Feb 22, 2019

Amendment 67: New Opportunity in A.48 PACE System Vicarious Calibration

On or about February 22 Amendment 67 will present a new opportunity in program element A.48, Plankton, Aerosol, Cloud, Ocean Ecosystem (PACE) Mission System Vicarious Calibration.

The National Aeronautics and Space Administration (NASA) is seeking ways to provide or develop, if needed, in situ instruments, systems, and approaches for the post-launch vicarious calibration of the Plankton, Aerosol, Cloud, ocean Ecosystem (PACE; Ocean Color Instrument. Ocean color "vicarious" calibration refers to a final bias adjustment to the calibrated, spectral top-of-atmosphere radiances observed by an ocean color instrument. Proposals must consider the PACE Vicarious Calibration Plan (

This solicitation is primarily directed toward ocean color vicarious calibration. Calibration for aerosol particle and cloud measurements is encouraged if it is an inseparable part of the ocean color vicarious calibration proposed effort. A solicitation that will include calibration and validation of aerosol particle and cloud data products will be issued closer to the PACE launch.

For program element A.48 Plankton, Aerosol, Cloud, Ocean Ecosystem (PACE) Mission System Vicarious Calibration, Notices of Intent are strongly encouraged by March 26, 2019 and proposals are due May 23, 2019. Answers to submitted questions will be added as a Frequently Asked Question (FAQ) posted on the NSPIRES page for this program element.

Questions concerning this program element may be directed to Paula Bontempi at and Parminder Ghuman at