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ORIGINAL RESEARCH article

Front. Remote Sens.
Sec. Multi- and Hyper-Spectral Imaging
Volume 5 - 2024 | doi: 10.3389/frsen.2024.1333851
This article is part of the Research Topic Optical Radiometry and Satellite Validation View all 21 articles

Selecting HyperNav deployment sites for calibrating and validating PACE ocean color observations

Provisionally accepted
Paul Chamberlain Paul Chamberlain 1*Robert J. Frouin Robert J. Frouin 2Jing Tan Jing Tan 2Matthew Mazloff Matthew Mazloff 2Andrew Barnard Andrew Barnard 3Emmanuel Boss Emmanuel Boss 4Nils Haëntjens Nils Haëntjens 4Cristina Orrico Cristina Orrico 5
  • 1 University of California, San Diego, La Jolla, United States
  • 2 Scripps Institution of Oceanography, University of California, San Diego, La Jolla, California, United States
  • 3 Oregon State University, Corvallis, Oregon, United States
  • 4 University of Maine, Orono, Maine, United States
  • 5 Sea-Bird Scientific, Bellevue, Nebraska, United States

The final, formatted version of the article will be published soon.

    A novel ocean profiling float system for calibrating and validating satellite-based ocean color observations has been developed and tested. The float-based radiometric sampling system, herein referred to as HyperNav, is complementary to traditional moored in-situ observing systems and provides additional capability due to the relatively small platform size and high radiometric accuracy that allows for opportunistic deployments at locations during seasons and conditions that are best for ocean color observations. The purpose of this study is to optimize the deployment locations of an array of HyperNav systems to support the Plankton, Aerosol, Cloud, ocean Ecosystem (PACE) mission by performing System Vicarious Calibration (SVC) observations. Specifically, we present the development of logistical and scientific criteria for selecting suitable sites for developing an SVC network of profiling-float-based radiometric systems capable of calibrating and validating ocean color observations. As part of the analyses described in this paper, we have synthetically deployed HyperNav at potential US-based and international sites, including: north of Crete island; south-east of Bermuda island; south of Puerto Rico island; southwest of Port Hueneme, CA; west of Monterey, CA; west of Kona, HI; and south-west of Tahiti island. The synthetic analyses identified Kona, Puerto Rico, Crete, and Tahiti as promising SVC sites. All sites considered are suitable for generating a significant number of validation match-ups. Optimally deploying HyperNav systems at these sites during the upcoming PACE SVC campaign is expected to cost-effectively provide a large number of SVC match-ups to fulfill the PACE calibration requirements.

    Keywords: Vicarious calibration, Ocean Color, upper-ocean, Sampling, profiling floats Frontiers

    Received: 06 Nov 2023; Accepted: 18 Jun 2024.

    Copyright: © 2024 Chamberlain, Frouin, Tan, Mazloff, Barnard, Boss, Haëntjens and Orrico. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

    * Correspondence: Paul Chamberlain, University of California, San Diego, La Jolla, United States

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