NASA satellite captures rare phenomenon over New Zealand

on 7 September 2024, the American satellite Landsat 8, belonging to NASA, captured a unique natural phenomenon over the Otago region on the South Island of New Zealand - a lenticular cloud. This rare atmospheric formation is surprising in its shape and is of great interest to scientists and nature lovers.

What are lenticular clouds?

Lenticular clouds are rare cloud formations that take a characteristic lenticular shape.

An interesting feature of lenticular clouds is that they remain virtually stationary despite the strong winds that create them. This is because the cloud is formed at a point where the air masses are constantly rising and falling, keeping the cloud stable in the sky.

Mechanism of formation

Lenticular clouds occur when the wind encounters natural obstacles such as mountains, which is especially true in New Zealand with its mountainous terrain. When the airflow is forced to rise over the mountains, it cools and the water vapour condenses to form a cloud. This occurs at the top of the "wave" created by the air. Conversely, downward air currents warm up, causing moisture to evaporate and clouds to break up.

Landsat 8 observation

The Landsat 8 surface observation satellite witnessed the formation of this rare natural phenomenon over New Zealand. Lenticular clouds are difficult to observe from the ground due to their rarity and formation, so satellite imagery plays an important role in the study of such phenomena.

Landsat 8 is equipped with high-tech instruments for observing atmospheric processes, which allow capturing small changes in cloud structure and analysing their origin. In this case, the satellite captured a lenticular cloud over the Otago region, which attracted the attention of climate and atmospheric scientists.