{"title":"Differences in the Ocean Color Atmospheric Correction Algorithms for Remote Sensing Reflectance Retrievals for Different Atmospheric Conditions","authors":"","doi":"10.1134/s0010952523700697","DOIUrl":null,"url":null,"abstract":"<span> <h3>Abstract</h3> <p>This work is devoted to estimating the spectral course of validation error of satellite and in situ measurements of remote sensing reflectance for various atmospheric conditions. During data validation, a number of systematic errors of standard algorithms were noted, for example, negative values of remote sensing reflectance in the short-wavelength region at 412 and 443 nm in the presence of dust in the atmosphere. It is shown that the modern approach to determining aerosol light scattering in the short-wavelength part of the visible range by extrapolating the signal from the near-IR region is not sufficiently correct from a physical point of view, and similar solutions by the interpolation method have more accurate estimates. The obtained results show that in the presence of an absorbing aerosol, the spectral law of atmospheric correction errors is close to the function λ<sup>–4</sup>. This effect is explained by the fact that dust aerosol is determined by remote sensing methods using the Gordon and Wang algorithms using the infrared channel, but arid aerosol has the main effect on the ratio of the aerosol and molecular components (shortwave range). This paper presents trends for further interpolation of satellite data not only under the condition of a clean atmosphere, but also in the presence of an absorbing aerosol. Experimental patterns of validation error for <em>Aqua</em> MODIS have been obtained.</p> </span>","PeriodicalId":56319,"journal":{"name":"Cosmic Research","volume":null,"pages":null},"PeriodicalIF":0.6000,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Cosmic Research","FirstCategoryId":"101","ListUrlMain":"https://doi.org/10.1134/s0010952523700697","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"ASTRONOMY & ASTROPHYSICS","Score":null,"Total":0}
引用次数: 0
Abstract
This work is devoted to estimating the spectral course of validation error of satellite and in situ measurements of remote sensing reflectance for various atmospheric conditions. During data validation, a number of systematic errors of standard algorithms were noted, for example, negative values of remote sensing reflectance in the short-wavelength region at 412 and 443 nm in the presence of dust in the atmosphere. It is shown that the modern approach to determining aerosol light scattering in the short-wavelength part of the visible range by extrapolating the signal from the near-IR region is not sufficiently correct from a physical point of view, and similar solutions by the interpolation method have more accurate estimates. The obtained results show that in the presence of an absorbing aerosol, the spectral law of atmospheric correction errors is close to the function λ–4. This effect is explained by the fact that dust aerosol is determined by remote sensing methods using the Gordon and Wang algorithms using the infrared channel, but arid aerosol has the main effect on the ratio of the aerosol and molecular components (shortwave range). This paper presents trends for further interpolation of satellite data not only under the condition of a clean atmosphere, but also in the presence of an absorbing aerosol. Experimental patterns of validation error for Aqua MODIS have been obtained.
摘要 这项工作致力于估算各种大气条件下卫星和原地测量遥感反射率验证误差的光谱过程。在数据验证过程中，发现了一些标准算法的系统误差，例如，在大气中存在尘埃的情况下，412 和 443 nm 短波区域的遥感反射率为负值。研究表明，通过外推近红外区域的信号来确定可见光范围短波长部分气溶胶光散射的现代方法，从物理角度来看不够正确，而通过内插法得出的类似解决方案具有更准确的估计值。所得结果表明，在存在吸收气溶胶的情况下，大气校正误差的光谱规律接近于函数 λ-4。这种影响的原因是，尘埃气溶胶是通过使用红外通道的戈登和王算法的遥感方法确定的，但干旱气溶胶对气溶胶和分子成分（短波范围）的比率有主要影响。本文介绍了不仅在清洁大气条件下，而且在存在吸收性气溶胶的情况下进一步对卫星数据进行插值的趋势。已获得 Aqua MODIS 验证误差的实验模式。
期刊介绍：
Cosmic Research publishes scientific papers covering all subjects of space science and technology, including the following: ballistics, flight dynamics of the Earth’s artificial satellites and automatic interplanetary stations; problems of transatmospheric descent; design and structure of spacecraft and scientific research instrumentation; life support systems and radiation safety of manned spacecrafts; exploration of the Earth from Space; exploration of near space; exploration of the Sun, planets, secondary planets, and interplanetary medium; exploration of stars, nebulae, interstellar medium, galaxies, and quasars from spacecraft; and various astrophysical problems related to space exploration. A chronicle of scientific events and other notices concerning the main topics of the journal are also presented.
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