ESDS Program

About Ozone SIPS

NASA's Science Investigator-led Processing System (SIPS) provides processing of the raw satellite (Level 0) data for both the Ozone Mapping and Profiler Suite (OMPS) and Ozone Monitoring Instrument (OMI) projects in NASA's Land Atmosphere Near real-time Capability for EOS (LANCE).

LANCE-OMPS provides certain OMPS Level 2 (L2) products on a near real-time basis. On average, the L2 products are available within 3 hours of the observation time.

LANCE-OMI provides certain OMI L2 and L3 products on a near real-time basis. On average, the L2 products are available within 3.5 hours of the observation time. See the OMI SIPS web page for more information.

About OMPS

The Ozone Mapping and Profiler Suite (OMPS) is a suite of 3 instruments on the joint NASA/NOAA Suomi National Polar-orbiting Partnership (Suomi NPP) spacecraft and a suite of 2 instruments on the NOAA-20 (JPSS-1) spacecraft. The OMPS instruments collect total column and vertical profile ozone data and continue the daily global data produced by the current ozone monitoring systems, the Solar Backscatter Ultraviolet radiometer (SBUV)/2, OMI and Total Ozone Mapping Spectrometer (TOMS), but with higher fidelity. The Nadir sensor uses a wide field-of-view push-broom telescope to feed two separate spectrometers. The Nadir total column spectrometer (mapper) measures the scene radiance between 300 and 380 nanometers (nm) with a resolution of 1 nm sampled at 0.42 nm and a 24-hour ground revisit time. Measurements from this spectrometer are used to generate total column ozone data With better than 50 x 50 kilometer (km) resolution at Nadir. The Nadir profile spectrometer measures between 250 and 310 nm with the same spectral sampling in a single ground pixel of 250x250 km. The Limb profiler is being flown as an experimental sensor on Suomi NPP and provides a higher vertical resolution capability than the Nadir profiler; note that it is not part of LANCE.

System Reliability

Ozone SIPS Hardware Configuration


Diagram showing the Ozone Science Investigator led Processing System (SIPS) Hardware Configuration

The simple architecture used for LANCE-OMPS is shown in the diagram above. The system includes 2TB of archive disk on the FTP server. The latter allows the archive of approximately 7 data days of NRT data products.

Data Flows


Diagram showing the near real-time data flow of Ozone Mapping and Profiler Suite (OMPS)

About Ozone SIPS Data Flow for OMPS

The data flow is shown in the diagram above. The session based L0 data for OMPS are ingested from NASA's EOS Data and Operations System (EDOS). These are processed by OMPS L1A software which removes duplicate packets, removes incorrectly time tagged data before processing by the L1B software and then the L2 retrieval algorithms. All EDOS data products are sent to the PDR server by EDOS and are ingested by LANCE-OMPS, processed and stages for access. In addition the L2 metadata data is sent to the Common Metadata Repository (CMR) which allows users to search and access the data.

Algorithm Versions

Product Version
NMTO3-L2 2


Subscription Services

Contact: Phil Durbin
Phone: 301-352-4673
Email: Phillip.Durbin @

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