What are the white spots viewed in the atmosphere of Neptune?

Question

This is for a science project and I was wondering are they just clouds? And if they are can you help me with details? I don't want to learn about the dark spot.

Answer 1

Here's what I could find on the gases of Neptune:

Models suggest that Neptune's troposphere is banded by clouds of varying compositions depending on altitude. The upper level clouds occur at pressures below one bar, where the temperature is suitable for methane to condense. For pressures between one and five bars, clouds of ammonia and hydrogen sulfide are believed to form. Above a pressure of five bars, the clouds may consist of ammonia, ammonium sulfide, hydrogen sulfide and water. Deeper clouds of water ice should be found at pressures of about 50 bars, where the temperature reaches 0 C. Underneath, clouds of ammonia and hydrogen sulfide may be found

There are many more details in the article below.