The scientists Raimundo Real and Jos? Carlos B?ez, in the College of Malaga, have analysed the potential results of its northern border Atlantic oscillation, known in scientific literature as NAO, on the standard of The spanish language cava inside a study released within the Worldwide Journal of Biometeorology.
The NAO is really a microclimate index that reflects the atmospheric pressure distinction between the Azores and Iceland, so the existence of an anticyclone within the Azores is positive which is negative if you will find regions of low pressure for the reason that same area. This pressure difference that oscillates with time, has an effect around the climate conditions within the Iberian Peninsula.
"We discovered there is an association between your NAO and the standard of cava between 1970 and 2008. The presence of positive NAO values throughout the several weeks of March to August, once the grape is developing and ageing, reduced the capability of acquiring high quality cava," Raimundo Real told SINC.
Its Northern Border Atlantic oscillation plays a significant role in weather fluctuations within the hemisphere. The phenomenon affects the weather in Europe and also the Iberian Peninsula. It relates to temperature and rain versions in cava creating regions, which affects the physiological processes throughout the grape's duration of maturity.
"The probability of acquiring a high quality cava is greater once the average worth of the NAO is negative. This will make the typical temperature within the cava region drop and the standard enhances," the expert described.
Inter-annual versions in the standard of cava are determined based on the different aromas and the quantity of sugar within the grape. These characteristics from the plant consequently, in a single section of production, rely on climate conditions, for example cloud cover, temperature and rain fall that the guarana plant is exposed, particularly throughout the grape period (March to September).
Predicting time of top-quality cava
The weather within the Atlantic Sea, the med basin and also the surrounding continents shows considerable weather variability.
"Throughout 1 / 2 of time we analysed, the NAO values are intermediate and don't clearly affect the standard from the cava, however in another half, the tend to be more extreme and result in clearly favorable or unfavorable conditions for acquiring top-quality," states Real.
The data for 2012 pointed towards an 80% probability of acquiring a high-quality cava, although this odds are around 45% for 2013, always based on the model acquired. The model properly predicted the 80% for that clearly favorable years for acquiring top-quality cava and also the 70% probability of the clearly unfavorable years.
The NAO value between March and August could be calculated in the wine the harvest, while the standard from the cava are only able to be valued 2 yrs later. "This will be significant for having the ability to predict many years of top-quality cava production, too for going through the potential side effects and versions of global warming on the standard" he came to the conclusion.
