Atmospheric Chemistry and Physics Discussions www.atmos-chem-phys-discuss.net 1680-7367 1680-7375 6 3 2006 10.5194/acpd-6-4251-2006 http://www.atmos-chem-phys-discuss.net/6/4251/2006/ http://www.atmos-chem-phys-discuss.net/6/4251/2006/acpd-6-4251-2006.html http://www.atmos-chem-phys-discuss.net/6/4251/2006/acpd-6-4251-2006.pdf 4251 4272 2006-05-29 MIPAS database: Validation of HNO<sub>3</sub> line parameters using MIPAS satellite measurements J.-M. Flaud G. Brizzi M. Carlotti A. Perrin M. Ridolfi Laboratoire Interuniversitaire des Syst&egrave;mes Atmosph&eacute;riques (LISA), CNRS, Universit&eacute;s Paris 12&7, 61 avenue du G&eacute;n&eacute;ral de Gaulle, 94010 Cr&eacute;teil Cedex, France Dipartimento di Chimica Fisica e Inorganica, Universit&agrave; di Bologna, Viale del Risorgimento, 4, 40136 Bologna, Italy Using new and accurate experimental results concerning the spectroscopic properties of the HNO<sub>3</sub> molecule as well as improved theoretical methods it has been possible to generate an improved set of line parameters for this molecule in the spectral range covered by the MIPAS (<B>M</B>ichelson <B>I</B>nterferometer for <B>P</B>assive <B>A</B>tmospheric <B>S</B>ounding) experiment. These line parameters, which have been validated using broadband atmospheric spectra recorded by MIPAS, have been included in the last version of the MIPAS spectroscopic database to be used for future processing of the MIPAS spectra.