Welcome Arcturus66,
Nice to know someone is reading this stuff critically. smile

Originally Posted By: Arcturus66
Can you cite a good reason as to why they should not use such data?

I've seen the "reasoning" posted here before. I'll see if I can find a link to one of their answers to that question.
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I was just surfing around about that NF3 question....

Thanks Mike!
Always interesting stuff on your threads.
...fyi....

GEOPHYSICAL RESEARCH LETTERS, VOL. 33, L10817, doi:10.1029/2006GL026210, 2006

Revised IR spectrum, radiative efficiency and global warming potential of nitrogen trifluoride
J. I. Robson and L. K. Gohar, et.al.

Abstract
Nitrogen trifluoride (NF3) is an industrial gas used in the semiconductor industry as a plasma etchant and chamber cleaning gas. NF3 is an alternative to other potent greenhouse gases and its usage has increased markedly over the last decade. In recognition of its increased relevance and to aid planning of future usage we report an updated radiative efficiency and global warming potentials for NF3. Laboratory measurements give an integrated absorption cross section of 7.04 × 10−17 cm2 molecule−1 cm−1 over the spectral region 200–2000 cm−1. The radiative efficiency is calculated to be 0.21 Wm−2 ppbv−1 and the 100 year GWP, relative to carbon dioxide, is 17200. These values are approximately 60% higher than previously published estimates, primarily reflecting the higher infrared absorption cross-sections reported here.
Received 5 March 2006; revised 11 April 2006; accepted 24 April 2006; published 31 May 2006.
...pay site.... frown ...but.... smile
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"...the intensities of the two main absorption bands measured in the present work are 72% (840–960 cm−1) [~11 microns] and 23% (970–1085 cm−1) [~10 microns {really 9.8microns}]....

...GWPotential values for NF3 were calculated to be 12300, 17200 and 20700 relative to CO2 for time horizons of 20, 100 and 500 years respectively....

... Current global production levels are believed to be about 2300 metric tonnes per year. ...yields an upper limit of the current mixing ratio of 0.10 pptv. Despite the large GWP of NF3, the amount currently in the atmosphere is so small that the contribution of this molecule to overall radiative forcing is very minor (<10&#8722;4 W m&#8722;2).

...However, with an [estimated by Molina et al. (1995)] atmospheric lifetime of 740 years, there is the potential for essentially irreversible accumulation of NF3 in the atmosphere."
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It looks as if CO2 will still be the main variable keeping us out of another glaciation.
...more about that later....
smile


Pyrolysis creates reduced carbon! ...Time for the next step in our evolutionary symbiosis with fire.