Integrated Sounding System observations of the marine atmospheric boundary layer for DYNAMO

The National Center for Atmospheric Research (NCAR) Earth Observing Laboratory (EOL) deployed two Integrated Sounding Systems (ISS) for the DYNAMO field campaign in the Indian Ocean. DYNAMO (Dynamics of the MJO) was a large multinational study of MJO (Madden-Julian Oscillation) initiation and development. The ISS were deployed as part of a NSF facility request lead by PIs from the University of Miami, Colorado State University and others. The two ISS were deployed on the island on Diego Garcia and on-board the R/V Revelle in the central Indian Ocean from October 2011 to early 2012, along with much other instrumentation from many other groups. The ISS used 915 MHz wind profiler radars, radiosonde soundings, and other instrumentation to provide near continuous profiles of atmospheric motion and thermodynamics at two corners of a sounding array. Three MJO events were observed and documented in unprecedented detail by the ISS and the wide variety of instrumentation deployed in the area. The presentation will discuss instrumentation issues, data processing procedures and some preliminary results from the ISS; for example the response of the boundary layer to sea surface temperature variations, island and ship heating, and clouds and precipitation.