Abstract
Air was sampled with 5L flasks at Kitt Peak (2100 m elev) from 1983 through 1984 at approximately monthly intervals. The Kitt Peak CO2 concentrations, represented by a yield measurement, fluctuated c25% over the monitoring period. The δ13C values (uncorrected for N2O) varied from c-7.6 to -9.0‰, with high values (and low CO2 yields) in the late summer consistent with hemispheric seasonal biosphere effects. 14C activity of four Kitt Peak samples range from 1.158±.007 to 1.223±.008 as uncorrected fraction of modern, below free air activity of c1.250 for 1984 even after correcting for fractionation. -from Authors
Original language | English (US) |
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Pages (from-to) | 464-468 |
Number of pages | 5 |
Journal | Radiocarbon |
Volume | 31 |
Issue number | 3 |
DOIs | |
State | Published - 1990 |
Externally published | Yes |
ASJC Scopus subject areas
- Archaeology
- General Earth and Planetary Sciences