2 Flashcards
How does water have a moderating effect on temp
It heats and cools slower than land
How many hours of sunshine do grapes need during ripening season
1500
Maritime climate
Regions close to large bodies of water
Warm summers, mild winters
Mediterranean climate
Most rainfall in winter
Dry summers
Suited to viticulture
Cali, chile, s.africa,SW oz, med
Continental climate
Middle of substantial landscape
Extreme temps in wint and summer
Benefits of mountains near vy
Example
Cast rain shadow
Protect vy
Votes mountain - Alsace
European method of classifying climatic conditions
Zones a, b, cIa,clb,cll, cllla, clllb,
A coldest clllb hottest
Diff legislation for permission to enrich or de acidity for each zone
Cali method for classifying climatic conditions
Degree days
Heat summation
Gives a measure of total useable heat for the year
Heat summation
Amount that the temp is above 50F 10C is added for each day of the growing season
Oz method for classifying climatic conditions
Similar to Cali
Mean temp of the warmest month
Adjustment for factors> hours of sunlight, humidity, rainfall, evaporation, continentality (diff btw summer and wint temp)
Site climate
Climate of individual vy
Micro climate
Climate within vine leaf canopy
Possible to change using canopy management
Frosts
Winter can damage grafts leading to death of vine
Summer can damage buds
How to protect against frost
Smudge pots - smoke blanket
Wind machines - draw in warm air from above
Sprinklers - insulating coat of ice
Earthing up
Drought
High temp + no rain >
Leaves shut down >
No sugar produced >
Grapes don’t ripen