{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,28]],"date-time":"2026-02-28T14:17:44Z","timestamp":1772288264735,"version":"3.50.1"},"reference-count":37,"publisher":"MDPI AG","issue":"4","license":[{"start":{"date-parts":[[2023,2,9]],"date-time":"2023-02-09T00:00:00Z","timestamp":1675900800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Aerospace Science and Technology Innovation Application Research Project","award":["E23Y0H555S1"],"award-info":[{"award-number":["E23Y0H555S1"]}]},{"name":"Aerospace Science and Technology Innovation Application Research Project","award":["30-Y20A010-9007-17\/18"],"award-info":[{"award-number":["30-Y20A010-9007-17\/18"]}]},{"name":"Aerospace Science and Technology Innovation Application Research Project","award":["E13Y0J31601"],"award-info":[{"award-number":["E13Y0J31601"]}]},{"name":"China High-resolution Earth Observation System (CHEOS)","award":["E23Y0H555S1"],"award-info":[{"award-number":["E23Y0H555S1"]}]},{"name":"China High-resolution Earth Observation System (CHEOS)","award":["30-Y20A010-9007-17\/18"],"award-info":[{"award-number":["30-Y20A010-9007-17\/18"]}]},{"name":"China High-resolution Earth Observation System (CHEOS)","award":["E13Y0J31601"],"award-info":[{"award-number":["E13Y0J31601"]}]},{"name":"China Center for Resource Satellite Data and Applications Project","award":["E23Y0H555S1"],"award-info":[{"award-number":["E23Y0H555S1"]}]},{"name":"China Center for Resource Satellite Data and Applications Project","award":["30-Y20A010-9007-17\/18"],"award-info":[{"award-number":["30-Y20A010-9007-17\/18"]}]},{"name":"China Center for Resource Satellite Data and Applications Project","award":["E13Y0J31601"],"award-info":[{"award-number":["E13Y0J31601"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Remote Sensing"],"abstract":"<jats:p>Aerosol vertical distribution is decisive and hard to be constrained. It is of great significance for the study of atmospheric climate and environment. Oxygen absorption A-bands (755\u2013775 nm) provide a unique opportunity to acquire vertical aerosol profiles from satellites over a large spatial coverage. To investigate the ability of O2 A-bands in retrieving aerosol vertical distribution, the dependence of retrieval on satellite observation geometry, spectral resolution, signal-to-noise ratio (SNR), size distribution, and a priori knowledge is quantified using information content theory. This work uses the radiative transfer model UNL to simulate four aerosol modes and the instrument noise model. The simulations show that a small scattering angle leads to an increase in the total amount of observed aerosol profile information, with the degrees freedom of signal (DFS) of a single band increasing from 0.4 to 0.85 at high spectral resolution (0.01 nm). The total DFS value of O2 A-bands varies accordingly between 1.2\u20132.3 to 3.8\u20135.1 when the spectral resolution increases from 1 nm to 0.01 nm. The spectral resolution has a greater impact on DFS value than the impact from SNR (an improvement of roughly 41\u201353% resulted from the change in spectral resolution and the SNR led to 13\u201318%). The retrieval is more sensitive to aerosols with a coarse-dominated mode. The improvement in spectral resolution on information acquisition is demonstrated using the DFS and the posterior error at various previous errors and resolutions.<\/jats:p>","DOI":"10.3390\/rs15040948","type":"journal-article","created":{"date-parts":[[2023,2,9]],"date-time":"2023-02-09T02:55:54Z","timestamp":1675911354000},"page":"948","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":9,"title":["Study on Influencing Factors of the Information Content of Satellite Remote-Sensing Aerosol Vertical Profiles Using Oxygen A-Band"],"prefix":"10.3390","volume":"15","author":[{"given":"Yuxuan","family":"Wang","sequence":"first","affiliation":[{"name":"Key Laboratory of General Optical Calibration and Characterization Technology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China"},{"name":"Science Island Branch of Graduate School, University of Science and Technology of China, Hefei 230026, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Xiaobing","family":"Sun","sequence":"additional","affiliation":[{"name":"Key Laboratory of General Optical Calibration and Characterization Technology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China"},{"name":"Chief Studio of Agricultural Industry in Hefei, Hefei 230031, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Honglian","family":"Huang","sequence":"additional","affiliation":[{"name":"Key Laboratory of General Optical Calibration and Characterization Technology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China"},{"name":"Chief Studio of Agricultural Industry in Hefei, Hefei 230031, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Rufang","family":"Ti","sequence":"additional","affiliation":[{"name":"Key Laboratory of General Optical Calibration and Characterization Technology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Xiao","family":"Liu","sequence":"additional","affiliation":[{"name":"Key Laboratory of General Optical Calibration and Characterization Technology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China"},{"name":"Chief Studio of Agricultural Industry in Hefei, Hefei 230031, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yizhe","family":"Fan","sequence":"additional","affiliation":[{"name":"Key Laboratory of General Optical Calibration and Characterization Technology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China"},{"name":"Science Island Branch of Graduate School, University of Science and Technology of China, Hefei 230026, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2023,2,9]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"13545","DOI":"10.1021\/acs.est.7b04417","article-title":"Aerosol Health Effects from Molecular to Global Scales","volume":"51","author":"Shiraiwa","year":"2017","journal-title":"Environ. 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