{"@type": "dcat:Dataset", "accessLevel": "public", "bureauCode": ["026:00"], "contactPoint": {"@type": "vcard:Contact", "fn": "JOHN GILLE", "hasEmail": "mailto:gille@ucar.edu"}, "description": "The \"HIRDLS/Aura Level 3 Nitrogen Dioxide (NO2) Zonal Fourier Coefficients\" version 7 data product (H3ZFCNO2) contains the entire mission (~3 years) of HIRDLS data expressed as zonal Fourier coefficients in 1 degree latitude bands from -64 to 80 degrees at 121 pressure levels. The coefficients are computed from the HIRDLS Level 2 profiles with a Kalman filter approach using both forward and backward passes in time. Expressed as the mean and up to 7 sine and cosine coefficients (4 waves for ascending and descending, 7 waves for combined), these coefficients may be used to compute values at any longitude. The data are provided on a pressure grid with 24 levels per decade, corresponding to about 1 km vertical resolution. The useful vertical range of the data is 100 to 5.1 hPa. The precision values are given by the root-mean square of the differences between the estimated fields and the input data.\n\nThe data are stored in the version 5 Hierarchical Data Format for the Earth Observing System (HDF-EOS5), which is an extension of the HDF5 format. Each file contains a zonal object with data for the entire mission with separate data fields for ascending (daytime), descending (nighttime), and combined orbit node.", "distribution": [{"@type": "dcat:Distribution", "description": "Access the data via HTTPS.", "downloadURL": "https://acdisc.gesdisc.eosdis.nasa.gov/data/Aura_HIRDLS_Level3/H3ZFCNO2.007/", "format": "HTML", "mediaType": "text/html", "title": "Download this dataset through a directory map"}, {"@type": "dcat:Distribution", "description": "Access the data via the OPeNDAP protocol.", "downloadURL": "https://acdisc.gesdisc.eosdis.nasa.gov/opendap/HDF-EOS5/Aura_HIRDLS_Level3/H3ZFCNO2.007/HIRDLS-Aura_L3ZFCNO2_v07-00-20-c01_2005d022-2008d077.he5.html", "format": "HTML", "mediaType": "text/html", "title": "Use OPeNDAP to access the dataset's data"}, {"@type": "dcat:Distribution", "description": "Access the dataset landing page from the GES DISC website.", "downloadURL": "https://disc.gsfc.nasa.gov/datacollection/H3ZFCNO2_007.html", "format": "HTML", "mediaType": "text/html", "title": "This dataset's landing page"}, {"@type": "dcat:Distribution", "description": "List of publications.", "downloadURL": "https://docserver.gesdisc.eosdis.nasa.gov/repository/Mission/HIRDLS/3.3_Product_Documentation/3.3.6_Product_Application/All_HIRDLS_Papers_26June2013.pdf", "format": "PDF", "mediaType": "application/pdf", "title": "View this dataset's publications"}, {"@type": "dcat:Distribution", "description": "README and Data Quality document", "downloadURL": "https://docserver.gesdisc.eosdis.nasa.gov/repository/Mission/HIRDLS/3.3_Product_Documentation/3.3.5_Product_Quality/HIRDLS-DQD_V7.pdf", "format": "PDF", "mediaType": "application/pdf", "title": "View this dataset's read me document"}, {"@type": "dcat:Distribution", "description": "Search results for publications that cite this dataset by its DOI.", "downloadURL": "https://scholar.google.com/scholar?q=10.5067%2FAura%2FHIRDLS%2FDATA309", "format": "HTML", "mediaType": "text/html", "title": "Google Scholar search results"}, {"@type": "dcat:Distribution", "description": "Use the Earthdata Search to find and retrieve data sets across multiple data centers.", "downloadURL": "https://search.earthdata.nasa.gov/search?q=H3ZFCNO2_007", "format": "HTML", "mediaType": "text/html", "title": "Download this dataset through Earthdata Search"}, {"@type": "dcat:Distribution", "downloadURL": "https://docserver.gesdisc.eosdis.nasa.gov/public/project/Images/H3ZFCNO2_007.png", "format": "PNG", "mediaType": "image/png", "title": "Get a related visualization"}], "identifier": "C1251101003-GES_DISC", "issued": "2013-05-31", "keyword": ["atmosphere", "atmospheric-chemistry", "earth-science"], "landingPage": "https://doi.org/10.5067/Aura/HIRDLS/DATA309", "language": ["en-US"], "modified": "2025-03-31", "programCode": ["026:001"], "publisher": {"@type": "org:Organization", "name": "NASA/GSFC/SED/ESD/GCDC/GESDISC"}, "spatial": "-180.0 -64.0 180.0 80.0", "temporal": "2005-01-22T00:00:00Z/2008-03-17T23:59:59.999Z", "theme": ["Aura", "geospatial"], "title": "HIRDLS/Aura Level 3 Nitrogen Dioxide (NO2) 1deg Lat Zonal Fourier Coefficients V007 (H3ZFCNO2) at GES DISC"}