Level 4 (L4) processed upper-air sonde data High vertical resolution (5-10m) sonde data that have been interpolated to uniform 5-hPa levels. Quality-control flags are assigned objectively based on a number of QC checks and then adjusted by visual inspection. For details of interpolation and assigning QC flags see the following publications: Ciesielski, P. E., P. T. Haertel, R. H. Johnson, J. Wang, and S. M. Loehrer, 2011: Developing High-Quality Field Program Sounding Datasets. Bull. Amer. Met. Soc, 93, 325-336. Ciesielski, P. E, H. Yu, R. H. Johnson, K. Yoneyama, M. Katsumata, C. N. Long, S. M. Loehrer, J. Wang, K. Young, S. F. Williams, W. Brown, J. Braun, and T. Van Hove, Quality-controlled upper-air sounding dataset for DYNAMO/CINDY/AMIE: development and corrections J. Atmos. Ocean. Tech., in press. For additional details of L4 processing and definition of QC flags see the following web site: http://www.eol.ucar.edu/projects/sondeqc/ File naming convention: upa5i_* L4 processed data coming from L3 data with no corrections (Guam, Koror and Yap) upaqi_* L4 processed data coming from L3 data with various corrections (all other sites with hi-res data) L4 data file Station upa5i_91212 Guam upa5i_91408 Koror upa5i_91413 Yap upaqi_43466 Colombo upaqi_43555 Male upaqi_43599_arm Gan ARM upaqi_43599_mms Gan MMS upaqi_48698 Singapore upaqi_61967 Diego Garcia upaqi_63741 Nairobi upaqi_63985 Seychelles upaqi_91532 Nauru upaqi_92044 Manus upaqi_94120 Darwin upaqi_96035 Medan upaqi_96147 Ranai upaqi_96163 Padang upaqi_96237 Pangkal upaqi_96749 Jakarta upaqi_96851 Pontianak upaqi_96935 Surabaya upaqi_97014 Manado upaqi_97072 Palu upaqi_97180 Makassar upaqi_97372 Kupang upaqi_97560 Biak upaqi_97724 Ambon upaqi_97980 Merauke upaqi_99970 Sipora upaqi_99980 Dropsondes upaqi_99990 Mirai upaqi_99991 Revelle upaqi_99992 Sagar Kanya upaqi_99993 Baruna Jaya The Gan data are from systems operated by two different agencies. The Maldivian Meteorological Service (MMS) operated the site prior to the start of the DYNAMO field phase (15 June to 30 September 2011), the Atmospheric Radiation Measurement (ARM) group then operated the site during most of the field phase (1 October 2011 to 9 February 2012 and some test releases in late September), then following the political unrest in the region the MMS took over the operations for the end of the project (12 February to 8 April 2012). The two release sites were within 20 m or so of one another. read_upa_L4.f - a sample fortran program for reading in L4 processed data Version 2 of this L4.0 data set was released on 27 May 2014 and includes the latest corrections that were applied to the L3.0 Indonesian Meisei radiosonde data by JAMSTEC. For Level 3.0 data, corrections of humidity have been applied with two methods. One is a CDF matching based on the intercomparison of Vaisala RS92 and Meisei onboard the Mirai, and the second is a correction for the RH discontinuity at the 0C level following a method provided by Sugidachi and Fujiwara (2013). Details can be found in Ciesielski et al. (2014). Questions or isssues with data should be referred to: Paul Ciesielski (paulc@atmos.colostate.edu)