|Title||Parameterizing the instrumental spectral response function and its changes by a super-Gaussian and its derivatives|
|Publication Type||Journal Article|
|Year of Publication||2017|
|Authors||Beirle, S, Lampel, J, Lerot, C, Sihler, H, Wagner, T|
|Journal||Atmospheric Measurement Techniques|
|Type of Article||Research article|
The instrumental spectral response function (ISRF) is a key quantity in DOAS analysis, as it is needed for wavelength calibration and for the convolution of trace gas cross sections to instrumental resolution. While it can generally be measured using monochromatic stimuli, it is often parameterized in order to merge different calibration measurements and to plainly account for its wavelength dependency. For some instruments, the ISRF can be described appropriately by a Gaussian function, while for others, dedicated, complex parameterizations with several parameters have been developed.