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Name Template: PUB/MISSION/level1b/podTc2/YYYY.DDD/podTc2_IIII.YYYY.DDD.HH.MM.UUUU.GGG.TT_SSSS.VVVV_nc

DDDDay of year
GGGGNSS id (G28 = GPS satellite 28)
HHHour
IIIIMission ID (CHAM, SACC, C001-06, GPSM, etc)
LLLLEO number (1-6 for COSMIC)
MISSIONMission ID (eight characters or less--champ, champrt, sacc, sacctst, etc)
MMMinute
PUBBase directory for the pub hierarchy
SSSSSubtype (an ID which tells the command options used in generating this file)
TTAntenna ID
UUUUDuration of file in minutes
VVVVVersion (an ID which tells the version of all codes using in generating thie file)
YYYYYear
Absolute Total Electron Content and auxiliary data. Each file contains continuous data from one GPS satellite (small data gaps are allowed) and is based on podGps/podObs data.

Global Data

processing_center

  • Description:Name of processing center
  • Data Type: char

creation_time

  • Description:Time of file creation
  • Data Type: char

mission

  • Description:Name of the mission
  • Data Type: char

dump_id

  • Description:Data dump ID
  • Data Type: char

leo_id

  • Description:ID of the LEO satellite
  • Data Type: int

antenna_id

  • Description:ID of the LEO antenna
  • Data Type: int

prn_id

  • Description:PRN ID of the GPS satellite
  • Data Type: int

conid

  • Description:GNSS Constellation ID - This attribute might not be present in the netcdf file that it is for GPS data. All newly processed data should have a conid parameter, but older files will not have this attribute
  • Data Type: char ('G' for GPS, 'R' for GLONASS)

start_time

  • Description:Starttime of data arc in GPS seconds
  • Data Type: double

stop_time

  • Description:Stoptime of data arc in GPS seconds
  • Data Type: double

year

  • Description:Year (four digit) of start_time
  • Data Type: int

month

  • Description:Month of the year of start_time
  • Data Type: int

day

  • Description:Day of the month of start_time
  • Data Type: int

hour

  • Description:Hour of day of start_time
  • Data Type: int

minute

  • Description:Minute of hour of start_time
  • Data Type: int

second

  • Description:Second of minute of start_time
  • Data Type: float

duration

  • Description:Duration of data arc in seconds
  • Data Type: float

attflag

  • Description:Flag: 1 if attitude data were used in processing, 0 if not
  • Data Type: int

podflag

  • Description:Flag: 1 if precise LEO orbit were used, 0 if predicted LEO orbit were used
  • Data Type: int

predorb_age

  • Description:Age in days of predicted LEO orbit
  • Data Type: int
  • Missing Value: -999

predorb_rms

  • Description:RMS of predicted LEO orbit
  • Data Type: double
  • Units: km
  • Missing Value: -999

parmsfile

  • Description:Name of input parameter file used in processing
  • Data Type: char

calfile

  • Description:Name of multipath calibration file used in processing
  • Data Type: char

dcb_units

  • Description:Units of DCB values and RMS
  • Data Type: char

leodcb_flag

  • Description:Flag: 1 if arc is LEO DCB calibrated, 0 if not
  • Data Type: int

leodcb_age

  • Description:Age in days of LEO DCB value
  • Data Type: int
  • Missing Value: -999

leodcb

  • Description:LEO DCB value
  • Data Type: double
  • Units: TECU
  • Missing Value: -999

leodcb_rms

  • Description:RMS of LEO DCB value
  • Data Type: double
  • Units: TECU
  • Missing Value: -999

gpsdcb_flag

  • Description:Flag: 1 if arc is GPS DCB calibrated, 0 if not
  • Data Type: int

gpsdcb_age

  • Description:Age in days of GPS DCB value
  • Data Type: int
  • Missing Value: -999

gpsdcb

  • Description:GPS DCB value
  • Data Type: double
  • Units: TECU
  • Missing Value: -999

gpsdcb_rms

  • Description:RMS of GPS DCB value
  • Data Type: double
  • Units: TECU
  • Missing Value: -999

leveling_err

  • Description:Standard error of phase-to-code leveling
  • Data Type: double
  • Units: TECU

tecmin

  • Description:Minimum TEC in arc
  • Data Type: double
  • Units: TECU

tecmax

  • Description:Maximum TEC in arc
  • Data Type: double
  • Units: TECU

elevmin

  • Description:Minimum elevation angle
  • Data Type: double
  • Units: deg

elevmax

  • Description:Maximum elevation angle
  • Data Type: double
  • Units: deg

tecsinmax

  • Description:TEC*sin(elevation) at maximum elevation angle
  • Data Type: double
  • Units: TECU

s4max

  • Description:Maximum S4 index in arc
  • Data Type: double

elev_s4max

  • Description:Elevation angle at maximum S4 index
  • Data Type: double
  • Units: deg

elev_tecmax

  • Description:Elevation angle at maximum TEC
  • Data Type: double
  • Units: deg

alt_elevmax

  • Description:Altitude of LEO satellite position at maximum elevation
  • Data Type: double
  • Units: km

lat_elevmax

  • Description:Latitude of LEO satellite position at maximum elevation
  • Data Type: double
  • Units: deg

lon_elevmax

  • Description:Longitude of LEO satellite position at maximum elevation
  • Data Type: double
  • Units: deg

lct_elevmax

  • Description:Local time of LEO satellite position at maximum elevation
  • Data Type: double
  • Units: hrs

alt_tecmax

  • Description:Altitude of LEO satellite position at maximum TEC
  • Data Type: double
  • Units: km

lat_tecmax

  • Description:Latitude of LEO satellite position at maximum TEC
  • Data Type: double
  • Units: deg

lon_tecmax

  • Description:Longitude of LEO satellite position at maximum TEC
  • Data Type: double
  • Units: deg

lct_tecmax

  • Description:Local time of LEO satellite position at maximum TEC
  • Data Type: double
  • Units: hrs

alt_start

  • Description:Altitude of LEO satellite position at start_time
  • Data Type: double
  • Units: km

lat_start

  • Description:Latitude of LEO satellite position at start_time
  • Data Type: double
  • Units: deg

lon_start

  • Description:Longitude of LEO satellite position at start_time
  • Data Type: double
  • Units: deg

lct_start

  • Description:Local time of LEO satellite position at start_time
  • Data Type: double
  • Units: hrs

alt_stop

  • Description:Altitude of LEO satellite position at stop_time
  • Data Type: double
  • Units: km

lat_stop

  • Description:Latitude of LEO satellite position at stop_time
  • Data Type: double
  • Units: deg

lon_stop

  • Description:Longitude of LEO satellite position at stop_time
  • Data Type: double
  • Units: deg

lct_stop

  • Description:Local time of LEO satellite position at stop_time
  • Data Type: double
  • Units: hrs

Profile Data

time

  • Description:Time of GPS measurement (GPS seconds)
  • Data Type: double
  • Units: s
  • Valid Range: 0, 99999

TEC

  • Description:Total Electron Content along LEO-GPS link
  • Data Type: double
  • Units: TECU
  • Valid Range: 0, 9999

elevation

  • Description:Elevation angle of LEO-GPS link
  • Data Type: double
  • Units: deg
  • Valid Range: -90, 90

caL1_SNR

  • Description:Signal to Noise Ratio on the L1 channel, CA code
  • Data Type: float
  • Units: volts/volt
  • Valid Range: 0, 9999

pL2_SNR

  • Description:Signal to Noise Ratio on the L2 channel, P code
  • Data Type: float
  • Units: volts/volt
  • Valid Range: 0, 9999

x_LEO

  • Description:LEO x position (ECF) at time of signal reception
  • Data Type: double
  • Units: km
  • Valid Range: -9999, 9999

y_LEO

  • Description:LEO y position (ECF) at time of signal reception
  • Data Type: double
  • Units: km
  • Valid Range: -9999, 9999

z_LEO

  • Description:LEO z position (ECF) at time of signal reception
  • Data Type: double
  • Units: km
  • Valid Range: -9999, 9999

x_GPS

  • Description:GPS x position (ECF) at time of signal transmission
  • Data Type: double
  • Units: km
  • Valid Range: -29999, 29999

y_GPS

  • Description:GPS y position (ECF) at time of signal transmission
  • Data Type: double
  • Units: km
  • Valid Range: -29999, 29999

z_GPS

  • Description:GPS z position (ECF) at time of signal transmission
  • Data Type: double
  • Units: km
  • Valid Range: -29999, 29999

S4

  • Description:S4 scintillation index
  • Data Type: float
  • Units: unit_less






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