Popis

This data set contains Carbon Dioxide (CO2) column averaged dry air mole fraction for all soundings for which retrieval was attempted. These are the highest-level products made available by the ACOS Project, from algorithm build version 2.9 The GOSAT team at JAXA produces GOSAT TANSO-FTS Level 1B (L1B) data products for internal use and for distribution to collaborative partners, such as ESA and NASA. These calibrated products are augmented by the ACOS Project with additional geolocation information and further corrections. These ACOS Level 1B products (with calibrated radiances and geolocation) are the input to the ACOS Level 2 production process. Even though the GES DISC is not publicly distributing Level 1B ACOS products, it should be known that changes in this version are affecting both Level 1B and Level 2 data. An important enhancement in Level1B will address the degradation in the number of quality-passed soundings in v2.8. Elimination of many systematic biases, and better agreement with TCCON (Total Carbon Column Observing Network), is expected in Level 2 retrievals. The key changes to the L2 algorithm include scaling the O2-A band spectroscopy (reducing XCO2 bias by 4 or 5 ppm); using interpolation with the instrument lineshape [ ILS ] (reducing XCO2 bias by 1.5 ppm); and fitting a zero level offset to the A-band. Users have to also carefully familiarize themselves with the disclaimer in the new documentation. An important element to note are the updates on data screening. Although a Master Quality Flag is provided in the data product, further analysis of a larger set of data has allowed the science team to provide an updated set of screening criteria. These are listed in the data user's guide, and are recommended instead of the Master Quality Flag. Lastly, users should continue to carefully observe and weigh information from three important flags: sounding_qual_flag - quality of input data provided to the retrieval processing outcome_flag - retrieval quality based upon certain internal thresholds (not thoroughly evaluated) master_quality_flag - four possible values: "Good", "Caution" and "Bad", and "Failed", as determined from other flags in the L2 product The short name for this data type is ACOS_L2S.

Obecné informace

• Dokumentace

  http://catalog.data.gov/dataset/acos-gosat-tanso-fts-level-2-full-physics-standard-product-v2-9 Do you think this data is incorrect? Let us know

• Poskytovatel

  National Aeronautics and Space Administration Do you think this data is incorrect? Let us know

Právní informace

• Právní prohlášení

  http://catalog.data.gov/dataset/acos-gosat-tanso-fts-level-2-full-physics-standard-product-v2-9 Do you think this data is incorrect? Let us know

• Under which licence can people outside the US reuse this data?

  Creative Commons CCZero Do you think this data is incorrect? Let us know

• Obsah chráněný autorským právem

  yes, and the rights are all held by the same person or organisation Do you think this data is incorrect? Let us know

• Licence obsahu

  Creative Commons CCZero Do you think this data is incorrect? Let us know

• Strojově čitelná data právního prohlášení

  licence k datům Do you think this data is incorrect? Let us know

• Ochrana soukromí

  nehraje roli, data se netýkají fyzických osob Do you think this data is incorrect? Let us know

Praktické informace

• Relevantní datové katalogy

  http://catalog.data.gov/organization/nasa-gov Do you think this data is incorrect? Let us know

• Zastarávání

  data časem zastarají, ale mají časové razítko Do you think this data is incorrect? Let us know

• Zálohování dat

  data jsou zálohována offsite Do you think this data is incorrect? Let us know

Technické informace

• URL datové sady

  http://mirador.gsfc.nasa.gov/cgi-bin/mirador/collectionlist.pl?keyword=ACOS_L2S Do you think this data is incorrect? Let us know

Sociální informace

• Strojově čitelná metadata

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  hlavní URL Do you think this data is incorrect? Let us know

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• Strojově čitelná metadata

  četnost aktualizací Do you think this data is incorrect? Let us know

• Strojově čitelná metadata

  poskytovatel Do you think this data is incorrect? Let us know

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  hlavní témata Do you think this data is incorrect? Let us know

• Strojově čitelná metadata

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• Strojově čitelná metadata

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• Strojově čitelná metadata k distribucím

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• Strojově čitelná metadata k distribucím

  typ média Do you think this data is incorrect? Let us know

• Kontakty

  http://catalog.data.gov/dataset/acos-gosat-tanso-fts-level-2-full-physics-standard-product-v2-9 Do you think this data is incorrect? Let us know

• Zpětná vazba k publikovaným datovým sadám

  http://www.data.gov/issue/?media_url=http://catalog.data.gov/dataset/acos-gosat-tanso-fts-level-2-full-physics-standard-product-v2-9 Do you think this data is incorrect? Let us know