| id | field name | definition |
|---|
| 0 | dsr_time |
| binary time | size: 12 |
|---|
Start Time of DSR
unit: "s since 2000-01-01"
value: float(./days) * 86400 + float(./seconds) + float(./microseconds) / 1000000
| binary record | size: 12 |
|---|
ENVISAT binary datetime
| id | field name | definition |
|---|
| 0 | days |
| binary int32 | size: 4 |
|---|
days since January 1st, 2000 (may be negative)
unit: "days since 2000-01-01"
|
|
| 1 | seconds |
| binary uint32 | size: 4 |
|---|
seconds since start of day
unit: "s"
|
|
| 2 | microseconds |
| binary uint32 | size: 4 |
|---|
microseconds since start of second
unit: "1e-6 s"
|
|
|
|
|
| 1 | dsr_length |
| binary uint32 | size: 4 |
|---|
Length of this DSR in bytes
unit: "bytes"
|
|
| 2 | quality_flag |
| binary int8 | size: 1 |
|---|
|
Quality Indicator (-1 if empty DSR)
|
|
| 3 | integr_time |
| binary uint16 (double) | size: 2 |
|---|
Integration time for this DSR
unit: "1/16 s"
converted unit: "s" (multiply by 1/16)
|
|
| 4 | num_vcd |
| binary uint16 | size: 2 |
|---|
|
Number of vertical column densities
|
|
| 5 | vcd |
| binary array[dim_0] |
|---|
Vertical column density (VCD)
dim_0: int(../num_vcd)
| binary float | size: 4 |
|---|
|
unit: "molecules/cm2"
|
|
|
| 6 | vcd_err |
| binary array[dim_0] |
|---|
Error on the VCD above
dim_0: int(../num_vcd)
| binary float | size: 4 |
|---|
|
unit: ""
|
|
|
| 7 | flag_vcd_flags |
| binary uint16 | size: 2 |
|---|
|
Flag describing the VCD output above. Bit description for DOAS = 0: no - yes extended field-of-view calculation; 1: no - yes maximum SZA reached, VCD computation impossible; 2: no - yes no weighting of AMFs over footprint; 3: no - yes linear weighting of AMFs over footprint; 4: no - yes parabolic weighting of AMFs over footprint; 5-15: not used at present. For AMC-DOAS (retrieval of H2O) flag 2 is set to 'true', all others to 'false'. Bit description for IAS = 0: no - yes convergence reached; 1: no - yes sza lower than limit (currently 80 deg); 2: no - yes residual norm lower than limit (currently 4); 3: no - yes maximum absolute value of residual lower than limit (currently 2); 4: no - yes error weighting used; 5: no - yes ratioed measurements used; 6-nn: alpha between bounds and |alpha| < limit, a pair of flags for each gas (alpha currently 0.5)
|
|
| 8 | slant_col_den |
| binary float | size: 4 |
|---|
Effective slant column density of the main parameter
unit: "molecules/cm2"
|
|
| 9 | err_slant_col |
| binary float | size: 4 |
|---|
Error on effective slant column density above
unit: ""
|
|
| 10 | num_linear_param |
| binary uint16 | size: 2 |
|---|
|
Number of linear fitted parameters
|
|
| 11 | num_non_linear_param |
| binary uint16 | size: 2 |
|---|
|
Number of non-linear fitted parameters
|
|
| 12 | linear_fit_param |
| binary array[dim_0] |
|---|
Linear fitted parameters
dim_0: int(../num_linear_param)
|
|
| 13 | linear_fit_param_err |
| binary array[dim_0] |
|---|
Error on linear fitted parameters
dim_0: int(../num_linear_param)
| binary float | size: 4 |
|---|
|
unit: ""
|
|
|
| 14 | linear_fit_cross_corr |
| binary array[dim_0] |
|---|
Cross-correlation matrix entries of the linear fit
dim_0: int(../num_linear_param) * (int(../num_linear_param) - 1) / 2
|
|
| 15 | non_linear_fit_param |
| binary array[dim_0] |
|---|
Non-linear fitted parameters
dim_0: int(../num_non_linear_param)
|
|
| 16 | non_linear_fit_param_err |
| binary array[dim_0] |
|---|
Error on non-linear fitted parameters
dim_0: int(../num_non_linear_param)
| binary float | size: 4 |
|---|
|
unit: ""
|
|
|
| 17 | non_linear_fit_cross_corr |
| binary array[dim_0] |
|---|
Cross-correlation entries of the non-linear fit
dim_0: int(../num_non_linear_param) * (int(../num_non_linear_param) - 1) / 2
|
|
| 18 | rms_fit |
| binary float | size: 4 |
|---|
|
RMS of fit for the fitting window
|
|
| 19 | chi_2_fit |
| binary float | size: 4 |
|---|
|
Chi^2 of the fit
|
|
| 20 | goodness_fit |
| binary float | size: 4 |
|---|
|
Goodness of the fit
|
|
| 21 | iter_num |
| binary uint16 | size: 2 |
|---|
|
Iteration number for the fitting window
|
|
| 22 | fit_flags |
| binary uint16 | size: 2 |
|---|
|
Flags describing the above data for linear and non-linear fit. Bit definition = 0: no - yes smoothing of measurements; 1: no - yes error weighting of fitting; 2: no - yes use of ratioed measurements; 3: no - yes use of pre-convoluted cross-sections; 4: no - yes convolution of cross-sections; 5: no - yes convolution on measurement grid; 6: literature - SCIAMACHY cross-sections used; 7: linear - non-linear fitting; 8: no - yes use of SO2 corection; 9-11: quality, to be interpreted as 3 bit integer, 0 lowest quality, 7 highest quality; 12-15: not used at present
|
|
| 23 | amf_gr |
| binary float | size: 4 |
|---|
|
AMF to ground for species
|
|
| 24 | amf_gr_err |
| binary float | size: 4 |
|---|
Error on AMF to ground
unit: ""
|
|
| 25 | amf_cl |
| binary float | size: 4 |
|---|
|
AMF to cloud-top for species
|
|
| 26 | amf_cl_err |
| binary float | size: 4 |
|---|
Error on AMF to cloud-top
unit: ""
|
|
| 27 | flag_amf_flags |
| binary uint16 | size: 2 |
|---|
|
Flags describing the AMF data above: Bit definition = 0: clear - clear & cloud look-up; 1: one AMF value - extended field-of-view; 2: continental - maritime aerosol present; 3: no - yes maximum SZA exceeded; 4-15: not used at present
|
|
| 28 | temp_ref |
| binary float | size: 4 |
|---|
Temperature of reference spectrum
unit: "K"
|
|