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Uncertainties in Retrieval of Remote...

Herrera Estrella, Eder Ivan.

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Uncertainties in Retrieval of Remote Sensing Reflectance From Ocean Color Satellite Observations.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Uncertainties in Retrieval of Remote Sensing Reflectance From Ocean Color Satellite Observations./
作者:	Herrera Estrella, Eder Ivan.
出版者:	Ann Arbor : ProQuest Dissertations & Theses, : 2023,
面頁冊數:	143 p.
附註:	Source: Dissertations Abstracts International, Volume: 85-03, Section: B.
Contained By:	Dissertations Abstracts International85-03B.
標題:	Optics. -
電子資源:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=30636109
ISBN:	9798380166393

Uncertainties in Retrieval of Remote Sensing Reflectance From Ocean Color Satellite Observations.
Herrera Estrella, Eder Ivan.

Uncertainties in Retrieval of Remote Sensing Reflectance From Ocean Color Satellite Observations. - Ann Arbor : ProQuest Dissertations & Theses, 2023 - 143 p.

Source: Dissertations Abstracts International, Volume: 85-03, Section: B.

Thesis (Ph.D.)--City University of New York, 2023.

Ocean Color radiometry uses remote sensing to interpret ocean dynamics by retrieving remote sensing reflectance (\uD835\uDC45\uD835\uDC5F\uD835\uDC60) from satellite imagery at different scales and over different time periods. \uD835\uDC45\uD835\uDC5F\uD835\uDC60 spectrum characterizes the ocean color that we observe, and from which we can discern concentrations of chlorophyll, organic and inorganic particles, and carbon fluxes in the ocean and atmosphere. \uD835\uDC45\uD835\uDC5F\uD835\uDC60 is derived from the total radiance at the top of the atmosphere (TOA). However, it only represents up to ten percent of the total signal. Hence, the retrieval of \uD835\uDC45\uD835\uDC5F\uD835\uDC60 from the total radiance at TOA involves the application of atmospheric correction (AC) algorithms, which include accurate modeling of Rayleigh and aerosol scattering, glint, and water variability. Each of these components yields uncertainties in the retrieved value of \uD835\uDC45\uD835\uDC5F\uD835\uDC60, especially in the blue bands. It is important to understand the main sources of uncertainties in \uD835\uDC45\uD835\uDC5F\uD835\uDC60, as uncertainties propagate into the retrieval of water parameters, which in turn inform climate models. In this study, a model was developed that quantifies the uncertainties of the main components in the current AC algorithm and used to analyze holistically the influence of these components on the \uD835\uDC45\uD835\uDC5F\uD835\uDC60 uncertainties spatially and temporally in different water types taking advantage of the spectral differences between the components. The uncertainties were determined by comparing satellite and in situ data, with the in situ data obtained from the AErosol RObotic NETwork - Ocean Color (AERONET-OC) around the Northern Hemisphere and the Marine Optical BuoY (MOBY), Lanai, Hawaii. The satellite sensor data are from the Visible Infrared Imaging Radiometer Suite (VIIRS) on the S-NPP platform, the Ocean and Land Colour Instruments (OLCI) on Sentinel 3A and 3B, and the Operational Land Imager (OLI) on Landsat 8.Results showed that the Rayleigh component (molecular scattering and surface effects) is the main source of \uD835\uDC45\uD835\uDC5F\uD835\uDC60 uncertainties for all water types, followed by water variability, which is more influential in coastal areas. The contributions of other components, including aerosol scattering, are usually smaller. In addition, wind speed ranges can influence results, especially in coastal regions. Across spatial scales, water variability played a dominant role in \uD835\uDC45\uD835\uDC5F\uD835\uDC60 uncertainty and increased proportionally to the ground sampling distance.

ISBN: 9798380166393Subjects--Topical Terms:

517925
Optics.
Subjects--Index Terms:

Atmospheric correction

Uncertainties in Retrieval of Remote Sensing Reflectance From Ocean Color Satellite Observations.
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520 $a Ocean Color radiometry uses remote sensing to interpret ocean dynamics by retrieving remote sensing reflectance (\uD835\uDC45\uD835\uDC5F\uD835\uDC60) from satellite imagery at different scales and over different time periods. \uD835\uDC45\uD835\uDC5F\uD835\uDC60 spectrum characterizes the ocean color that we observe, and from which we can discern concentrations of chlorophyll, organic and inorganic particles, and carbon fluxes in the ocean and atmosphere. \uD835\uDC45\uD835\uDC5F\uD835\uDC60 is derived from the total radiance at the top of the atmosphere (TOA). However, it only represents up to ten percent of the total signal. Hence, the retrieval of \uD835\uDC45\uD835\uDC5F\uD835\uDC60 from the total radiance at TOA involves the application of atmospheric correction (AC) algorithms, which include accurate modeling of Rayleigh and aerosol scattering, glint, and water variability. Each of these components yields uncertainties in the retrieved value of \uD835\uDC45\uD835\uDC5F\uD835\uDC60, especially in the blue bands. It is important to understand the main sources of uncertainties in \uD835\uDC45\uD835\uDC5F\uD835\uDC60, as uncertainties propagate into the retrieval of water parameters, which in turn inform climate models. In this study, a model was developed that quantifies the uncertainties of the main components in the current AC algorithm and used to analyze holistically the influence of these components on the \uD835\uDC45\uD835\uDC5F\uD835\uDC60 uncertainties spatially and temporally in different water types taking advantage of the spectral differences between the components. The uncertainties were determined by comparing satellite and in situ data, with the in situ data obtained from the AErosol RObotic NETwork - Ocean Color (AERONET-OC) around the Northern Hemisphere and the Marine Optical BuoY (MOBY), Lanai, Hawaii. The satellite sensor data are from the Visible Infrared Imaging Radiometer Suite (VIIRS) on the S-NPP platform, the Ocean and Land Colour Instruments (OLCI) on Sentinel 3A and 3B, and the Operational Land Imager (OLI) on Landsat 8.Results showed that the Rayleigh component (molecular scattering and surface effects) is the main source of \uD835\uDC45\uD835\uDC5F\uD835\uDC60 uncertainties for all water types, followed by water variability, which is more influential in coastal areas. The contributions of other components, including aerosol scattering, are usually smaller. In addition, wind speed ranges can influence results, especially in coastal regions. Across spatial scales, water variability played a dominant role in \uD835\uDC45\uD835\uDC5F\uD835\uDC60 uncertainty and increased proportionally to the ground sampling distance.
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