A Quick-Look Method for the Analysis of Juno Microwave Radiometer Data

The microwave radiometer instrument (MWR) on the Juno mission yields on the order of one hundred thousand measurements of antenna temperature during each orbit around Jupiter for each of the six antennas. We have developed a computationally inexpensive method for first-order analysis of the MWR data. This quick-look analysis is comprised of deconvolution of antenna temperatures to obtain brightness temperatures and the subsequent calculation of limb darkening. In addition, we assess the variability of these quantities in the belts and zones in the Jovian atmosphere to identify regions of interest that do not fit this latitudinal structure, indicating potential longitudinal structure. Comparison of the results at six different wavelengths yields a first-order structure of the atmosphere with depth. We use simulated data to perform an extensive error analysis of the presented quick-look method. This provides us with a range of validity of the method given uncertainties in the synchrotron radiation around Jupiter, which interferes with the retrieval of brightness temperatures of the Jovian atmosphere.