NPOESS Status Andrew Heidinger, VIIRS OAT co-chair and Jeff Key

1. NPOESS Status Andrew Heidinger, VIIRS OAT co-chair and Jeff Key NOAA/NESDIS/Office of Research and Applications Madison, Wisconsin July 27, 2006

2. Baseline NPOESS Products (aka EDRs) pre Nunn-McCurdy

3. Nunn-McCurdy Impacts on NPOESS • The NPOESS budget went from $ 6.5B to $11.5B • Because NPOESS is run under DOD procurement procedures, this budget overrun caused a review under the Nunn-McCurdy Act. • Defense Department organized a comprehensive review of the program. • Defense Department reviewers recommended: • reducing the number of satellites planned from six to four • dropping several climate sensors, • rebidding a contract for a key scientific instrument. • The entire NPOESS contract has to be renegotiated with NGST and there may be more changes especially in the EDR generation area. • The Integrated Program Office has also been reorganized.

4. Decision Drivers in Redefining NPOESS • Continuity • Lower Risk • Growth Potential • Affordability

5. Justification for Changes: Preserves Weather Forecasting Capability Improvements • Afternoon orbit contains advanced imager and advanced sounder to enhance weather forecasting • Reliance upon METOP in mid-morning orbit • AVHRR vs VIIRS: preserves some imagery capability • METOPscatterometer and advanced atmospheric sounder enhance operational weather forecasting capability in mid morning orbit • No microwave imager/sounder on C1 • METOP scatterometer for ocean winds and waves becomes primary instrument until new imager/sounder is available on C2 • Continue reliance on DMSP (SSM/I) for ocean wind speed

6. Schedule Impacts: pre Nunn-McCurdy post Nunn-McCurdy CALENDAR YEAR AM F13 C4 F19 F20 F17 C2 M mid-AM F16 F18 Metop D Metop A Metop C Metop B C3 PM N N’ C1 NPP AQUA 05 06 07 08 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 09

7. Post N-M Sensor Manifest • 1730 Orbit (C2, C4)1330 Orbit (C1, C3)2130 Orbit • VIIRS VIIRS Metop • wave imager mwave imager SARSAT CrIS ATMS SEM OMPS (Nadir) SARSAT A-DCS CERES (C1)

8. POST N-M Sensor Integration: Non-Manifested Sensors 17301330 TSIS SESS SESS ERBS ALT APS OMPS (Limb) Information on how these sensors can be manifested will be forthcoming.

9. Sensor Configuration pre Nunn-McCurdy

10. Sensor Configuration post Nunn-McCurdy for C1 Worst Case for C1 -wave

11. Post Nunn McCurdy Sensors (from IPO brief to the SUAG on 20 July 2006) Manifested

12. NOAA Impacts and Mitigation Strategy • CMIS: Ocean wind speed and direction • Mitigation: Rely on MetOp and DMSP • SEM: Space Environment Monitor (of SESS) • Mitigation: Fly POES operational SEM instrument • Maintain capability on POES • APS: Aerosol data for air quality forecasts and role of aerosols in climate; • Mitigation: NASA still to fly first APS in this decade • ALT: Characterization of sea surface heights; • Mitigation: Navy developing mitigation plan for altimetry • ERBS: provides ability to understand changes in the Earth’s radiation budget • Mitigation: Fly NASA CERES research instrument on C1 • TSIS: ability to understand changes in solar irradiance • Not flown on NOAA satellites

13. Summary of Major N-M Impacts • CMIS is gone but a redesigned microwave imager-sounder is planned for C2 • 21:30 NPOESS satellite is gone and DOD/DOC will rely on the European METOP (AVHRR/IASI/AMSU). NO VIIRS IN MID-AM. • OMPS limb-sounder is gone. • NPP is delayed until 2010 • C1 is delayed until 2013 • C5 and C6 are gone. • NPOESS will keep space for climate sensors but will not fund their design (similar to instruments of opportunity on the GOES satellites).

14. Summary • NPOESS took a big hit in the N-M review and is a smaller program. Climate instruments may not fly (e.g., CERES, APS). • VIIRS technical issues are being solved and it should serve the aviation community well. • CrIS should provide improved AIRS performance in some regions and more spectral coverage. • Unfortunately, the microwave imager is gone until at least C2 (2016)