Which of the following is a requirement for the development of thunderstorms?

Prepare for the New Zealand CPL Meteorology Exam. Study with flashcards and multiple choice questions, each question offers hints and explanations. Ace your exam!

The development of thunderstorms is primarily associated with an atmosphere that is unstable through a deep layer. Instability in the atmosphere occurs when the air at the surface is warmer and more buoyant than the air above it. This condition allows for the rapid rise of warm, moist air, which is a fundamental characteristic of thunderstorms.

When the lower layers of the atmosphere heat up during the day, they can reach temperatures that lead to considerable vertical development of cumulus clouds. As this warm air rises, it cools and condenses, forming clouds and, eventually, thunderstorms. An unstable atmosphere promotes these vertical movements, which are necessary for the development of the strong updrafts characteristic of thunderstorms.

Contrary to the other options, a stable atmosphere would inhibit vertical movement and suppress thunderstorm formation. An adequate supply of moisture is important, but it's the instability that dictates the potential for thunderstorms to develop extensively. Similarly, a triggering action is required to initiate the upward movement, yet it must occur within the context of an unstable atmosphere to lead to thunderstorm development effectively.

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