AIREP: Go to https://www.1800wxbrief.com/Website/interactiveMap, turn on the "Pilot Reports" layer, and look for "ARP" symbols on the map. You'll mostly see these over oceanic routes, especially in the Atlantic.
The AIREP reports are coded in PIREP format, so you'll need to look up the instructions for manually decoding those online.
That was a huge drama during Covid-19 as weather forecasters heavily rely on these automated weather reports for feeding their models. In Europe there are also special equipped Airbus/Boeings for collecting WMO-grade weather data while flying their standard routes - they were mostly grounded during the pandemic.
They partially replaced the data with the experimental Aeolus satellite which made its data into the productive forecasts within months due to their high quality.
AMDAR: https://madis-data.ncep.noaa.gov/MadisAircraftPublic/
AIREP: Go to https://www.1800wxbrief.com/Website/interactiveMap, turn on the "Pilot Reports" layer, and look for "ARP" symbols on the map. You'll mostly see these over oceanic routes, especially in the Atlantic.
The AIREP reports are coded in PIREP format, so you'll need to look up the instructions for manually decoding those online.