{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,12]],"date-time":"2026-03-12T04:40:16Z","timestamp":1773290416468,"version":"3.50.1"},"reference-count":62,"publisher":"MDPI AG","issue":"23","license":[{"start":{"date-parts":[[2024,11,29]],"date-time":"2024-11-29T00:00:00Z","timestamp":1732838400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"JPSS program"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Remote Sensing"],"abstract":"<jats:p>The Ozone Mapping and Profiler Suites (OMPS) Nadir Mapper (NM) is a grating spectrometer within the OMPS nadir instruments onboard the SNPP, NOAA-20, and NOAA-21 satellites. It is designed to measure Earth radiance and solar irradiance spectra in wavelengths from 300 nm to 380 nm for operational retrievals of the nadir total column ozone. This study presents calibration and validation analysis results for the NOAA-21 OMPS NM SDR data to meet the JPSS scientific requirements. The NOAA-21 OMPS SDR calibration derives updates of several previous OMPS algorithms, including the dark current correction algorithm, one-time wavelength registration from ground to on-orbit, daily intra-orbit wavelength shift correction, and stray light correction. Additionally, this study derives an empirical scale factor to remove 2.2% of systematic biases in solar flux data, which were caused by pre-launch solar calibration errors of the OMPS nadir instruments. The validation of the NOAA-21 OMPS SDR data is conducted using various methods. For example, the 32-day average method and radiative transfer model are employed to estimate inter-sensor radiometric calibration differences from either the SNPP or NOAA-20 data. The quality of the NOAA-21 OMPS NM SDR data is largely consistent with that of the SNPP and NOAA-20 OMPS data, with differences generally within \u00b12%. This meets the scientific requirements, except for some deviations mainly in the dichroic range between 300 nm and 303 nm. The deep convective cloud target approach is used to monitor the stability of NOAA-21 OMPS reflectance above 330 nm, showing a variation of 0.5% over the observed period. Data from the NOAA-21 VIIRS M1 band are used to estimate OMPS NM data geolocation errors, revealing that along-track errors can reach up to 3 km, while cross-track errors are generally within \u00b11 km.<\/jats:p>","DOI":"10.3390\/rs16234488","type":"journal-article","created":{"date-parts":[[2024,12,2]],"date-time":"2024-12-02T03:50:57Z","timestamp":1733111457000},"page":"4488","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Calibration and Validation of NOAA-21 Ozone Mapping and Profiler Suite (OMPS) Nadir Mapper Sensor Data Record Data"],"prefix":"10.3390","volume":"16","author":[{"given":"Banghua","family":"Yan","sequence":"first","affiliation":[{"name":"NOAA Center for Satellite Applications & Research, College Park, MD 20740, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Trevor","family":"Beck","sequence":"additional","affiliation":[{"name":"NOAA Center for Satellite Applications & Research, College Park, MD 20740, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Junye","family":"Chen","sequence":"additional","affiliation":[{"name":"ERT, Inc., 14401 Sweitzer Lane Suite 300, Laurel, MD 20707, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Steven","family":"Buckner","sequence":"additional","affiliation":[{"name":"ERT, Inc., 14401 Sweitzer Lane Suite 300, Laurel, MD 20707, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Xin","family":"Jin","sequence":"additional","affiliation":[{"name":"ERT, Inc., 14401 Sweitzer Lane Suite 300, Laurel, MD 20707, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ding","family":"Liang","sequence":"additional","affiliation":[{"name":"ERT, Inc., 14401 Sweitzer Lane Suite 300, Laurel, MD 20707, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sirish","family":"Uprety","sequence":"additional","affiliation":[{"name":"ESSIC\/CISESS, University of Maryland, College Park, MD 20740, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jingfeng","family":"Huang","sequence":"additional","affiliation":[{"name":"Science Systems and Applications, Inc., Lanham, MD 20706, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Lawrence E.","family":"Flynn","sequence":"additional","affiliation":[{"name":"NOAA Center for Satellite Applications & Research, College Park, MD 20740, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5646-9746","authenticated-orcid":false,"given":"Likun","family":"Wang","sequence":"additional","affiliation":[{"name":"ESSIC\/CISESS, University of Maryland, College Park, MD 20740, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3616-351X","authenticated-orcid":false,"given":"Quanhua","family":"Liu","sequence":"additional","affiliation":[{"name":"NOAA Center for Satellite Applications & Research, College Park, MD 20740, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Warren D.","family":"Porter","sequence":"additional","affiliation":[{"name":"ERT, Inc., 14401 Sweitzer Lane Suite 300, Laurel, MD 20707, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2024,11,29]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Dittman, M.G., Ramberg, E., Chrisp, M., Rodriguez, J.V., Sparks, A.L., Zaun, N.H., Hendershot, P., Dixon, T., Philbrick, R.H., and Wasinger, D. 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