上層 じょうそう気流 きりゅうじゃありませんでした
jōsōkiryūjārimasendeshita

Noun
Desu Copula

The polite, past negative form of 上層気流

1. It was not an upper-level jet stream.; It wasn't a high-level flow.

Past/Perfective
Negative
Polite
Terminal Form