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"Climate normals" are established over a period of 30 years, so even a year or two is relatively short compared to 30 years.
originally posted by: F2d5thCavv2
Define 'periods'. It is going on much longer than, say, days or weeks.
When scientists talk about climate, they're often looking at averages of precipitation, temperature, humidity, sunshine, wind, and other measures of weather that occur over a long period in a particular place. In some instances, they might look at these averages over 30 years. And, we refer to these three-decade averages of weather observations as Climate Normals.
Episodes of El Niño and La Niña typically last nine to 12 months, but can sometimes last for years. El Niño and La Niña events occur every two to seven years, on average, but they don’t occur on a regular schedule. Generally, El Niño occurs more frequently than La Niña.
With a moderate La Niña event in the tropical Pacific Ocean, global temperatures in 2021 are running decidedly cooler when compared to recent years.
Yes, it is a reference to Jupiter which means "Jupiter-like" planets, the outer gas giants, which you could have found out had you googled 'Jovian planets'.
originally posted by: AngryCymraeg
a reply to: ICycle2
I have no idea what you mean by 'Jovian planets'. Jove refers to Jupiter, which the Romans knew about. They did not know about Uranus and Neptune.