Impacts of Changes in Atmospheric O2 on Human Physiology. Is There a Basis for Concern?

Research output: Contribution to journalReviewpeer-review

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Impacts of Changes in Atmospheric O2 on Human Physiology. Is There a Basis for Concern? / Keeling, Ralph F.; Powell, Frank L.; Shaffer, Gary; Robbins, Peter A.; Simonson, Tatum S.

In: Frontiers in Physiology, Vol. 12, 571137, 02.03.2021.

Research output: Contribution to journalReviewpeer-review

Harvard

Keeling, RF, Powell, FL, Shaffer, G, Robbins, PA & Simonson, TS 2021, 'Impacts of Changes in Atmospheric O2 on Human Physiology. Is There a Basis for Concern?', Frontiers in Physiology, vol. 12, 571137. https://doi.org/10.3389/fphys.2021.571137

APA

Keeling, R. F., Powell, F. L., Shaffer, G., Robbins, P. A., & Simonson, T. S. (2021). Impacts of Changes in Atmospheric O2 on Human Physiology. Is There a Basis for Concern? Frontiers in Physiology, 12, [571137]. https://doi.org/10.3389/fphys.2021.571137

Vancouver

Keeling RF, Powell FL, Shaffer G, Robbins PA, Simonson TS. Impacts of Changes in Atmospheric O2 on Human Physiology. Is There a Basis for Concern? Frontiers in Physiology. 2021 Mar 2;12. 571137. https://doi.org/10.3389/fphys.2021.571137

Author

Keeling, Ralph F. ; Powell, Frank L. ; Shaffer, Gary ; Robbins, Peter A. ; Simonson, Tatum S. / Impacts of Changes in Atmospheric O2 on Human Physiology. Is There a Basis for Concern?. In: Frontiers in Physiology. 2021 ; Vol. 12.

Bibtex

@article{8da3be372bd24bfcbf863097a069208e,
title = "Impacts of Changes in Atmospheric O2 on Human Physiology. Is There a Basis for Concern?",
abstract = "Concern is often voiced over the ongoing loss of atmospheric O-2. This loss, which is caused by fossil-fuel burning but also influenced by other processes, is likely to continue at least for the next few centuries. We argue that this loss is quite well understood, and the eventual decrease is bounded by the fossil-fuel resource base. Because the atmospheric O-2 reservoir is so large, the predicted relative drop in O-2 is very small even for extreme scenarios of future fossil-fuel usage which produce increases in atmospheric CO2 sufficient to cause catastrophic climate changes. At sea level, the ultimate drop in oxygen partial pressure will be less than 2.5 mm Hg out of a baseline of 159 mmHg. The drop by year 2300 is likely to be between 0.5 and 1.3 mmHg. The implications for normal human health is negligible because respiratory O-2 consumption in healthy individuals is only weakly dependent on ambient partial pressure, especially at sea level. The impacts on top athlete performance, on disease, on reproduction, and on cognition, will also be very small. For people living at higher elevations, the implications of this loss will be even smaller, because of a counteracting increase in barometric pressure at higher elevations due to global warming.",
keywords = "atmospheric oxygen, fossil fuels, global change, evolution, V, O 2max, human health, hypoxia, high altitude",
author = "Keeling, {Ralph F.} and Powell, {Frank L.} and Gary Shaffer and Robbins, {Peter A.} and Simonson, {Tatum S.}",
year = "2021",
month = mar,
day = "2",
doi = "10.3389/fphys.2021.571137",
language = "English",
volume = "12",
journal = "Frontiers in Physiology",
issn = "1664-042X",
publisher = "Frontiers Media S.A.",

}

RIS

TY - JOUR

T1 - Impacts of Changes in Atmospheric O2 on Human Physiology. Is There a Basis for Concern?

AU - Keeling, Ralph F.

AU - Powell, Frank L.

AU - Shaffer, Gary

AU - Robbins, Peter A.

AU - Simonson, Tatum S.

PY - 2021/3/2

Y1 - 2021/3/2

N2 - Concern is often voiced over the ongoing loss of atmospheric O-2. This loss, which is caused by fossil-fuel burning but also influenced by other processes, is likely to continue at least for the next few centuries. We argue that this loss is quite well understood, and the eventual decrease is bounded by the fossil-fuel resource base. Because the atmospheric O-2 reservoir is so large, the predicted relative drop in O-2 is very small even for extreme scenarios of future fossil-fuel usage which produce increases in atmospheric CO2 sufficient to cause catastrophic climate changes. At sea level, the ultimate drop in oxygen partial pressure will be less than 2.5 mm Hg out of a baseline of 159 mmHg. The drop by year 2300 is likely to be between 0.5 and 1.3 mmHg. The implications for normal human health is negligible because respiratory O-2 consumption in healthy individuals is only weakly dependent on ambient partial pressure, especially at sea level. The impacts on top athlete performance, on disease, on reproduction, and on cognition, will also be very small. For people living at higher elevations, the implications of this loss will be even smaller, because of a counteracting increase in barometric pressure at higher elevations due to global warming.

AB - Concern is often voiced over the ongoing loss of atmospheric O-2. This loss, which is caused by fossil-fuel burning but also influenced by other processes, is likely to continue at least for the next few centuries. We argue that this loss is quite well understood, and the eventual decrease is bounded by the fossil-fuel resource base. Because the atmospheric O-2 reservoir is so large, the predicted relative drop in O-2 is very small even for extreme scenarios of future fossil-fuel usage which produce increases in atmospheric CO2 sufficient to cause catastrophic climate changes. At sea level, the ultimate drop in oxygen partial pressure will be less than 2.5 mm Hg out of a baseline of 159 mmHg. The drop by year 2300 is likely to be between 0.5 and 1.3 mmHg. The implications for normal human health is negligible because respiratory O-2 consumption in healthy individuals is only weakly dependent on ambient partial pressure, especially at sea level. The impacts on top athlete performance, on disease, on reproduction, and on cognition, will also be very small. For people living at higher elevations, the implications of this loss will be even smaller, because of a counteracting increase in barometric pressure at higher elevations due to global warming.

KW - atmospheric oxygen

KW - fossil fuels

KW - global change

KW - evolution

KW - V

KW - O 2max

KW - human health

KW - hypoxia

KW - high altitude

U2 - 10.3389/fphys.2021.571137

DO - 10.3389/fphys.2021.571137

M3 - Review

C2 - 33737880

VL - 12

JO - Frontiers in Physiology

JF - Frontiers in Physiology

SN - 1664-042X

M1 - 571137

ER -

ID: 258764421