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Description

The OMI science team produces this Level-3 Aura/OMI Global OMSO2e Data Products (0.25 degree Latitude/Longitude grids). In this Level-3 daily global SO2 data product, each grid contains only one observation of Total Column Density of SO2 from the GEOS-5 profile, based on an improved Principal Component Analysis (PCA) Algorithm. This single observation is the "best pixel", selected from all "good" L2 pixels of OMSO2 that overlap this grid and have UTC time between UTC times of 00:00:00 and 23:59:59.999. In addition to the SO2 Vertical column value some ancillary parameters, e.g., cloud fraction, terrain height, scene number, solar and satellite viewing angles, row anomaly flags, and quality flags have been also made available corresponding to the best selected SO2 data pixel in each grid.

The OMSO2e files are stored in the version 5 EOS Hierarchical Data Format (HDF-EOS5) using the grid model.

Product Summary

Platforms
Aura
Instruments
OMI
Projects
Aura
Spatial Extent

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

Location
GLOBAL
Coordinate System
CARTESIAN
Granule Spatial Representation
CARTESIAN
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
C3756242136-GES_DISC
Data State
ACTIVE
Number of Files/Granules
7958
Processing Level
3
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., & Leonard, P. (2025). OMI/Aura Sulfur Dioxide (SO2) Total Column Daily L3 1 Day Best Pixel in 0.25 degree x 0.25 degree [Dataset]. NASA Goddard Earth Sciences Data and Information Services Center. https://doi.org/10.5067/AURA/OMI/DATA3408 Date Accessed: 2026-08-23

Documents

Publications Citing This Dataset

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Title Year Author Topic
Incorporation of volcanic SO2 emissions in the Hemispheric CMAQ (H-CMAQ) version 5.2 modeling system and assessing their impacts on sulfate aerosol ... Itahashi, Syuichi, Mathur, Rohit, Hogrefe, Christian, Napelenok, Sergey L., Zhang, Yang Sulfur Dioxide
Impact of COVID-19 Control Measures on Trace Gases (NO2, HCHO and SO2) and Aerosols over India during Pre-monsoon of 2020 Biswas, Mriganka Sekhar, Ayantika, D.C. Carbon And Hydrocarbon Compounds, Nitrogen Dioxide, Sulfur Dioxide
Measurement report: Long-range transport patterns into the tropical northwest Pacific during the CAMP2Ex aircraft campaign: chemical composition, size ... Hilario, Miguel Ricardo A., Crosbie, Ewan, Shook, Michael, Reid, Jeffrey S., Cambaliza, Maria Obiminda L., Simpas, James Bernard B., Ziemba, Luke, DiGangi, Joshua P., Diskin, Glenn S., Nguyen, Phu, Turk, F. Joseph, Winstead, Edward, Robinson, Claire E., Wang, Jian, Zhang, Jiaoshi, Wang, Yang, Yoon, Subin, Flynn, James, Alvarez, Sergio L., Behrangi, Ali, Sorooshian, Armin Sulfur Dioxide, Population Density, Atmospheric Water Vapor, Precipitation
Interannual variation of reactive nitrogen emissions and their impacts on PM2. 5 air pollution in China during 20052015 Chen, Youfan, Zhang, Lin, Henze, Daven K, Zhao, Yuanhong, Lu, Xiao, Winiwarter, Wilfried, Guo, Yixin, Liu, Xuejun, Wen, Zhang, Pan, Yuepeng, Song, Yu Population Size, Sulfur Dioxide
Variation of industrial air pollution emissions based on VIIRS thermal anomaly data Sun, Shuang, Li, Lingjun, Wu, Zhihong, Gautam, Atul, Li, Jinxiang, Zhao, Wenji Sulfur Dioxide
Long-term satellite-based estimates of air quality and premature mortality in Equatorial Asia through deep neural networks Bruni Zani, N, Lonati, G, Mead, M I, Latif, M T, Crippa, P Nitrogen Dioxide, Sulfur Dioxide, Carbon And Hydrocarbon Compounds, Ultraviolet Radiation
Inverse modeling of SO2 and NOx emissions over China using multisensor satellite data Part 1: Formulation and sensitivity analysis Wang, Yi, Wang, Jun, Xu, Xiaoguang, Henze, Daven K., Qu, Zhen, Yang, Kai Nitrogen Dioxide, Nitrogen Dioxide, Sulfur Dioxide
Measurement report: Statistical modelling of long-term trends of atmospheric inorganic gaseous species within proximity of the pollution hotspot in South ... Swartz, Jan-Stefan, van Zyl, Pieter G., Beukes, Johan P., Galy-Lacaux, Corinne, Ramandh, Avishkar, Pienaar, Jacobus J. Sulfur Dioxide
Spatial Assessment of Health Economic Losses from Exposure to Ambient Pollutants in China Wang, Kun, Wang, Wen, Wang, Weijia, Jiang, Xiaoqun, Yu, Tao, Ciren, Pubu Nitrogen Dioxide, Atmospheric Ozone, Sulfur Dioxide, Aerosol Extinction, Aerosol Optical Depth/Thickness
Study of mixing ratios of SO2 in a tropical rural environment in south India Renuka, K, Gadhavi, Harish, Jayaraman, A, Rao, S V Bhaskara, Lal, S Sulfur Dioxide
Why is the Indo-Gangetic Plain the region with the largest NH3 column in the globe during pre-monsoon and monsoon seasons? Wang, Tiantian, Song, Yu, Xu, Zhenying, Liu, Mingxu, Xu, Tingting, Liao, Wenling, Yin, Lifei, Cai, Xuhui, Kang, Ling, Zhang, Hongsheng, Zhu, Tong Sulfur Dioxide
Distribution of sulfur dioxide over Indian subcontinent: Remote sensing observations and model reanalysis Chutia, Lakhima, Ojha, Narendra, Girach, Imran A., Pathak, Binita, Sahu, Lokesh K., Bhuyan, Pradip Kumar Sulfur Dioxide
Evolution of SO2 and NOx Emissions from Several Large Combustion Plants Constantin, Daniel-Eduard, Bocaneala, Corina, Voiculescu, Mirela, Rosu, Adrian, Merlaud, Alexis, Roozendael, Michel Van, Georgescu, Puiu Lucian Sulfur Dioxide
Changes in Atmospheric, Meteorological, and Ocean Parameters Associated Jing, Feng, Chauhan, Akshansha, P Singh, Ramesh, Dash, Prasanjit Sulfur Dioxide, Tropopause, Surface Pressure, Air Temperature, Upper Air Temperature, Total Precipitable Water, Water Vapor, Cloud Height, Cloud Top Pressure, Cloud Top Temperature, Cloud Vertical Distribution, Emissivity, Sea Surface Temperature, Skin Temperature, Carbon Monoxide, Geopotential Height, Humidity, Water Vapor Profiles, Cloud Liquid Water/Ice, Outgoing Longwave Radiation, Methane, Atmospheric Ozone
Atmospheric measurements in the context of protection and conservation of cultural heritage objects Rosu, Adrian, Constantin, Daniel-Eduard, Arseni, Maxim, Timofti, Mihaela Atmospheric Ozone, Total Surface Precipitation Rate, Aerosols, Aerosol Extinction, Aerosol Optical Depth/Thickness, Angstrom Exponent, Aerosol Particle Properties, Carbonaceous Aerosols, Dust/Ash/Smoke, Organic Particles, Sulfate Particles, Sulfur Oxides, Sulfur Compounds, Sulfate, Sulfur Dioxide, Sulfur Oxides, Particulate Matter, Dimethyl Sulfide, Black Carbon, Sea Salt, PARTICULATE MATTER (PM 2.5), PARTICULATE MATTER (PM 10), PARTICULATE MATTER (PM 1.0), Nitrogen Dioxide, Ultraviolet Radiation
Development of the global atmospheric chemistry general circulation model BCC-GEOS-Chem v1. 0: model description and evaluation Lu, Xiao, Zhang, Lin, Wu, Tongwen, Long, Michael S., Wang, Jun, Jacob, Daniel J., Zhang, Fang, Zhang, Jie, Eastham, Sebastian D., Hu, Lu, Zhu, Lei, Liu, Xiong, Wei, Min Nitrogen Dioxide, Sulfur Dioxide
COVID-19 lockdowns improve air quality in the South-East Asian regions, as seen by the remote sensing satellites Metya, Abirlal, Dagupta, Panini, Halder, Santanu, Chakraborty, S., Tiwari, Yogesh K. Sulfur Dioxide, Nitrogen Dioxide
Limited Regional Aerosol and Cloud Microphysical Changes Despite Diamond, Michael S., Wood, Robert Nitrogen Dioxide, Sulfur Dioxide
New strategies for vertical transport in chemistry transport models: Lachatre, Mathieu, Mailler, Sylvain, Menut, Laurent, Turquety, Solene, Sellitto, Pasquale, Guermazi, Henda, Salerno, Giuseppe, Caltabiano, Tommaso, Carboni, Elisa Sulfur Dioxide
Responses of Salmonella typhimurium LT2, Vibrio harveyi, and Cryptosporidium parvum to UVB and UVA radiation Busse, Margaret M., Becker, Matous, Applegate, Bruce M., Camp, Joseph W., Blatchley, Ernest R. Nitrogen Dioxide, Atmospheric Ozone, Sulfur Dioxide
Estimating ground-level concentrations of multiple air pollutants and their health impacts in the Huaihe River Basin in China Zhang, Deying, Bai, Kaixu, Zhou, Yunyun, Shi, Runhe, Ren, Hongyan Nitrogen Dioxide, Nitrogen Dioxide, Sulfur Dioxide
Evolution of anthropogenic air pollutant emissions in Guangdong Province, China, from 2006 to 2015 Bian, Yahui, Huang, Zhijiong, Ou, Jiamin, Zhong, Zhuangmin, Xu, Yuanqian, Zhang, Zhiwei, Xiao, Xiao, Ye, Xiao, Wu, Yuqi, Yin, Xiaohong, Li, Cheng, Chen, Liangfu, Shao, Min, Zheng, Junyu Nitrogen Dioxide, Sulfur Dioxide
Extended database of SO2 column densities over Pakistan by exploiting satellite observations Jabeen, Zunaira, Khokhar, Muhammad Fahim Sulfur Dioxide
Long-range transport of volcanic aerosols over South Africa: A case study of the Calbuco volcanic eruption in Chile during April 2015 Shikwambana, Lerato, Sivakumar, Venkataraman Aerosol Extinction, Aerosol Optical Depth/Thickness, Aerosol Optical Depth/Thickness, Aerosol Optical Depth/Thickness, Aerosol Extinction, Aerosol Optical Depth/Thickness, Sulfur Dioxide
Trends in China's anthropogenic emissions since 2010 as the consequence of clean air actions Zheng, Bo, Tong, Dan, Li, Meng, Liu, Fei, Hong, Chaopeng, Geng, Guannan, Li, Haiyan, Li, Xin, Peng, Liqun, Qi, Ji, Yan, Liu, Zhang, Yuxuan, Zhao, Hongyan, Zheng, Yixuan, He, Kebin, Zhang, Qiang Sulfur Dioxide
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