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and (d) δ 15 N α [ ‰ vs. air-N2] of N2O versus effective date (ranging from 1939.8 to 1995.0) for 11 firn air samples pumped from Law Dome, Antarctica [67°S, 113°E] in 1997 and 2004 (blue circles), ranging in effective ages from 15 to 68 years, or versus collection date for 50 archived Cape Grim air...
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| Format: | Text |
| Language: | English |
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| Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.361.571 http://www.nature.com/ngeo/journal/v5/n4/extref/ngeo1421-s1.pdf |
| Summary: | and (d) δ 15 N α [ ‰ vs. air-N2] of N2O versus effective date (ranging from 1939.8 to 1995.0) for 11 firn air samples pumped from Law Dome, Antarctica [67°S, 113°E] in 1997 and 2004 (blue circles), ranging in effective ages from 15 to 68 years, or versus collection date for 50 archived Cape Grim air samples [40.7°S, 144.8°E] (black squares) between 1978 and 2005. Lines are unweighted linear least squares fits for the two data sets. The error bars reflect the 1σ single measurement uncertainty (or the standard error of the mean for 6 samples that were run multiple times), and, for the firn air samples, also include a small contribution (±0.01‰) from the firn air correction uncertainties (see Supplementary Information, Tables S1 and S2). δ 15 N β and Site Preference are not shown. 2 © 2012 Macmillan Publishers Limited. All rights reserved. x10-9 N 2O (ppb)x10-9 320 |
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