Which vineyard aspect will receive the most heat?

The choice of south-facing slopes in the Northern Hemisphere is correct because these slopes are oriented towards the sun, allowing them to receive the most direct sunlight throughout the day. This orientation results in increased solar radiation, which warms the soil and the air surrounding the vines, creating a more favorable microclimate for grape growing.

In contrast, east-facing slopes receive sunlight primarily in the morning, which can lead to cooler temperatures in the afternoon and less overall heat compared to south-facing slopes. West-facing slopes would receive sunlight in the afternoon, which can also create warmth but typically not as consistently as south-facing slopes do throughout the day. North-facing slopes in the Northern Hemisphere receive the least sunlight, leading to cooler conditions and less heat accumulation. In the Southern Hemisphere, north-facing slopes would similarly receive less sunlight, further emphasizing why the south-facing aspect in the Northern Hemisphere is the most advantageous for heat accumulation in vineyards.