Climate and Grape Growing Environment Flashcards
Climate in Bordeaux Climatic influence(s)
Moderate Maritime Climate
Atlantic Ocean lies to the west of the vineyards and is a cooling influence
Left bank protected from Atlantic storms by the Landes Forest
Average rainfall in Bordeaux
950mm per year
Excessive rain at key moments is an important factor in vintage variation. When and how
Rain at flowering can result in poor fruit set
Rain throughout the growing season can result in increased disease pressure
Rain at and following veraison can lead to unripe fruit and fungal diseases
Rain at harvest can dilute flavours
Climatic hazards in Bordeaux
Frost (e.g. 1956, 1991, 2017)
Hail - sporadic - more widespread and destructive over last decade (Gironde estuary has moderating influence so those vineyards close to the river don’t get hit as hard)
Excessive rainfall
Soils in Bordeaux
Left bank = deposits of gravel and stony soils. Gravel is mixed with clay and sand. Top sites planted on Croupes (gravel mounds)
Right bank = Far more clay in the soil, significant patches of gravel in certain sectors of the Libournais
Climate in Chablis
Continental with cold winters and warm summers
Average annual rainfall in Chablis
670mm
Climatic hazards in Chablis
Spring Frosts
Hail Storms
Rainfall spread through year = Moist climate (high threat of fungal diseases), difficulties in period leading up to harvest (threat of rot)
Soils in Chablis
Limestone and clay
Some of which has a considerable amount of fossilised seashells = “kimmeridgian”
Climate in Cote d’or, Cote Challonaise and Maconnais
Moderate Continental with cold winters and warm summers
Average annual rainfall in Burgundy [main section]
700mm
Climate hazards in Burgundy [main section]
Rain can be a threat at harvest
Spring Frosts
Hail during growing season (April-May, damage to early growth of the vine can lead to reduced yields)
Climate in Beaujolais Climatic influence(s)
Continental - slightly warmer than the rest of Burgundy
The Saone River acts as a moderator of extreme temperatures
Region is subject to cold mistral winds
Rainfall in Beaujolais
740mm per year
Soils in Burgundy [main section]
Generally composed of mixtures of various types of limestones and clay
Cotes de nuits = more dominated by limestone
Cote de Beaune = more clay and soils are deeper
Soils in Beaujolais
Northern part of the region (hilly) = fast-draining granite, schist and sandy Southern part (flatter) = soils are richer
Climate in Alsace Climatic influence(s)
Continental climate with cold winters and warm, sunny summers.
Northerly Latitude = long growing season
Protection of the Vosges mountains to the west
Fohn wind = warm wind that raises temps and reduces risk of fungal disease
Rainfall in Alsace
600mm per year
Westerly winds carry rain clouds to west side of vosges mountains
Climate hazards in Alsace
Summer drought (irrigation not permitted for AOC wines) Rain is spread throughout year - wettest months in summer, and driest normally during harvest
Soils in Alsace
On the plain = deeper, more fertile
On the hillsides = lower fertility, better drainage
Climate in Loire Climatic influence(s)
PAYS NANTAIS = Cool maritime climate = cool springs, warm and humid summers
ANJOU-SAUMUR = moderating influence of Atlantic decreases progressively, more marked in Anjou-Saumur
TOURAINE = continental climate, cold winters and warm summers
CENTRAL VINEYARDS = Continental with cold winters and warm summers
Climate hazards in Loire
PAYS NANTAIS = Threat of rain any time during growing season Spring Frosts (1991) CENTRAL VINEYARDS = Spring frosts, summer hailstorms
Soils in Loire
PAYS NANTAIS = Predominantly well draining
ANJOU-SAUMUR & TOURAINE = clay-limestone, flint-clay, sand, gravel and tuff.
More schist and limestone in Anjou and more chalk in Touraine
High Lime content in the soils
SANCERRE = Caillottes, Terre Blanches, Silex
Rainfall in Loire
ANJOU-SAUMUR & TOURAINE = 700mm
CENTRAL VINEYARDS = 750mm
What are Caillottes, Terre Blanches, Silex
Soils in Sancerre
Caillottes = shallow soils (24-40mm) over limestone. Said to produce most aromatic wines that are first to be ready to drink and less potential for ageing
Terre Blanches = Limestone and marl found in Chablis. Slow-ripening. Said to produce most structured that need long maturation
Silex = Flinty soils that accumulate heat and leads to early ripening - stony or smoky aromas
Climate in Northern Rhone Climatic influence(s)
Moderate Continental - cold winters, warm summers
Cold Mistral wind blows from north - reduces incidence of fungal diseases, decreases vine vigour
Climate in Southern Rhone Climatic influence(s)
Warm, Mediterranean climate - mild winters, very warm and dry summers
Little protection from Mistral
Climate in Languedoc and rainfall Climatic influence(s)
Mediterranean - High levels of sunshine, rainfall below 600mm per year, very warm summers
Dry, Tramontane north-west wind, blows for 200 days
Climate in Rousillon and rainfall Climatic influence(s)
Warm, windy mediterranean
Moderate rainfall - 500-600mm annually
Wind decreases yield, increases concentration, decreases income
Climate in Provence and rainfall Climatic influence(s)
Warm Mediterranean
Adequate rainfall for grapegrowing
Cold Mistral provides cooling influence - can also interrupt flowering and fruit set, reducing yields
Climate in South-West France
Broadly similar to Bordeaux, whole region is influenced by the atlantic.
Atlantic influence diminishes with greater distance from the ocean (Bergerac, Monbazillac, Cahors) = slightly less rainfall and warmer summers
Climate in Jura and rainfall
Moderate Continental Climate
1,100mm per year
Climate hazards in Jura
Significant rain during growing season
Spring Frosts
Hail
Climate in Germany Climatic influence(s)
Cool and Continental overall
(Excluding Baden) 49-50 N latitude (amongst the most northerly in the world)
Most vineyards situated along the river Rhine and it’s tributaries - rivers play a vital role in moderating temps/extending growing season
Climate hazards in Germany and Rainfall
Spring frosts - mitigated by rivers and planting on slopes
Summer - rainfall = increase fungal disease, dilution of grapes, hail
500-800mm
Soils in Germany
Mosel and Ahr - dark-coloured slate
Significant pockets of calcerous soils - Baden, Pfalz, Rheinhessen
Climate in Austria Climatic Influence(s)
Cool Continental overall
North (e.g. Wienviertal) influenced cool northerly winds
South (e.g. Steiermark) more influence from Adriatic = warmer
East (Burgenland, near Hungarian border) influenced by the warmer Pannonian climate
West (vineyards on the Danube) may experience cooler breezes from Alps
Climate hazards in Austria and Rainfall
Spring Frosts
Hail in Steiermark
Winter freeze - rare but in particularly cold winters
Low rainfall years = water stress
Soils in Austria
2 major soil types -
Thin soils over rock (granite or geniess, crystalline bedrock materially known as Urgestein)
Richer soils such as Loess
Other soils include limestone and schist (Leithaberg Hills) Gravel and volcanic material (Steiermark and parts of Kamptal)
Clime in Tokaj
Climate Influence(s)
Rainfall
Moderate Continental Climate
Region is sheltered by the worst of the cold, northerly winds by forested mountain peaks
Latitude 48-49N
500-600mm per year - half falls during growing season
Soil in Tokaj
Most significant =
Nyirok - Volcanic soil said to produce the most powerful wines
Loess - Sandy silt with high clay content (found around Tokaj hill) = lighter, more delicate wines
(Soil volcanic bedrock means vines can root very deeply - water stress and nutrient deficiency rare)
Climate in Greece Climatic Influence(s)
Generally Mediterranean with long, hot summers and short, mild winters
Inland, climate turns increasingly continental
Spring frosts can be a problem in Northern areas of Greece (Amyndeon)
Strong winds can affect yields on islands (Santorini e.g.)
Avg Rainfall in most Greek wine regions
400-700mm - little or no rain during growing season (except mountainous in N/W). Irrigation often necessary where water resources are available
Santorini is exceptionally dry
Soil in Greece
Limestone to Volcanic soils
Low fertility except on the fertile plains