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0 pointsdredmorbius5y ago0 comments

Temperatures fall with elevation, about 3.5 °F (1.2°C) peer 1,000 ft of gain.

Much of this trip was at 8,000 ft. Temperatures would have been about 28°F (9.6°C) lower than at sea level. From a starting base of 100°F (37.7°C), the hikers would have seen 72°F (22.2°C) temperatures --- quite comfortable. Dry air also means sweat evaporates quickly, cooling effectively.

This effect alone is a large element of the High Sierra's appeal during summertime.

https://treelinebackpacker.com/2013/05/06/calculate-temperat...

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wolf550e5y ago

Your arithmetic / unit conversion doesn't work. Change of 3.5°F is same as change of 1.94°C, not 1.2°C. Change of 28°F is 15.5°C. 37.7 - 22.2 != 9.6.

(Water freezing to boiling is 100 degrees in C and 180 degrees in F).

dredmorbiusOP5y ago

Point. I'd taken values from the linked source, which appears to be in error. The Celsius values don't correspond to F2C conversion, as you note.

Though my final at-elevation result remains unchanged: 72°F / 22.2°C, a 15.5 degC drop.

https://treelinebackpacker.com/2013/05/06/calculate-temperat...

j / k navigate · click thread line to collapse

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wolf550e5y ago

Your arithmetic / unit conversion doesn't work. Change of 3.5°F is same as change of 1.94°C, not 1.2°C. Change of 28°F is 15.5°C. 37.7 - 22.2 != 9.6.

(Water freezing to boiling is 100 degrees in C and 180 degrees in F).

dredmorbiusOP5y ago

Point. I'd taken values from the linked source, which appears to be in error. The Celsius values don't correspond to F2C conversion, as you note.

Though my final at-elevation result remains unchanged: 72°F / 22.2°C, a 15.5 degC drop.

https://treelinebackpacker.com/2013/05/06/calculate-temperat...

j / k navigate · click thread line to collapse