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Zorluk: Çok zorClimatic Controls and World Climate Types

A meteorological station situated in a tropical latitude at 15∘N15^\circ\text{N} at an elevation of 2200 meters2{}200\text{ meters} records a mean annual temperature of 14∘C14^\circ\text{C}, with its warmest month averaging 17∘C17^\circ\text{C} and its coldest month averaging 11∘C11^\circ\text{C}. Precipitation is heavily concentrated during the high-sun summer season under the influence of the Intertropical Convergence Zone (ITCZ), whereas the low-sun winter season is markedly dry. Under the Köppen climate classification system, how is this highland climate designated, and which primary climatic control accounts for its thermal departure from surrounding lowlands?

  1. Designated as Cw (Subtropical Highland climate); modified primarily by altitude through the environmental lapse rate.Cevap
  2. B
    Designated as Aw (Tropical Savanna climate); modified primarily by continental distance from maritime air masses.
  3. C
    Designated as Cs (Mediterranean climate); modified primarily by cold offshore ocean currents.
  4. D
    Designated as Af (Tropical Wet climate); modified primarily by prevailing trade wind inversions.

Cevap

The climate is designated as Cw (Subtropical Highland climate), modified primarily by altitude through the environmental lapse rate.
In the Köppen climate classification, when a tropical location is situated at high altitude, temperature drops at the environmental lapse rate (~6.5°C per 1,000 m). Because its warmest month is 17°C (below 18°C) and its coolest is 11°C (above -3°C), it is placed in Group C rather than Group A. Combined with a dry winter season under high-pressure subsidence, the full code is Cw (Subtropical Highland).

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1
Analyze thermal thresholds according to Köppen climate rules
Warmest month (17∘C17^\circ\text{C}) is <18∘C< 18^\circ\text{C} and coldest month (11∘C11^\circ\text{C}) is >−3∘C> -3^\circ\text{C}, excluding Group A (Tropical, all months ≥18∘C\ge 18^\circ\text{C}) and assigning the station to Group C (Warm Temperate/Mesothermal).
Köppen criteria classify any location where the warmest month drops below 18°C as non-tropical.
2
Evaluate seasonal precipitation distribution pattern
Precipitation occurs during high-sun (summer) with a dry low-sun (winter) period, giving the precipitation letter code 'w' (winter dry).
The station's wet high-sun and dry low-sun cycle matches the 'w' modifier.
3
Identify the primary climatic control responsible for cooling
Altitude reduces surface temperature via the normal environmental lapse rate (roughly 6.5∘C6.5^\circ\text{C} per 1000 m1{}000\text{ m}).
At 15∘N15^\circ\text{N} latitude, lowland temperatures exceed 27∘C27^\circ\text{C}, so an elevation of 2200 m2{}200\text{ m} lowers temperatures into the temperate CwCw range.

Anahtar Kavram

Köppen Highland Climate Classification and Environmental Lapse Rate
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Climatic Controls and World Climate Types

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