Marco Matricardi

Learn More
A fast radiative transfer model has been developed for prelaunch simulation studies of Infrared Atmospheric Sounding Interferometer (IASI) data and for the exploitation of IASI radiances within the framework of a numerical weather prediction variational analysis scheme. The model uses profile-dependent predictors to parameterize the atmospheric optical(More)
An RTTOV-type fast radiative transfer model has been developed for emitted clear-sky limb radiances from the Michelson Interferometer for Passive Atmospheric Sounding (MIPAS) onboard ESA's Envisat. MIPAS is an infrared sounder with very high spectral resolution (0.025 cm, Table 1). It is designed to provide information on the thermal structure and chemical(More)
The sensitivity of a new algorithm for cloud detection over a sea surface has been assessed on the basis of extensive simulations of clear and cloudy radiance spectra, including water and ice and low- and high-altitude clouds. The new algorithm makes use of autocorrelation and cross correlation between an observed spectrum and either a synthetic or a(More)
One of the essential tools to exploit satellite radiance data in an NWP model assimilation system is a fast radiative transfer (RT) model. This includes both the forward model, which computes satellite radiances for a given profile vector, and its jacobian which computes the change in radiances with respect to the input profile variables. The RTTOV fast RT(More)
An improved version of RTIASI, the ECMWF fast radiative transfer model for the Infrared Atmospheric Sounding Interferometer, has been developed. In the new version of RTIASI (RTIASI-4) the accuracy of the fast transmittance model has been improved by including 4 more molecules (HNO3, CCl4, CF4 and OCS) in the line-by-line computations and by using the year(More)
The technique of partially scanned interferograms is applied to the retrieval of trace gases from Infrared Atmospheric Sounding Interferometer (IASI) observations. For the specific case of CO, CO₂, CH₄ and N₂O, we show that this methodology allows us to retrieve trace gases column abundances at an unprecedented accuracy at the level of the single IASI(More)
Measurements of up-looking spectral radiances measured during the Convection and Moisture Experiment and down-looking spectral radiances measured at one of the Atmospheric Radiation Measurement sites are compared with simulations with use of two different line-by-line models. Simulations are performed in tightly controlled conditions to verify the behavior(More)
Measurements of up-looking spectral radiances measured during the Convection and Moisture Experiment and down-looking spectral radiances measured at one of the Atmospheric Radiation Measurement sites are compared with simulations with use of two different line-by-line models. Simulations are performed in tightly controlled conditions to verify the behavior(More)
A new fast radiative transfer model to compute infrared limb radiances for the Michelson Interferometer for Passive Atmospheric Sounding (MIPAS) has been developed and validated, and a first application is presented. The model, referred to as RTMIPAS, can simulate radiances for all channels of the high-spectral resolution MIPAS instrument in the 685-2000 cm(More)