Hyperspectral and polarimetric imaging of the ocean for the characterization of the surface effects and measurement uncertainties
type: CreativeWork
description: Ocean and coastal waters are monitored by Ocean Color satellite sensors to determine concentrations of chlorophyll and water properties and identify areas of algal blooms and other events. The light radiance from the ocean is weak in comparison with the sky radiance, which requires very accurate atmospheric correction of the radiance measured at the top of the atmosphere (TOA) on the satellite and heavy validation of the derived water leaving radiance by field measurements from the ships and ocean platforms. For TOA and especially above water radiance the skylight reflected from the ocean surface represents one of the main sources of measurement uncertainties. NASA’s Plankton, Aerosol, Cloud, and ocean Ecosystem (PACE) mission, successfully launched in February 2024, has the main hyperspectral imager and two polarimeters on board, which requires novel approaches in atmospheric correction, skylight correction, algorithms for retrieval of water optical properties as well as characterization of the surface and related uncertainties in the hyperspectral and polarimetric modes. Polarized light provides important information in multiple environmental applications including the retrieval of parameters of atmospheric aerosols, ocean particulates, and ocean surfaces, information, which is not directly available from the traditional multi- and hyperspectral radiometric measurements. The polarization component is also critical for the accurate determination of the reflectance coefficient from the sea surface, which is widely used in the processing of above-water measurements and atmospheric correction models. In this work, a unique optical system is used to make multi-and hyperspectral measurements above the ocean surface. The system includes a hyperspectral imager, in which each of 410x410 pixels contains hyperspectral information in the 350 -1000 nm range, and a polarimetric camera, which takes videos at 10 frames per second with 2464(H) x 2056(V) resolution, where each of 2…
abstract: Ocean and coastal waters are monitored by Ocean Color satellite sensors to determine concentrations of chlorophyll and water properties and identify areas of algal blooms and other events. The light radiance from the ocean is weak in comparison with the sky radiance, which requires very accurate atmospheric correction of the radiance measured at the top of the atmosphere (TOA) on the satellite and heavy validation of the derived water leaving radiance by field measurements from the ships and ocean platforms. For TOA and especially above water radiance the skylight reflected from the ocean surface represents one of the main sources of measurement uncertainties. NASA’s Plankton, Aerosol, Cloud, and ocean Ecosystem (PACE) mission, successfully launched in February 2024, has the main hyperspectral imager and two polarimeters on board, which requires novel approaches in atmospheric correction, skylight correction, algorithms for retrieval of water optical properties as well as characterization of the surface and related uncertainties in the hyperspectral and polarimetric modes. Polarized light provides important information in multiple environmental applications including the retrieval of parameters of atmospheric aerosols, ocean particulates, and ocean surfaces, information, which is not directly available from the traditional multi- and hyperspectral radiometric measurements. The polarization component is also critical for the accurate determination of the reflectance coefficient from the sea surface, which is widely used in the processing of above-water measurements and atmospheric correction models. In this work, a unique optical system is used to make multi-and hyperspectral measurements above the ocean surface. The system includes a hyperspectral imager, in which each of 410x410 pixels contains hyperspectral information in the 350 -1000 nm range, and a polarimetric camera, which takes videos at 10 frames per second with 2464(H) x 2056(V) resolution, where each of 2…
author: Malinowski, Mateusz
keywords: hyperspectral, polarimetric, imaging, ocean, surface, uncertainties, Electromagnetics and Photonics, Optics, Other Oceanography and Atmospheric Sciences and Meteorology
date published: 2024-01-01T08:00:00Z
date modified: 2026-07-24T01:58:13Z
provider: City University of New York - City College
publisher: Networked Digital Library of Theses and Dissertations
type: WebPage
source organization: City University of New York - City College