id | field name | definition |
0 | dsr_time |
binary time | size: 12 |
Time of creation
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 | spec_ev_switch |
binary uint8 | size: 1 |
Switch for processing of special events
|
|
2 | spare_1 |
binary bytes | size: 2 |
Spare
|
hidden: true
|
3 | max_path_diff |
binary double | size: 8 |
Maximum optical path difference
unit: "cm"
|
|
4 | ref_char |
binary int8 | size: 1 |
Reference character to be compared with PCD
|
|
5 | spike_thresh |
binary uint32 | size: 4 |
Threshold of spike location wrt ZPD
|
|
6 | spike_thresh_rms |
binary double | size: 8 |
Threshold for maximum rms amplitude of spikes
|
|
7 | laser_wvn |
binary double | size: 8 |
Wavenumber of laser
unit: "1/cm"
|
|
8 | spare_2 |
binary bytes | size: 4 |
Spare
|
hidden: true
|
9 | num_fr_counts |
binary uint32 | size: 4 |
Number of fringe counts valid for nominal measurement at MPD
|
|
10 | num_nesr_thresh |
binary uint16 | size: 2 |
Number of NESR thresholds
|
|
11 | wvn_nesr_thresh1 |
binary double | size: 8 |
Wavenumber related to the first NESR threshold
unit: "1/cm"
|
|
12 | wvn_nesr_thresh2 |
binary double | size: 8 |
Wavenumber related to the last NESR threshold
unit: "1/cm"
|
|
13 | nesr_thresh |
binary array[dim_0] |
Vector containing NESR thresholds
dim_0: int(../num_nesr_thresh)
binary double | size: 8 |
unit: "W/(cm2.sr.1/cm)"
|
|
|
14 | max_mw |
binary uint16 | size: 2 |
Maximum number of microwindows used in retrieval
|
|
15 | trop_alt_coeff_a |
binary double | size: 8 |
Coefficient A for Tropopause Altitude Correction
unit: "km"
|
|
16 | trop_alt_coeff_b |
binary double | size: 8 |
Coefficient B for Tropopause Altitude Correction
unit: "km"
|
|
17 | trop_alt_coeff_c |
binary double | size: 8 |
Coefficient C for Tropopause Altitude Correction
unit: "km"
|
|
18 | spare_3 |
binary bytes | size: 62 |
Spare
|
hidden: true
|
19 | spec_res_coarse |
binary double | size: 8 |
Spectral resolution of the general coarse wavenumber grid
unit: "1/cm"
|
|
20 | max_dev |
binary double | size: 8 |
Maximum allowed deviation between input grid and general coarse wavenumber grid
unit: "1/cm"
|
|
21 | num_sinc |
binary uint16 | size: 2 |
Number of sinc interpolation coefficients
|
|
22 | num_off |
binary int16 | size: 2 |
Number of offsets used for interpolation
|
|
23 | num_coef |
binary uint16 | size: 2 |
Number of coefficients defining analytical Norton-Beer apodisation function
|
|
24 | coef |
binary array[dim_0] |
Coefficients of analytical Norton-Beer apodisation function
dim_0: int(../num_coef)
|
|
25 | num_wvn |
binary uint16 | size: 2 |
Number of wavenumbers at which the ILS has been characterised
|
|
26 | wnm |
binary array[dim_0] |
Vector containing wavenumbers at which the ILS has been characterised
dim_0: int(../num_wvn)
binary double | size: 8 |
unit: "1/cm"
|
|
|
27 | lin_shear_var |
binary array[dim_0] |
Vector containing for each wavenumber the linear shear variation along Z vs. OPD
dim_0: int(../num_wvn)
binary double | size: 8 |
unit: "cm"
|
|
|
28 | ir_misalign |
binary array[dim_0] |
Vector containing for each wavenumber the systematic IR misalignment along Y
dim_0: int(../num_wvn)
binary double | size: 8 |
unit: "rad"
|
|
|
29 | spec_res_fine |
binary double | size: 8 |
Spectral resolution of the general fine wavenumber grid
unit: "1/cm"
|
|
30 | req_spec_width |
binary double | size: 8 |
Requested spectral width of the AILS in each spectral band
unit: "1/cm"
|
|
31 | min_res_ails |
binary double | size: 8 |
Required minimum resolution of computed AILS
unit: "1/cm"
|
|
32 | min_res_opd |
binary uint16 | size: 2 |
Minimum resolution of sampling grid in OPD domain
unit: "cm"
|
|
33 | max_fft |
binary uint16 | size: 2 |
Maximum number of FFT samples to be used
|
|
34 | min_div_mir |
binary double | size: 8 |
Minimum divergence for which the modulation MIR is computed
unit: "degrees"
|
|
35 | spare_4 |
binary bytes | size: 8 |
Spare
|
hidden: true
|
36 | z_ir_misalign |
binary double | size: 8 |
Systematic IR misalignment along Z
unit: "rad"
|
|
37 | y_lin_shear |
binary double | size: 8 |
Retroreflector linear shear along Y vs. OPD
unit: "cm"
|
|
38 | y_interfer_div |
binary double | size: 8 |
Interferometer divergence along Y
unit: "rad"
|
|
39 | z_interfer_div |
binary double | size: 8 |
Interferometer divergence along Z
unit: "rad"
|
|
40 | laser_misalign_opd_y |
binary double | size: 8 |
Systematic OPD measuring laser misalignment along Y
unit: "rad"
|
|
41 | laser_misalign_opd_z |
binary double | size: 8 |
Systematic OPD measuring laser misalignment along Z
unit: "rad"
|
|
42 | lin_shear_var_y |
binary double | size: 8 |
Linear shear variation along Y
|
|
43 | lin_shear_z |
binary double | size: 8 |
Retroreflector linear shear along Z
|
|
44 | blur_ang_width_y |
binary double | size: 8 |
Blur angular width along Y
unit: "rad"
|
|
45 | blur_ang_width_z |
binary double | size: 8 |
Blur angular width along Z
unit: "rad"
|
|
46 | opt_speed_interfer |
binary double | size: 8 |
Optical speed of interferometer
unit: "cm/s"
|
|
47 | init_perturb |
binary double | size: 8 |
Initial perturbation on sampling of first sample
unit: "cm"
|
|
48 | time_const_init_perturb |
binary double | size: 8 |
Time constant of exponential attenuation of initial sampling perturbation
unit: "s"
|
|
49 | rel_speed_fluc |
binary double | size: 8 |
Initial relative speed fluctuation at the beginning of scan
|
|
50 | time_const_speed_fluc |
binary double | size: 8 |
Time constant of exponential attenuation of the initial speed fluctuation
unit: "s"
|
|
51 | gain_slope |
binary double | size: 8 |
Gain slope of electrical response of IR detector and preamplifier
|
|
52 | mismatch_delay |
binary double | size: 8 |
Mismatch delay between IR electronics response and ADC trigger
unit: "s"
|
|
53 | rel_drift_rate |
binary double | size: 8 |
Relative drift rate of laser wavenumber
unit: "1/cm"
|
|
54 | white_noise_bw |
binary double | size: 8 |
Bandwidth of laser white noise
unit: "Hz"
|
|
55 | laser_noise_bw |
binary double | size: 8 |
Bandwidth of laser 1/f noise
unit: "Hz"
|
|
56 | num_samples_y |
binary uint16 | size: 2 |
Number of discrete samples of integral approximation along Y
|
|
57 | num_samples_z |
binary uint16 | size: 2 |
Number of discrete samples of integral approximation along Z
|
|
58 | coeff_c |
binary double | size: 8 |
Coefficient C used for ILS/AILS interpolation
|
|
59 | coeff_b |
binary double | size: 8 |
Coefficient B used for ILS/AILS interpolation
unit: "cm"
|
|
60 | coeff_a |
binary double | size: 8 |
Coefficient A used for ILS/AILS interpolation
unit: "cm2"
|
|
61 | const_spec_corr |
binary double | size: 8 |
Constant spectral correction coefficient of AILS
unit: "1/cm"
|
|
62 | lin_spec_corr |
binary double | size: 8 |
Linear spectral correction coefficient of AILS
|
|
63 | quad_spec_corr |
binary double | size: 8 |
Quadratic spectral correction coefficient of AILS
unit: "cm"
|
|
64 | interp_flag |
binary uint16 | size: 2 |
Flag to control, if AILS interpolation coefficients shall be take from L1b(1) or PS2(0)
|
|
65 | spare_5 |
binary bytes | size: 2 |
Spare
|
hidden: true
|
66 | num_samples_apo |
binary uint16 | size: 2 |
Number of samples of apodisation vector in spectral domain
|
|
67 | num_element_apo |
binary uint16 | size: 2 |
Number of elements of apodisation vector in OPD domain
|
|
68 | spare_6 |
binary bytes | size: 10 |
Spare
|
hidden: true
|
69 | thresh_ils |
binary double | size: 8 |
Threshold for spectral grid error on which the ILS is computed
unit: "1/cm"
|
|
70 | lowest_apo |
binary double | size: 8 |
Lowest value of apodisation vector
|
|
71 | thresh_ratio |
binary double | size: 8 |
Threshold of ratio for which inverse squared apodisation function is computed
|
|
72 | spare_7 |
binary bytes | size: 2 |
Spare
|
hidden: true
|
73 | thresh_min_eigen |
binary double | size: 8 |
Threshold defining minimum value of eigenvalue
|
|
74 | max_spec_lines |
binary uint16 | size: 2 |
Maximum number of spectral lines per microwindow
|
|
75 | seq_vmr_ret |
ascii array[6] | size: 24 |
Sequence of processing of VMR retrievals
|
|
76 | switch_p_t_retrieval |
binary uint16 | size: 2 |
Switch for skipping p,T retrieval
|
|
77 | max_hitran_code |
binary uint16 | size: 2 |
Maximum HITRAN code to be considered
|
|
78 | max_preloop_iter |
binary uint16 | size: 2 |
Maximum number of p,T - 1st VMR preloop iterations
|
|
79 | spare_8 |
binary bytes | size: 6 |
Spare
|
hidden: true
|
80 | up_alt_thresh |
binary double | size: 8 |
Upper altitude threshold for use of spectral lines
unit: "km"
|
|
81 | low_alt_thresh |
binary double | size: 8 |
Lower altitude threshold for use of spectral lines
unit: "km"
|
|
82 | max_alt_step |
binary double | size: 8 |
Maximum altitude step for hydrostatic equilibrium
unit: "km"
|
|
83 | switch_ll_cont_def_corr |
binary uint16 | size: 2 |
Switch for activation of correction of lowest level for continuum derivatives: 0=deactivate correction; 1=activate correction
|
|
84 | ecmwf_ref_alt |
binary array[3] | size: 24 |
Vector containing three reference altitudes to be used for ECMWF based altitude correction
binary double | size: 8 |
unit: "km"
|
|
|
85 | thresh_ecmwf_ref_alt |
binary double | size: 8 |
Threshold to use lowest three altitudes for ECMWF based altitude correction
|
|
86 | spare_9 |
binary bytes | size: 6 |
Spare
|
hidden: true
|