Exam 17: Global Climate
The rainiest places in the world are usually located
C
The Köppen scheme for classifying climates employs annual and monthly averages of
A
A yearly rainfall of 14 inches in a hot climate will support only sparse vegetation.The same total amount of rain in north central Canada would support a conifer forest.Why is this possible?
The difference in vegetation supported by the same amount of rainfall in a hot climate versus north central Canada can be attributed to several factors, including temperature, evaporation rates, soil type, and the distribution of rainfall throughout the year.
In a hot climate, high temperatures lead to higher evaporation rates. This means that even though 14 inches of rain may fall over the course of a year, a significant portion of this water is lost to the atmosphere before it can be used by plants. The intense heat and sunlight also dry out the soil more quickly, further reducing the availability of water for vegetation. As a result, only plants that are highly adapted to arid conditions, such as those with deep root systems or water-conserving features, can survive, leading to sparse vegetation.
In contrast, north central Canada has a much cooler climate. The lower temperatures result in lower evaporation rates, so more of the rainfall is retained in the soil and available for plant use. Additionally, the cooler climate reduces the water needs of plants, as they transpire less water into the atmosphere. The soil in these regions is often rich in organic matter, which helps retain moisture and provides nutrients to support plant growth.
Another important factor is the distribution of rainfall throughout the year. In some hot climates, the 14 inches of rain may come in heavy bursts during a short rainy season, followed by long periods of drought. This pattern can be challenging for plant life. In contrast, the rainfall in north central Canada may be more evenly distributed throughout the year, or it may be concentrated in the summer months when the temperatures are warmer and the growing season is in full swing, which is more conducive to sustaining a conifer forest.
Coniferous trees, such as spruce, fir, and pine, are well adapted to the cooler, moister conditions found in north central Canada. They have needle-like leaves that reduce water loss and are often evergreen, which allows them to photosynthesize and grow whenever conditions are favorable, even if that is only for a short period during the summer.
In summary, the same amount of rainfall can support different types of vegetation depending on the climate, soil, and rainfall distribution. The cooler temperatures, lower evaporation rates, and potentially favorable rainfall patterns in north central Canada create conditions that can support a conifer forest, whereas the hotter, drier conditions in a hot climate may only support sparse vegetation.
The coldest areas of the northern hemisphere are found ____ of large land masses.
When the average temperature of the warmest month averages 0°C (32°F)or below,Köppen classified this as a ____ climate.
Savanna grass would most likely be associated with which climate type?
Compare the climate of your town with that of another location at the same latitude,but in a different continent.Explain any similarities or differences.
How is it possible for regions with a desert climate to be found next to an ocean,which you might expect to be an abundant source of moist air?
Where is the Mojave Desert located? What factors account for the Mojave Desert being found there?
Seattle,Washington (lat.47.5oN)has a coastal Mediterranean (Csb)climate.New York,New York (41oN)has a humid subtropical (Cfa)climate.What differences in climate would you expect to find between these two locations?
In general,would you expect to find more rainfall on the western side or the Eastern side of the subtropical high pressure centers? How does this affect climatic conditions along the east and west coast of the United States?
In an east-west oriented mountain range,a rain shadow could be found on the ____ of the range.
A location in the center of a large,mid-latitude continent is likely to experience
Discuss some of the factors that determine where the wettest places in the world are found.
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