Tools All data files in this archive are provided in netCDF format. For your convenience, read files in C, with an accompanying Makefile (see below), are included. There are also many software packages freely available or licensed with utilities to access the data in netCDF-formatted files. You can find a comprehensive list of these software packages at http://www.unidata.ucar.edu/software/netcdf/software.html read_1Hz.c read_10Hz.c read_40Hz.c Makefile Data File Descriptions Each flight is identified by the UTC date on which it started as in YYMMDD where YY, MM, and DD are the year, month and day, respectively. For each flight there is a directory (folder) named YYMMDD containing data files from that flight. Two types of data files are provided: low-rate (1-Hz) data for the whole duration of the flight and high-rate (10-Hz) data from level and straight runs. Names of 1-Hz data file have this form: YYMMDDC_Ps where "C" stands for CIRPAS data system, "P" stands for processed and "s" for slow rate. Names of 10-Hz data files have this form: YYMMDDrnn where "r" stands for run and "nn" is the run number (runs are numbered chronologically). For example, data files for the flight that originated on February 11, 2000 are in directory "000211". These files are: 000211C_Ps.mat 000211r01.mat 000211r02.mat 000211r03.mat 000211r04.mat 000211r05.mat 000211r06.mat 000211r07.mat 000211r08.mat 000211r09.mat 000211r10.mat 000211r11.mat 000211r12.mat 000211r13.mat 000211r14.mat 000211r15.mat ***Important Exception: Data from the flight on February 20, 2000 (000220) are not from CIRPAS data system but from a redundant system (UCI's) and therefore the 1-Hz data file name does not include the "C" and most importantly the sampling rate for the high-rate data is 40 Hz instead of 10 Hz. The variables in the 1-Hz files are: Variable  |  Description  |  Units t  |  UTC  |  YYYYMMDDHHMMSS.xx hr  |  Radar Altitude  |  m lat  |  Latitude  |  deg N lon  |  Longitude  |  deg E wx  |  East Wind  |  m/s wy  |  North Wind  |  m/s wz  |  Vertical Wind  |  m/s ah  |  Absolute Humidity  |  g/m3 ta  |  Ambient Temperature  |  deg C td  |  Dewpoint Temperature  |  deg C ts  |  IR Sea Surf Temperature  |  deg C ps  |  Static Pressure  |  hPa in addition to a character array variable, AA_README, within the *.mat where this variable listing is stored to make each file self-contained. The variables in the 10-Hz (40-Hz for flight 000220) files are: Variable  |  Description  |  Units t  |  UTC  |  YYYYMMDDHHMMSS.xx hr  |  Radar Altitude  |  m lat  |  Latitude  |  deg N lon  |  Longitude  |  deg E wx  |  East Wind  |  m/s wy  |  North Wind  |  m/s wz  |  Vertical Wind  |  m/s ah  |  Absolute Humidity  |  g/m3 ta  |  Ambient Temperature  |  deg C td  |  Dewpoint Temperature  |  deg C ts  |  IR Sea Surf Temperature  |  deg C ps  |  Static Pressure  |  hPa f  |  Frequency  |  Hz O_wz_ah  |  Lat Heat Ogive  |  W/m2 O_wz_theta  |  Sensible Heat Ogive  |  W/m2 O_wz_war  |  Along-wind Moment Ogive  |  Pa O_wz_wcr  |  Cross-wind Moment Ogive  |  Pa in addition to a character array variable, AA_README, within the *.mat where this variable listing is stored to make each file self-contained.