Specific Humidity from Columbia/GISS regional model Run. Names of files: hus.GISS.(SOURCE).(MONTH).(YEAR) hus850day.GISS.(SOURCE).(MONTH).(YEAR) sa8506hr.GISS.(SOURCE).(MONTH).(YEAR) Where: hus.GISS.(SOURCE).(MONTH).(YEAR) is the 3D monthly specific humidity (g/Kg) over the entire domain, (35W to 35E, 20S to 35N). hus850day.GISS.(SOURCE).(MONTH).(YEAR) is the daily 850hPa specific humidity (g/Kg) over the domain, (20W to 30E, 0 to 35N). sa8506hr.GISS.(SOURCE).(MONTH).(YEAR) is the 6hourly 850hPa specific humidity (g/Kg) over domain, (20W to 30E, 0 to 25N). SOURCE represents the source (NCEP, HADL) of boundary forcings. MONTH represents the month (MAY, JUN, JUL, AUG, SEP and OCT; 30-day month). YEAR is the year (2000, 2003, 2004 and 2005). Format of the data: Binary