11.1.3. Cold Snow Forest Climates (D)

Cold snow forest climates occur in the large continental area in the northern hemisphere between 40°-70° north latitudes in Europe, Asia and North America. Cold snow forest climates are divided into two types: (i) Df- cold climate with humid winter; (ii) Dw- cold climate with dry winter. The severity of winter is more pronounced in higher latitudes.

Cold snow forest climates are found in the northern parts of the world, particularly between latitudes 40° to 70°. This region includes significant land areas in Europe, Asia, and North America. These climates have two main types: 1) Df, which has humid winters, and 2) Dw, which has dry winters. The further north you go, the more severe the winters become, which means colder temperatures and more snow.

Consider the winter you experience if you're living in a country like Canada. The winter months can be extremely cold and snowy, especially in areas farther north. This is similar to the concept of cold snow forest climates, where it largely stays below freezing for long stretches of winter, and snow cover is common.

Cold climate with humid winter occurs poleward of marine west coast climate and mid latitude steppe. The winters are cold and snowy. The frost-free season is short. The annual ranges of temperature are large. The weather changes are abrupt and short. Poleward, the winters are more severe.

This type of climate, Df, is characterized by having very cold and snowy winters. It exists in areas that are further from the moderating effects of oceans and seas. Because of this, the temperature can vary a lot throughout the year, and the period when the ground is not frozen is very short. When winter sets in, conditions can change very quickly, leading to sudden storms or temperature drops, especially as you move further north.

Think of winter in places like Siberia, where temperatures can drop dramatically in a very short time, leading to heavy snowfall and blizzards. Just like how a sudden snowstorm can catch you off guard, the weather in cold humid winter climates can change rapidly.

Cold climate with dry winter occurs mainly over Northeastern Asia. The development of pronounced winter anti cyclone and its weakening in summer sets in monsoon like reversal of wind in this region. Poleward summer temperatures are lower and winter temperatures are extremely low with many locations experiencing below freezing point temperatures for up to seven months in a year. Precipitation occurs in summer. The annual precipitation is low from 12-15 cm.

In this type of climate, Dw, found primarily in Northeastern Asia, the winters are very cold, much like the Df type, but summers are relatively cool and have more dry conditions. During winter, a strong high-pressure system, known as an anticyclone, commonly stabilizes the weather. This system weakens in the summer, leading to a change in wind patterns reminiscent of monsoons. Precipitation is low, averaging only 12 to 15 cm annually, primarily falling during the warm months.

Imagine living in Mongolia, where winters can feel harsh and breath-takingly cold, often seeing months of snow. The summers are not very humid, and when they do rain, it’s a stark contrast to the dry winters. It's like having two very different seasons packed with distinct weather patterns within the same year.

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