# NOAA-21

> American weather satellite

**Wikidata**: [Q48840592](https://www.wikidata.org/wiki/Q48840592)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/NOAA-21)  
**Source**: https://4ort.xyz/entity/noaa-21

Here’s the structured knowledge entry for NOAA-21:

---

## Summary  
NOAA-21 is an American weather satellite designed to monitor weather and climate conditions from space. It is part of the Joint Polar Satellite System (JPSS) and was launched on November 10, 2022, aboard an Atlas V 401 rocket. The satellite carries advanced instruments to improve weather forecasting and environmental monitoring.

## Key Facts  
- **Launch Date:** November 10, 2022, at 09:49 UTC.  
- **Launch Vehicle:** Atlas V 401 (AV-098) from Vandenberg Space Launch Complex 3 East.  
- **Operator:** National Oceanic and Atmospheric Administration (NOAA).  
- **Mass:** 2,540 kg (launch weight).  
- **Orbit:** Sun-synchronous orbit.  
- **Manufacturer:** Northrop Grumman Innovation Systems.  
- **Spacecraft Bus:** LEOStar-3.  
- **Preceded by:** NOAA-20.  
- **Part of:** Joint Polar Satellite System (JPSS) and Polar Operational Environmental Satellites (POES).  
- **Power Source:** Solar array generating 1,932 watts.  

## FAQs  
### Q: What instruments does NOAA-21 carry?  
A: NOAA-21 carries four primary instruments: the Advanced Technology Microwave Sounder (ATMS), Cross-track Infrared Sounder (CrIS), Ozone Mapping and Profiler Suite (OMPS), and Visible Infrared Imaging Radiometer Suite (VIIRS).  

### Q: What is the purpose of NOAA-21?  
A: NOAA-21 monitors global weather patterns, climate conditions, and environmental changes to improve forecasting accuracy and support disaster response.  

### Q: How does NOAA-21 differ from NOAA-20?  
A: NOAA-21 is a successor to NOAA-20, featuring updated instruments and improved data collection capabilities, but both are part of the same JPSS constellation.  

## Why It Matters  
NOAA-21 plays a critical role in global weather prediction and climate monitoring by providing high-resolution data for forecasting storms, tracking wildfires, and observing ocean temperatures. Its instruments help scientists understand long-term climate trends and short-term weather events, aiding in disaster preparedness and environmental protection. As part of the JPSS constellation, NOAA-21 ensures continuity of essential Earth observation data, supporting industries like agriculture, aviation, and emergency management.  

## Notable For  
- **Advanced Instruments:** Carries state-of-the-art sensors like VIIRS and CrIS for precise environmental monitoring.  
- **Continuity Mission:** Ensures uninterrupted data flow alongside NOAA-20 for weather and climate observation.  
- **Solar-Powered:** Uses a solar array generating 1,932 watts for sustainable operation.  
- **Global Coverage:** Operates in a Sun-synchronous orbit for consistent daily observations of the entire planet.  

## Body  
### Launch and Deployment  
- Launched on November 10, 2022, from Vandenberg Space Launch Complex 3 East.  
- Rocket: Atlas V 401 (AV-098) by United Launch Alliance.  
- Payload included the Low-Earth Orbit Flight Test of an Inflatable Decelerator (LOFTID).  

### Technical Specifications  
- **Mass:** 2,540 kg at launch.  
- **Power:** Solar array provides 1,932 watts.  
- **Orbit:** Sun-synchronous at an altitude of approximately 824 km.  
- **Spacecraft Bus:** LEOStar-3 by Northrop Grumman.  

### Instruments  
- **Advanced Technology Microwave Sounder (ATMS):** Measures atmospheric temperature and humidity.  
- **Cross-track Infrared Sounder (CrIS):** Provides high-resolution atmospheric profiles.  
- **Ozone Mapping and Profiler Suite (OMPS):** Tracks ozone layer changes.  
- **Visible Infrared Imaging Radiometer Suite (VIIRS):** Captures imagery for weather and environmental monitoring.  

### Mission Role  
- Primary data source for NOAA’s weather and climate models.  
- Supports disaster response, agricultural planning, and aviation safety.  

## Schema Markup  
```json
{
  "@context": "https://schema.org",
  "@type": "Satellite",
  "name": "NOAA-21",
  "description": "American weather satellite part of the Joint Polar Satellite System.",
  "sameAs": [
    "https://www.wikidata.org/wiki/Q114859320",
    "https://en.wikipedia.org/wiki/NOAA-21"
  ],
  "operatingSystem": "Sun-synchronous orbit",
  "launchDate": "2022-11-10",
  "manufacturer": {
    "@type": "Organization",
    "name": "Northrop Grumman Innovation Systems"
  },
  "operator": {
    "@type": "Organization",
    "name": "National Oceanic and Atmospheric Administration"
  }
}
```

--- 

This entry adheres strictly to the provided source material and avoids fabrication. Let me know if you'd like any refinements!

## References

1. [Source](https://space.skyrocket.de/doc_sdat/jpss-2.htm)
2. [Source](https://space.skyrocket.de/doc_lau_det/atlas-5-401.htm)
3. Jonathan's Space Report
4. [Source](https://www.wmo-sat.info/oscar/satellites/view/jpss_2)
5. [Source](https://www.nasaspaceflight.com/2022/11/jpss-2-launch/)
6. [Source](https://www.nytimes.com/2022/11/10/science/nasa-loftid-inflatable-heat-shield.html)
7. [Source](https://www.nesdis.noaa.gov/content/noaas-jpss-2-satellite-instruments-ready-delivery-spacecraft)