{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,10]],"date-time":"2026-04-10T03:14:58Z","timestamp":1775790898615,"version":"3.50.1"},"reference-count":16,"publisher":"MDPI AG","issue":"3","license":[{"start":{"date-parts":[[2018,3,5]],"date-time":"2018-03-05T00:00:00Z","timestamp":1520208000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Remote Sensing"],"abstract":"<jats:p>The instrument Spectral Response Function (ISRF) has a strong impact on spectral calibration and the atmospheric trace gases retrievals. An accurate knowledge or a fine characterization of the ISRF shape and its FWHM (Full width at half maximum) as well as its temporal behavior is therefore crucial. Designing a strategy for the characterization of the ISRF both on ground and in-flight is critical for future missions, such as the spectral imagers in the Copernicus program. We developed an algorithm to retrieve the instrument ISRF in-flight. Our method uses solar measurements taken in-flight by the instrument to fit a parameterized ISRF from on ground based calibration, and then retrieves the shape and FWHM of the actual in-flight ISRF. With such a strategy, one would be able to derive and monitor the ISRF during the commissioning and operation of spectrometer imager missions. We applied our method to retrieve the SCIAMACHY instrument ISRF in its different channels. We compared the retrieved ones with the on ground estimated ones. Besides some peculiarities found in SCIAMACHY channel 8, the ISRF results in other channels were relatively consistent and stable over time in most cases.<\/jats:p>","DOI":"10.3390\/rs10030401","type":"journal-article","created":{"date-parts":[[2018,3,6]],"date-time":"2018-03-06T07:37:25Z","timestamp":1520321845000},"page":"401","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":14,"title":["In-Flight Retrieval of SCIAMACHY Instrument Spectral Response Function"],"prefix":"10.3390","volume":"10","author":[{"given":"Mourad","family":"Hamidouche","sequence":"first","affiliation":[{"name":"Remote Sensing Technology Institute, German Aerospace Center (DLR), Oberpfaffenhofen, 82234 Wessling, Germany"}]},{"given":"G\u00fcnter","family":"Lichtenberg","sequence":"additional","affiliation":[{"name":"Remote Sensing Technology Institute, German Aerospace Center (DLR), Oberpfaffenhofen, 82234 Wessling, Germany"}]}],"member":"1968","published-online":{"date-parts":[[2018,3,5]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"1319","DOI":"10.5194\/amt-5-1319-2012","article-title":"Quantification and mitigation of the impact of scene inhomogeneity on Sentinel-4 UVN UV-VIS retrievals","volume":"5","author":"Bramstedt","year":"2012","journal-title":"Atmos. Meas. Tech."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"2933","DOI":"10.5194\/amt-5-2933-2012","article-title":"Improved retrieval of global tropospheric formaldehyde columns from GOME-2\/MetOp-A addressing noise reduction and instrumental degradation issues","volume":"5","author":"Stavrakou","year":"2012","journal-title":"Atmos. Meas. Tech."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"385","DOI":"10.5194\/amt-8-385-2015","article-title":"Tropospheric ozone and ozone profiles retrieved from GOME-2 and their validation","volume":"8","author":"Miles","year":"2015","journal-title":"Atmos. Meas. Tech."},{"key":"ref_4","doi-asserted-by":"crossref","unstructured":"Shah, S., Tuinder, O., van Peet, J., de Laat, A., and Stammes, P. (2017). Nadir ozone profile retrieval from SCIAMACHY and its application to the Antarctic ozone hole in the period 2003\u20132011. Atmos. Meas. Tech. Discuss.","DOI":"10.5194\/amt-2017-136"},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"127","DOI":"10.1175\/1520-0469(1999)056<0127:SMOAMM>2.0.CO;2","article-title":"SCIAMACHY: Mission Objectives and Measurement Modes","volume":"56","author":"Bovensmann","year":"1999","journal-title":"J. Atmos. Sci."},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"5347","DOI":"10.5194\/acp-6-5347-2006","article-title":"SCIAMACHY Level 1 data: calibration concept and in-flight calibration","volume":"6","author":"Lichtenberg","year":"2006","journal-title":"ACP"},{"key":"ref_7","doi-asserted-by":"crossref","unstructured":"Gottwald, M., and Bovensmann, H. (2011). SCIAMACHY In-Orbit Mission Report. SCIAMACHY Exploring the Changing Earth\u2019s Atmosphere, Springer.","DOI":"10.1007\/978-90-481-9896-2"},{"key":"ref_8","unstructured":"Ahlers, B., Schrijvers, C., and Boslooper, E. (2004). Slit Function Comparisons with Level 0 Data. TPD Space Instrumentation SCIAMACHY TN-014, TNO."},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"3677","DOI":"10.5194\/amt-10-3677-2017","article-title":"Deriving the slit functions from OMI solar observations and its implications for ozone-profile retrieval","volume":"10","author":"Sun","year":"2017","journal-title":"Atmos. Meas. Tech."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"939","DOI":"10.5194\/amt-10-939-2017","article-title":"Characterization of the OCO-2 instrument line shape functions using on-orbit solar measurements","volume":"10","author":"Sun","year":"2017","journal-title":"Atmos. Meas. Tech."},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"1289","DOI":"10.1016\/j.jqsrt.2010.01.036","article-title":"An improved high-resolution solar reference spectrum for earth\u2019s atmosphere measurements in the ultraviolet, visible, and near infrared","volume":"111","author":"Chance","year":"2010","journal-title":"JQSRT"},{"key":"ref_12","doi-asserted-by":"crossref","unstructured":"Wallace, L., Livingston, W., Hinkle, K., and Bernath, P. (1996). Infrared Spectral Atlases of the Sun from NOAO. ApJS, 106.","DOI":"10.1086\/192333"},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"581","DOI":"10.5194\/amt-10-581-2017","article-title":"Parameterizing the instrumental spectral response function and its changes by a super-Gaussian and its derivatives","volume":"10","author":"Beirle","year":"2017","journal-title":"Atmos. Meas. Tech."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"30","DOI":"10.1016\/j.infrared.2006.08.001","article-title":"In-flight proton-induced radiation damage to SCIAMACHY\u2019s extended-wavelength InGaAs near-infrared detectors","volume":"50","author":"Kleipool","year":"2007","journal-title":"Infrared Phys. Technol."},{"key":"ref_15","unstructured":"Gottwald, M., Krieg, E., Lichtenberg, G., No\u00ebl, S., Bramstedt, K., Bovensmann, H., Snel, R., and Krijger, M. (2016). SCIAMACHY In-Orbit Operations and Performance, Springer. Available online: https:\/\/atmos.eoc.dlr.de\/projects\/scops\/."},{"key":"ref_16","unstructured":"Lichtenberg, G. (2003). Some Results on Ice and the IR Transmission in SCIAMACHY, SRON. SRON-EOS\/RP\/03-003."}],"container-title":["Remote Sensing"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/2072-4292\/10\/3\/401\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T14:57:35Z","timestamp":1760194655000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/2072-4292\/10\/3\/401"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2018,3,5]]},"references-count":16,"journal-issue":{"issue":"3","published-online":{"date-parts":[[2018,3]]}},"alternative-id":["rs10030401"],"URL":"https:\/\/doi.org\/10.3390\/rs10030401","relation":{},"ISSN":["2072-4292"],"issn-type":[{"value":"2072-4292","type":"electronic"}],"subject":[],"published":{"date-parts":[[2018,3,5]]}}}