Summary

Description

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) 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.

Summary

Description

The second release of Collection 3 OMI/Aura level-2G daily global gridded (0.25x0.25 deg) Aerosol data product OMAEROG (Version 003 has been made available to the public in March 2012 from the NASA Goddard Earth Sciences Data and Information Services Center (GES DISC), see http://disc.gsfc.nasa.gov/Aura/OMI/omaerog_v003.shtml OMI provides two aerosol products OMAERUV and OMAERO that are based on two different algorithms. The OMAERUV product uses the near-UV algorithm. The OMAERO product is based on the multi-wavelength algorithm that uses up to 20 wavelength bands between 331 nm and 500 nm. OMAERO retrieval algorithm is developed by the KNMI OMI Team Scientists. Drs. Deborah Stein-Zweers, Martin Sneep and Pepijn Veefkind are now the key investigators of this product. The OMAERO product contains Aerosol Optical Depths, Single Scatterin Albedo and other ancillary and geolocation informations. (The shortname for this Level-2G Global Gridded Aerosol Product is OMAEROG_V003) This Level-2G daily global gridded product OMAEROG is based on the pixel level OMI Level-2 Aerosol product OMAERO. OMAEROG is a special Level-2 gridded product where pixel level products are binned into 0.25x0.25 degree global grids. It contains the data for all scenes that have observation time betweeen UTC times of 00:00:00 and 23:59:59.9999 . All data pixels that fall in a grid box are saved without averaging. Scientist can apply data filtering scheme of their choice and create new gridded products. The GES DISC developed interactive tool Giovanni ( http://giovanni.gsfc.nasa.gov/ ) provides web based capabilities to browse and explore these data. The OMAEROG data product contains almost all parameters that are contained in OMAERO. For example, in addition to the extinction optical depth, single scattering albedo it also contains aerosol indices, cloud fraction, cloud pressure, terrain height, geolocation, solar and satellite viewing angles, and extensive quality flags. OMAEROG files are stored in EOS Hierarchical Data Format (HDF-EOS5). Each file contains daily data from approximately 15 orbits . The maximum file size for the OMAEROG data product is about 78 Mbytes.

Summary

Description

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) 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.

Summary

Description

The second release of Collection 3 OMI/Aura level-2G daily global gridded (0.25x0.25 deg) Aerosol data product OMAEROG (Version 003 has been made available to the public in March 2012 from the NASA Goddard Earth Sciences Data and Information Services Center (GES DISC), see http://disc.gsfc.nasa.gov/Aura/OMI/omaerog_v003.shtml OMI provides two aerosol products OMAERUV and OMAERO that are based on two different algorithms. The OMAERUV product uses the near-UV algorithm. The OMAERO product is based on the multi-wavelength algorithm that uses up to 20 wavelength bands between 331 nm and 500 nm. OMAERO retrieval algorithm is developed by the KNMI OMI Team Scientists. Drs. Deborah Stein-Zweers, Martin Sneep and Pepijn Veefkind are now the key investigators of this product. The OMAERO product contains Aerosol Optical Depths, Single Scatterin Albedo and other ancillary and geolocation informations. (The shortname for this Level-2G Global Gridded Aerosol Product is OMAEROG_V003) This Level-2G daily global gridded product OMAEROG is based on the pixel level OMI Level-2 Aerosol product OMAERO. OMAEROG is a special Level-2 gridded product where pixel level products are binned into 0.25x0.25 degree global grids. It contains the data for all scenes that have observation time betweeen UTC times of 00:00:00 and 23:59:59.9999 . All data pixels that fall in a grid box are saved without averaging. Scientist can apply data filtering scheme of their choice and create new gridded products. The GES DISC developed interactive tool Giovanni ( http://giovanni.gsfc.nasa.gov/ ) provides web based capabilities to browse and explore these data. The OMAEROG data product contains almost all parameters that are contained in OMAERO. For example, in addition to the extinction optical depth, single scattering albedo it also contains aerosol indices, cloud fraction, cloud pressure, terrain height, geolocation, solar and satellite viewing angles, and extensive quality flags. OMAEROG files are stored in EOS Hierarchical Data Format (HDF-EOS5). Each file contains daily data from approximately 15 orbits . The maximum file size for the OMAEROG data product is about 78 Mbytes.

Summary

Description

The Version-3 Aura/OMI Pixel Corner Product, OMPIXCOR, is now available from the NASA Goddard Earth Sciences Data and Information Services Center (GES DISC)for the public access.(http://disc.gsfc.nasa.gov/Aura/OMI/ompixcor_v003.shtml ) (The shortname for this Level-2 OMI product is OMPIXCOR) The algorithm lead for this product is the US OMI scientists Dr. Thomas Kurosu (tkurosu@cfa.harvard.edu) from the Harvard-Smithsonian Center, Cambridge, MA. The OMPIXCOR product contains ground locations of the OMI pixel corners in the global scanning mode and other ancillary informations. OMPIXCOR files are stored in EOS Hierarchical Data Format (HDF-EOS5). Each file contains data from the day lit portion of an orbit (~53 minutes) . There are approximately 14 orbits per day. The average file size for the OMPIXCOR data product is about 5 Mbytes.

Summary

Description

The second release of Collection 3 OMI/Aura level-2G daily global gridded (0.25x0.25 deg) Aerosol data product OMAEROG (Version 003 has been made available to the public in March 2012 from the NASA Goddard Earth Sciences Data and Information Services Center (GES DISC), see http://disc.gsfc.nasa.gov/Aura/OMI/omaerog_v003.shtml OMI provides two aerosol products OMAERUV and OMAERO that are based on two different algorithms. The OMAERUV product uses the near-UV algorithm. The OMAERO product is based on the multi-wavelength algorithm that uses up to 20 wavelength bands between 331 nm and 500 nm. OMAERO retrieval algorithm is developed by the KNMI OMI Team Scientists. Drs. Deborah Stein-Zweers, Martin Sneep and Pepijn Veefkind are now the key investigators of this product. The OMAERO product contains Aerosol Optical Depths, Single Scatterin Albedo and other ancillary and geolocation informations. (The shortname for this Level-2G Global Gridded Aerosol Product is OMAEROG_V003) This Level-2G daily global gridded product OMAEROG is based on the pixel level OMI Level-2 Aerosol product OMAERO. OMAEROG is a special Level-2 gridded product where pixel level products are binned into 0.25x0.25 degree global grids. It contains the data for all scenes that have observation time betweeen UTC times of 00:00:00 and 23:59:59.9999 . All data pixels that fall in a grid box are saved without averaging. Scientist can apply data filtering scheme of their choice and create new gridded products. The GES DISC developed interactive tool Giovanni ( http://giovanni.gsfc.nasa.gov/ ) provides web based capabilities to browse and explore these data. The OMAEROG data product contains almost all parameters that are contained in OMAERO. For example, in addition to the extinction optical depth, single scattering albedo it also contains aerosol indices, cloud fraction, cloud pressure, terrain height, geolocation, solar and satellite viewing angles, and extensive quality flags. OMAEROG files are stored in EOS Hierarchical Data Format (HDF-EOS5). Each file contains daily data from approximately 15 orbits . The maximum file size for the OMAEROG data product is about 78 Mbytes.

Summary

Description

The second release of Collection 3 OMI/Aura level-2G daily global gridded (0.25x0.25 deg) Aerosol data product OMAEROG (Version 003 has been made available to the public in March 2012 from the NASA Goddard Earth Sciences Data and Information Services Center (GES DISC), see http://disc.gsfc.nasa.gov/Aura/OMI/omaerog_v003.shtml OMI provides two aerosol products OMAERUV and OMAERO that are based on two different algorithms. The OMAERUV product uses the near-UV algorithm. The OMAERO product is based on the multi-wavelength algorithm that uses up to 20 wavelength bands between 331 nm and 500 nm. OMAERO retrieval algorithm is developed by the KNMI OMI Team Scientists. Drs. Deborah Stein-Zweers, Martin Sneep and Pepijn Veefkind are now the key investigators of this product. The OMAERO product contains Aerosol Optical Depths, Single Scatterin Albedo and other ancillary and geolocation informations. (The shortname for this Level-2G Global Gridded Aerosol Product is OMAEROG_V003) This Level-2G daily global gridded product OMAEROG is based on the pixel level OMI Level-2 Aerosol product OMAERO. OMAEROG is a special Level-2 gridded product where pixel level products are binned into 0.25x0.25 degree global grids. It contains the data for all scenes that have observation time betweeen UTC times of 00:00:00 and 23:59:59.9999 . All data pixels that fall in a grid box are saved without averaging. Scientist can apply data filtering scheme of their choice and create new gridded products. The GES DISC developed interactive tool Giovanni ( http://giovanni.gsfc.nasa.gov/ ) provides web based capabilities to browse and explore these data. The OMAEROG data product contains almost all parameters that are contained in OMAERO. For example, in addition to the extinction optical depth, single scattering albedo it also contains aerosol indices, cloud fraction, cloud pressure, terrain height, geolocation, solar and satellite viewing angles, and extensive quality flags. OMAEROG files are stored in EOS Hierarchical Data Format (HDF-EOS5). Each file contains daily data from approximately 15 orbits . The maximum file size for the OMAEROG data product is about 78 Mbytes.

Summary

Description

The second release of Collection 3 OMI/Aura level-2G daily global gridded (0.25x0.25 deg) Aerosol data product OMAEROG (Version 003 has been made available to the public in March 2012 from the NASA Goddard Earth Sciences Data and Information Services Center (GES DISC), see http://disc.gsfc.nasa.gov/Aura/OMI/omaerog_v003.shtml OMI provides two aerosol products OMAERUV and OMAERO that are based on two different algorithms. The OMAERUV product uses the near-UV algorithm. The OMAERO product is based on the multi-wavelength algorithm that uses up to 20 wavelength bands between 331 nm and 500 nm. OMAERO retrieval algorithm is developed by the KNMI OMI Team Scientists. Drs. Deborah Stein-Zweers, Martin Sneep and Pepijn Veefkind are now the key investigators of this product. The OMAERO product contains Aerosol Optical Depths, Single Scatterin Albedo and other ancillary and geolocation informations. (The shortname for this Level-2G Global Gridded Aerosol Product is OMAEROG_V003) This Level-2G daily global gridded product OMAEROG is based on the pixel level OMI Level-2 Aerosol product OMAERO. OMAEROG is a special Level-2 gridded product where pixel level products are binned into 0.25x0.25 degree global grids. It contains the data for all scenes that have observation time betweeen UTC times of 00:00:00 and 23:59:59.9999 . All data pixels that fall in a grid box are saved without averaging. Scientist can apply data filtering scheme of their choice and create new gridded products. The GES DISC developed interactive tool Giovanni ( http://giovanni.gsfc.nasa.gov/ ) provides web based capabilities to browse and explore these data. The OMAEROG data product contains almost all parameters that are contained in OMAERO. For example, in addition to the extinction optical depth, single scattering albedo it also contains aerosol indices, cloud fraction, cloud pressure, terrain height, geolocation, solar and satellite viewing angles, and extensive quality flags. OMAEROG files are stored in EOS Hierarchical Data Format (HDF-EOS5). Each file contains daily data from approximately 15 orbits . The maximum file size for the OMAEROG data product is about 78 Mbytes.

Summary

Description

The Version-3 Aura-OMI Formaldehyde Product OMHCHOG is now available (http://disc.gsfc.nasa.gov/Aura/OMI/omhchog_v003.shtml) from the NASA Goddard Earth Sciences Data and Information Services Center (GES DISC) for the public access. (The shortname for this Level-2G OMI total column Formaldehyde product is OMHCHOG) The algorithm leads for this product are the US OMI scientists Dr. Kelly Chance (kchance@cfa.harvard.edu) and Dr. Thomas Kurosu (tkurosu@cfa.harvard.edu) from the Harvard-Smithsonian Center, Cambridge, MA. OMHCHOG data product is a special Level-2 Global Gridded Product where pixel level data are binned into 0.25x0.25 degree grids. It contains data for all L2 scenes that have observation time betweeen UTC times of 00:00:00 and 23:59:59.9999. All data pixels that fall in a grid box are saved without Averaging (third dimension provides indexing for the data points in each small grid). Scientist can apply data filtering scheme of their choice and create Level-3 global gridded products. The GES DISC developed interactive tool Giovanni( http://giovanni.gsfc.nasa.gov/ ) provides on-line web based capabilities to browse and explore the Level-2G data. The OMHCHOG data product contains almost all parameters (e.g. total vertical column HCHO, standard erros, quality flags, geolocation and ancillary information) that are contained in the OMHCHO product. OMHCHOG data are stored in EOS Hierarchical Data Format (HDF-EOS5). Each file contains data from the day lit portions of 14 to 15 orbits that cover the globe in a day. The average file size for the OMGCHOG data product is about 55 Mbytes. A list of tools for browsing and extracting data from these files can be found at: http://disc.gsfc.nasa.gov/Aura/tools.shtml A short Readme Document giving brief algorithm description and documents containing known data quality related issues for the OMHCHO product (the source of OMHCHOG data)are available from the GES DISC site( http://disc.gsfc.nasa.gov/Aura/OMI/omhchog_v003.shtml )

Summary

Description

The Version-3 Aura-OMI Formaldehyde Product OMHCHOG is now available (http://disc.gsfc.nasa.gov/Aura/OMI/omhchog_v003.shtml) from the NASA Goddard Earth Sciences Data and Information Services Center (GES DISC) for the public access. (The shortname for this Level-2G OMI total column Formaldehyde product is OMHCHOG) The algorithm leads for this product are the US OMI scientists Dr. Kelly Chance (kchance@cfa.harvard.edu) and Dr. Thomas Kurosu (tkurosu@cfa.harvard.edu) from the Harvard-Smithsonian Center, Cambridge, MA. OMHCHOG data product is a special Level-2 Global Gridded Product where pixel level data are binned into 0.25x0.25 degree grids. It contains data for all L2 scenes that have observation time betweeen UTC times of 00:00:00 and 23:59:59.9999. All data pixels that fall in a grid box are saved without Averaging (third dimension provides indexing for the data points in each small grid). Scientist can apply data filtering scheme of their choice and create Level-3 global gridded products. The GES DISC developed interactive tool Giovanni( http://giovanni.gsfc.nasa.gov/ ) provides on-line web based capabilities to browse and explore the Level-2G data. The OMHCHOG data product contains almost all parameters (e.g. total vertical column HCHO, standard erros, quality flags, geolocation and ancillary information) that are contained in the OMHCHO product. OMHCHOG data are stored in EOS Hierarchical Data Format (HDF-EOS5). Each file contains data from the day lit portions of 14 to 15 orbits that cover the globe in a day. The average file size for the OMGCHOG data product is about 55 Mbytes. A list of tools for browsing and extracting data from these files can be found at: http://disc.gsfc.nasa.gov/Aura/tools.shtml A short Readme Document giving brief algorithm description and documents containing known data quality related issues for the OMHCHO product (the source of OMHCHOG data)are available from the GES DISC site( http://disc.gsfc.nasa.gov/Aura/OMI/omhchog_v003.shtml )

Summary

Description

The Level-1B (L1B) Radiance Product OML1BRVG (Version-3) from the Aura-OMI is now available (http://disc.gsfc.nasa.gov/Aura/OMI/oml1brvg_v003.shtml) to public from the NASA GSFC Earth Sciences Data and Information Services Center (GES DISC). OMI calibrated and geolocated radiances for the channels in the UV1 (264-311 nm), UV2 (307-383 nm), and VIS(349-504) regions, spectral irradiances, calibration measurements, and all derived geophysical atmospheric products are archived at the NASA Goddard DAAC. (The shortname for this OMI Level-1B Product is OML1BRVG) The lead algorithm scientist for this product is Dr. Marcel Dobber from the KNMI. The OMI Level 1B Visible Radiance Global Product OML1BRVG contains geolocated measurements of the earth radiances from the VIS detectors (349-504 nm,751 channels). In the standard global measurement mode, OMI observes 60 ground pixels (13 km x 24 km at nadir) across the swath for each of the 557 channels of UV2 (307-383 nm) and VIS (349-504 nm) and 30 ground pixels (13 km x 48 km at nadir) for the 159 channels of UV1 (264-311 nm). Once a month in one orbit OMI performs dark measurements, it does not perform radiance measurements. In addition, OMI performs spatial zoom measurements one day per month. For that day, this product also contains VIS measurements that are rebinned from the spatial zoom-in measurements. In original spatial zoom mode the nadir ground pixel size is 13 x 12 km and measurements are available only for the UV2 and VIS wavelengths (306 to 432 nm). OML1BRVG 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. Each file contains data from the day lit portion of an orbit (~53 minutes) and is roughly 565 MB in size. There are approximately 15 orbits per day.

Summary

Description

The Level-1B (L1B) Radiance Product OML1BRVZ (Version-3) from the Aura-OMI is now available (http://disc.gsfc.nasa.gov/Aura/OMI/oml1brvz_v003.shtml) to public from the NASA GSFC Earth Sciences Data and Information Services Center (GES DISC). OMI calibrated and geolocated radiances for the channels in the UV1 (264-311 nm), UV2 (307-383 nm)and VIS(349-504) regions, spectral irradiances, calibration measurements, and all derived geophysical atmospheric products are archived at the NASA Goddard DAAC. (The shortname for this OMI Level-1B Product is OML1BRVZ) The lead algorithm scientist for this product is Dr. Marcel Dobber from the KNMI. The OMI Level 1B Visible Radiance Zoom-in Product OML1BRVZ contains geolocated Earth view spectral radiances from the VIS channel detectors in the wavelength range of 349 to 504 nm. The product contains the measurements that are taken once a month using the spatial zoom-in measurement modes (30 pixels covering 750 km swath width). In spatial zoom in mode the nadir ground pixel size is 13 x 12 km2 and measurements are available only for the wavelengths 306 to 432 nm. OML1BRVZ 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. Each file contains data from the day lit portion of an orbit (~53 minutes) and is roughly 570 MB in size. There are approximately 14 orbits per day.

Summary

Description

The Level-1B (L1B) Radiance Product OML1BRVZ (Version-3) from the Aura-OMI is now available (http://disc.gsfc.nasa.gov/Aura/OMI/oml1brvz_v003.shtml) to public from the NASA GSFC Earth Sciences Data and Information Services Center (GES DISC). OMI calibrated and geolocated radiances for the channels in the UV1 (264-311 nm), UV2 (307-383 nm)and VIS(349-504) regions, spectral irradiances, calibration measurements, and all derived geophysical atmospheric products are archived at the NASA Goddard DAAC. (The shortname for this OMI Level-1B Product is OML1BRVZ) The lead algorithm scientist for this product is Dr. Marcel Dobber from the KNMI. The OMI Level 1B Visible Radiance Zoom-in Product OML1BRVZ contains geolocated Earth view spectral radiances from the VIS channel detectors in the wavelength range of 349 to 504 nm. The product contains the measurements that are taken once a month using the spatial zoom-in measurement modes (30 pixels covering 750 km swath width). In spatial zoom in mode the nadir ground pixel size is 13 x 12 km2 and measurements are available only for the wavelengths 306 to 432 nm. OML1BRVZ 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. Each file contains data from the day lit portion of an orbit (~53 minutes) and is roughly 570 MB in size. There are approximately 14 orbits per day.

Summary

Description

The Collection-3 Bromine Monoxide Product OMBRO from the Aura-OMI, is now available http://disc.gsfc.nasa.gov/Aura/OMI/ombro_v003.shtml) from the NASA Goddard Earth Sciences Data and Information Services Center (GES DISC) for the public access. (The shortname for this Level-2 OMI total column BrO product is OMBRO) The algorithm leads for this product are the US OMI scientists Dr. Kelly Chance (kchance@cfa.harvard.edu) and Dr. Thomas Kurosu (tkurosu@cfa.harvard.edu) from the Harvard-Smithsonian Center, Cambridge, MA. The OMBRO product contains total vertical column BrO, standard erros (rms and sigma), quality flags, geolocation and other ancillary information. OMBRO files are stored in EOS Hierarchical Data Format(HDF-EOS5). Each file contains data from the day lit portion of an orbit (~53 minutes). There are approximately 14 orbits per day. The average file size for the OMBRO data product is about 5 Mbytes.

Summary

Description

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) 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.

Summary

Description

The Collection-3 Bromine Monoxide Product OMBRO from the Aura-OMI, is now available http://disc.gsfc.nasa.gov/Aura/OMI/ombro_v003.shtml) from the NASA Goddard Earth Sciences Data and Information Services Center (GES DISC) for the public access. (The shortname for this Level-2 OMI total column BrO product is OMBRO) The algorithm leads for this product are the US OMI scientists Dr. Kelly Chance (kchance@cfa.harvard.edu) and Dr. Thomas Kurosu (tkurosu@cfa.harvard.edu) from the Harvard-Smithsonian Center, Cambridge, MA. The OMBRO product contains total vertical column BrO, standard erros (rms and sigma), quality flags, geolocation and other ancillary information. OMBRO files are stored in EOS Hierarchical Data Format(HDF-EOS5). Each file contains data from the day lit portion of an orbit (~53 minutes). There are approximately 14 orbits per day. The average file size for the OMBRO data product is about 5 Mbytes.

Summary

Description

The Collection-3 Bromine Monoxide Product OMBRO from the Aura-OMI, is now available http://disc.gsfc.nasa.gov/Aura/OMI/ombro_v003.shtml) from the NASA Goddard Earth Sciences Data and Information Services Center (GES DISC) for the public access. (The shortname for this Level-2 OMI total column BrO product is OMBRO) The algorithm leads for this product are the US OMI scientists Dr. Kelly Chance (kchance@cfa.harvard.edu) and Dr. Thomas Kurosu (tkurosu@cfa.harvard.edu) from the Harvard-Smithsonian Center, Cambridge, MA. The OMBRO product contains total vertical column BrO, standard erros (rms and sigma), quality flags, geolocation and other ancillary information. OMBRO files are stored in EOS Hierarchical Data Format(HDF-EOS5). Each file contains data from the day lit portion of an orbit (~53 minutes). There are approximately 14 orbits per day. The average file size for the OMBRO data product is about 5 Mbytes.

Summary

Description

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) 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.

Summary

Description

The Orbiting Carbon Observatory is the first NASA mission designed to collect space-based measurements of atmospheric carbon dioxide with the precision, resolution, and coverage needed to characterize the processes controlling its buildup in the atmosphere. The OCO-2 project uses the LEOStar-2 spacecraft that carries a single instrument. It incorporates three high-resolution spectrometers that make coincident measurements of reflected sunlight in the near-infrared CO2 near 1.61 and 2.06 μm and in molecular oxygen (O2) A-Band at 0.76 μm . Each band has 1016 spectral elements. This product contains the position and velocity of the spacecraft for each orbit. It is generated using the following input data: + APID 20 telemetry + Orbit Boundary File It is essential in generating the Geolocations of the science data. This is the retrospective processing where the calibration data is estimated from the full timeseries of data (before, during, and after the measurements), and is expected to be of slightly higher quality.

Summary

Description

The Version-3 Aura/OMI Pixel Corner Product, OMPIXCOR, is now available from the NASA Goddard Earth Sciences Data and Information Services Center (GES DISC)for the public access.(http://disc.gsfc.nasa.gov/Aura/OMI/ompixcor_v003.shtml ) (The shortname for this Level-2 OMI product is OMPIXCOR) The algorithm lead for this product is the US OMI scientists Dr. Thomas Kurosu (tkurosu@cfa.harvard.edu) from the Harvard-Smithsonian Center, Cambridge, MA. The OMPIXCOR product contains ground locations of the OMI pixel corners in the global scanning mode and other ancillary informations. OMPIXCOR files are stored in EOS Hierarchical Data Format (HDF-EOS5). Each file contains data from the day lit portion of an orbit (~53 minutes) . There are approximately 14 orbits per day. The average file size for the OMPIXCOR data product is about 5 Mbytes.

Summary

Description

The Version-3 Aura/OMI Pixel Corner Product, OMPIXCOR, is now available from the NASA Goddard Earth Sciences Data and Information Services Center (GES DISC)for the public access.(http://disc.gsfc.nasa.gov/Aura/OMI/ompixcor_v003.shtml ) (The shortname for this Level-2 OMI product is OMPIXCOR) The algorithm lead for this product is the US OMI scientists Dr. Thomas Kurosu (tkurosu@cfa.harvard.edu) from the Harvard-Smithsonian Center, Cambridge, MA. The OMPIXCOR product contains ground locations of the OMI pixel corners in the global scanning mode and other ancillary informations. OMPIXCOR files are stored in EOS Hierarchical Data Format (HDF-EOS5). Each file contains data from the day lit portion of an orbit (~53 minutes) . There are approximately 14 orbits per day. The average file size for the OMPIXCOR data product is about 5 Mbytes.

Summary

Description

The Orbiting Carbon Observatory is the first NASA mission designed to collect space-based measurements of atmospheric carbon dioxide with the precision, resolution, and coverage needed to characterize the processes controlling its buildup in the atmosphere. The OCO-2 project uses the LEOStar-2 spacecraft that carries a single instrument. It incorporates three high-resolution spectrometers that make coincident measurements of reflected sunlight in the near-infrared CO2 near 1.61 and 2.06 μm and in molecular oxygen (O2) A-Band at 0.76 μm . Each band has 1016 spectral elements. This product contains the position and velocity of the spacecraft for each orbit. It is generated using the following input data: + APID 20 telemetry + Orbit Boundary File It is essential in generating the Geolocations of the science data. In the reprocessing collection (V6R), the calibration data is estimated from the full timeseries of data (before, during, and after the measurements), and is expected to be of slightly higher quality.

Summary

Description

The Orbiting Carbon Observatory is the first NASA mission designed to collect space-based measurements of atmospheric carbon dioxide with the precision, resolution, and coverage needed to characterize the processes controlling its buildup in the atmosphere. The OCO-2 project uses the LEOStar-2 spacecraft that carries a single instrument. It incorporates three high-resolution spectrometers that make coincident measurements of reflected sunlight in the near-infrared CO2 near 1.61 and 2.06 μm and in molecular oxygen (O2) A-Band at 0.76 μm . Each band has 1016 spectral elements. This product contains the position and velocity of the spacecraft for each orbit. It is generated using the following input data: + APID 20 telemetry + Orbit Boundary File It is essential in generating the Geolocations of the science data.

Summary

Description

The Version-3 Aura-OMI Formaldehyde Product OMHCHOG is now available (http://disc.gsfc.nasa.gov/Aura/OMI/omhchog_v003.shtml) from the NASA Goddard Earth Sciences Data and Information Services Center (GES DISC) for the public access. (The shortname for this Level-2G OMI total column Formaldehyde product is OMHCHOG) The algorithm leads for this product are the US OMI scientists Dr. Kelly Chance (kchance@cfa.harvard.edu) and Dr. Thomas Kurosu (tkurosu@cfa.harvard.edu) from the Harvard-Smithsonian Center, Cambridge, MA. OMHCHOG data product is a special Level-2 Global Gridded Product where pixel level data are binned into 0.25x0.25 degree grids. It contains data for all L2 scenes that have observation time betweeen UTC times of 00:00:00 and 23:59:59.9999. All data pixels that fall in a grid box are saved without Averaging (third dimension provides indexing for the data points in each small grid). Scientist can apply data filtering scheme of their choice and create Level-3 global gridded products. The GES DISC developed interactive tool Giovanni( http://giovanni.gsfc.nasa.gov/ ) provides on-line web based capabilities to browse and explore the Level-2G data. The OMHCHOG data product contains almost all parameters (e.g. total vertical column HCHO, standard erros, quality flags, geolocation and ancillary information) that are contained in the OMHCHO product. OMHCHOG data are stored in EOS Hierarchical Data Format (HDF-EOS5). Each file contains data from the day lit portions of 14 to 15 orbits that cover the globe in a day. The average file size for the OMGCHOG data product is about 55 Mbytes. A list of tools for browsing and extracting data from these files can be found at: http://disc.gsfc.nasa.gov/Aura/tools.shtml A short Readme Document giving brief algorithm description and documents containing known data quality related issues for the OMHCHO product (the source of OMHCHOG data)are available from the GES DISC site( http://disc.gsfc.nasa.gov/Aura/OMI/omhchog_v003.shtml )

Summary

Description

The Version-3 Aura/OMI Pixel Corner Product, OMPIXCOR, is now available from the NASA Goddard Earth Sciences Data and Information Services Center (GES DISC)for the public access.(http://disc.gsfc.nasa.gov/Aura/OMI/ompixcor_v003.shtml ) (The shortname for this Level-2 OMI product is OMPIXCOR) The algorithm lead for this product is the US OMI scientists Dr. Thomas Kurosu (tkurosu@cfa.harvard.edu) from the Harvard-Smithsonian Center, Cambridge, MA. The OMPIXCOR product contains ground locations of the OMI pixel corners in the global scanning mode and other ancillary informations. OMPIXCOR files are stored in EOS Hierarchical Data Format (HDF-EOS5). Each file contains data from the day lit portion of an orbit (~53 minutes) . There are approximately 14 orbits per day. The average file size for the OMPIXCOR data product is about 5 Mbytes.