Last week NCEI announced the release of the GHCNH (Global Historical Climate Network Hourly) dataset:
https://www.ncei.noaa.gov/news/next-generation-climate-dataset-built-seamless-integration
The GHCNH replaces the ISD, and as such I'm still expecting the ISD to be turned off in the next few months. This will obviously result in the HadISD having no further updates.
As many of the QC tests being applied in GHCNH are based on those in the HadISD, it does not make sense to pass the GHCNH data through the HadISD QC system. Therefore the HadISD in its current form will transform to a static dataset, and at some point in the future, will be retired and archived (though this is some time off!).
At the moment there is no plan to immediately work on a wrapper for the GHCNH data and release in a "HadISD" format. However this may change in the future as we move to using GHCNH in other systems as well.
We'll post updates on this blog over the next months during the transition from ISD to GHCNH.
