access information

Real-time availability of ATMS, CrIS, OMPS-nadir, VIIRS by HRD.
Orbit Sunsynchronous orbit Altitude 824 km
ECT 13:30 asc

 

Space agency NOAA , NASA
Status Operational
Details on Status
(as available)
  • More details on NOAA-21 instruments including spectral responses for ATMS are here.
  • The measured spectral responses for NOAA-21 ATMS are here.
  • JPSS-2 became NOAA-21 in early 2023.
  • NOAA-21 became the primary afternoon satellite from 20 March 2024
Launch 10 Nov 2022 EOL ≥2030
Last update: 2024-04-15
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 NOAA-21

Acronym Full name
ATMS Advanced Technology Microwave Sounder
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 6M04G1D 6040 kHz RHCP D 1  kbps Transmission to TDRSS
TDRSS S-S 2247.5 MHz 6M04G1D 6040 kHz RHCP D 16.384  kbps Return from TDRSS
Command E-S 2067.27 MHz 32K0G1D 32 kHz RHCP D 16  kbps Commands
Command E-S 2067.3 MHz 512KG7D 512 kHz RHCP D   Commands (memory load)
TT & C S-E 2247.5 MHz 3M20G1D 3200 kHz RHCP D 1400  kbps Telemetry and commands (info data rate)
GPS S-S 1227.6 MHz 24M0G1D 24000 kHz RHCP D 0.05  kbps GPS reception at JPSS (info data rate)
GPS S-S 1575.42 MHz 24M0G1D 24000 kHz RHCP D 0.05  kbps GPS reception at JPSS (info data rate)
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 GHz - 57.66 GHz - QH Oxygen band, 13 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 GHz - 191.31 GHz - QH Water vapour band, 5 channels
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 26703.4 MHz 300000 kHz RHCP D 261000  kbps Stored Mission Data (info data rate)
SMD S-E 26703.4 MHz 150000 kHz RHCP D 131000  kbps Stored Mission Data (info data rate)
HRD S-E 7812 MHz 50000 kHz RHCP D 21800  kbps Real-time High Rate Data