TWP-ICE/ACTIVE MONSOON CASE STUDY

Liquid water content and other precipitation property measurements (white symbols) versus sample case study simulations (colored lines):



Comments:

• Tropical Cloud Properties and Heating Rate Profiles (TCPRHP) retrievals at Darwin are supplied by Sally McFarlane, Jim Mather, and Jennifer Comstock. Values represent instantaneous profiles over the DOE ARM site reported at 10-s and 45-m resolution.
• Disdrometer data are supplied by Christopher Williams. The Joss-Waldvogen disdrometer records data continuously over an area of 0.005 m², and data are reported and shown at 1-min resolution.
• All measurement data have been downloaded from the DOE ARM data archive (www.arm.gov) and use in publications is subject to the policies described there. Any errors in plotting or representation shown here should be blamed on Ann Fridlind.
• Model results are instantaneous values reported at 10-min or 3-hr frequency and grid-scale resolution over a domain of approximately 37,000 km².

Preliminary summary:

• What stands out is the large systematic difference between peak predicted LWC and the observations. On the one hand, overprediction of LWC is consistent with underprediction of MMD and Doppler velocity, as well as relatively good agreement with reflectivity, if drop size is underpredicted and rain rate is therefore underpredicted. However, peak predicted rain rate is generally high compared with C-Pol retrievals. Additional investigation is needed.