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International Satellite Cloud Climatology Project (ISCCP) - H Series

ISCCP began in 1982 as a project to develop a climatology of cloud radiative properties. Since then it has provided global cloud information to thousands. The legacy dataset - ISCCP D series - production at NASA GISS ended in 2009. Since then, NCEI worked with the ISCCP Principal Investigator, William Rossow, to transition the ISCCP processing to NOAA. The new processing is now available as the ISCCP H series.

What Is New With ISCCP H?

There were many improvements made in the ISCCP H-series of products. These include:

  • Higher Resolution Input Satellite Data - ISCCP uses input data from full-resolution AVHRR Global Area Coverage (GAC) and ~10 km geostationary imagery—an increase from ~30 km in the ISCCP D-series.
  • Higher Resolution Gridded Products  - The higher resolution inputs allow 1 degree gridded products.
  • Expanded Period of Record  - The H series CDR expands the period of record from July 1983 through June 2017. Additional updates are planned to continue. Interim Climate Data Record - Available for data covering the period from July 2017 through December 2018. The ICDR data product can be accessed here.
  • Interim Climate Data Record - Available for data covering the period from July 2017 through December 2018. The ICDR data product can be accessed here.
  • Temporally Stable Atmospheric Profiles - Neural network profiles from the HIRS provide stable retrievals during the period of record.
  • New Output Product - Radiances and cloud information are available at pixel-level - 10 km - globally every 3 hours.
  • Output Format is Network Common Data Form (netCDF).

History

NASA and NOAA - in partnership with many other agencies worldwide - have been operationally collecting and processing data for ISCCP since July 1983. The legacy D series is still documented at the NASA ISCCP site.