National Polar-orbiting Operational Environmental Satellite System NPOESS Excerpts

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National Polar-orbiting Operational Environmental Satellite System (NPOESS) (Excerpts from) An Introduction to NPOESS presented at IGARSS 2003 Toulouse, France Integrated Program Office July 22, 2003 1

A Tri-agency Effort to Leverage and Combine Environmental Satellite Activities METOP Mission Provide a national, operational, polarorbiting remote-sensing capability NPOESS Achieve National Performance Review (NPR) savings by converging Do. D and NOAA satellite programs 0930 Incorporate new technologies from NASA Encourage International Cooperation 0530 1330 Specialized Satellites Local Equatorial Crossing Time NPOESS Saves as much as $1. 3 B from the cost of previously planned separate developments July 22, 2003 2

IORD Content Example Sea Surface Temperature (SST) • Sea Surface Temperature is defined as a highly precise measurement of the temperature of the surface layer (upper 1 meter) of ocean water. It has two major applications: 1) sea surface phenomenology, and 2) use in infrared cloud/no cloud decision for processed cloud data. The accompanying requirements apply only under clear conditions (unless specified otherwise). July 22, 2003 3

NPOESS EDR-to-Sensor Mapping 55 Product Sets [RDR, SDR, EDR] Atmospheric Vertical Moisture Profile Atmospheric Vertical Temp Profile Imagery Sea Surface Temperature Sea Surface Winds Soil Moisture Aerosol Optical Thickness Aerosol Particle Size Aerosol Refractive Index Albedo (Surface) Auroral Boundary Auroral Energy Deposition Auroral Imagery Cloud Base Height Cloud Cover/Layers Cloud Effective Particle Size Cloud Ice Water Path Cloud Liquid Water Cloud Optical Thickness Cloud Particle Size/Distribution Cloud Top Height Cloud Top Pressure Cloud Top Temperature Downward Longwave Radiance (Sfc) Downward Shortwave Radiance(Sfc) Electric Field Electron Density Profile Energetic Ions Geomagnetic Field Ice Surface Temperature In-situ Plasma Fluctuations In-situ Plasma Temperature Ionospheric Scintillation Medium Energy Charged Particles Land Surface Temperature Net Heat Flux Net Solar Radiation (TOA) Neutral Density Profile Color/Chlorophyll Ocean Wave Characteristics Outgoing Longwave Radiation (TOA) Ozone - Total Column/Profile Precipitable Water Precipitation Type/Rate Pressure (Surface/Profile) Sea Ice Characterization Sea Surface Height/Topography Snow Cover/Depth Solar Irradiance Supra-Thermal-Auroral Particles Surface Type Wind Stress Suspended Matter Total Water Content Vegetation Index VIIRS (23) CMIS (19) Cr. IS/ATMS (3) OMPS (1) SES (13) GPSOS (2) ERBS (5) TSIS (1) ALTIMETER (3) APS (4) Environmental Data Records (EDRs) with Key Performance Parameters July 22, 2003 4

NPOESS Overview • Contract was awarded on August 23, 2002 to Northrop Grumman Space Technology • Contract consists of: – 6 satellites • Taking over all government instrument contracts • Buying all “leveraged” instruments • Integrating GFE instruments (ADCS and SARSAT) – Building and deploying all ground systems • C 3 and data retrieval • Data processing hardware and software – Software for worldwide users – Operating system through IOC (2011) • with option to 2018 July 22, 2003 5

NPOESS Top Level Architecture GPS NPP (1030) NPOESS 1330 NPOESS 1730 Low Rate Data/ High Rate Data (LRD/HRD) Space Segment Command & Control Segment NPOESS 2130 NPP Science Data Segment Svalbard 15 Globally Distributed Receptor Sites Alternate MMC Mission Management at Schriever AFB Center (MMC) at Suitland NPP Data & Control Flow Data Quality SMD/HRD LRD Data Latency SMD HRD/LRD Data Availability Field Terminal Segment CLASS FNMOC NAVOCEANO AFWA ADS NESDIS/NCEP Interface Data Processing Segment NOAA Comprehensive Large NPOESS Data & Control Flow CLASS Array Data Stewardship System ADS NPP Archive & Distribution Seg 128 attributes above, 724 at, 7 below threshold 305 attributes above, 180 at, 0 below threshold Threshold Objective Operational Availability July 22, 2003 6

NPOESS Satellite CMIS ATMS Cr. IS VIIRS OMPS ERBS NPOESS 1330 Configuration Single satellite design with common sensor locations July 22, 2003 VIIRS - vis/IR imager CMIS - μwave imager Cr. IS - IR sounder ATMS - μwave sounder SESS - space environment GPSOS - GPS occultation OMPS - ozone ADCS - data collection SARSAT - search & rescue APS - aerosol polarimeter ERBS - Earth radiation budget SS - laser sensor ALT - altimeter TSIS - solar irradiance VIIRS CMIS Cr. IS ATMS SESS GPSOS OMPS ADCS SARSAT ERBS SS ALT TSIS 1330 X X X 1730 X X X X 2130 X X X 7

Interface Data Processing Segment (IDPS) July 22, 2003 8

Segment Approach • • • July 22, 2003 High performance computing hardware – Each Central has a complete system (IDP) that will generate all products within required latencies – Each IDPS or Central contains an Operations string, an Integration and Test (I&T) string, and shared disk arrays (RAID) – Operations string carries 100% reserve capacity and additional availability processors – I&T string can be used for integration and test of new software, support for technology insertion, parallel operations, failover, and algorithm development Modular, workflow managed software – Receives multiple data streams from C 3 S, processes data into RDRs, SDRs, TDRs, and EDRs, packages products into form useful for Centrals, and delivers requested products to end users – Centrals have control over what products are created, which ancillary data sets are used, and how products are delivered Same software is used in field terminals – Will be made available worldwide via download from the internet 9

IDPS Functional Diagram SDR/TDR Generation Ingest Subsystem DRR SMD Auxiliary Data Ancilla ry Data Ingest Sensor Data Ingest Auxiliary Data Ingest Ancillary Distribute Data Ancillary Data Other IDPs C 3 S RDR SDR EDR All Internal Data Types Ancil Data Requests Data Delivery Subsystem x. DR Data formatted to Centrals External Format All Internal Data Types On-Line Data Storage Ancil External Formatted Data Management Subsystem Process Initiation Processing Directives Cal/Val Subsystem Processing Status & Control Production and infrastructure management Communication services and utilities Infrastructure Subsystem Enterprise Management IDP Operator July 22, 2003 Ancil Auxil Tool Kits Cache Data Mgmt Service Auxil Work Flow Scheduling Coordination Schedule Processing History SDR Processing Subsystem EDR Generation Centrals ADS SDS CLASS C 3 S NPOESS Enterprise Management Status and Control LUTs CCB/Ingest Cal/Val Operator 10

NPOESS Algorithms as Key Inputs to User Models Payload IPT Science Algorithm Development/ Procurement SE IPT Correction requests • Incomplete delivery • Non-compliant products • Failure Analysis Sensor and Operating Environment Characterization Delivered Science Algorithms • ATBD • Science-grade code • Test Sets Science Algorithm Verification Verified Science Algorithms • ATBD • Science-grade code • Test Sets • OADs IDPS IPT Science to Operational Algorithms Operational Science Discrepancy Reports • Operational Algorithm Document • Timeliness failure Algorithm Migration • Operational-grade code • Quality failure ST&E IPT • EDR Test output Operational Verification Operational Test Reports Verified Operational Algorithms • Pass Algorithm • Operational-grade code • Fail Performance - Timeliness failure Verification - Quality failure Calibrated/Validated ST&E IPT Operational Algorithms Specific IPTs have responsibility and budget for assigned algorithm activities within program phases July 22, 2003 • Discrepancy reports • New calibration coefficients Operational Algorithm Cal/Val Discrepancy Reports • Operation • Performance • Calibration Coefficients • Operational-grade code O&S IPT User Operational Algorithm Assessment 11

Data and Metadata • Metadata being defined consistent with – National Spatial Data Infrastructure standards – operational and archival users needs • Data files being defined consistent with an NPOESS profile – lessons learned – operational and archival users needs – basic HDF feature set – consistency across products July 22, 2003 September 23, 12

Integrated Program Office Web sites NPOESS Websites –http: //www. npoess. noaa. gov –http: //npoesslib. ipo. noaa. gov/ (electronic bulletin board) July 22, 2003 13

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