TES/Aura L2 O3 Limb Special Observation V006

Description

TL2O3LS_6 is the Tropospheric Emission Spectrometer (TES)/Aura Level 2 O3 Limb Special Observation Version 6 data product. It consists of information for one molecular species for an entire Global Survey or Special Observation. TES was an instrument aboard NASA's Aura satellite and was launched from California on July 15, 2004. Data collection for TES is complete. 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) were also provided. L2 modeled spectra were evaluated using radiative transfer modeling algorithms. The process, referred to as retrieval, compared observed spectra to the modeled spectra and iteratively updated the atmospheric parameters. L2 standard product files included information for one molecular species (or temperature) for an entire global survey or special observation run. A global survey consisted of a maximum of 16 consecutive orbits. Nadir observations, which point directly to the surface of the Earth are different from limb observations, which are pointed at various off-nadir angles into the atmosphere. Nadir and limb observations were added to separate L2 files, and a single ancillary file was composed of data that are common to both nadir and limb files. A Nadir sequence within the TES Global Survey was 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 only used a single set of filter mix. A Global Survey consisted of observations along 16 consecutive orbits at the start of a two day cycle, over which 3,200 retrievals were performed. Each observation was the input for retrievals of species Volume Mixing Ratios (VMRs), 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 reported information in a swath format conforming to the HDF-EOS Aura File Format Guidelines. Each Swath object was 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 could have had a variable number of observations depending upon the Global Survey configuration and whether averaging was employed. Also, missing or bad retrievals were not reported. Further, observations were occasionally scheduled on non-global survey days. In general they were measurements made for validation purposes or with highly focused science objectives. Those non-global survey measurements were referred to as “special observations” The organization of data within the Swath object was based on a superset of the Upper Atmosphere Research Satellite (UARS) pressure levels used to report concentrations of trace atmospheric gases. The reporting grid was the same pressure grid used for modeling. There were 67 reporting levels from 1211.53 hPa, which allowed for very high surface pressure conditions, to 0.1 hPa, about 65 km. In addition, the products reported values directly at the surface when possible or at the observed cloud top level. Thus in the Standard Product files, each observation could potentially contain estimates for the concentration of a particular molecule at 67 different pressure levels within the atmosphere. However, for most retrieved profiles, the highest pressure levels were not observed due to a surface at lower pressure or cloud obscuration. For pressure levels corresp

Resources

Name Format Description Link
21 Report of TES Level 2 Global Survey Products Available from the ASDC https://l0dup05.larc.nasa.gov/public/cgi-bin/DUE/tes_L2GlbSrvy.cgi
21 Search results for publications that cite this dataset by its DOI. https://scholar.google.com/scholar?q=10.5067%2FAURA%2FTES%2FTESO3LS_L2.006
21 TES project home page https://tes.jpl.nasa.gov/
21 NASA EOS ATB Documents: TES https://eospso.gsfc.nasa.gov/atbd-category/53
21 Report of TES Level 2 Limb Products Available from the ASDC https://l0dup05.larc.nasa.gov/public/cgi-bin/DUE/tes_L2Limb.cgi
21 How to cite ASDC data https://asdc.larc.nasa.gov/citing-data
33 Aura-TES L2 Products: Version 6 Data Quality Description https://asdc.larc.nasa.gov/documents/tes/quality_summaries/L2_products_V006.pdf
45 TES Level 2 Read Software Package - Direct File Download (.tar) https://asdc.larc.nasa.gov/documents/tes/read_software/TES_L2_ReadSoftware.tar
21 HDFView Overview and Download https://portal.hdfgroup.org/display/HDFVIEW/HDFView
33 TES Langley ASDC Project Guide https://asdc.larc.nasa.gov/documents/tes/guide/tes_project.pdf
21 NASA Earthdata Forum - TES Project Specific Forum https://forum.earthdata.nasa.gov/app.php/tag/TES
21 Earthdata Search for TL2O3LS_6 (NASA Application to search, discover, visualize, refine, and access NASA Earth Observation data) https://search.earthdata.nasa.gov/search/granules?p=C191856330-LARC
21 DOI data set landing page for TL2O3LS_6 https://doi.org/10.5067/AURA/TES/TESO3LS_L2.006
21 OPeNDAP data access for TL2O3LS_6 https://opendap.larc.nasa.gov/opendap/TES/TL2O3LS.006/contents.html
33 Aura-TES L2 Products: Version 2 Data Quality Description https://asdc.larc.nasa.gov/documents/tes/quality_summaries/L2_products_v002.pdf
21 TES Publications https://tes.jpl.nasa.gov/science/publications/
33 TES Level 2 (L2) Data User’s Guide (Up to & including Version 6 data) https://asdc.larc.nasa.gov/documents/tes/guide/TESDataUsersGuideV6_0_Nov5_2013_FV-dhs.pdf
21 ASDC Direct Data Download for TL2O3LS_6 https://asdc.larc.nasa.gov/data/TES/TL2O3LS.006/
21 Report of TES Level 2 Special Observation Products Available from the ASDC https://l0dup05.larc.nasa.gov/public/cgi-bin/DUE/tes_L2SpecObs.cgi
33 TES Level 2 (L2) Data User's Guide (Up to & including Version 8 data) https://asdc.larc.nasa.gov/documents/tes/guide/TESDataUsersGuideV8_0_March_27_2020_FV-8_rh.pdf
21 Basic IDL Tools for extraction information from TES L2 HDF Product files https://asdc.larc.nasa.gov/documents/tes/readme/README_L2_ReadSoftware.txt
33 TES Level 2 Versioning - Level 2 Standard and Special Observation Products https://asdc.larc.nasa.gov/documents/tes/readme/level_2_std.pdf

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  • atmosphere
  • atmospheric-chemistry
  • air-quality
  • earth-science

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