The OMPS_NPP_NMSO2_PCA_L2 product is part of the MEaSUREs (Making Earth Science Data Records for Use in Research Environments) suite of products. It is retrieved from the NASA/NOAA Suomi National Polar-orbiting Partnership (SNPP) Ozone Mapping and Profiler Suite (OMPS) Nadir Mapper (NM) spectrometer and provides contiguous daily global monitoring of anthropogenic and volcanic sulfur dioxide (SO2), an important pollutant and aerosol precursor that affects both air quality and the climate. The product is based on the NASA Goddard Space Flight Center principal component analysis (PCA) spectral fitting algorithm (Li et al., 2013, 2017), and continues (Zhang et al., 2017) NASA's Earth Observing System (EOS) standard Aura/Ozone Monitoring Instrument SO2 product (OMSO2). The latest OMPS_NPP_NMSO2_PCA_L2 V2 product uses new Jacobian lookup tables and more realistic model based a priori profiles in anthropogenic SO2 retrievals. This helps to more accurately account for the pixel-to-pixel variation in SO2 sensitivity due to different factors such as the vertical distribution of SO2, solar and viewing angles, surface reflectivity, and cloudiness. As compared with the previous OMPS_NPP_NMSO2_PCA_L2 V1.2 product that assumes the same SO2 sensitivity for all OMPS pixels, the new V2 anthropogenic SO2 retrievals have reduced retrieval biases especially over background regions (see Figure 1 for an example). The same updated PCA SO2 retrieval algorithm (Li et al., 2020) is also used to produce the recently released OMSO2 V2 product (doi:10.5067/Aura/OMI/DATA2022). The new OMPS_NPP_NMSO2_PCA_L2 V2 product thus offers enhanced consistency between the NASA EOS standard (OMI) and continuity (OMPS) SO2 data records Sulfur Dioxide (SO2) is a short-lived gas primarily produced by volcanoes, power plants, refineries, metal smelting and burning of fossil fuels. Where SO2 remains near the Earth's surface, it is toxic, causes acid rain, and degrades air quality. Where SO2 is lofted into the free troposphere, it forms aerosols that can alter cloud reflectivity and precipitation. In the stratosphere, volcanic SO2 forms sulfate aerosols that can result in climate change.
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Spatial Extent: | Bounding Rectangle: N: 90 S: -90 E: 180 W: -180 |
Data Format(s): | Distribution: HDF5 |
Temporal Extent: | Platform(s): | SUOMI-NPP | |
Data Center(s): | NASA/GSFC/SED/ESD/GCDC/GESDISC | Instrument(s): | OMPS |
Version: | 2 |
10.5067/MEASURES/SO2/DATA205
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Last Revision |
2
Active
The Earth Observing System Data and Information System (EOSDIS) data use policy for NASA data can be accessed at https://earthdata.nasa.gov/earth-observation-data/data-use-policy. For information on how to properly cite and acknowledge data from the NASA GES DISC, refer to https://disc.gsfc.nasa.gov/information/documents?title=data-policy.
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Title: Continuation of long-term global SO2 pollution monitoring from OMI to OMPS
Publication Date: 2017-01-01
Author(s): Zhang, Y., Li, C., Krotkov, N. A., Joiner, J., Fioletov, V., and McLinden, C.
Series: Atmos. Meas. Tech.
Volume: 10
Pages: 1495-1509
DOI: 10.5194/amt-10-1495-2017
Title: New-generation NASA Aura Ozone Monitoring Instrument (OMI) volcanic SO2 dataset: Algorithm description, initial results, and continuation with the Suomi-NPP Ozone Mapping and Profiler Suite (OMPS)
Publication Date: 2017-01-01
Author(s): Li, C., Krotkov, N. A., Carn, S., Zhang, Y., Spurr, R. J. D., and Joiner, J.
Series: Atmos. Meas. Tech.
Volume: 10
Pages: 445-458
DOI: 10.5194/amt-10-445-2017
Title: A fast and sensitive new satellite SO2 retrieval algorithm based on principal component analysis: Application to the ozone monitoring instrument: NEW OMI PCA SO2 Retrieval
Publication Date: 2013-01-01
Author(s): Li, C., Joiner, J., Krotkov, N. A., and Bhartia, P. K.
Series: Geophys. Res. Lett.
Volume: 40
Pages: 6314-6318
DOI: 10.1002/2013GL058134
Title: Version 2 Ozone Monitoring Instrument SO2 Product (OMSO2 V2): New Anthropogenic SO2 Vertical Column Density Dataset
Publication Date: 2020-01-01
Author(s): Li, C., N. A. Krotkov, P. J. T. Leonard, S. Carn, J. Joiner, R. J. D. Spurr, and A. Vasilkov
Series: Atmos. Meas. Tech. Discuss.
Pages: 1-29
DOI: 10.5194/amt-2020-186
Project Short Name | Campaigns | Project Dates |
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MEaSUREs | No campaigns listed. | No dates provided. |
Coverage Type | Zone Identifier | Geometry | Granule Representation |
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HORIZONTAL | GEODETIC | GEODETIC |
This data center does not have any addresses listed.
This data center does not have any contact mechanisms listed.
NASA
Goddard Space Flight Center
Mailstop 614
Greenbelt,
MD
20771
301-614-5616
Distributed Active Archive Center Global Change Data Center
Code 610.2
NASA Goddard Space Flight Center
Greenbelt,
MD
20771
301-614-5705
Goddard Earth Sciences Data and Information Services Center
Code 610.2
NASA Goddard Space Flight Center
Greenbelt,
MD
20771
301-614-5224
Format: HDF5
Format Type: Native
Media: Online Archive
Fees: None