SMAP Overview. Ron Weaver Slides li0ed from Barry Weiss and Jennifer Cruz at JPL Barry Weiss. Jet Propulsion Laboratory
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1 SMAP Overview Ron Weaver Slides li0ed from Barry Weiss and Jennifer Cruz at JPL Barry Weiss Jet Propulsion Laboratory California Ins7tute of Technology Pasadena, CA Copyright 2011 California Institute of Technology.! Government sponsorship acknowledged.!! Pre- decisional for Planning and Discussion Purposes Only! National Aeronautics and Space Administration Jet Propulsion Laboratory California Institute of Technology Pasadena, California
2 Soil Moisture Active Passive (SMAP) Amanda Leon, Interim Product Team Lead Who/What/Where/When/Why Provide management, archival, and distribution services for the SMAP satellite Joint assignment between ASF and NSIDC DAAC ASF Radar data sets NSIDC Passive Microwave and higher order products Launch in late 2014 Major Activites Develop data archival services jointly with ASF and utilizing NSIDC DAAC assets utilizing V0 and ECS systems Deploy early adopter ftp site (2011) Coordinate data system development with the SMAP science and data systems teams Work with SMAP science team to promote wide use of SMAP data products. Deliverables SMAP early adopter data ftp site (2011) Develop data management plan (2012) Coordinate planning with Science Team (2011, 2012 Schedule Early adopter ftp site (October, 2011) Proposal for data management services (5/2013)
3 SMAP- 3 SMAP Science ObjecBves
4 SMAP- 4 SMAP ApplicaBons
5 Mission Overview The proposed SMAP mission was in the first Ber recommended by 2007 NRC Earth Science Decadal Survey Primary Science ObjecBves : Global, high- resolubon mapping of soil moisture and its freeze/thaw state to: - Link terrestrial water, energy and carbon cycle processes - EsBmate global water and energy fluxes at the land surface - QuanBfy net carbon flux in boreal landscapes - Extend weather and climate forecast skill - Develop improved flood and drought predicbon capability Observatory Features: 3-axis stabilized spacecraft with zero momentum biased attitude control Single string avionics and power control/ distribution electronics Selected redundancy in ACS sensors, actuators, and telecom radios Deployable fixed solar array Command Telemetry & Doppler via S-band to NEN & SN Science data return at 130 Mbps via an X- band link to the NEN Hydrazine blow-down propulsion Proposed Mission Implementation: Partners JPL (project & payload mgmt, science, spacecra0, radar, mission operabons, science processing) GSFC (science, radiometer, science processing) Risk D Category 2; Payload Risk Class C Launch Oct. 2014, Launch Vehicle is TBD Orbit Polar sun synchronous; 685 km albtude DuraBon 3 years Payload L- band SAR (JPL) L- band radiometer (GSFC) Shared 6m rotabng (15 rpm) antenna (JPL) SMAP- 5
6 Proposed SMAP Measurement Approach Instruments: Radar: L- band (1.26 GHz) High resolubon, moderate accuracy soil moisture Freeze/thaw state detecbon SAR mode: 3 km resolubon Real- aperture mode: 30 x 6 km resolubon Radiometer: L- band (1.4 GHz) Moderate resolubon, high accuracy soil moisture 40 km resolubon Shared Antenna 6- m diameter deployable mesh antenna Conical scan at 14.6 rpm Constant incidence angle: 40 degrees 1000 km- wide swath Orbit: Sun- synchronous orbit 6 am local Bme descending 6 pm local Bme ascending 685 km albtude Global coverage once every three days Mission OperaBons: 3- year baseline mission SMAP- 6
7 Proposed SMAP Data Products Data Product Short Name Description Grid Resolution Granule Extent SMAP- 7 L1A_Radar Parsed Radar Instrument Telemetry Half Orbit L1A_Radiometer Parsed Radiometer Instrument Telemetry Half Orbit L1B_S0_LoRes Low Resolution Radar σ o in Time Order 5x30 km (10 slices) Half Orbit L1C_S0_HiRes High Resolution Radar σ o on Swath Grid 1 km Half Orbit L1B_TB Radiometer T B in Time Order 36x47 km Half Orbit L1C_TB Radiometer T B 36 km Half Orbit L2_SM_A Radar Soil Moisture 3 km Half Orbit L2_SM_P Radiometer Soil Moisture 36 km Half Orbit L2_SM_AP Active-Passive Soil Moisture 9 km Half Orbit L3_FT_A Daily Global Composite Freeze/Thaw State 3 km North of 45 N L3_SM_A Daily Global Composite Radar Soil Moisture 3 km Global L3_SM_P Daily Global Composite Radiometer Soil Moisture 36 km Global L3_SM_AP Daily Global Composite Active-Passive Soil Moisture 9 km Global L4_SM Surface & Root Zone Soil Moisture 9 km Global L4_C Carbon Net Ecosystem Exchange 9 km North of 45 N
8 Role of the ASF and NSIDC DAACs ASF will archive and distribute the L1 acbve radar data NSIDC will archive and distribute the passive microwave and all (radar and pm) higher level products Both DAACs will build a cost effecbve synergisbc data access system from SMAP data from both archives, ancillary and other supporbng data sets.
9 Instrument Key Features To meet requirement for 3- day revisit Bme at AM local Bme 1000 km swath at km dawn/dusk sun- synchronous orbit. For wide measurement swath of combined L- Band acbve and passive measurements Conically scanning reflector antenna. To achieve L- Band passive resolubon of 40 km and and acbve resolubon of 3 km 6 meter aperture antenna 14.6 rpm rotabon rate Real- aperture radiometer SyntheBc- aperture radar processing Incidence angle Near- constant 40 deg incidence angle SMAP- 9
10 Data AcquisiBon Plan Radiometer data: ConBnuous collecbon over the enbre orbit and enbre 360 degree antenna scan Capable of periodic cold sky looks SyntheBc Aperture Radar (SAR) data: CollecBon over the enbre 360 degree antenna scan over land and coastal water during the AM orbit CollecBon over the forward porbon of the antenna scan over land and coastal water North of 45 degrees North labtude during the PM orbit. Low- resolubon, real aperture radar data ConBnuous collecbon over enbre orbit and enbre antenna scan SMAP- 10
11 SMAP Data Product Availability Data Product Short Name Description Initial Availability After Commissioning Latency to User Community after Acquisition L1A_Radar Parsed Radar Instrument Telemetry 3 months 24 hours L1A_Radiometer Parsed Radiometer Instrument Telemetry 3 months 24 hours L1B_S0_LoRes Low Resolution Radar σ o in Time Order 3 months 24 hours L1C_S0_HiRes High Resolution Radar σ o on Swath Grid 3 months 24 hours L1B_TB Radiometer T B in Time Order 3 months 24 hours L1C_TB Radiometer T B 3 months 24 hours L2_SM_A Radar Soil Moisture 3 months 48 hours L2_SM_P Radiometer Soil Moisture 3 months 48 hours L2_SM_AP Active-Passive Soil Moisture 3 months 48 hours L3_FT_A Daily Global Composite Freeze/Thaw State 6 months 72 hours L3_SM_A Daily Global Composite Radar Soil Moisture 6 months 72 hours L3_SM_P Daily Global Composite Radiometer Soil Moisture 6 months 72 hours L3_SM_AP Daily Global Composite Active-Passive Soil Moisture 6 months 72 hours L4_SM Surface & Root Zone Soil Moisture 6 months 7 days L4_C Carbon Net Ecosystem Exchange 6 months 14 days SMAP- 11
12 National Aeronautics and Space Administration Jet Propulsion Laboratory California Institute of Technology Pasadena, California Data Product Short Name An<cipated SMAP Data Product Volumes Description Daily Volume (GBytes) Yearly Volume (TBytes) L1A_Radar Parsed Radar Instrument Telemetry L1A_Radiometer Parsed Radiometer Instrument Telemetry L1B_S0_LoRes Low Resolution Radar σ o in Time Order L1C_S0_HiRes High Resolution Radar σ o on Swath Grid L1B_TB Radiometer T B in Time Order L1C_TB Radiometer T B L2_SM_A Radar Soil Moisture L2_SM_P Radiometer Soil Moisture L2_SM_AP Active-Passive Soil Moisture L3_FT_A Daily Global Composite Freeze/Thaw State L3_SM_A Daily Global Composite Radar Soil Moisture L3_SM_P Daily Global Composite Radiometer Soil Moisture L3_SM_AP Daily Global Composite Active-Passive Soil Moisture L4_SM Surface & Root Zone Soil Moisture L4_C Carbon Net Ecosystem Exchange /23/2011 Pre-decisional for Planning and Discussion Purposes Only.! SMAP- 12
13 National Aeronautics and Space Administration Jet Propulsion Laboratory California Institute of Technology Pasadena, California SMAP Project Dates Project Dates Project PDR Oct 12-13, 2011 Mission Sys PDR Nov 14-15, 2011 Project CDR May 13, 2012 MS CDR Nov 21, 2012 FS I&T Start Dec 27, 2013 ORR Aug 20, 2014 Launch Oct 19, 2014 SDS Release Dates Internal-R2 Mar 15, 2012 R3 Feb 2, 2013 R4 Sep 5, 2013 Initial version to support ATLO tests R5 May 1, 2014 Launch version JPL/Caltech proprietary. Not for public release or redistribution. For planning and discussion purposes only. JWCruz - 13
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