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spezzi64 Dec 29, 2019 12:20 AM
Hello, I wonder why I can't see the Italian data in the European Air Quality Index map. The points representing the measurement stations are visible, but no data are available on them.
Replies (4)
EEA Jan 06, 2020 02:40 PM
Dear M. S. Pezzi,

Thank you very much for informing us.

We have contacted our IT experts that will have a look at it. We will keep you informed as soon as the problem is resolved.

With kind regards,
EEA Enquiry Service
EEA Jan 10, 2020 12:57 PM
Dear Sir,

The European Air Quality Index map is fully operational again.

With kind regards,
EEA Enquiry Service
spezzi64 Jan 12, 2020 07:35 PM
Thank you for your kind answer, but I don't think that the problem has been solved.
No more than two dozens of stations are showing their data on the map in Italy. I don't think it's a technical problem: I've tried to call the underlying APIs that the web map application calls to fetch data and the responses are fine, in the sense that they are formally correct. But for the majority of the Italian stations, data are not present inside the JSON response, at least for the most recent days (and the web map app allows you to go back
48 hours at maximum). I'm particularly interested in the "San Pietro Capofiume" station (code IT1451A) and in Particulate Matter pollutants; I've tried also fetch past data with the "pastDays" API, always finding null values for PM10 and PM2.5 indexes, while NO2 and O3 have values. I think that the other stations are showing the same behaviour.

I know for sure that IT1451A (as the others stations) measures PM concentrations, because its results are shown by the regional environmental agency (although no real time or quasi-real time hourly averages, but only daily averages), so as these data are part of the mandatory reports that Member States are asked to transmit to EEA and It, I wonder why they are not generally available for the Italian air monitoring network.

Thank you in advance,
EEA Jan 14, 2020 09:27 AM
Dear M. Pezzi,

Thank you for your message.

For most of the PMs sampling points, Italy reports only daily data and not hourly data. The EEA can not use their daily PM data in the AQ index because we are calculating the running 24h mean value from the hourly values. Since PMs (either 10 or 2.5) values are required, we do not calculate the AQ index.
The reason why Italy is not monitoring/reporting hourly data can depend on the measurement method (the reference method is gravimetric on 24h) but also on the set-up of their equipment in case of automatic instruments (sampling and aggregation time). For more details we would recommend you to contact the Italian national authority in charge of monitoring and reporting: the Institute for Environmental Protection and Research (ISPRA) - urp@isprambiente.it.

With kind regards,
EEA Enquiry Service