Project Data System Project Parameters List for PEM-Tropics aboard NASA's P3-B ============================================================= The following is a list of the parameters available from Project Data System for the P3-B (see also VARIABLE.TXT for the DC8) Parameter Description ------------------ -------------------------------------------------- EVENT (none) Quality EVENT flag codes for this data. 10 = data exists for all datasets 11 = No DADS Data 13 = No Project Data 15 = Dew Point on Lower Limit 20 = No Valid Data 300 + one of this above = Takeoff 400 + one of this above = Landing SECS (seconds) Time - GMT. Source: Datum Model bc627AT - GPS Receiver Card JDAY (days) Day of the year - The day number of the present date according to GMT. Source: Datum Model bc627AT - GPS Receiver Card UTMTIME (HHMM.SS) UTM Time - GMT. Source: Datum Model Datum Model bc627AT - converted from SECS FMSTIM (HHMMSS) Time from P3-B Flight Management System FMSALTP (feet) P3-B Flight Management System Altitude Pressure FMSTAS (knts) P3-B Flight Management System True Air Speed FMSTS (DegC) P3-B Flight Management System Static Temperature FMSLAT (deg) Latitude - The aircraft's present latitudinal position. Source: P3-B Flight Management System FMSLON (deg) Longitude - The aircraft's present longitudinal position. Source: P3-B Flight Management System FMSGS (knts) Ground speed - The aircraft's speed over the ground. Source: P3-B Flight Management System FMSTRK (deg) Track angle - The actual path of the aircraft over the surface of the earth. Source: P3-B Flight Management System FMSHD (deg) Aircraft Heading - From P3-B Flight Management System FMSWNS (knts) Wind Speed - From P3-B Flight Management System FMSWND (knts) Wind Direction - From P3-B Flight Management System DP1011 (DegC) Measured Dew Point DPPOW (Volt) Measured Power to Dew Point measuring system TTDEGC (DegC) Measured Total Temperature PCAB (psi) Measured Cabin Pressure DIFFPSI (psi) Measured Differential Pressure PSPSI (psi) Measured Static Air Pressure UVZ (mw/cm^2) UV Radiation - Zenith UVN (mw/cm^2) UV Radiation - Nadir UVZTEMP (DegC) Measured Temperature of UV Zenith UVNTEMP (DegC) Measured Temperature of UV Nadir SURTEMP (DegC) IR surface temperature - The infrared temperature of the surface of the earth or cloud top beneath the aircraft. VAS (fpm) Measured Vertical Air Speed PITCH (deg) Pitch - The angle between the longitudinal reference axis of the aircraft and the horizontal plane of the earth. ROLL (deg) Roll - The angle between the aircraft lateral axis and a horizontal plane measured about the aircraft's longitudinal axis. WNS (knts) Wind speed - The horizontal velocity of the air mass at aircraft's present position. NODATA (NONE) No data reported here PTPSI (psi) Calculated Total Pressure in psi PTMB (mb) Calculated Total Pressure in mb PSMB (mb) Calculated Static Pressure in mb DIFFMB (mb) Calculated Differential Pressure in mb TSDEGC (DegC) Calculated Static temperature in DegC TSDEGK (DegK) Calculated Static temperature in DegK MACH (None) Calculated MACH number TAS (knts) Calculated True Air Speed TTDEGK (DegK) Claculated Total Temperature POTTEMP (DegK) Calculated Potential Temperature VPPW (mb) Calculated Partial Pressure of Water VPPI (mb) Calculated Partial Pressure of Ice VPSW (mb) Calculated Saturated Pressure of Water VPSI (mb) Calculated Saturated Pressure of Ice SH1011 (g/kg) Calculated Specific Humidity RHW (Pcent) Calculated Percentage (%) of Relative Humidity of Water RHI (Pcent) Calculated Percentage (%) of Relative Humidity of Ice ALTP (feet) Calculated Pressure Altitude ALTCAB (feet) Calculated Cabin Altitude ===============================================================================