Sandra Yuter reported problems with the Ron Brown C-band radar reflectivity calibration and pointing. These appear to be solvable.
Rob Cifelli reported that the C-band radar and the TRMM radar seem to agree fairly well. Soundings experienced about a 15% failure rate. Data are available from JOSS and CSU. Rain maps at 1 km will be produced, but the Z-R relationship needs to be determined. C-130 observations can be used, and Darrel Baumgardner is working on this.
Allen Schanot indicated that the unheated Rosemount probes on the C-130 were damaged by ice, but that the heated probe remained undamaged. This will be used as a reference temperature for the project. Comparison with dropsondes and the P-3 indicated that the C-130 had a low humidity bias. This will be corrected. The Ophir radiative thermometer doesn't work in rapid ascents and descents, and it exhibits isolated level shifts. However, it is still usable with care. The TDL instrument is not calibrated. A height-dependent correction for radiative SST has been developed.
David Raymond reported on a problem with the Ophir radiometer on the C-130 arising from the facts that about 5% of the photons reaching the device arrive from distances of 1 km or greater, and that it points down at an angle of about 20 deg from the horizontal, resulting in a warm bias outside of cloud. A fix for this problem has been developed using data from a downward-looking radiometer on the C-130.
Jeff Nystuen reported that moored acoustic rain gauges can be used to estimate both wind speed (from wave action) and rainfall rate.
Steve Williams described the JOSS webpage and data policies.