SVC PACE Draft Statement of Work

System Vicarious Calibration (SVC) of the NASA Plankton, Aerosol, Cloud, Ocean Ecosystem) PACE Observatory Using HyperNav
Statement of Work (SOW)

1. Scope of Work

This contract provides for operation and maintenance of the HyperNav hyperspectral radiometric system to support system vicarious calibration (SVC) of the NASA Plankton, Aerosol, Cloud, ocean Ecosystem (PACE) Ocean Color Instrument (OCI).

2. Background

The HyperNav system was developed under NASA contract 80GSFC22CA050 (ROSES 2019, entitled A.48 The Plankton, Aerosol, Cloud, Ocean Ecosystem (PACE) Mission System Vicarious Calibration). The purpose of the contract was to develop, implement, and deploy in situ SVC capabilities for the Ocean Color Instrument, the primary instrument on the PACE mission. System vicarious calibration combines satellite sensor data with in situ radiometric measurements to determine on-orbit calibration factors, requiring high-accuracy, hyperspectral-resolution measurements with bounded uncertainty.
HyperNav was successfully deployed in 2022 and collected pre-launch SVC measurements. The system has been deployed at four (4) different sites – Hawaii, Mo’orea, Crete, and Puerto Rico – using eight (8) HyperNav radiometric systems and eight (8) floats. These rotational deployments are approximately 60 days in duration. Over the past year, HyperNav completed twenty (20) deployments, collecting over seven hundred fifty (750) radiometric profiles. This data is currently being used by the PACE team to determine the gain coefficients for the PACE OCI sensor.

3. Objective

The objective of this contract is to sustain HyperNav operations and the collection of SVC-quality data in support of the validation of the PACE mission measurements and calibration of PACE OCI sensor products.

4. Technical Requirements

The work to be performed under this SOW includes:
4.1 HyperNav System Deployments. The Contractor shall conduct eight (8) HyperNav system deployments per year across three (3) geographical sites over the period of performance. Deployments shall be distributed as follows: three (3) deployments at the Hawaii site, three (3) deployments at the Mo'orea site, and two (2) deployments at the Puerto Rico site. Each deployment shall have a nominal duration of sixty (60) days. The Contractor shall maintain eight (8) HyperNav radiometric systems and associated float platforms to support rotational deployment operations. Deployments shall be scheduled to optimize clear-sky conditions and maintain at