International Satellite Cloud Climatology Project (ISCCP) Stage D1 3-Hourly Cloud Products - Revised Algorithm in Hierarchical Data Format

Description

ISCCP_D1_1 is the International Satellite Cloud Climatology Project (ISCCP) Stage D1 3-Hourly Cloud Products - Revised Algorithm data set in Hierarchical Data Format. This data set contains 3-hourly, 280 KM equal-area grid data from various polar and geostationary satellites. The Gridded Cloud Product contents are spatial averages of DX quantities and statistical summaries, including properties of cloud types. Satellites are merged into a global grid. Atmosphere and surface properties from TOVS are appended. Data collection for this data set is complete. ISCCP, the first project of the World Climate Research Program (WCRP), was established in 1982 (WMO-35 1982, Schiffer and Rossow 1983) to: produce a global, reduced resolution, calibrated and normalized radiance data set containing basic information on the properties of the atmosphere from which cloud parameters can be derived; stimulate and coordinate basic research on techniques for inferring the physical properties of clouds from the condensed radiance data set and to apply the resulting algorithms to derive and validate a global cloud climatology for improving the parameterization of clouds in climate models; and promote research using ISCCP data that contributes to improved understanding of the Earth's radiation budget and hydrological cycle. Starting in 1983 an international group of institutions collected and analyzed satellite radiance measurements from up to five geostationary and two polar orbiting satellites to infer the global distribution of cloud properties and their diurnal, seasonal and interannual variations. The primary focus of the first phase of the project (1983-1995) was the elucidation of the role of clouds in the radiation budget (top of the atmosphere and surface). In the second phase of the project (1995 onward) the analysis also concerns improving understanding of clouds in the global hydrological cycle. The ISCCP analysis combined satellite-measured radiances (Stage B3 data, Schiffer and Rossow 1985), Rossow et al. 1987) with the TOVS atmospheric temperature-humidity and ice/snow correlative data sets to obtain information about clouds and the surface. The analysis method first determined the presence of absence of clouds in each individual image pixel and retrieves the radiometric properties of the cloud for each cloudy pixel and of the surface for each clear pixel. The pixel analysis was performed separately for each satellite radiance data set and the results were reported in the Stage DX data product, which had a nominal resolution of 30 km and 3 hours. The Stage D1 product was produced by summarizing the pixel-level results every 3 hours on an equal-area map with 280 km resolution and merging the results from separate satellites with the atmospheric and ice/snow data sets to produce global coverage at each time. The Stage D2 data product was produced by averaging the Stage D1 data over each month, first at each of the eight three hour time intervals and then over all time intervals.

Resources

Name Format Description Link
21 ISCCP project home page https://isccp.giss.nasa.gov/
21 ISCCP Data Products List https://isccp.giss.nasa.gov/products/products.html
21 DOI data set landing page for ISCCP_D1_1 https://doi.org/10.5067/ISCCP/D1
33 ISCCP D1 and D2 Langley Data Center Data Set Document https://asdc.larc.nasa.gov/documents/isccp/guide/base_isccp_d1_d2_dataset.pdf
21 How to cite ASDC data https://asdc.larc.nasa.gov/citing-data
21 ISCCP D1 Data Set Readme https://asdc.larc.nasa.gov/documents/isccp/readme/readme_isccp_d1.txt
21 Readme to read ISCCP D1 HDF Formatted Data Files - Direct File Download (.c) https://asdc.larc.nasa.gov/documents/isccp/read_software/isccp_d1_read.c
21 Program to read D1 HDF format files produced by ISCCP - Direct File Download (.f) https://asdc.larc.nasa.gov/documents/isccp/read_software/isccp_d1_read.f
21 NASA Earth Observatory Article: Stars, Clouds, Crops https://earthobservatory.nasa.gov/features/StarsCloudsCrops
21 NASA Earth Observatory Article: Shadows of Doubt - Monitoring Cloud Effects https://earthobservatory.nasa.gov/features/ShadowsDoubt
33 ISCCP Project/Campaign Document for the Langley DAAC https://asdc.larc.nasa.gov/documents/isccp/guide/isccp_project.pdf
21 EOS Aura Science Team Meeting AGENDA, August 27 - August 29, 2019 Pasadena CA, USA https://avdc.gsfc.nasa.gov/Overview/
21 ASDC Direct Data Download for ISCCP_D1_1 https://asdc.larc.nasa.gov/data/ISCCP/D1/
21 OPeNDAP data access for ISCCP_D1_1 https://opendap.larc.nasa.gov/opendap/ISCCP/D1/contents.html
21 ASDC Data and Information for ISCCP https://asdc.larc.nasa.gov/project/ISCCP
21 Search results for publications that cite this dataset by its DOI. https://scholar.google.com/scholar?q=10.5067%2FISCCP%2FD1
21 NCAR UCAR Climate Data Guide https://climatedataguide.ucar.edu/
21 Goddard's Panoply - plots geo-gridded data from netCDF, HDF, GRIB datasets. https://www.giss.nasa.gov/tools/panoply/
21 Earth Observing System Data and Information System (EOSDIS) Article: Global Cloud Process Studies in the Context of Decadal Climate Variability: Enhancement and Continuation of Data Analysis for the International Satellite Cloud Climatology Project (ISCCP) https://earthdata.nasa.gov/esds/competitive-programs/measures/data-analysis-for-isccp
21 ISCCP New Algorithm: Summary of Changes https://isccp.giss.nasa.gov/newalg.html
21 ISCCP Known and Fixed Errors in Data Products https://isccp.giss.nasa.gov/errors.html
21 Publications for ISCCP https://isccp.giss.nasa.gov/docs/documents.html
21 Earthdata Search for ISCCP_D1_1 (NASA Application to search, discover, visualize, refine, and access NASA Earth Observation data) https://search.earthdata.nasa.gov/search/granules?p=C2146773048-LARC_ASDC
21 Earth Observing System Data and Information System (EOSDIS) Article: "But the winds... but the spaces" By Annette Varani https://earthdata.nasa.gov/learn/sensing-our-planet/but-the-winds-but-the-spaces

Tags

  • atmospheric-radiation
  • snow-ice
  • atmospheric-water-vapor
  • atmosphere
  • cryosphere
  • atmospheric-temperature
  • terrestrial-hydrosphere
  • atmospheric-chemistry
  • atmospheric-pressure
  • clouds
  • earth-science

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