at sea level

at sea level

At the same level as the ocean. A lot of people struggle to breathe when not at sea level.
See also: level, sea

at sea level

at the level of the surface of the ocean. It is easier to breathe at sea level than in the mountains. Boats on the ocean are at sea level, but those on rivers are not.
See also: level, sea
References in classic literature ?
Where the road dipped nearly at sea level to cross a small gulch Billy looked for water.
So is local pressure 30.92 and now it indicates field elevation or is 30.92 the pressure at sea level?
The pressure will be 29.92 inches of mercury at sea level. At an airport 1000 feet above sea level, with less atmosphere above to create the pressure, the pressure will be an inch lower at 28.92.
If you adjusted your altimeter to 29.72, it would read zero at sea level. All is once again, good.
In a person at sea level, the arterial oxygen partial pressure is 90-95 mmHg; oxygen saturation is 97%.
This is more critical for people who live at sea level. If you are going above 8000 feet, you should not climb more than 1000 feet per day if you suspect you are developing altitude-related symptoms.
Whether at sea level, where most people live, or at Everest's peak, Earth's air contains 21 percent oxygen.
At sea level, where air weighs down heavily, living things inhale oxygen-rich air.
Climbers can perform 1/5 the amount of work they do at sea level. And they use 50 percent of their work capacity just to breathe.
5 Hypoxic training is not as fast as training at sea level.
Question: Is the training as good as can be done at sea level? The answer is no.
While Abu Dhabi is susceptible to flooding, it is no more vulnerable than other cities around the world located at sea level, such as New York, Holland said.
Even at just 12,000 feet, he notes, blood-oxygen concentrations dip so low that, if they showed up in a person at sea level, "your HMO or Medicare insurance would pay for you to have supplemental oxygen."
These are people who lived at sea level but then moved to locations 10,000 feet or higher at least a year before the testing.