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Please note that ISCCP data processing is now performed at NOAA/NCEI.
Please visit the NOAA/NCEI website for access to ISCCP H data products and other up-to-date information.

Global Merged Weather States from ISCCP HGG Cloud Dataset

The merged weather states presented here are derived from the original non-merged datasets through merging of WS3 and WS6 into one cirrus category (CIR-WS3), and WS9 and WS10 into one stratocumulus category (STC-WS8). More details for the combination can be found in Tselioudis et al. (2021).

Mean PC-τ plots for the HGG global merged weather states
Figure 1: Mean PC-τ plots for the HGG global merged weather states.

Geographic distribution of Weather States for the HGG global merged states
Figure 2: Geographic distribution of Weather States for the HGG global merged states.

To download ISCCP global merged, 3-hourly HGG weather state (WS) data in netCDF form, click here and select the merged.zip archive. The enclosed datasets are at 1-degree horizontal resolution, and currently (as of May 2021) cover the period from July 1983 to June 2017. They will be updated as the HGG dataset is expanded.

After downloading the HGG WS merged data, refer to the README.txt file for a detailed description of the data, the H1.py script for an example of using the data in Python, and H1.ipynb (requires jupyter notebook) for an interactive version of H1.py.

Please direct questions about the Global Weather States from HGG data to Dr. George Tselioudis or Dr. Jasmine Rémillard.

This material is based upon work supported by the NASA MEaSUREs Program.

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