Upside Down Rainbows

Today, I will to talk about upside down rainbows.

The upside down rainbow is a phenomenon that you can see an upside down rainbow.

Scientifically, it's referred to as a circumzenithal arc.

This rainbow forms an arc centered at the zenith above the sun, and the colors of the sun side is red, and the zenith side is blue.

It occurs when sunlight is refracted by grains of ice.

However, various conditions are needed, such as, the sun altitude is 32 degrees or less, there are hexagonal plate shaped ice crystals in clouds, the ice crystals maintain a horizontal posture, and winds are weak.

It's difficult to meet conditions, but I'd like to watch it someday.

逆さ虹

今日は、逆さ虹について話します。

逆さ虹は、逆さ向きの虹が現れる自然現象です。

科学的には、環天頂アークと呼ばれます。

この虹は、太陽の上方に天頂を中心とした円弧を形成し、太陽側が赤、天頂側が紫となっています。

大気中の氷の粒で太陽光が屈折することで、発生します。

ただし、太陽高度が32度以下、雲の中に六角板状の氷晶がある、氷晶が底面を水平に落下姿勢を保つ、風が弱い、などの条件が必要です。

条件は厳しいですが、一度は見てみたいです。

• Today, I will to talk about upside down rainbows.
• This sentence is perfect! No correction needed!

• The upside down rainbow is a phenomenon that you can see an upside down rainbow.
• The upside down rainbow is a phenomenon that where you can see an rainbow upside down rainbow.

• Scientifically, it's referred to as a circumzenithal arc.
• This sentence is perfect! No correction needed!

• This rainbow forms an arc centered at the zenith above the sun, and the colors of the sun side is red, and the zenith side is blue.
• This sentence is perfect! No correction needed!

• It occurs when sunlight is refracted by grains of ice.
• It occurs when sunlight is refracted by grains of ice crystals.

• However, various conditions are needed, such as, the sun altitude is 32 degrees or less, there are hexagonal plate shaped ice crystals in clouds, the ice crystals maintain a horizontal posture, and winds are weak.
• However, various conditions are needed, such as, the sun altitude is must be 32 degrees or less, there are must be hexagonal plate shaped ice crystals in clouds, the ice crystals have to maintain a horizontal posture, and winds are need to be weak.

  must/have to/need to be/should be all okay in any of those places. ^^

• It's difficult to meet conditions, but I'd like to watch it someday.
• It's difficult to meet these conditions, but I'd like to watch see it this phenomenon someday.

  It's a good idea to repeat the topic occasionally^^

• Today, I will to talk about upside down rainbows.
• This sentence is perfect! No correction needed!

• The upside down rainbow is a phenomenon that you can see an upside down rainbow.
• It's an unusual phenomenon.

  You are repeating the same point again. Just write it this way.

• Scientifically, it's referred to as a circumzenithal arc.
• This sentence is perfect! No correction needed!

• This rainbow forms an arc centered at the zenith above the sun, and the colors of the sun side is red, and the zenith side is blue.
• This sentence is perfect! No correction needed!

• It occurs when sunlight is refracted by grains of ice.
• It occurs when sunlight is refracted by ice crystals.

  Looking at it's definition, it's written this way.

• However, various conditions are needed, such as, the sun altitude is 32 degrees or less, there are hexagonal plate shaped ice crystals in clouds, the ice crystals maintain a horizontal posture, and winds are weak.
• However, various conditions are needed: the sun's altitude must be 32 degrees or less; clouds need to have hexagonal plate shaped ice crystals; ice crystals in a horizontal posture; and weak winds.

  This one is tricky. You can get : and ; to give reasons. But the way it's written needs to change. Even native speakers might not know how to use the right punctuation.

• It's difficult to meet conditions, but I'd like to watch it someday.
• It's difficult to meet these conditions, but I'd like to be able to view this phenomenon someday.

First time hearing of it. I am glad Science has been able to record a lot of unusual phenomenon.