A+ A A-

MeteoGroup: Lead Energy Meteorologist Matt Dobson provides this Winter 2016-17 review

Large areas of high pressure frequently resided across central and western parts of Europe, during winter 2016-17. These anticyclones blocked the eastwards progress of Atlantic low pressure areas into Central Europe for much of the winter and led to widespread dry conditions. The greatest dry anomalies were found across France, Central Europe, the Alps and southern Scandinavia. It was one of the driest winters in the last 65 years here, with many rivers and reservoirs at record low levels. However, by late February (and into March), wetter conditions started to extend south-eastwards here, with heavy snow over the Alps. Only SE Spain and NW Scandinavia experienced a wetter than normal winter.

The orientation of the high pressure blocking patterns still allowed mild westerly wind flows to predominate over northern and western half of Europe during the winter, with Spain, western France, the UK and Scandinavia having a milder than normal winter (temperatures 1-3C above normal). In contrast, the SE quarter of Europe had a cold winter (temperatures 1-3C below normal), with the most sustained and severe cold outbreaks in January. Germany and the eastern half of France averaged slightly below normal across the winter, in part due to some chilly nights under the high pressure areas. Both December and February saw widespread mild anomalies over Europe, with cold anomalies confined to just the very far south-east. However, through January, monthly averaged temperatures were more than 3C below the 1981-2010 average in a broad swathe between eastern France, central and southern Germany and across the Balkans, as high pressure was often located over the UK, allowing several very cold outbreaks from the north-east across central Europe.

Wind speeds averaged below normal over the southern half of the UK, France, Germany and northern Spain through the winter. Wind averaged slightly above normal over northern Scotland, Norway, Italy and Romania. Italy saw its best wind production in January, while Spain, France and Germany were windiest in February after rather poor production prior to this, especially over France in December and Germany in January.

The 2016-17 winter North Atlantic Oscillation (NAO) index, a measure of the strength of the westerliness across the north-east Atlantic and north-west Europe, averaged moderately positive during winter 2016-17 (+0.65). It was the 4th consecutive winter with an average positive NAO index. The last winter to see a significant negative NAO index was 2010-11. However, the key difference to the last 3 winters, was that despite the mild westerly flows in the north of Europe, high pressure was very extensive over France and Germany and this often prevented mild, wet and windy weather, normally associated with an NAO positive index, from extending down into these areas.

Winter 1992-93 was the last time we saw a winter with a similar synoptic pattern and temperature, wind and precipitation anomaly distribution over Europe.

Large areas of high pressure frequently resided across central and western parts of Europe, during winter 2016-17. These anticyclones blocked the eastwards progress of Atlantic low pressure areas into Central Europe for much of the winter and led to widespread dry conditions. The greatest dry anomalies were found across France, Central Europe, the Alps and southern Scandinavia. It was one of the driest winters in the last 65 years here, with many rivers and reservoirs at record low levels. However, by late February (and into March), wetter conditions started to extend south-eastwards here, with heavy snow over the Alps. Only SE Spain and NW Scandinavia experienced a wetter than normal winter.

 

The orientation of the high pressure blocking patterns still allowed mild westerly wind flows to predominate over northern and western half of Europe during the winter, with Spain, western France, the UK and Scandinavia having a milder than normal winter (temperatures 1-3C above normal). In contrast, the SE quarter of Europe had a cold winter (temperatures 1-3C below normal), with the most sustained and severe cold outbreaks in January. Germany and the eastern half of France averaged slightly below normal across the winter, in part due to some chilly nights under the high pressure areas. Both December and February saw widespread mild anomalies over Europe, with cold anomalies confined to just the very far south-east. However, through January, monthly averaged temperatures were more than 3C below the 1981-2010 average in a broad swathe between eastern France, central and southern Germany and across the Balkans, as high pressure was often located over the UK, allowing several very cold outbreaks from the north-east across central Europe.

 

Wind speeds averaged below normal over the southern half of the UK, France, Germany and northern Spain through the winter. Wind averaged slightly above normal over northern Scotland, Norway, Italy and Romania. Italy saw its best wind production in January, while Spain, France and Germany were windiest in February after rather poor production prior to this, especially over France in December and Germany in January.

 

The 2016-17 winter North Atlantic Oscillation (NAO) index, a measure of the strength of the westerliness across the north-east Atlantic and north-west Europe, averaged moderately positive during winter 2016-17 (+0.65). It was the 4th consecutive winter with an average positive NAO index. The last winter to see a significant negative NAO index was 2010-11. However, the key difference to the last 3 winters, was that despite the mild westerly flows in the north of Europe, high pressure was very extensive over France and Germany and this often prevented mild, wet and windy weather, normally associated with an NAO positive index, from extending down into these areas.

 

Winter 1992-93 was the last time we saw a winter with a similar synoptic pattern and temperature, wind and precipitation anomaly distribution over Europe.

Rubriche

Parte da Napoli il Festival della sostenibilità

IL COMMENTO - Nunzio Ingiusto, Giornalista, Esperto ambientale, 22-05-2017

Parte da Napoli il Festival della sostenibilità

Chissà se dopo il su e giù per l’Italia davvero nessuno resterà indietro, come dice lo slogan. L’Alleanza italiana per lo Sviluppo Sostenibile (ASviS) parte da Napoli, oggi...

Le Rinnovabili nelle regioni italiane, a che punto siamo?

IL COMMENTO - Immacolata Battaglino e Milly Supino, DLA Piper, 22-05-2017

Le Rinnovabili nelle regioni italiane, a che punto siamo?

L'attività normativa delle Regioni Italiane in materia di fonti rinnovabili è in costante evoluzione. Ma a che punto siamo? E quali sono i temi più cavillosi che la governance...

La fusione nucleare ha un cuore... italiano

THINK TECH - Agnese Cecchini, 19-05-2017

La fusione nucleare ha un cuore... italiano

E’ una D il cuore della fusione nucleare. Questa la forma del magnete presentato oggi a La Spezia messo a punto dall’Enea per il progetto ITER , il...

Carroponte, il festival green senza bottiglie di plastica

SMART CITY - Redazione, 19-05-2017

Carroponte, il festival green senza bottiglie di plastica

Torna il festival Carroponte 2017, evento che si tiene nella scenografica ex fabbrica di trasporti della omonima azienda del Comune di Sesto San Giovanni (MI), sarà sotto l’insegna...

Adiconsum: il prosumer al centro di una rivoluzione del settore energetico

CONSUMER - Redazione, 19-05-2017

Adiconsum: il prosumer al centro di una rivoluzione del settore energetico

E’ il prosumer - il consumatore che non si limita a consumare energia, ma è in grado anche autoprodurla dalle fer e di condividerla - la nuova figura...

Da Texas Instruments la nuova gamma di sensori a chip singolo a onde millimetriche

THINK TECH - Redazione, 18-05-2017

Da Texas Instruments la nuova gamma di sensori a chip singolo a onde millimetriche

Cinque soluzioni divise in due famiglie di sensori da 76 a 81 GHz, con una piattaforma di sviluppo end-to-end completa. Sono questi gli elementi inclusi nella nuova gamma...

Gli italiani popolo fedele... al gestore

CONSUMER - Redazione, 18-05-2017

Gli italiani popolo fedele... al gestore

Gli italiani si interessano sempre meno a cambiare il proprio contratti in bolletta. Una scelta che sembra tutta in controtendenza rispetto le discussioni in essere sul futuro del mercato...

Lo storage italiano in mostra a Monaco

THINK TECH - Redazione, 17-05-2017

Lo storage italiano in mostra a Monaco

Una superficie di 560 celle cilindriche agli ioni di litio per 4,3 kWh di energia, una potenza massima di 9 kW e 53 kg di peso. Sono i...

L'evento a Bari sui Piani Urbani della Mobilità Sostenibile

SMART CITY - Redazione, 17-05-2017

L'evento a Bari sui Piani Urbani della Mobilità Sostenibile

Un importante alleato per rendere le città a misura di cittadino è il comparto della mobilità urbana, che deve essere in grado di rispondere, da un lato, alle...

Dall'ENEA un laser per rilevare sostanze tossiche nei cibi

THINK TECH - Redazione, 17-05-2017

Dall'ENEA un laser per rilevare sostanze tossiche nei cibi

 

Contrastare le frodi alimentari intercettando la presenza di sostanze tossiche come l’istamina nel pesce o l’adulterazione del latte in polvere con composti utilizzati generalmente...

Consulta la versione precedente del sito di

Gruppo Italia Energia © 2013 | Via Valadier 39, Roma

Questo sito utilizza cookie, anche di terze parti, per migliorare la tua esperienza e offrire servizi in linea con le tue preferenze. Chiudendo questo banner, scorrendo questa pagina o cliccando qualunque suo elemento acconsenti all’uso dei cookie. Se vuoi saperne di più o negare il consenso a tutti o ad alcuni cookie vai alla sezione Cookie Policy