Spectral parameters for the nu(6) region of HCOOH and its measurement in the infrared tropospheric spectrum

New spectral parameters (line positions and intensities) have been generate d for the nu(6) band of HCOOH, which agree well with 0.002 cm(-1) resolutio n infrared laboratory spectra. The line positions were derived from previou sly published spectroscopic constants [Bumgarner et al., 1988]. New relativ e intensities were derived from the analysis of A type and B type transitio ns. The new line parameters allow improved quantitative analysis of atmosph eric spectra from the 1105 cm(-1) Q branch, provided that the previously ne glected HDO strong tropospheric absorption in this region is taken into acc ount.