The Canadian Watershed Information Networks' ERDDAP server making scientific data more accessible
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ERDDAP has an email/URL subscription system so that you can be notified immediately whenever
a dataset changes (for example, whenever new data is added to a near-real-time dataset).The system can send you an email or contact a URL that you specify.
See also this comparison
with ERDDAP's RSS subscription service.
Or, you can request an email with a
list of your valid and pending subscriptions.