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NPOESS Preparatory Project NPP

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Title: NPOESS Preparatory Project NPP


1
NPOESS Preparatory Project (NPP)
  • Status Briefing for the
  • Investigators Working Group
  • June 15, 1999

R E Murphy NPP Mission Formulation Scientist
2
NPPMission Objectives
  • Provide NASA with continuation of global change
    parameters after Terra and EOS PM
  • atmospheric temperature and humidity sounding,
    sea surface temperature, land and ocean
    biological productivity, and cloud and aerosol
    properties
  • Provide NPOESS with pseudo-operational
    risk-reduction demonstration and validation for 3
    of the 4 critical NPOESS instruments and
    algorithms
  • VIIRS, CrIS, ATMS

Joint NASA/IPO flight of critical imager and
sounding systems
3
NPPKey Personnel
  • NASA/GSFC Project Formulation Manager Raynor
    Taylor
  • IPO Space Segment Lead Michael Crison
  • NASA/HQ Program Coordinator Victoria Elsbernd
  • NASA/HQ Program Scientist James Dodge
  • NASA/GSFC Mission Formulation Scientist Robert
    Murphy
  • NASA/GSFC Sounder Suite Instrument Scientist
    Joel Susskind
  • NASA/GSFC Imager Suite Instrument Scientist
    Jeffrey Privette

4
NPPPreliminary Mission Concept
  • Payloads CrIS, ATMS, VIIRS
  • Orbit 833 km, Polar Sun-Synchronous, 1030 a.m.
    Descending Node
  • Launch Readiness Date 2005
  • Mission Life 5 years
  • Stored Mission Data Transmission to Polar Ground
    Stations (Ka- or X-band)
  • Direct Broadcast of Real-time Data (X-band)
  • Command and Control
  • Primary S-band Space-Ground
  • Back-up S-band through TDRSS and AF Satellite
    Control Network

5
Satellite Launch Schedule - Original
EOS-AM2
EOS-AM3
EOS-PM2
EOS-PM3
6
Satellite Transition Schedule
7
NPP Contributions to 24 NASA Measurements
  • Primary source for 13 of 24 measurements
  • Secondary source for 1 of 24 measurements
  • VIIRS contributes to
  • 4 (3 Primary) Atmosphere Measurements
  • 6 (4 Primary) Land/Cryosphere Measurements
  • 3 (2 Primary) Ocean/Cryosphere Measurements
  • CrIS/ATMS contributes to
  • 4 (2 Primary) Atmosphere Measurements
  • 1 Ocean/Cryoshpere Measurements

8
NPP Contributions to NPOESS
  • Sensor Risk Reduction
  • Early delivery, sensor-level tests, and
    system-level integration test
  • Provides lessons learned and allows for any
    required modifications in time to support C1
    launch readiness
  • Ground System Risk Reduction
  • Early delivery and pseudo-operational test of
    NPOESS ground system architecture and components
  • Early user evaluation of NPOESS data products
  • Provides algorithm/sensor verification and
    opportunities for sensor calibration / validation
  • VIIRS makes primary contributions to 26 of 61
    EDRs
  • CrIS/ATMS makes primary contributions to 3 of 61
    EDRs
  • Allows for algorithm modifications prior to C1
    launch
  • Provides opportunities for pseudo operational
    utilization/ demonstration of NPOESS imager and
    sounder data products

9
NPP Status
  • Agreement between NASA HQ and IPO to study
    feasibility
  • GSFC led concept study with IPO participation
  • Determined mission feasible
  • Determined ATMS feasible
  • Results of feasibility study presented to Dr.
    Asrar and Mr. Winokur on April 8, 1999
  • Agreement in principle to proceed with next phase
    (Phase I/Phase B/Mission Formulation Phase)
  • Concurrence with proposed division of
    responsibility and augmentation of VIIRS (pending
    concurrence of EXCOM)

10
NPP Status (Cont.)
  • Competitive Phase B Studies Underway for CrIS
    VIIRS
  • ITT SBRS were selected
  • CrIS Downselect is underway. Decision by August,
    1999
  • VIIRS downselect in mid 2000
  • ATMS Phase B study begins in fall 1999
  • Completed in 10 months
  • Contracts are for sensor and algorithms
  • Each contractor has internal science team and
    external science advisors
  • Government science oversight from Operational
    Algorithm Teams

11
Environmental Data Records (EDRs)
  • IPO solicits solutions to provide Environmental
    Data Records - EDRs
  • Interagency process developed Integrated
    Operational Requirements Document (IORD)
  • NASA participated in process
  • Extensive competitive phase B studies for key
    sensors
  • NASA participated in process
  • Contractors develop sensor and algorithm package
    to meet requirement.
  • Government does not write conventional
    specification

12
Merging NASA Requirements into IPOs
  • Operational Algorithm Teams (OATs) provide
    science guidance to the IPO on specific
    measurement suites
  • NASA participates in process
  • Sounding requirements deemed to be the same
  • Original plan used AIRS follow-on
  • Imaging requirements updated after year long
    study to migrate selected MODIS products into
    VIIRS requirements
  • Both contractors studied impact
  • Newly formed Interim Science Panel (ISP) works
    with OATS to guide continuing process

13
Level 1 Requirements IR Microwave Sounding
Suite
  • Purpose is to
  • Monitor climate trends and variability
  • Initialize global weather models
  • Highest quality data from CrIS, all weather data
    from ATMS
  • Uncertainty in temperature profiles
  • 1K in each 1km thick layer from the surface to
    near 300 mb
  • 1K in each 3 km thick layer from 300 mb to 30 mb
  • 1K in each 5 km thick layer from 30 mb to 1 mb.
  • Uncertainty in moisture profiles
  • 5 of the amount of precipitable water in each 2
    km thick layer from the surface to near 200 mb

14
CrIS ATMS Characteristics
  • CrIS extends the measurement series of AIRS
  • Interferometer Based Design
  • Contractor specifies design to meet EDR
    requirements
  • Details are competition sensitive at this time
  • ATMS extends the measurement series of AMSU A
    HSB
  • Compact design using miniaturized low noise
    amplifiers, etc
  • Includes (as options) AMSU A2 channels at 23.8
    31.4 GHz and 118 GHz Channels
  • NASA/GSFC point design shows capability to meet
    IPO mass/power/volume contraints

15
Level 1 Requirements Visible Infrared Imaging
Radiometer Suite
  • Purpose
  • Provide continuous time series of a wide range of
    surface atmospheric properties
  • Measurement Quality
  • Comparable or better than heritage sensors
    (SeaWiFS, MODIS)
  • Direct Broadcast of all data
  • Requirements described in other tables

16
VIIRS Characteristics
  • VIIRS extends the measurement series of MODIS
  • Approximately 20 bands (vs 36 on MODIS)
  • Spectral range is 0.4 - 13 µm
  • Includes a low light level imager capability
  • Reminder Sensor characteristics determined by
    contractor to meet EDR requirements. Number of
    bands etc are not yet determined.
  • VIIRS will
  • Provide Near MODIS Quality for Most Data Products
  • Match MODIS quality for Selected Long Term
    Measurements (SST, Land Cover)
  • Exceed MODIS Quality for a Few Measurements
    (Fires)
  • Not Support Selected Advanced MODIS Features
    (Ocean Fluorescence, Sounding)

17
Proposed NPP Ground Data System
  • GCC Needs
  • Continuity of data products
  • Configuration control of science data products
  • Capability for processing/reprocessing of a
    research quality Level 1B product
  • Generation of selected, higher level science
    quality products
  • Robust calibration and validation
  • Flexible, long term access of archived data
    holdings
  • Proposed NPP Data System Augmentation to Support
    the GCC
  • Leverage use of IPO data routing and RDR
    handling utilization of operational products
    having acceptable science quality
  • Provide a Level 1B processing/reprocessing
    capability data delivery for higher level
    product generation and analysis
  • Provide a robust, science level calibration and
    validation capability

18
Proposed NPP Ground Data System Transition
  • Identify active and long term archive needs
    support NESDIS funding request efforts
  • Support development/definition of IDPS
  • Establish the cal/val process which can be
    transferred/incorporated into NOAA
  • Migrate improved processing algorithms migrate
    mature Level 2/3 products to NOAA
  • Transfer Level 1B processing/reprocessing
    capability/system to NOAA
  • Support definition of upgrades to NESDIS systems
    to ensure GCC needs are incorporated phased,
    incremental user load increase

19
NPOESS Candidate Ground Data System Architecture
Data Routing Retrieval
Product Equivalents (approx.) RDR Level 0 SDR
Level 1 EDR Level 2/3
RDRs
IDPS
NPOESS
RDRs SDRs EDRs
Outside scope of NPOESS
SDRs EDRs
Institutional Systems
Institutional Systems
NOAA NESDIS
Air Force Weather Agency
Global Change Community
Institutional Systems
Institutional Systems
FNMOC
55th Space Weather Sq
Institutional Systems
- IPO funded - Other
NAVOCEANO
20
NPPScience Direction
  • Interim Science Panel active until competitive
    downselects are completed
  • Small competed science team to be formed after
    downselect
  • Science Panel/Science Team provides study
    scientists with guidance on NASA needs

21
NPPInterim Science Panel
  • Aumann, George (JPL)
  • Esaias, Wayne (NASA/GSFC)
  • Estes, Jack (UCSB)
  • Janetos, Tony (WRI)
  • Menzel, Paul (NOAA/SSEC)
  • Minnett, Peter (U Fla)
  • Murphy, Robert (NAS/GSFC)
  • Privette, Jeffrey (NASA/GSFC)
  • Susskind, Joel (NASA/GSFC)
  • Revercomb, Hank (UWI/SSEC)

22
Atmospheric Measurements
Cloud Properties MODIS, GLAS, AMSR-E, MISR,
AIRS, ASTER, (amount, optical properties,
height) EOSP, SAGE III Radiative Energy Fluxes
CERES ACRIM, TSIM, MODIS, AMSR-E, (top of
atmosphere, surface) GLAS, MISR, AIRS, ASTER,
SAGE III Precipitation AMSR-E Tropospheric
Chemistry TES, MOPITT, SAGE III, MLS, HIRDLS,
LIS (ozone, precursor gases) Stratospheric
Chemistry MLS, HIRDLS, SAGE III, OMI,
TES (ozone, ClO, BrO, OH, trace gases) Aerosol
Properties SAGE III, HIRDLS, MODIS,
MISR (stratospheric, tropospheric) EOSP, OMI,
GLAS Atmospheric Temperature AIRS/AMSU, MLS,
HIRDLS, TES, MODIS Atmospheric Humidity
AIRS/AMSU/HSB, MLS, SAGE III, HIRDLS,
Poseidon 2/JMR, MODIS, TES Lightning
LIS (events, area, flash structure)
23
Solar Radiation and Land Measurements
SOLAR RADIATION Total Solar Irradiance ACRIM,
TSIM Ultraviolet Spectral Irradiance SOLSTICE
LAND Land Cover Land Use Change ETM, MODIS,
ASTER, MISR Vegetation Dynamics MODIS, MISR,
ETM, ASTER Surface Temperature ASTER, MODIS,
AIRS, ETM Fire Occurrence MODIS, ASTER,
ETM (extent, thermal anomalies) Volcanic
Effects MODIS, ASTER, ETM, MISR (frequency of
occurrence, thermal anomalies,
impact) Surface Wetness AMSR-E
24
Ocean and Cryosphere Measurements
OCEAN Surface Temperature MODIS, AIRS,
AMSR-E Phytoplankton Dissolved
MODIS Organic Matter Surface Wind Fields
SeaWinds, AMSR-E, Poseidon 2/JMR Ocean Surface
Topography Poseidon 2/JMR/DORIS (height,
waves, sea level) CRYOSPHERE Land Ice
GLAS, ASTER, ETM (ice sheet topography, ice
sheet volume change, glacier change) Sea Ice
AMSR-E, Poseidon 2/JMR, MODIS, (extent,
concentration, motion, ETM. ASTER temperature)
Snow Cover MODIS, AMSR-E, ASTER,
ETM (extent, water equivalent)
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