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OMI/Aura Level 1B Solar Irradiances V003 (OML1BIRR) at GES DISC

Entry ID: GES_DISC_OML1BIRR_V003

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Summary

Abstract: The Level-1B (L1B) Radiance Product OML1BIRR (Version-3) from the Aura-OMI is now available (http://disc.gsfc.nasa.gov/Aura/OMI/oml1birr_v003.shtml) to public from the NASA GSFC Earth Sciences Data and Information Services Center (GES DISC).

The Ozone Monitoring Instrument (OMI), an ultraviolet-visible imaging spectrometer was launched aboard the EOS-Aura satellite on July 15, ... 2004(1:38 pm equator crossing time, ascending mode). OMI with its 2600 km viewing swath width (60 cross track and about 1650 along track pixels) provides almost daily global coverage. OMI is a contribution of the Netherlands Space Office (NSO) in collaboration with Finish Meteorological Institute (FMI), to the US EOS-Aura Mission. The principal investigator's (Dr. Pieternel Levelt) institute is the KNMI (Royal Netherlands Meteorological Institute). OMI is designed to monitor stratospheric and tropospheric ozone, clouds, aerosols and smoke from biomass burning, SO2 from volcanic eruptions, and key tropospheric pollutants (HCHO and NO2) and ozone depleting gases (OClO and BrO).

The shortname for this OMI Level-1B Product is OML1BIRR and the lead algorithm scientists for this product is Dr. Marcel Dobber from the KNMI.

OMI calibrated and geolocated radiances for the UV and Visible channels, spectral irradiances, calibration measurements, and all derived geophysical atmospheric products are archived at the NASA Goddard DAAC.

The OMI Level 1B Solar Irradiance Product OML1BIRR contains spectral measurements of the solar irradiances from UV1 (264-311 nm; 159 channels), UV2 (307-383 nm, 557 channels) and VIS (349-504 nm,751 channels) detectors.

OMI makes solar irradiance measurements indirectly using a diffuser. Each solar observation consists of multiple measurements at different solar elevation angles. This product provides average of the individual measurements made along track to average out the solar elevation dependent BRDF features of the diffuser.

OML1BIRR files are stored in EOS Hierarchical Data Format (HDF-EOS 2.4) which is based on HDF4. The radiance for the earth measurements (also referred as signal) and its precision are stored as a 16 bit mantissa and an 8-bit exponent. The signal can be computed using the equation: signal = signal_mantissa x 10 exponent . For the precision, the same exponent is used as for the signal. For browsing and extracting data from these files, some software and tools are made available from the site:
http://disc.gsfc.nasa.gov/Aura/tools.shtml

A list of all of the OMI data products and the documents related to algorithm, data quality and file format specifics are available from the site:
http://disc.gsfc.nasa.gov/Aura/OMI/

For more information on Ozone Monitoring Instrument and atmospheric
data products, please visit the OMI-Aura sites:
http://aura.gsfc.nasa.gov/
http://www.knmi.nl/omi/research/documents/

Related URL

Link: GET DATA > MIRADOR

Description: Fast Access of OMI data through GES-DISC Mirador

Geographic Coverage

(Click for Interactive Map)

Spatial coordinates

N: 90.0

S: -90.0

E: 180.0

W: -180.0

Data Set Citation

Dataset Originator/Creator: OMI SIPS

Dataset Title: OMI/Aura Level 1B Solar Irradiances

Dataset Series Name: OML1BIRR

Dataset Release Date: 2007

Dataset Release Place: NASA Goddard Space Flight Center

Version: 003

Data Presentation Form: Digital Science Data

Online Resource: http://disc.gsfc.nasa.gov/Aura/OMI/oml1birr_v003.shtml

Temporal Coverage

Start Date: 2004-10-01

Location Keywords

GEOGRAPHIC REGION > GLOBAL

Data Resolution

Temporal Resolution: Approx 1 hour (day time orbit)
Temporal Resolution Range: Hourly - < Daily

Science Keywords

ATMOSPHERE > ATMOSPHERIC RADIATION > SOLAR IRRADIANCE

SUN-EARTH INTERACTIONS > SOLAR ACTIVITY > SOLAR IRRADIANCE > UV AND VISIBLE SOLAR IRRADIANCES AND PRECISIONS

ISO Topic Category

CLIMATOLOGY/METEOROLOGY/ATMOSPHERE

Platform

AURA > Aura

Instrument

OMI > Ozone Monitoring Instrument

Project

EOSDIS > Earth Observing System Data Information System

ESIP > Earth Science Information Partners Program

AURA > Earth Observing System (EOS), AURA

CWIC > CEOS WGISS Integrated Catalog

Quality The version 003 Level-1B product is the first public release. The
quality of this product is not fully validated yet.

Use Constraints This Level-1B Data set (version 003/first public release) is not fully
validated yet. Before using it in any publication please
contact algorithm team leads for the current known problems and
updates.

Ancillary Keywords

Solar Irradiances

EOSDIS

Originating Center

OSIPS

Data Center

Goddard Earth Sciences Data and Information Services Center (formerly Goddard DAAC), Global Change Data Center, Earth Sciences Division, Science and Exploration Directorate, Goddard Space Flight Center, NASA

Data Center URL: http://disc.gsfc.nasa.gov/
Dataset ID: OML1BIRR

Data Center Personnel
Name: GES DISC HELP DESK SUPPORT GROUP Phone: 301-614-5224 Fax: 301-614-5268 Email: gsfc-help-disc at lists.nasa.gov Contact Address: Goddard Earth Sciences Data and Information Services Center Code 610.2 NASA Goddard Space Flight Center City: Greenbelt Province or State: MD Postal Code: 20771 Country: USA

Distribution

Distribution Media: FTP

Distribution Size: Approx 0.2 MB per file

Distribution Format: HDF-EOS

Fees: None

Personnel

MARCEL DOBBER, PH. D

Role: INVESTIGATOR

Contact Address:

KNMI

P.O.Box 201

City: De Bilt

Province or State: AE

Postal Code: 3730

Country: NL

SURAIYA P. AHMAD, PH. D

Role: TECHNICAL CONTACT

Role: DIF AUTHOR

Phone: 301-614-5284

Email: Suraiya.Ahmad at nasa.gov

Contact Address:

NASA Goddard Space Flight Center

Code 610.2

City: Greenbelt

Province or State: MD

Postal Code: 20771

Country: USA

Publications/References

Ahmad, S. P., P. F. Levelt, P. K. Bhartia, E. Hilsenrath, G. W.
Leppelmeier,and J. E. Johnson, &Atmospheric Products from the
Ozone Monitoring Instrument(OMI)&, Proceedings of SPIE
conference on Earth Observing Systems VIII, San Diego,
...

Extended Metadata Properties

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Creation and Review Dates

DIF Creation Date: 2007-08-03

Last DIF Revision Date: 2013-04-29

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