TES/Aura L2 Ozone Nadir V007

TL2O3N_7 is the Tropospheric Emission Spectrometer (TES)/Aura Level 2 Ozone Nadir Version 7 data product. It consists of information for one molecular species for an entire Global Survey or Special Observation. TES Level 2 data contain retrieved species (or temperature) profiles at the observation targets and the estimated errors. The geolocation, quality and other data (e.g., surface characteristics for nadir observations) are also provided. L2 modeled spectra are evaluated using radiative transfer modeling algorithms. The process, referred to as retrieval, compares observed spectra to the modeled spectra and iteratively updates the atmospheric parameters. L2 standard product files include information for one molecular species (or temperature) for an entire global survey or special observation run. A global survey consists of a maximum of 16 consecutive orbits. Nadir and limb observations are in separate L2 files, and a single ancillary file is composed of data that are common to both nadir and limb files. A Nadir sequence within the TES Global Survey is a fixed number of observations within an orbit for a Global Survey. Prior to April 24, 2005, it consisted of two low resolution scans over the same ground locations. After April 24, 2005, Global Survey data consisted of three low resolution scans. The Nadir standard product consists of four files, where each file is composed of the Global Survey Nadir observations from one of four focal planes for a single orbit, i.e. 72 orbit sequences. The Global Survey Nadir observations currently only use a single set of filter mix. A Limb sequence within the TES Global Survey is three high-resolution scans over the same limb locations. The Limb standard product will consist of four files, where each file will be composed of the Global Survey Limb observations from one of four focal planes for a single orbit, i.e. 72 orbit sequences. The Global Survey Limb observations use a repeating sequence of filter wheel positions. Special Observations can only be scheduled during the 9 or 10 orbit gaps in the Global Surveys, and are conducted in any of three basic modes: stare, transect, step-and-stare. The mode used depends on the science requirement. See http://tes.jpl.nasa.gov/instrument/special observations/ for details. A Global Survey consists of observations along 16 consecutive orbits at the start of a two day cycle, over which 4,608 retrievals are performed (1,152 nadir retrievals and 1,152 retrievals in time ordered sequence for each limb observation). Each observation is the input for retrievals of species Volume Mixing Ratios (VMR), temperature profiles, surface temperature and other data parameters with associated pressure levels, precision, total error, vertical resolution, total column density and other diagnostic quantities. Each TES Level 2 standard product reports information in a swath format conforming to the HDF-EOS Aura File Format Guidelines. Each Swath object is bounded by the number of observations in a global survey and a predefined set of pressure levels representing slices through the atmosphere. Each standard product can have a variable number of observations depending upon the Global Survey configuration and whether averaging is employed. Also, missing or bad retrievals are not reported. Each limb observation Limb 1, Limb 2 and Limb 3, are processed independently. Thus, each limb standard product consists of three sets where each set consist of 1,152 observations. For TES, the swath object represents one of these sets. Thus, each limb standard product consists of three swath objects, one for each observation, Limb 1, Limb 2, and Limb 3. The organization of data within the Swath object is based on a superset of the UARS pressure levels used to report concentrations of trace atmospheric gases. The reporting grid is the same pressure grid used for modeling. There are 67 reporting levels from 1211.53 hPa, which allows for very high surface pressure conditions, to 0.1 hPa, a

Data and Resources

Field Value
accessLevel public
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citation 2017-04-06. Archived by National Aeronautics and Space Administration, U.S. Government, NASA/LARC/SD/ASDC. https://doi.org/10.5067/AURA/TES/TL2O3N_L2.007. http://eosweb.larc.nasa.gov/project/tes/tes_table.
identifier C1331182557-LARC
issued 2015-08-27
landingPage https://doi.org/10.5067/AURA/TES/TL2O3N_L2.007
language {en-US}
metadata_type geospatial
modified 2019-06-19
programCode {026:001}
publisher NASA/LARC/SD/ASDC
resource-type Dataset
source_datajson_identifier true
source_hash e3ab16730ae30e52e6ee9e7168be2ea1c52b1d07
source_schema_version 1.1
spatial {"type": "Polygon", "coordinates": [[[-180.0, -90.0], [180.0, -90.0], [180.0, 90.0], [-180.0, 90.0], [-180.0, -90.0]]]}
temporal 2004-08-22T00:00:00Z/2018-01-22T23:59:59Z
theme {TES,geospatial}
Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • air-quality
  • amerigeo
  • amerigeoss
  • atmosphere
  • atmospheric-chemistry
  • ckan
  • earth-science
  • geo
  • geoss
  • national
  • north-america
  • united-states
isopen False
license_id notspecified
license_title License not specified
maintainer SCOTT GLUCK
maintainer_email scott.gluck@jpl.nasa.gov
metadata_created 2025-11-22T21:27:49.346277
metadata_modified 2025-11-22T21:27:49.346281
notes TL2O3N_7 is the Tropospheric Emission Spectrometer (TES)/Aura Level 2 Ozone Nadir Version 7 data product. It consists of information for one molecular species for an entire Global Survey or Special Observation. TES Level 2 data contain retrieved species (or temperature) profiles at the observation targets and the estimated errors. The geolocation, quality and other data (e.g., surface characteristics for nadir observations) are also provided. L2 modeled spectra are evaluated using radiative transfer modeling algorithms. The process, referred to as retrieval, compares observed spectra to the modeled spectra and iteratively updates the atmospheric parameters. L2 standard product files include information for one molecular species (or temperature) for an entire global survey or special observation run. A global survey consists of a maximum of 16 consecutive orbits. Nadir and limb observations are in separate L2 files, and a single ancillary file is composed of data that are common to both nadir and limb files. A Nadir sequence within the TES Global Survey is a fixed number of observations within an orbit for a Global Survey. Prior to April 24, 2005, it consisted of two low resolution scans over the same ground locations. After April 24, 2005, Global Survey data consisted of three low resolution scans. The Nadir standard product consists of four files, where each file is composed of the Global Survey Nadir observations from one of four focal planes for a single orbit, i.e. 72 orbit sequences. The Global Survey Nadir observations currently only use a single set of filter mix. A Limb sequence within the TES Global Survey is three high-resolution scans over the same limb locations. The Limb standard product will consist of four files, where each file will be composed of the Global Survey Limb observations from one of four focal planes for a single orbit, i.e. 72 orbit sequences. The Global Survey Limb observations use a repeating sequence of filter wheel positions. Special Observations can only be scheduled during the 9 or 10 orbit gaps in the Global Surveys, and are conducted in any of three basic modes: stare, transect, step-and-stare. The mode used depends on the science requirement. See http://tes.jpl.nasa.gov/instrument/special observations/ for details. A Global Survey consists of observations along 16 consecutive orbits at the start of a two day cycle, over which 4,608 retrievals are performed (1,152 nadir retrievals and 1,152 retrievals in time ordered sequence for each limb observation). Each observation is the input for retrievals of species Volume Mixing Ratios (VMR), temperature profiles, surface temperature and other data parameters with associated pressure levels, precision, total error, vertical resolution, total column density and other diagnostic quantities. Each TES Level 2 standard product reports information in a swath format conforming to the HDF-EOS Aura File Format Guidelines. Each Swath object is bounded by the number of observations in a global survey and a predefined set of pressure levels representing slices through the atmosphere. Each standard product can have a variable number of observations depending upon the Global Survey configuration and whether averaging is employed. Also, missing or bad retrievals are not reported. Each limb observation Limb 1, Limb 2 and Limb 3, are processed independently. Thus, each limb standard product consists of three sets where each set consist of 1,152 observations. For TES, the swath object represents one of these sets. Thus, each limb standard product consists of three swath objects, one for each observation, Limb 1, Limb 2, and Limb 3. The organization of data within the Swath object is based on a superset of the UARS pressure levels used to report concentrations of trace atmospheric gases. The reporting grid is the same pressure grid used for modeling. There are 67 reporting levels from 1211.53 hPa, which allows for very high surface pressure conditions, to 0.1 hPa, a
num_resources 30
num_tags 12
title TES/Aura L2 Ozone Nadir V007