1914 20160701171655.0 ASTROimport-71 Grevesse, N. 1990 Identification of solar vibration-rotation lines of NH and the solar nitrogen abundance High resolution solar spectra obtained from the ATMOS Fourier Transform Spectrometer (Spacelab 3 flight on April 29 - May 6, 1985) made it possible to detect for the first time vibration-rotation lines of NH from the X3 Sigma(-) state near 3 microns. Using recent theoretical results for the transition probabilities of 23 selected measured lines of the 1-0 and 2-1 bands, a solar abundance of nitrogen of 8.06 + or - 0.07 is derived. This value is compared with the result derived from N I lines and agrees with the abundance obtained from the 3s-3p, 3p-3d and 3s-prime - 3p-prime transitions, A(N) = 8.00 + or - 0.09. The final recommended solar abundance of nitrogen is A(N) = 8.00 + or - 0.05. Lambert, D. L. Sauval, A. J. van Dishoeck, E. F. Farmer, C. B. Norton, R. H. Astronomy and Astrophysics 232 1990 225-230 http://esoads.eso.org/abs/1990A%26A...232..225G published in REFERD