Artemis II: How the weather will be a crucial factor in the launch

Artemis II: How the weather will be a crucial factor in the launch Image caption,

Nasa's Artemis II Space Launch System rocket and Orion spacecraft sits on Launch Pad 39B at the Kennedy Space Center on 31 March in anticipation of lift off

The weather rules include atmospheric electricity, types of cloud, specifically cumulus and disturbed weather like rain or strong winds.

Using a percentage chance of a violation of the rules, launch weather officers use a combination of meteorological and climatological data, local knowledge, and experience to forecast this probability.

Lightning is one of the biggest risks, but it is not only the natural lightning from a thunderstorm – or cumulonimbus cloud – that forecasters will be concerned about.

Rocket-induced lightning from an enhanced atmospheric electric field is also a major risk.

“Some types of clouds, even if they’re not producing lightning, carry an electrical charge where a rocket passing through them at high speeds with a trail of exhaust can act like a lightning rod and trigger a lightning strike,” said Burger.

This rocket-induced lightning can be triggered much more easily than natural lightning.


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Sam Miller

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