USGS EROS Archive - Landsat - Atmospheric Auxiliary Data - NCEP/NCAR Reanalysis C2

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Dataset Citation

Please cite this dataset in the following manner: 

Earth Resources Observation and Science (EROS) Center. (2021). NCEP/NCAR, Collection 2 [dataset]. U.S. Geological Survey. https://doi.org/10.5066/P9Y9CG3P

These data are available for users wanting to generate custom Level-2 products using the Collection 2 surface reflectance and surface temperature algorithms. It is not necessary for users to download the atmospheric auxiliary data for use with Collection 2 Level-2 products. 

The USGS repackages information from three source Reanalysis product files into a daily HDF file that contains Scientific Data Sets  (SDSs) for surface pressure (“slp”), precipitable water (“pr_wtr”), and air temperature (“air”), stored as floating-point values. These global products are 2.5° x 2.5° lat/long grids from 90° N to 90° S, and 0° E to 357.5° E. Each grid position contains four daily values from 0Z, 6Z, 12Z, and 18Z. The repackaged file also contains “lat” and “lon” SDSs that contain the latitude and longitude value along each grid axis.

Additional Information

• Landsat Collection 2 Atmospheric Auxiliary Home Page
• Landsat Atmospheric Auxiliary Data - Data Format Control Book (DFCB) 

Access Data

Use EarthExplorer to search and download the NCEP/NCAR Reanalysis C2 Subset Product. The data are located under the Landsat category, Atmospheric Auxiliary Data, and listed as NCEP/NCAR Reanalysis C2 Subset.

Data Citation History

The preferred citation for this dataset was revised in 2024 to improve accuracy and alignment with USGS Fundamental Science Practices. The dataset digital object identifier (DOI) and version did not change. 

Please cite this dataset in the following manner: 

Earth Resources Observation and Science (EROS) Center. (2021). NCEP/NCAR, Collection 2 [dataset]. U.S. Geological Survey. https://doi.org/10.5066/P9Y9CG3P

The previously used citation shown below is provided here for historical reference only:
U.S. Geological Survey (USGS) Earth Resources Observation And Science (EROS) Center. (2021). NCEP/NCAR Reanalysis C2 Subset [dataset]. U.S. Geological Survey. https://doi.org/10.5066/P9Y9CG3P