What cyclical factor helps explain the cool period in Nome between about 1945 and 1975?

The question is based on Figure 24-6, a chart showing average annual temperature from 1905 to 2015 in three U.S. cities: Nome, Alaska; Bozeman, Montana; and Tucson, Arizona.
What will be an ideal response?


The negative phase of the PDO.

Environmental & Atmospheric Sciences

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What desert feature is visible in this image, indicated by an arrow?

A) Playa lake B) Desert varnish C) Sand dunes D) Inselberg

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What is the general direction of the movement of California compared to the center of the continent?

A) southeast B) northeast C) west D) northwest

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A glycine solution is 2.50%(w/w). How much glycine is there in a sample which has a mass of 250. g?

A) 1.25 g B) 5.00 g C) 6.25 g D) 12.5 g

Environmental & Atmospheric Sciences