WeatherArb calcule le Z-Score, HDD et CDD sur la baseline NASA POWER 25 ans pour Lyon (45.75°N, 4.83°E). Norme EN ISO 15927.
Cos'è lo Z-Score climatico?
Misura quante deviazioni standard la temperatura attuale di Lyon si allontana dalla media storica dello stesso mese. Sopra +2σ indica caldo anomalo raro; sotto -2σ indica freddo anomalo.
Cosa sono HDD e CDD?
Heating e Cooling Degree Days, standard EN ISO 15927, misurano la domanda energetica per riscaldamento/raffrescamento confrontando la temperatura con una soglia di 18°C.
Con quale frequenza si aggiornano i dati di Lyon?
WeatherArb aggiorna i dati meteo di Lyon ogni ora tramite MET Norway, NOAA NWS e WeatherAPI.
Météo Lyon Aujourd'hui — Température et Anomalies Climatiques
WeatherArb surveille la température actuelle à Lyon par rapport à la baseline climatique NASA POWER sur 25 ans. En cas de canicule, pluie inhabituelle ou vague de froid, le Z-Score est mis à jour automatiquement.
Humidité, vitesse du vent et température ressentie à Lyon sont mis à jour toutes les heures. En cas de vague de chaleur (juillet: risque élevé de canicule), le niveau d'anomalie monte à EXTREME ou CRITICAL.
Risque Sismique Lyon — Moderate Seismic Risk
Lyon is with moderate seismic hazard in the Pyrenees, Alps and Provence regions, and lower risk elsewhere. WeatherArb integrates real-time climate anomaly monitoring with USGS seismic data to provide a comprehensive view of natural risk factors affecting agriculture, infrastructure and public safety.
A Changing Climate — Lyon
In the Lyon area, the mean annual temperature has risen by 1.7°C since 2001. Days with highs above 30°C went from an average of 22.1 in 2001–2010 to 37.7 in 2015–2024. The highest recorded value was 42.0°C (2023-08-24).
Methodology: Data comes from the NASA POWER reanalysis (MERRA-2) at roughly 50 km grid resolution: figures describe the surrounding area rather than a single urban station.