MIP_PS2_AX_GADS_vmr_v4

binary record ""

field name

definition

dsr_time

binary time

size: 12

Time of creation

unit: "s since 2000-01-01"

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"

dsr_length

binary uint32	size: 4
Length of this DSR in bytes unit: "bytes"

min_val_non_sing

binary double	size: 8
Minimum value used to check non-singularity of matrix

usage_matrix_s_p_t_error

binary uint16	size: 2
Switch for usage of matrix S in p,T error propagation

lin_fov_conv_switch

binary uint16	size: 2
Switch to enable linear FOV convolution

num_esd_ig2_temp

binary uint16	size: 2
Number of elements of the estimated standard deviation (ESD) vector for IG2 temperature profiles

num_esd_merged_temp

binary uint16	size: 2
Number of elements of the estimated standard deviation (ESD) vector for "ECMF merged with IG2" temperature profiles

spare_1

binary bytes	size: 6
Spare

hidden: true

max_elements

binary uint16	size: 2
Maximum number of elements in profiles

num_unsuccess

binary uint16	size: 2
Number of allowed unsuccessful previous retrievals

enh_spec_range

binary double	size: 8
Enhanced spectral range of microwindows used to decide whether a line inside the microwindow shall be considered as line or as nearby continuum unit: "1/cm"

max_samples_fine

binary uint16	size: 2
Maximum number of spectral samples on fine grid

chi2_thresh

binary double	size: 8
Threshold to check convergence of Chi^2

thresh_fitted_vmr

binary double	size: 8
Threshold to check convergence of fitted VMR

vcm_akm_switch

binary uint16	size: 2
Switch for choosing between different ways to calculate VCM and AKM

max_macro_iter_gauss

binary uint16	size: 2
Maximum number of Gauss-Newton macro-iterations

cont_fit_switch

binary uint16	size: 2
Switch for handling the fitting of the continuum profile

max_num_marq

binary uint16	size: 2
Maximum number of Marquardt micro-iterations

low_thresh_vmr

binary double	size: 8
Lower threshold of estimated VMR unit: "ppmv"

up_thresh_vmr

binary double	size: 8
Upper threshold of estimated VMR unit: "ppmv"

low_thresh_cont

binary double	size: 8
Lower threshold of estimated continuum parameter unit: "cm2"

up_thresh_cont

binary double	size: 8
Upper threshold of estimated continuum parameter unit: "cm2"

num_modes

binary uint16	size: 2
Number of modes for thresholds

num_sweeps

binary array[dim_0]

dim_0: int(../num_modes)

binary uint16 size: 2

Number of sweeps characterizing each mode

chi2_size_thresh

binary array[dim_0]

dim_0: int(../num_modes)

binary double size: 8

Vector of thresholds to check the size of chi-square

marq_thresh

binary array[dim_0]

dim_0: int(../num_modes)

binary double size: 8

Vector of thresholds to check Marquardt parameter

chi2_var_thresh

binary double	size: 8
Threshold to check the chi-squared variation between previous and current iteration

l2_var_thresh

binary double	size: 8
Threshold to check the variation of weighted L2-norm of parameters

diff_spec_res

binary double	size: 8
Difference between spectral resolution of general fine wavenumber grid and spectral grid of cross section look-up tables unit: "1/cm"

cont_param

binary uint16	size: 2
Control parameter for fitting of continuum and instrumental offset. 0 = exclude continuum and offset; 1 = include continuum, exclude offset; 2 = include continuum and offset.

up_alt_cont

binary double	size: 8
Upper altitude limit where continuum shall be fitted unit: "km"

spare_5

binary bytes	size: 8
Spare

hidden: true

max_fitted

binary uint16	size: 2
Maximum number of fitted parameters

spec_overlap

binary double	size: 8
Overlap of spectral range between two adjacent microwindows unit: "%"

zero_alt_cont

binary double	size: 8
Altitude above which the continuum shall be set to zero unit: "km"

cent_wvn

binary double	size: 8
Central wavenumber of the line used as reference unit: "1/cm"

temp_coef_lorentz

binary double	size: 8
Coefficient of temperature dependence of Lorentz half-width of the line used as reference

guess_alt

binary double	size: 8
Guess of altitude increment above highest level unit: "km"

red_fact

binary double	size: 8
Reduction factor applied to guess of altitude increment

up_lim_atm

binary double	size: 8
Upper limit of atmosphere unit: "km"

half_width_ref

binary double	size: 8
Half-width of the line used as reference unit: "1/cm"

max_temp_var_low

binary double	size: 8
Maximum allowed temperature variation between atmospheric levels for lower altitudes unit: "K"

max_temp_var_high

binary double	size: 8
Maximum allowed temperature variation between atmospheric levels for higher altitudes unit: "K"

alt_thresh_change

binary double	size: 8
Altitude threshold where temperature thresholds are changed unit: "km"

max_var_half_width

binary double	size: 8
Maximum allowed variation of half-width of the line between adjacent atmospheric levels unit: "1/cm"

num_max_atm

binary uint16	size: 2
Number of maximum levels for modeling of the atmosphere

max_diff_gas

binary uint16	size: 2
Maximum number of different gases

max_geom

binary uint16	size: 2
Maximum number of simulated geometries

max_param_vmr

binary uint16	size: 2
Maximum number of parameters to be retrieved for VMR and continuum

coef_corr_grav

binary array[2]

size: 16

Coefficients for latitude dependent correction of gravity acceleration

binary double size: 8

approx_err_int

binary double	size: 8
Approximation error of integrals (Curtis-Godson)

init_temp_pert

binary double	size: 8
Initial temperature of perturbed equivalent temperature unit: "K"

max_layers

binary uint16	size: 2
Maximum number of layers

max_samp_integrand

binary uint16	size: 2
Minimum number of samples at which the integrand of each integral shall be computed

max_base_profile_elems

binary uint16	size: 2
Maximum number of elements in base profiles

min_integrate_var

binary double	size: 8
Minimum value of integration variable

num_add_iapt_num

binary uint16	size: 2
Number of additional IAPT numbers for each geometry above the lowest geometry

eq_ref_press

binary double	size: 8
Reference equivalent pressure at equivalent reference temperature used for line computation unit: "hPa"

eq_ref_temp

binary double	size: 8
Equivalent reference temperature unit: "K"

half_width_mult_lorentz

binary double	size: 8
Multiplier for Lorentz and Doppler half width used for Lorentz lineshape computations on the local coarse wavenumber grid

half_width_mult_voigt

binary double	size: 8
Multiplier for Doppler half width used for Voigt lineshape computations on the local fine wavenumber grid

interp_switch

binary int16	size: 2
Switch for interpolation of absorption cross sections for geometries above the lowest geometry

cross_switch

binary uint16	size: 2
Switch for usage of cross section lookup tables

spare_6

binary bytes	size: 6
Spare

hidden: true

hitran_code

binary uint16	size: 2
HITRAN code of the lineshape to be pre-computed

isotope_num_lineshape

binary uint16	size: 2
Isotope number of lineshape to be pre-computed

co2_chi_switch

binary uint16	size: 2
Switch for computation of CO2 Chi factor. 0 = no factor; 1 = N2O2 broadening; 2 = N2 broadening only.

ref_half_width_exp

binary double	size: 8
Reference half width exponent of lineshape to be computed

ref_half_width

binary double	size: 8
Reference half-width of lineshape to be computed unit: "1/cm"

mult_fact_voigt

binary double	size: 8
Multiplication factor applied to approximate Voigt half width to determine the local fine grid

mult_fact_coarse

binary uint16	size: 2
Multiplier for definition of local coarse wavenumber grid

spare_7

binary bytes	size: 8
Spare

hidden: true

num_samp_x

binary uint16	size: 2
Number of samples along x coordinate

num_samp_y

binary uint16	size: 2
Number of samples along y coordinate

great_base

binary double	size: 8
Greater base of trapezium defining the vertical FOV unit: "km"

small_base

binary double	size: 8
Smaller base of trapezium defining the vertical FOV unit: "km"

spare_8

binary bytes	size: 16
Spare

hidden: true

scale_fact_vmr_base

binary double	size: 8
Scaling factor used to scale base VMR profile

thresh_temp_diff

binary double	size: 8
Threshold of temperature difference between two model layers unit: "K"

lambda_damp_fact

binary double	size: 8
Lambda damping factor

scale_lambda_damp_fact

binary double	size: 8
Scaling of lambda damping factor related to continuum parameters

scale_dec_lambda

binary double	size: 8
Scaling factor used to decrease lambda at each macro iteration

scale_inc_lambda

binary double	size: 8
Scaling factor used to increase lambda at each micro iteration

prev_prof_switch

binary uint16	size: 2
Switch for usage of previous retrieved profiles

spare_9

binary bytes	size: 2
Spare

hidden: true

vcm_thresh

binary double	size: 8
VCM threshold used to check the maximum error of retrieved VMR unit: "ppmv"

half_width_const

binary array[3]

size: 24

Constants for computation of half-width

binary double size: 8

chi2_prod_switch

binary uint16	size: 2
Switch for multiplication of VCM of retrieved profile with factor chi^2 for optimum estimate

spare_10

binary bytes	size: 6
Spare

hidden: true

samp_inter_x_voigt

binary double	size: 8
Sampling interval of x coordinate of Voigt LUT

samp_inter_y_voigt

binary double	size: 8
Sampling interval of y coordinate of Voigt LUT

esd_ig2_profile

binary array[dim_0]

Relative estimated standard deviation (ESD) for IG2 temperature profiles

dim_0: int(../num_esd_ig2_temp)

binary double size: 8

unit: "%"

altitude_esd_ig2_profile

binary array[dim_0]

Altitudes for ESD of IG2 temperature profiles

dim_0: int(../num_esd_ig2_temp)

binary double size: 8

unit: "km"

corr_length_ig2_vcm

binary double	size: 8
Correlation length of estimated IG2 VCM unit: "km"

esd_merged_profile

binary array[dim_0]

Relative estimated standard deviation (ESD) for IG2 merged with ECMWF temperature profiles

dim_0: int(../num_esd_merged_temp)

binary double size: 8

unit: "%"

altitude_esd_merged_profile

binary array[dim_0]

Altitudes for ESD of IG2 merged with ECMWF temperature profiles

dim_0: int(../num_esd_merged_temp)

binary double size: 8

unit: "km"

corr_length_merged_vcm

binary double	size: 8
Correlation length of estimated IG2+ECMWF VCM unit: "km"

time_const_aging_vcm

binary double	size: 8
Time constant for aging VCM of retrieved profiles unit: "s"

trop_alt_coeff_a

binary double	size: 8
Coefficient A for Tropopause Altitude Correction unit: "km"

trop_alt_coeff_b

binary double	size: 8
Coefficient B for Tropopause Altitude Correction unit: "km"

100

trop_alt_coeff_c

binary double	size: 8
Coefficient C for Tropopause Altitude Correction unit: "km"

101

sim_geom_below_trop

binary double	size: 8
Maximum distance of simulated geometries below tropopause unit: "km"

102

sim_distance_above_trop

binary double	size: 8
Maximum distance of simulated geometries above tropopause unit: "km"

103

enabling_profile_reg

binary uint16	size: 2
Switch for enabling profile regularisation

104

param_tuning_profile_reg

binary double	size: 8
Parameter for tuning profile regularisation

105

diag_reg_matrix_temp

binary array[2]

size: 16

Diagonal and first off-diagonal element of regularisation matrix referring to VMR

binary double size: 8

106

diag_reg_matrix_cont

binary array[2]

size: 16

Diagonal and first off-diagonal element of regularisation matrix referring to continuum

binary double size: 8

107

diag_reg_matrix_offset

binary array[2]

size: 16

Diagonal and first off-diagonal element of regularisation matrix referring to offset

binary double size: 8

108

switch_fov_tab_func

binary uint16	size: 2
Switch for usage of FOV tabulated function

109

max_sim_geom_fov

binary uint16	size: 2
Maximum number of simulated geometries for FOV

110

band_fov_tab

binary array[5]

FOV tabulation for bands A, AB, B, C, D

binary record

id field name definition

0 num_points_fov_tab_band

binary uint16 size: 2

Number of points for FOV tabulation for spectral band

1 heights_fov_func_band

binary array[dim_0]

Heights of FOV function for spectral band

dim_0: int(../num_points_fov_tab_band)

binary double size: 8

2 grid_fov_func_band

binary array[dim_0]

Grid for FOV function for spectral band

dim_0: int(../num_points_fov_tab_band)

binary double size: 8