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Description

The OMI/Aura Sulphur Dioxide (SO2) Total Column 1-orbit L2 Swath 13x24 km (OMSO2) data product has been updated with a principal component analysis (PCA)-based algorithm (v2) with new SO2 Jacobian lookup tables and a priori profiles that significantly improve retrievals for anthropogenic SO2. The data files (or granules) contain different estimates of the vertical column density (VCD) of SO2 depending on the users investigating anthropogenic or volcanic sources. Files also contain quality flags, geolocation and other ancillary information. The lead scientist for the OMSO2 product is Can Li.

The OMSO2 files are stored in the version 5 EOS Hierarchical Data Format (HDF-EOS5). Each file contains data from the daylit half of an orbit (~53 minutes). There are approximately 14 orbits per day. The resolution of the data is 13x24 km2 at nadir, with a swath width of 2600 km and 60 pixels per scan line every 2 seconds.

Product Summary

Platforms
Aura
Instruments
OMI
Projects
Aura
Spatial Extent

N: 90 S: -90 E: 180 W: -180

Spatial Resolution
24 Kilometers x 13 Kilometers
Location
GLOBAL
Coordinate System
CARTESIAN
Granule Spatial Representation
GEODETIC
Temporal Extent
2004-10-01 to Present
Data Partner
Goddard Earth Sciences Data and Information Services Center (formerly Goddard DAAC), Terrestrial Information Systems Laboratory, Earth Sciences Division, Science and Exploration Directorate, Goddard Space Flight Center, NASA (NASA/GSFC/SED/ESD/TISL/GESDI
Concept ID
C3454342607-GES_DISC
Data State
ACTIVE
Number of Files/Granules
111811
Processing Level
2
Published
Updated
Science Keywords
Sulfur Dioxide

Citation

Citation is critically important for dataset documentation and discovery. This dataset is openly shared, without restriction, in accordance with the EOSDIS Data Use and Citation Guidance.

Copy Citation

Krotkov, N. A., & Li, C. (2025). OMI/Aura Sulphur Dioxide (SO2) Total Column 1-orbit L2 Swath 13x24 km [Dataset]. NASA Goddard Earth Sciences Data and Information Services Center. https://doi.org/10.5067/AURA/OMI/DATA2422 Date Accessed: 2026-06-10

Documents

Publications Citing This Dataset

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Title Year Author Topic
Using remote sensing data to monitor volcanic activity: Mount Etna case study Bondur, Valery Sulfur Dioxide
Validation of OMI, GOME-2A and GOME-2B tropospheric NO2, SO2 and HCHO products using MAX-DOAS observations from 2011 to 2014 in Wuxi, China ... Wang, Yang, Beirle, Steffen, Lampel, Johannes, Koukouli, Mariliza, De Smedt, Isabelle, Theys, Nicolas, Li, Ang, Wu, Dexia, Xie, Pinhua, Liu, Cheng, Van Roozendael, Michel, Stavrakou, Trissevgeni, Muller, Jean-Francois, Wagner, Thomas Cloud Fraction, Cloud Top Pressure, Sulfur Dioxide, Carbon And Hydrocarbon Compounds
Triggering of volcanic degassing by large earthquakes Avouris, Dulcinea M., Carn, Simon A., Waite, Gregory P. Sulfur Dioxide
A multidisciplinary study of the final episode of the Manda Hararo dyke sequence, Ethiopia, and implications for trends in volcanism during the rifting cycle Barnie, T. D., Keir, D., Hamling, I., Hofmann, B., Belachew, M., Carn, S., Eastwell, D., Hammond, J. O. S., Ayele, A., Oppenheimer, C., Wright, T. Sulfur Dioxide
Benefits of China's efforts in gaseous pollutant control indicated by the bottom-up emissions and satellite observations 20002014 Xia, Yinmin, Zhao, Yu, Nielsen, Chris P. Sulfur Dioxide
MAX-DOAS measurements and satellite validation of tropospheric NO2 and SO2 vertical column densities at a rural site of North China Jin, Junli, Ma, Jianzhong, Lin, Weili, Zhao, Huarong, Shaiganfar, Reza, Beirle, Steffen, Wagner, Thomas Nitrogen Dioxide, Sulfur Dioxide, Nitrogen Dioxide
Long-range transport of SO2 from continental Asia to northeast Asia and the northwest Pacific ocean: flow rate estimation using OMI data, surface in situ data, and the ... Park, Junsung, Ryu, Jaeyong, Kim, Daewon, Yeo, Jaeho, Lee, Hanlim Sulfur Dioxide
Improving global detection of volcanic eruptions using the Ozone Monitoring Instrument (OMI) Flower, Verity J. B., Oommen, Thomas, Carn, Simon A. Sulfur Dioxide
Enhanced carbon export to the abyssal depths driven by atmosphere PedrosaPamies, R., SanchezVidal, A., Canals, M., Lampadariou, N., Velaoras, D., Gogou, A., Parinos, C., Calafat, A. Sulfur Dioxide
Seasonal variation of tropospheric bromine monoxide over the Rann of Kutch salt marsh seen from space Hormann, Christoph, Sihler, Holger, Beirle, Steffen, Penning de Vries, Marloes, Platt, Ulrich, Wagner, Thomas Cloud Fraction, Cloud Top Pressure, Sulfur Dioxide, Chlorine Dioxide, Carbon And Hydrocarbon Compounds, Bromine Monoxide
Sensitivity of OMI SO2 measurements to variable eruptive behaviour at Soufriere Hills Volcano, Montserrat Hayer, C.S., Wadge, G., Edmonds, M., Christopher, T. Sulfur Dioxide
The impact of satellite sensor viewing geometry on time-series analysis of volcanic emissions Flower, Verity J.B., Carn, Simon A., Wright, Robert Sulfur Dioxide
Synergistic use of Lagrangian dispersion and radiative transfer modelling with satellite and surface remote sensing measurements for the investigation of volcanic ... Sellitto, Pasquale, di Sarra, Alcide, Corradini, Stefano, Boichu, Marie, Herbin, Herve, Dubuisson, Philippe, Seze, Genevieve, Meloni, Daniela, Monteleone, Francesco, Merucci, Luca, Rusalem, Justin, Salerno, Giuseppe, Briole, Pierre, Legras, Bernard Sulfur Dioxide
A case study of formation and maintenance of a lower stratospheric cirrus cloud over the tropics Sandhya, M., Sridharan, S., Indira Devi, M., Niranjan, K., Jayaraman, A. Sulfur Dioxide
A multi-sensor satellite assessment of SO2 emissions from the 201213 eruption of Plosky Tolbachik volcano, Kamchatka Telling, J., Flower, V.J.B., Carn, S.A. Sulfur Dioxide, Dust/Ash/Smoke, Infrared Radiance
Characterising volcanic cycles at Soufriere Hills Volcano, Montserrat: Time series analysis of multi-parameter satellite data Flower, Verity J.B., Carn, Simon A. Sulfur Dioxide
Ten years of satellite observations reveal highly variable sulphur dioxide emissions at Anatahan Volcano, Mariana Islands McCormick, Brendan, Popp, Christoph, Andrews, Benjamin, Cottrell, Elizabeth Sulfur Dioxide
Sulfur dioxide vertical column DOAS retrievals from the Ozone Monitoring Instrument: Global observations and comparison to groundbased and satellite data Theys, N., De Smedt, I., van Gent, J., Danckaert, T., Wang, T., Hendrick, F., Stavrakou, T., Bauduin, S., Clarisse, L., Li, C., Krotkov, N., Yu, H., Brenot, H., Van Roozendael, M. Cloud Fraction, Cloud Top Pressure, Sulfur Dioxide
A comparison of satellite and groundbased measurements of SO2 emissions from Tungurahua volcano, Ecuador McCormick, Brendan T., Herzog, Michael, Yang, Jian, Edmonds, Marie, Mather, Tamsin A., Carn, Simon A., Hidalgo, Silvana, Langmann, Baerbel Sulfur Dioxide
Analysis on effectiveness of SO2 emission reduction in Shanxi, China by satellite remote sensing Song, Huaxiang, Yang, Minhua Sulfur Dioxide
Global dry deposition of nitrogen dioxide and sulfur dioxide inferred from spacebased measurements Nowlan, C. R., Martin, R. V., Philip, S., Lamsal, L. N., Krotkov, N. A., Marais, E. A., Wang, S., Zhang, Q. Cloud Fraction, Cloud Top Pressure, Nitrogen Dioxide, Sulfur Dioxide
New lava lake at Nyamuragira volcano revealed by combined ASTER and OMI SO2 measurements Campion, Robin Sulfur Dioxide
Meteorological influence on predicting surface SO2 concentration from satellite remote sensing in Shanghai, China Xue, Dan, Yin, Jingyuan Sulfur Dioxide
SO2 noontime-peak phenomenon in the North China Plain Xu, W. Y., Zhao, C. S., Ran, L., Lin, W. L., Yan, P., Xu, X. B. Sulfur Dioxide
The distribution and trends of fog and haze in the North China Plain over the past 30 years Fu, G. Q., Xu, W. Y., Yang, R. F., Li, J. B., Zhao, C. S. Sulfur Dioxide
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