Swath Name = "L1B_AMSU"
Level = "level1B"
# Footprints = 30
# scanlines per scanset = 1
The names "GeoTrack" and "GeoXTrack" have a special meaning for this document: "Cross-Track" data fields have a hidden dimension of "GeoXTrack"; "Along-Track" data fields have a hidden dimension of "GeoTrack"; "Full Swath Data Fields have hidden dimensions of both "GeoTrack" and "GeoXTrack".
| Name | Value | Explanation |
| GeoXTrack | 30 | Dimension across track for footprint positions. Same as number of footprints per scanline. |
| GeoTrack | # of scan lines in swath | Dimension along track for footprint positions. Same as number of scanlines in granule. (Nominally 45 for Level-2, AMSU, and AIRS/Vis low-rate engineering; 135 for AIRS/Vis and HSB high-rate quantities) |
| Channel | 15 | Dimension of radiance array |
| CalXTrack | 4 | Dimension "across" track for calibration footprint positions. Same as number of calibration footprints per scanline. (NUM_FOOTPRINTS_AMSU_CALIB) (Footprints are ordered: 1-2: spaceviews; 3-4: blackbody radiomentric calibration source) |
| SpaceXTrack | 2 | Dimension "across" track for spaceview calibration footprint positions. (NUM_FOOTPRINTS_AMSU_SPACE) |
| BBXTrack | 2 | Dimension "across" track for blackbody calibration footprint positions. (NUM_FOOTPRINTS_AMSU_BB) |
| WarmPRTA11 | 5 | Number of PRTs measuring AMSU-A1-1 warm target |
| WarmPRTA12 | 5 | Number of PRTs measuring AMSU-A1-2 warm target |
| WarmPRTA2 | 7 | Number of PRTs measuring AMSU-A2 warm target |
| Name | Explanation |
| Latitude | Footprint boresight Latitude in degrees North (-90.0 ... 90.0) |
| Longitude | Footprint boresight Longitude in degrees East (-180.0 ... 180.0) |
| Time | Footprint "shutter" TAI Time: floating-point elapsed seconds since Jan 1, 1993 |
| Name | Type | Extra Dimensions | Explanation |
| processing_level | string of 8-bit characters | None | Zero-terminated character string denoting processing level ("level1B") |
| instrument | string of 8-bit characters | None | Zero-terminated character string denoting instrument ("AMSU") |
| DayNightFlag | string of 8-bit characters | None | Zero-terminated character string denoting granule as day and/or night: (Always "Day", "Night", or "Both") |
| AutomaticQAFlag | string of 8-bit characters | None | Zero-terminated character string denoting granule data quality: (Always "Passed", "Failed", or "Suspect") |
| NumTotalData | 32-bit integer | None | Total number of expected data points |
| NumProcessData | 32-bit integer | None | Number of data points which are present and can be processed routinely (state = 0) |
| NumSpecialData | 32-bit integer | None | Number of data points which are present and can be processed only as a special test (state = 1) |
| NumBadData | 32-bit integer | None | Number of data points which are present but cannot be processed (state = 2) |
| NumMissingData | 32-bit integer | None | Number of expected data points which are not present (state = 3) |
| NumLandSurface | 32-bit integer | None | Number of data points for which the surface is more than 90% land |
| NumOceanSurface | 32-bit integer | None | Number of data points for which the surface is less than 10% land |
| node_type | string of 8-bit characters | None | Zero-terminated character string denoting whether granule is ascending, descending, or pole-crossing: ("Ascending" and "Descending" for entirely ascending or entirely descending granules, or "NorthPole" or "SouthPole" for pole-crossing granules) |
| start_year | 32-bit integer | None | Year in which granule started, UTC (e.g. 1999) |
| start_month | 32-bit integer | None | Month in which granule started, UTC (1 ... 12) |
| start_day | 32-bit integer | None | Day of month in which granule started, UTC (1 ... 31) |
| start_hour | 32-bit integer | None | Hour of day in which granule started, UTC (0 ... 23) |
| start_minute | 32-bit integer | None | Minute of hour in which granule started, UTC (0 ... 59) |
| start_sec | 32-bit floating-point | None | Second of minute in which granule started, UTC (0.0 ... 59.0) |
| start_orbit | 32-bit integer | None | Orbit number of mission in which granule started |
| end_orbit | 32-bit integer | None | Orbit number of mission in which granule ended |
| orbit_path | 32-bit integer | None | Orbit path of start orbit (1 ... 233? as defined by EOS project) |
| granule_number | 32-bit integer | None | Number of granule within orbit (1 ... 17?) |
| num_scansets | 32-bit integer | None | Number of scansets in granule (1 ... 45) |
| num_scanlines | 32-bit integer | None | Number of scanlines in granule (1 * num_scansets) |
| start_Latitude | 64-bit floating-point | None | Latitude of spacecraft at start of granule |
| start_Longitude | 64-bit floating-point | None | Longitude of spacecraft at start of granule |
| start_Time | 64-bit floating-point | None | TAI Time at start of granule |
| end_Latitude | 64-bit floating-point | None | Latitude of spacecraft at end of granule |
| end_Longitude | 64-bit floating-point | None | Longitude of spacecraft at end of granule |
| end_Time | 64-bit floating-point | None | TAI Time at end of granule |
| eq_x_longitude | 32-bit floating-point | None | Longitude of spacecraft at southward equator crossing nearest granule start |
| eq_x_tai | 64-bit floating-point | None | Time of eq_x_longitude in TAI units |
| orbitgeoqa | 32-bit integer | None | Orbit Geolocation QA: bit 0 (LSB): bad input value (last scanline); bit 1: bad input value (first scanline); bit 2: PGS_EPH_GetEphMet() returned PGSEPH_E_NO_SC_EPHEM_FILE; bit 3: PGS_EPH_GetEphMet() returned PGSEPH_E_BAD_ARRAY_SIZE; bit 4: PGS_EPH_GetEphMet() returned PGSTD_E_TIME_FMT_ERROR; bit 5: PGS_EPH_GetEphMet() returned PGSTD_E_TIME_VALUE_ERROR; bit 6: PGS_EPH_GetEphMet() returned PGSTD_E_SC_TAG_UNKNOWN; bit 7: PGS_EPH_GetEphMet() returned PGS_E_TOOLKIT; bit 8: PGS_TD_UTCtoTAI() returned PGSTD_E_NO_LEAP_SECS; bit 9: PGS_TD_UTCtoTAI() returned PGSTD_E_TIME_FMT_ERROR; bit 10: PGS_TD_UTCtoTAI() returned PGSTD_E_TIME_VALUE_ERROR; bit 11: PGS_TD_UTCtoTAI() returned PGS_E_TOOLKIT; bit 12: PGS_CSC_DayNight() returned PGSTD_E_NO_LEAP_SECS; bit 13: PGS_CSC_DayNight() returned PGSCSC_E_INVALID_LIMITTAG; bit 14: PGS_CSC_DayNight() returned PGSCSC_E_BAD_ARRAY_SIZE; bit 15: PGS_CSC_DayNight() returned PGSCSC_W_ERROR_IN_DAYNIGHT; bit 16: PGS_CSC_DayNight() returned PGSCSC_W_BAD_TRANSFORM_VALUE; bit 17: PGS_CSC_DayNight() returned PGSCSC_W_BELOW_HORIZON; bit 18: PGS_CSC_DayNight() returned PGSCSC_W_PREDICTED_UT1; bit 19: PGS_CSC_DayNight() returned PGSTD_E_NO_UT1_VALUE; bit 20: PGS_CSC_DayNight() returned PGSTD_E_BAD_INITIAL_TIME; bit 21: PGS_CSC_DayNight() returned PGSCBP_E_TIME_OUT_OF_RANGE; bit 22: PGS_CSC_DayNight() returned PGSCBP_E_UNABLE_TO_OPEN_FILE; bit 22: PGS_CSC_DayNight() returned PGSMEM_E_NO_MEMORY; bit 24: PGS_CSC_DayNight() returned PGS_E_TOOLKIT; bit 25-31: not used |
| num_satgeoqa | 16-bit integer | None | Number of scans with problems in satgeoqa |
| num_glintgeoqa | 16-bit integer | None | Number of scans with problems in glintgeoqa |
| num_moongeoqa | 16-bit integer | None | Number of scans with problems in moongeoqa |
| num_ftptgeoqa | 16-bit integer | None | Number of footprints with problems in ftptgeoqa |
| num_zengeoqa | 16-bit integer | None | Number of footprints with problems in zengeoqa |
| num_demgeoqa | 16-bit integer | None | Number of footprints with problems in demgeoqa |
| num_fpe | 16-bit integer | None | Number of floating point errors |
| LonGranuleCen | 16-bit integer | None | Longitude of the center of the granule in degrees (-180 ... 180) |
| LatGranuleCen | 16-bit integer | None | Latitude of the center of the granule in degrees (-90 ... 90) |
| LocTimeGranuleCen | 16-bit integer | None | Local time at the center of the granule in minutes past midnight (0 ... 1439) |
| center_freq | 32-bit floating-point | Channel (= 15) | Channel Center frequency (GHz) |
| IF_offset_1 | 32-bit floating-point | Channel (= 15) | Offset of first intermediate frequency stage (MHz) (zero for no mixing) |
| IF_offset_2 | 32-bit floating-point | Channel (= 15) | Offset of second intermediate frequency stage (MHz) (zero for no second mixing) |
| bandwidth | 32-bit floating-point | Channel (= 15) | bandwidth of sum of 1, 2, or 4 channels (MHz) |
| num_scanlines_not_norm_mode_a1 | 32-bit integer | None | Number of scanlines not in Process state (AMSU A1) |
| num_scanlines_not_norm_mode_a2 | 32-bit integer | None | Number of scanlines not in Process state (AMSU A2) |
| num_calibrated_scanlines | 32-bit integer | Channel (= 15) | Number of scanlines that had calibration coefs applied |
| num_missing_scanlines_a1 | 32-bit integer | None | Number of scanlines with state = missing (AMSU A1) |
| num_missing_scanlines_a2 | 32-bit integer | None | Number of scanlines with state = missing (AMSU A2) |
| num_data_gaps_a1 | 32-bit integer | None | Number of blocks of scanlines where State is not Process (AMSU A1) |
| num_data_gaps_a2 | 32-bit integer | None | Number of blocks of scanlines where State is not Process (AMSU A2) |
| num_instr_mode_changes_a1 | 32-bit integer | None | Number of operational instrument mode changes (AMSU A1) |
| num_instr_mode_changes_a2 | 32-bit integer | None | Number of operational instrument mode changes (AMSU A2) |
| num_scanlines_rec_cal_prob_a11 | 32-bit integer | None | Number of scanlines with non-zero qa_receiver (AMSU A11) |
| num_scanlines_rec_cal_prob_a12 | 32-bit integer | None | Number of scanlines with non-zero qa_receiver (AMSU A12) |
| num_scanlines_rec_cal_prob_a2 | 32-bit integer | None | Number of scanlines with non-zero qa_receiver (AMSU A2) |
| num_scanlines_ch_cal_problems | 32-bit integer | Channel (= 15) | Number of scanlines with non-zero qa_channel |
| num_scanlines_sig_coast_xing | 32-bit integer | None | Number of scanlines with qa_scanline coast crossing bit set |
| num_scanlines_sig_sun_glint | 32-bit integer | None | Number of scanlines with qa_scanline sun glint bit set |
| MoonInViewMWCount | 32-bit integer | None | Number of scanlines in granule with the moon in the Microwave space view |
| QA_unfiltered_scene_count | Unlimited Engineering Struct (see below) | GeoXTrack (= 30) * Channel (= 15) | Per footprint position raw scene count summary QA |
| QA_unfiltered_warm_count | Unlimited Engineering Struct (see below) | Channel (= 15) | Raw warm count summary QA (unfiltered) |
| QA_unfiltered_cold_count | Unlimited Engineering Struct (see below) | Channel (= 15) | Raw cold count summary QA (unfiltered) |
| QA_bb_PRT_a11 | Limited Engineering Struct (see below) | None | Blackbody PRT temperature summary QA (AMSU A11) (C) |
| QA_bb_PRT_a12 | Limited Engineering Struct (see below) | None | Blackbody PRT temperature summary QA (AMSU A12) (C) |
| QA_bb_PRT_a2 | Limited Engineering Struct (see below) | None | Blackbody PRT temperature summary QA (AMSU A2) (C) |
| QA_rec_PRT_a11 | Limited Engineering Struct (see below) | None | Receiver PRT temperature summary QA (AMSU A11) (C) |
| QA_rec_PRT_a12 | Limited Engineering Struct (see below) | None | Receiver PRT temperature summary QA (AMSU A12) (C) |
| QA_rec_PRT_a2 | Limited Engineering Struct (see below) | None | Receiver PRT temperature summary QA (AMSU A2) (C) |
| QA_cal_coef_a0 | Unlimited Engineering Struct (see below) | Channel (= 15) | Calibration coefficient a0 summary QA (K) |
| QA_cal_coef_a1 | Unlimited Engineering Struct (see below) | Channel (= 15) | Calibration coefficient a1 summary QA (K/count) |
| QA_cal_coef_a2 | Unlimited Engineering Struct (see below) | Channel (= 15) | Calibration coefficient a2 summary QA (K/count**2) |
| QA_bb_raw_noise_counts | Unlimited Engineering Struct (see below) | Channel (= 15) | Summary QA on differences between warm cal counts |
| QA_sv_raw_noise_counts | Unlimited Engineering Struct (see below) | Channel (= 15) | Summary QA on differences between cold cal counts |
| QA_NeDT | Unlimited Engineering Struct (see below) | Channel (= 15) | Summary QA on gain * differences between warm cal counts (K) |
| QA_NeDT2NomRatio | Unlimited Engineering Struct (see below) | Channel (= 15) | Summary QA on gain * differences between warm cal counts over nominal NeDT (unitless) |
| granules_present | string of 8-bit characters | None | Zero-terminated character string denoting which adjacent granules were available for smoothing ("All" for both previous & next, "Prev" for previous but not next, "Next" for next but not previous, "None" for neither previous nor next) |
| Name | Type | Extra Dimensions | Explanation |
| satheight | 32-bit floating-point | None | Satellite altitude at nadirTAI in km above reference ellipsoid (e.g. 725.2) |
| satroll | 32-bit floating-point | None | Satellite attitude roll angle at nadirTAI (-180.0 ... 180.0 angle about the +x (roll) ORB axis, +x axis is positively oriented in the direction of orbital flight completing an orthogonal triad with y and z.) |
| satpitch | 32-bit floating-point | None | Satellite attitude pitch angle at nadirTAI (-180.0 ... 180.0 angle about +y (pitch) ORB axis. +y axis is oriented normal to the orbit plane with the positive sense opposite to that of the orbit's angular momentum vector H.) |
| satyaw | 32-bit floating-point | None | Satellite attitude yaw angle at nadirTAI (-180.0 ... 180.0 angle about +z (yaw) axis. +z axis is positively oriented earthward parallel to the satellite radius vector R from the spacecraft center of mass to the center of the Earth.) |
| satgeoqa | 32-bit integer | None | Satellite Geolocation QA flags: bit 0 (LSB): bad input value; bit 1: PGS_TD_TAItoUTC() returned PGSTD_E_NO_LEAP_SECS; bit 2: PGS_TD_TAItoUTC() returned PGS_E_TOOLKIT; bit 3: PGS_EPH_EphemAttit() returned PGSEPH_W_BAD_EPHEM_VALUE; bit 4: PGS_EPH_EphemAttit() returned PGSEPH_E_BAD_EPHEM_FILE_HDR; bit 5: PGS_EPH_EphemAttit() returned PGSEPH_E_NO_SC_EPHEM_FILE; bit 6: PGS_EPH_EphemAttit() returned PGSEPH_E_NO_DATA_REQUESTED; bit 7: PGS_EPH_EphemAttit() returned PGSTD_E_SC_TAG_UNKNOWN; bit 8: PGS_EPH_EphemAttit() returned PGSEPH_E_BAD_ARRAY_SIZE; bit 9: PGS_EPH_EphemAttit() returned PGSTD_E_TIME_FMT_ERROR; bit 10: PGS_EPH_EphemAttit() returned PGSTD_E_TIME_VALUE_ERROR; bit 11: PGS_EPH_EphemAttit() returned PGSTD_E_NO_LEAP_SECS; bit 12: PGS_EPH_EphemAttit() returned PGS_E_TOOLKIT; bit 13: PGS_CSC_ECItoECR() returned PGSCSC_W_BAD_TRANSFORM_VALUE; bit 14: PGS_CSC_ECItoECR() returned PGSCSC_E_BAD_ARRAY_SIZE; bit 15: PGS_CSC_ECItoECR() returned PGSTD_E_NO_LEAP_SECS; bit 16: PGS_CSC_ECItoECR() returned PGSTD_E_TIME_FMT_ERROR; bit 17: PGS_CSC_ECItoECR() returned PGSTD_E_TIME_VALUE_ERROR; bit 18: PGS_CSC_ECItoECR() returned PGSCSC_W_PREDICTED_UT1; bit 19: PGS_CSC_ECItoECR() returned PGSTD_E_NO_UT1_VALUE; bit 20: PGS_CSC_ECItoECR() returned PGS_E_TOOLKIT; bit 21: PGS_CSC_ECRtoGEO() returned PGSCSC_W_TOO_MANY_ITERS; bit 22: PGS_CSC_ECRtoGEO() returned PGSCSC_W_INVALID_ALTITUDE; bit 23: PGS_CSC_ECRtoGEO() returned PGSCSC_W_SPHERE_BODY; bit 24: PGS_CSC_ECRtoGEO() returned PGSCSC_W_LARGE_FLATTENING; bit 25: PGS_CSC_ECRtoGEO() returned PGSCSC_W_DEFAULT_EARTH_MODEL; bit 26: PGS_CSC_ECRtoGEO() returned PGSCSC_E_BAD_EARTH_MODEL; bit 27: PGS_CSC_ECRtoGEO() returned PGS_E_TOOLKIT; bit 28-31: not used |
| glintgeoqa | 16-bit integer | None | Glint Geolocation QA flags: bit 0 (LSB): bad input value; bit 1: PGS_CBP_Earth_CB_Vector() returned PGSCBP_W_EARTH_CB_ID; bit 2: PGS_CBP_Earth_CB_Vector() returned PGSCBP_E_INVALID_CB_ID; bit 3: PGS_CBP_Earth_CB_Vector() returned PGSTD_E_BAD_INITIAL_TIME; bit 4: PGS_CBP_Earth_CB_Vector() returned PGSCBP_E_BAD_ARRAY_SIZE; bit 5: PGS_CBP_Earth_CB_Vector() returned PGSCBP_E_UNABLE_TO_OPEN_FILE; bit 6: PGS_CBP_Earth_CB_Vector() returned PGSCBP_E_TIME_OUT_OF_RANGE; bit 7: PGS_CBP_Earth_CB_Vector() returned PGSTD_E_NO_LEAP_SECS; bit 8: PGS_CBP_Earth_CB_Vector() returned PGSCBP_W_BAD_CB_VECTOR; bit 9: PGS_CBP_Earth_CB_Vector() returned PGS_E_TOOLKIT; bit 10: PGS_CSC_ECItoECR() returned any 'W' class return code (for Glint); bit 11: PGS_CSC_ECItoECR() returned any 'E' class return code (for Glint); bit 12: PGS_CSC_ECRtoGEO() returned any 'W' class return code (for Glint); bit 13: PGS_CSC_ECRtoGEO() returned any 'E' class return code (for Glint); bit 14: PGS_CSC_ECItoECR() returned any 'W' class return code (for Sun); bit 15: PGS_CSC_ECItoECR() returned any 'E' class return code (for Sun) |
| moongeoqa | 16-bit integer | None | Moon Geolocation QA flags: bit 0: bad input value; bit 1: PGS_TD_TAItoUTC() returned PGSTD_E_NO_LEAP_SECS; bit 2: PGS_TD_TAItoUTC() returned PGS_E_TOOLKIT; bit 3: PGS_CBP_Sat_CB_Vector() returned PGSCSC_W_BELOW_SURFACE; bit 4: PGS_CBP_Sat_CB_Vector() returned PGSCBP_W_BAD_CB_VECTOR; bit 5: PGS_CBP_Sat_CB_Vector() returned PGSCBP_E_BAD_ARRAY_SIZE; bit 6: PGS_CBP_Sat_CB_Vector() returned PGSCBP_E_INVALID_CB_ID; bit 7: PGS_CBP_Sat_CB_Vector() returned PGSMEM_E_NO_MEMORY; bit 8: PGS_CBP_Sat_CB_Vector() returned PGSCBP_E_UNABLE_TO_OPEN_FILE; bit 9: PGS_CBP_Sat_CB_Vector() returned PGSTD_E_BAD_INITIAL_TIME; bit 10: PGS_CBP_Sat_CB_Vector() returned PGSCBP_E_TIME_OUT_OF_RANGE; bit 11: PGS_CBP_Sat_CB_Vector() returned PGSTD_E_SC_TAG_UNKNOWN; bit 12: PGS_CBP_Sat_CB_Vector() returned PGSEPH_E_BAD_EPHEM_FILE_HDR; bit 13: PGS_CBP_Sat_CB_Vector() returned PGSEPH_E_NO_SC_EPHEM_FILE; bit 14: PGS_CBP_Sat_CB_Vector() returned PGS_E_TOOLKIT; bit 15: not used |
| nadirTAI | 64-bit floating-point | None | TAI time at which instrument is nominally looking directly down. (between footprints 15 & 16 for AMSU or between footprints 45 & 46 for AIRS/Vis & HSB) |
| sat_lat | 64-bit floating-point | None | Satellite latitude in degrees (-90.0 ... 90.0) |
| sat_lon | 64-bit floating-point | None | Satellite longitude in degrees (-180.0 ... 180.0) |
| scan_node_type | 8-bit integer | None | 'A' for ascending, 'D' for descending, 'N' for North-Polar, 'S' for South-Polar |
| glintlat | 32-bit floating-point | None | Solar glint latitude in degrees at nadirTAI (-90.0 ... 90.0) |
| glintlon | 32-bit floating-point | None | Solar glint longitude in degrees at nadirTAI (-180.0 ... 180.0) |
| state1 | 32-bit integer | None | Data state for AMSU-A1: 0:Process, 1:Special, 2:Erroneous, 3:Missing |
| state2 | 32-bit integer | None | Data state for AMSU-A2: 0:Process, 1:Special, 2:Erroneous, 3:Missing |
| cal_coef_a0 | 32-bit floating-point | Channel (= 15) | Calibration coefficients to convert raw counts to antenna temperature (K) |
| cal_coef_a1 | 32-bit floating-point | Channel (= 15) | Calibration coefficients to convert raw counts to antenna temperature (K/count) |
| cal_coef_a2 | 32-bit floating-point | Channel (= 15) | Calibration coefficients to convert raw counts to antenna temperature (K/count**2) |
| cal_coef_a0_err | 32-bit floating-point | Channel (= 15) | Error estimate for cal_coef_a0 (K) |
| cal_coef_a1_err | 32-bit floating-point | Channel (= 15) | Error estimate for cal_coef_a1 (K/count) |
| cal_coef_a2_err | 32-bit floating-point | Channel (= 15) | Error estimate for cal_coef_a2 (K/count**2) |
| a1_ColdCalPstion | 8-bit integer | None | AMSU-A1 Cold Calibration Position 1-4 (Binary 0-3) |
| a2_ColdCalPstion | 8-bit integer | None | AMSU-A2 Cold Calibration Position 1-4 (Binary 0-3) |
| a1_PLO_Redundncy | 8-bit integer | None | AMSU-A1 PLO Redundancy, PLLO 1 ON or PLLO 2 ON |
| a11_mux_temp_used | 8-bit integer | None | AMSU-A1-1 MUX Temperature use flag. (1: used MUX temperature for AMSU-A1 receiver temperature; 0: used RF shelf temperature) |
| a11_receiver_temp | 32-bit floating-point | None | AMSU-A1-1 receiver temperature used in calibration (MUX temperature or RF shelf temperature as specified by a11_mux_temp_used) (C) |
| a11_target_temp | 32-bit floating-point | None | AMSU-A1-1 target temperature used in calibration (C) |
| a12_mux_temp_used | 8-bit integer | None | AMSU-A1-2 MUX Temperature use flag. (1: used MUX temperature for AMSU-A1 receiver temperature; 0: used RF shelf temperature) |
| a12_receiver_temp | 32-bit floating-point | None | AMSU-A1-2 receiver temperature used in calibration (MUX temperature or RF shelf temperature as specified by a12_mux_temp_used) (C) |
| a12_target_temp | 32-bit floating-point | None | AMSU-A1-2 target temperature used in calibration (C) |
| a2_diplexer_temp_used | 8-bit integer | None | AMSU-A2 diplexer Temperature use flag. (1: used diplexer temperature for AMSU-A2 receiver temperature; 0: used RF shelf temperature) |
| a2_receiver_temp | 32-bit floating-point | None | AMSU-A2 receiver temperature used in calibration (diplexer temperature or RF shelf temperature as specified by a2_mux_temp_used) (C) |
| a2_target_temp | 32-bit floating-point | None | AMSU-A2 target temperature used in calibration (C) |
| qa_scanline | 8-bit integer | None | Scanline bitmap for AMSU: Bit 0: Sun glint in this scanline; Bit 1: Coastal crossing in this scanline; Bit 2: Some channels had excessive NeDT estimate; Bit 3: Near sidelobe correction applied |
| qa_receiver_a11 | 8-bit integer | None | Receiver bitmap for AMSU-A1-1: Bit 0: Calibration was not derived, due to the instrument mode; Bit 1: Calibration was not derived, due to bad or missing PRT values; Bit 2: This scanline was calibrated, but the moon was in the space view; Bit 3: This scanline was calibrated, but there was a space view scan position err; Bit 4: This scanline was calibrated, but there was a blackbody scan position error; Bit 5: This scanline was calibrated, but some PRT values were bad or marginal; Bit 6: This scanline was calibrated, but there was a data gap; Bit 7: Some channels were not calibrated |
| qa_receiver_a12 | 8-bit integer | None | Receiver bitmap for AMSU-A1-2:Same fields as defined for qa_receiver_a11 |
| qa_receiver_a2 | 8-bit integer | None | Receiver bitmap for AMSU-A2:Same fields as defined for qa_receiver_a11 |
| qa_channel | 8-bit integer | Channel (= 15) | Channel bitmap for AMSU: Bit 0: All space view counts were bad for this channel and scanline; Bit 1: Space view counts were marginal for this channel and scanline; Bit 2: Space view counts could not be smoothed; Bit 3: All blackbody counts were bad for this channel and scanline; Bit 4: Blackbody counts were marginal for this channel and scanline; Bit 5: Blackbody counts could not be smoothed; Bit 6: Most recent calibration coefficients used; Bit 7: Excessive NeDT estimated |
| Name | Type | Extra Dimensions | Explanation |
| scanang | 32-bit floating-point | None | Scanning angle of AMSU instrument for this footprint (-180.0 ... 180.0) |
| ftptgeoqa | 32-bit integer | None | Footprint Geolocation QA flags: bit 0 (LSB): bad input value; bit 1: PGS_TD_TAItoUTC() returned PGSTD_E_NO_LEAP_SECS; bit 2: PGS_TD_TAItoUTC() returned PGS_E_TOOLKIT; bit 3: PGS_CSC_GetFOV_Pixel() returned PGSCSC_W_MISS_EARTH; bit 4: PGS_CSC_GetFOV_Pixel() returned PGSTD_E_SC_TAG_UNKNOWN; bit 5: PGS_CSC_GetFOV_Pixel() returned PGSCSC_W_ZERO_PIXEL_VECTOR; bit 6: PGS_CSC_GetFOV_Pixel() returned PGSCSC_W_BAD_EPH_FOR_PIXEL; bit 7: PGS_CSC_GetFOV_Pixel() returned PGSCSC_W_INSTRUMENT_OFF_BOARD; bit 8: PGS_CSC_GetFOV_Pixel() returned PGSCSC_W_BAD_ACCURACY_FLAG; bit 9: PGS_CSC_GetFOV_Pixel() returned PGSCSC_E_BAD_ARRAY_SIZE; bit 10: PGS_CSC_GetFOV_Pixel() returned PGSCSC_W_DEFAULT_EARTH_MODEL; bit 11: PGS_CSC_GetFOV_Pixel() returned PGSCSC_W_DATA_FILE_MISSING; bit 12: PGS_CSC_GetFOV_Pixel() returned PGSCSC_E_NEG_OR_ZERO_RAD; bit 13: PGS_CSC_GetFOV_Pixel() returned PGSMEM_E_NO_MEMORY; bit 14: PGS_CSC_GetFOV_Pixel() returned PGSTD_E_NO_LEAP_SECS; bit 15: PGS_CSC_GetFOV_Pixel() returned PGSTD_E_TIME_FMT_ERROR; bit 16: PGS_CSC_GetFOV_Pixel() returned PGSTD_E_TIME_VALUE_ERROR; bit 17: PGS_CSC_GetFOV_Pixel() returned PGSCSC_W_PREDICTED_UT1; bit 18: PGS_CSC_GetFOV_Pixel() returned PGSTD_E_NO_UT1_VALUE; bit 19: PGS_CSC_GetFOV_Pixel() returned PGS_E_TOOLKIT; bit 20: PGS_CSC_GetFOV_Pixel() returned PGSEPH_E_BAD_EPHEM_FILE_HDR; bit 21: PGS_CSC_GetFOV_Pixel() returned PGSEPH_E_NO_SC_EPHEM_FILE; bit 22-31: not used |
| zengeoqa | 16-bit integer | None | Satellite zenith Geolocation QA flags: bit 0 (LSB): (Spacecraft) bad input value; bit 1: PGS_CSC_ZenithAzimuth(S/C) returned PGSCSC_W_BELOW_HORIZON; bit 2: PGS_CSC_ZenithAzimuth(S/C) returned PGSCSC_W_UNDEFINED_AZIMUTH; bit 3: PGS_CSC_ZenithAzimuth(S/C) returned PGSCSC_W_NO_REFRACTION; bit 4: PGS_CSC_ZenithAzimuth(S/C) returned PGSCSC_E_INVALID_VECTAG; bit 5: PGS_CSC_ZenithAzimuth(S/C) returned PGSCSC_E_LOOK_PT_ALTIT_RANGE; bit 6: PGS_CSC_ZenithAzimuth(S/C) returned PGSCSC_E_ZERO_INPUT_VECTOR; bit 7: PGS_CSC_ZenithAzimuth(S/C) returned PGS_E_TOOLKIT; bit 8: (Sun) bad input value; bit 9: (suppressed) PGS_CSC_ZenithAzimuth(Sun) returned PGSCSC_W_BELOW_HORIZON (This is not an error condition - the sun is below the horizon at night); bit 10: PGS_CSC_ZenithAzimuth(Sun) returned PGSCSC_W_UNDEFINED_AZIMUTH; bit 11: PGS_CSC_ZenithAzimuth(Sun) returned PGSCSC_W_NO_REFRACTION; bit 12: PGS_CSC_ZenithAzimuth(Sun) returned PGSCSC_E_INVALID_VECTAG; bit 13: PGS_CSC_ZenithAzimuth(Sun) returned PGSCSC_E_LOOK_PT_ALTIT_RANGE; bit 14: PGS_CSC_ZenithAzimuth(Sun) returned PGSCSC_E_ZERO_INPUT_VECTOR; bit 15: PGS_CSC_ZenithAzimuth(Sun) returned PGS_E_TOOLKIT |
| demgeoqa | 16-bit integer | None | Digital Elevation Model (DEM) Geolocation QA flags: bit 0 (LSB): bad input value; bit 1: Could not allocate memory; bit 2: Too close to North or South pole. Excluded; bit 3: Layer resolution incompatibility. Excluded; bit 4: Any DEM Routine (elev) returned PGSDEM_E_IMPROPER_TAG; bit 5: Any DEM Routine (elev) returned PGSDEM_E_CANNOT_ACCESS_DATA; bit 6: Any DEM Routine (land/water) returned PGSDEM_E_IMPROPER_TAG; bit 7: Any DEM Routine (land/water) returned PGSDEM_E_CANNOT_ACCESS_DATA; bit 8: Reserved for future layers; bit 9: Reserved for future layers; bit 10: PGS_DEM_GetRegion(elev) returned PGSDEM_M_FILLVALUE_INCLUDED; bit 11: PGS_DEM_GetRegion(land/water) returned PGSDEM_M_FILLVALUE_INCLUDED; bit 12: Reserved for future layers; bit 13: PGS_DEM_GetRegion(all) returned PGSDEM_M_MULTIPLE_RESOLUTIONS; bit 14: PGS_CSC_GetFOV_Pixel() returned any 'W' class return code; bit 15: PGS_CSC_GetFOV_Pixel() returned any 'E' class return code |
| satzen | 32-bit floating-point | None | Spacecraft zenith angle (0.0 ... 180.0 degrees from zenith GEO) |
| satazi | 32-bit floating-point | None | Spacecraft azimuth angle (-180.0 ... 180.0 degrees E of N GEO) |
| solzen | 32-bit floating-point | None | Solar zenith angle (0.0 ... 180.0 degrees from zenith GEO) |
| solazi | 32-bit floating-point | None | Solar azimuth angle (-180.0 ... 180.0 degrees E of N GEO) |
| sun_glint_distance | 16-bit integer | None | Distance (km) from footprint center to location of the sun glint |
| topog | 32-bit floating-point | None | Mean topography in meters above reference ellipsoid |
| topog_err | 32-bit floating-point | None | Error estimate for topog |
| landFrac | 32-bit floating-point | None | Fraction of spot that is land (0.0 ... 1.0) |
| landFrac_err | 32-bit floating-point | None | Error estimate for landFrac |
| brightness_temp | 32-bit floating-point | Channel (= 15) | Radiances for each channel as brightness temperatures in Kelvins (Channel 1: 23.8 GHz; Ch 2: 31.4 GHz; Ch 3: 50.3 GHz; Ch 4: 52.8 GHz; Ch 5: 53.596 +/- 115 GHz; Ch 6: 54.4 GHz; Ch 7: 54.94 GHz; Ch 8: 55.5 GHz; Ch 9: f0; Ch 10: f0 +/- 0.217 GHz Ch 11: f0 +/- df +/- 48 MHz; Ch 12: f0 +/- df +/- 22 MHz; Ch 13: f0 +/- df +/- 10 MHz; Ch 14: f0 +/- df +/- 4.5 MHz; Ch 15: 89 GHz (f0 = 57290.344 MHZ; df = 322.4 MHz)) |
| brightness_temp_err | 32-bit floating-point | Channel (= 15) | Error in brightness_temp (K) |
Limited Engineering Struct: This type is used for engineering data fields for which there are known "yellow" limits
| Field Name | Type | Explanation |
| min | 32-bit floating-point | Minimum value field takes on in granule (not valid when num_in = 0) |
| max | 32-bit floating-point | Maximum value field takes on in granule (not valid when num_in = 0) |
| mean | 32-bit floating-point | Mean of in-range values field takes on in granule (not valid when num_in = 0) |
| dev | 32-bit floating-point | Standard Deviation of in-range values field takes on in granule (not valid when num_in = 0) |
| num_in | 32-bit integer | Count of in-range values field takes on in granule |
| num_lo | 32-bit integer | Count of out-of-range low values field takes on in granule |
| num_hi | 32-bit integer | Count of out-of-range high values field takes on in granule |
| num_bad | 32-bit integer | Count of occassions on which field takes on invalid flag value (-9999) in granule |
| range_min | 32-bit floating-point | Minimum in-range value. Any value less than this is counted in num_lo and is not used in the calculation of mean & dev. |
| range_max | 32-bit floating-point | Maximum in-range value. Any value greater than this is counted in num_hi and is not used in the calculation of mean & dev. |
| missing | 8-bit integer | Missing limits flags. Bit 0 (LSB) is 1 when yellow low (range_min) limit is missing; Bit 1 is high when yellow high (range_max) limit is missing; other bits unused, set to 0. |
| max_track | 32-bit integer | GeoTrack index (counting from 1) where max was found |
| max_xtrack | 32-bit integer | GeoXTrack index (counting from 1) where max was found |
| min_track | 32-bit integer | GeoTrack index (counting from 1) where min was found |
| min_xtrack | 32-bit integer | GeoXTrack index (counting from 1) where min was found |
Unlimited Engineering Struct: This type is used for engineering data fields for which there are NOT known "yellow" limits
| Field Name | Type | Explanation |
| min | 32-bit floating-point | Minimum value field takes on in granule (not valid when num = 0) |
| max | 32-bit floating-point | Maximum value field takes on in granule (not valid when num = 0) |
| mean | 32-bit floating-point | Mean of values field takes on in granule (not valid when num = 0) |
| dev | 32-bit floating-point | Standard Deviation of values field takes on in granule (not valid when num = 0) |
| num | 32-bit integer | Count of occurrences of field in granule (not including those counted in num_bad) |
| num_bad | 32-bit integer | Count of occassions on which field takes on invalid flag value (-9999) in granule |
| max_track | 32-bit integer | GeoTrack index (counting from 1) where max was found |
| max_xtrack | 32-bit integer | GeoXTrack index (counting from 1) where max was found |
| min_track | 32-bit integer | GeoTrack index (counting from 1) where min was found |
| min_xtrack | 32-bit integer | GeoXTrack index (counting from 1) where min was found |