Consider the following description:

Annual and daily range of temperatures is low.

Precipitation occurs throughout the year.

Precipitation varies between 50cm – 250cm.

What is this type of climate?

Question

Consider the following description: Annual and daily range of temperatures is low. Precipitation occurs throughout the year. Precipitation varies between 50cm – 250cm. What is this type of climate?

Accepted Answer

Marine West coast climate Quick Verdict: The Marine West Coast climate perfectly matches all three criteria. Its proximity to warm ocean currents and year-round westerlies keeps both annual and daily temperature ranges uniquely low, while delivering consistent, year-round precipitation that varies dramatically based on local topography (from 50 cm in flat lowlands to over 250 cm in mountainous coastal regions). Marine West Coast Climate (Correct): Temperature: Under the strong influence of westerlies and warm ocean currents (like the North Atlantic Drift), this climate (Cb) enjoys extremely mild temperatures. Coastal summers are cooler (15°C–21°C) and winters are exceptionally mild for their high latitudes. Consequently, both the annual and diurnal (daily) temperature ranges are very low. Precipitation: Because these regions stay under westerlies year-round, temperate cyclones bring abundant and uniform precipitation. Rainfall is highly controlled by topography. For example, flat northwestern Europe receives roughly 50 cm to 75 cm annually. In contrast, the mountainous western coasts of North America and Chile receive annual rainfall of 250 cm to 375 cm due to orographic uplift. Equatorial Climate (Incorrect): While it has year-round precipitation, its rainfall is uniformly very high (200 cm–250 cm) throughout the year and does not drop to the 50 cm minimum described in Statement 3. More importantly, while its annual temperature range is low, its daily (diurnal) temperature range is quite high. Mid-day temperatures often reach 34°C but plummet to 21°C at night due to rapid radiational cooling—which is why nights are famously called the "winters of the tropics". China Type / Humid Subtropical Climate (Incorrect): The China type and Humid Subtropical climates are largely the same. Their diurnal and annual temperature ranges are moderately high, completely failing the first criteria (Statement 1). Furthermore, their precipitation is not uniform throughout the year; it is heavily concentrated in the summer months due to convective heating and tropical cyclones (typhoons/hurricanes), with winter rainfall (associated with temperate cyclones) being comparatively much lighter. For more details on these climate types, refer to the book “Certificate of Physical and Human Geography” (Chapters 15, 21 and 22)