What is the meaning of "brace" in the following excerpt from The Great Gatsby?
"When we pulled out into the winter night and the real snow, our snow, began to stretch out beside us and twinkle against the windows, and the dim lights of small Wisconsin stations moved by, a sharp wild brace came suddenly into the air. We drew in deep breaths of it as we walked back from dinner through the cold vestibules, unutterably aware of our identity with this country for one strange hour before we melted indistinguishably into it again."

"Brace" is a word that does imply a kind of include, however virtually the effect of the passage is talking approximately the unexpected gust of wind that causes Nick to shiver and to emerge as cold and privy to how freezing it's miles. It is vital to keep in mind the context of this passage. This is after Gatsby's funeral and is whilst Nick is remembering his days growing up in the West. Nick recalls one unique Christmas whilst this sharp "brace" passed off.

Something this is bracing (stimulating, invigorating). "Bracing" is usually used with the outdoors, and frequently refers to cold. Using "brace" with this that means is uncommon, and on account that they appear to be interior a few kind of vehicle, the use seems very unusual certainly. The use is so unusual that in the beginning I thought they had been speaking approximately ducks, however I don't know that geese can be sharp.