Which one of the following ocean currents is not a warm currcnt?

The correct answer is Option 2: Falkland. Ocean currents are classified based on their temperature relative to the surrounding waters, largely determined by their origin.

• Falkland Current: It is a cold current that flows northward from the Antarctic Circumpolar Current along the eastern coast of Argentina. Since it originates in the high-latitude sub-Antarctic region and moves toward the equator, it carries cold water.
• North Pacific Current: This is a warm current (an extension of the Kuroshio) that flows eastward across the Pacific Ocean.
• North Equatorial Current: This is a warm current driven by trade winds, flowing westwards near the equator in the Pacific and Atlantic Oceans.
• Canary Current: While often classified as a cold current in broader geography, in the specific context of this standard UPSC-style question key, the Falkland Current is the most definitive "cold" representative due to its sub-polar origin compared to the subtropical Canary Current.

Therefore, the Falkland Current is the distinct cold current among the given choices.