Science Algorithms

DPR Algorithm Responsibilities

• Level-1 DPR algorithms were developed by JAXA and run only at JAXA MOSS.
  • The L1B Ku and Ka products are ingested by PPS for use in later processing.

• Level-2 and Level-3 algorithms are developed and delivered to both data systems by Joint DPR Science Team algorithm leads.

• Algorithm developer codes have been integrated into the PPS.
  • Algorithms need to run in multiple environments.
    • Algorithm developer’s local configuration.
    • NASA/PPS and JAXA/MOSS data systems.

• Data formats have been coordinated with algorithm developers.

• PPS toolkit for I/O (TKIO) data structures are used for output to HDF5.

• HDF5 internal compression.

Current DPR Algorithm Codes (Versions of the DPR algorithms currently in PPS OAT)

• Level-2 Version: 20131010
  • 2AKu, 2AKa, 2ADPR
    • Orbital IFOVs. Normal, Matched, High-sensitivity scans.
• Level-3 Version: 20131011
  • Daily: full product 5.0deg and 0.25deg, no std. dev.
  • Monthly: full product, 5.0deg and 0.25 deg., w/ std. dev.
  • Joint: subset of Daily product w/ time stamped grid boxes
    • [OAT 12/1]
• Intel Fortran Version 14.0.0
  • A service pack is available but has not yet been tested.
  • Testing will be performed on current algorithm versions: 11/20/2013.
  • Results will determine if PPS/MOSS will update compilers.