Simulated and Proxy Data

The PACE Project has developed realistic, flight-like simulated Level-1B data for OCI, and simulated Level-1C data for SPEXone and HARP2. This includes a complete day in the life (DITL) for 21 March 2022, for all three instruments. The OCI simulated Level-1B data have been processed to Level-2 and Level-3 ocean color, aerosol, and cloud products using the operational software to produce a full suite of science data products that are consistent in format and content with what can be expected after PACE launch. Flight-like Level-1A and derived Level-1B data is also available for the DITL using Level-0 source data from prelaunch observatory testing that was modified to match the DITL times and processed through at-launch algorithms. Other useful proxy data include airborne measurements from airHARP, SPEX airborne, and RSP, as well as HARP cubesat that began operations in April 2020.

OCI

• Level-1A Observatory Test Data
• Level-1B Observatory Test Data (filenames start with PACE_OCI.)
• Level-1B Simulated Data (pyTOAST algorithm, filenames start with PACE_OCI_SIM.)
• Level-1C (derived from Level-1B simulation)
• Level-2 (derived from Level-1B simulation)
• Level-3 Binned (derived from Level-2)
• Level-3 Mapped (derived from Level-3 Binned)

SPEXone

• Level-1A Observatory Test Data
• Level-1C Simulated Data (SRON algorithm)
• SPEX Airborne Proxy Data (ACEPOL data description paper)

HARP2

• Level-0 Observatory Test Data
• Level-1C Simulated Data (FastMAPOL algorithm)
• AirHARP Proxy Data (ACEPOL data description paper)

RSP

• Level-1C ACEPOL Data
  
  The Research Scanning Polarimeter (RSP) is an airborne multi-angle polarimeter which can serve as a proxy for HARP-2 and SPEXone datasets for the purposes of algorithm development and testing. RSP uses a polarization compensated scanning mirror assembly to make highly accurate measurements at a maximum of 152 viewing angles and in nine spectral channels in the VIS and SWIR. Note that RSP is not an imager, but scans along the aircraft track. RSP has been deployed in many field campaigns over the last two decades, including alongside the SPEX Airborne and Air HARP instruments in the Aerosol Characterization from Lidar and Polarimeter (ACEPOL) field campaign. Data are available in a format corresponding to that of PACE L1C, without spatial gridding. Data in this format will be made available for campaigns other than ACEPOL in the future. Please contact the RSP team for data set requests. Please read the README.txt file for more information about this data. Other RSP data and more information can be found here.