id | field name | definition |
0 | Quality_Flag |
xml record |
id | field name | definition |
0 | Mie_Snr_Threshold |
ascii uint16 |
Threshold on the Mie SNR to consider the Mie signal as valid
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1 | Rayleigh_Snr_Threshold |
ascii uint16 |
Threshold on the Rayleigh SNR to consider the Rayleigh signal as valid
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2 | Mid_Mie_Snr_Threshold |
ascii uint16 |
Threshold on the Mie SNR defined on middle bins to consider the Mie signal as valid
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3 | Mid_Rayleigh_Snr_Threshold |
ascii uint16 |
Threshold on the Rayleigh SNR defined on middle bins to consider the Rayleigh signal as valid
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4 | Beta_Error_Bar_Threshold |
ascii uint16 |
Threshold on the relative error of backscatter retrieval (ratio of the variance of the backscatter coefficient to the backscatter coefficient)
unit: "%"
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5 | Alpha_Error_Bar_Threshold |
ascii uint16 |
Threshold on the relative error of extinction retrieval (ratio of the variance of the extinction coefficient to the extinction coefficient)
unit: "%"
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6 | Mid_Beta_Error_Bar_Threshold |
ascii uint16 |
Threshold on the relative error of backscatter retrieval on middle bins (ratio of the variance of the backscatter coefficient to the backscatter coefficient defined on middle bins)
unit: "%"
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7 | Mid_Alpha_Error_Bar_Threshold |
ascii uint16 |
Threshold on the relative error of extinction retrieval on middle bins (ratio of the variance of the extinction coefficient to the extinction coefficient defined on middle bins)
unit: "%"
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8 | Total_Optical_Depth_Threshold |
ascii uint16 |
Threshold above which we consider that the backscattered signal was totally attenuated by absorption.
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9 | BER_Max_Threshold |
ascii double |
Above this value, the BER retrieval is supposed to be invalid
unit: "sr^-1"
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10 | BER_Min_Threshold |
ascii double |
Below this value, the BER retrieval is supposed to be invalid
unit: "sr^-1"
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1 | Find_Matching_Bins |
xml record |
id | field name | definition |
0 | Altitude_Match_Threshold |
ascii uint16 |
Threshold lesser than which the gap between a Rayleigh bin border and a Mie bin border must be for them to match.
unit: "m"
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2 | Feature_Finder |
xml record |
id | field name | definition |
0 | Group_Energy_Threshold |
ascii double |
Parameter used to tune the minimum size of groups before they may be nibbled.
unit: "J"
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1 | Gaussian_Mask_Std5 |
ascii double |
Standard deviation of the smoothing Gaussian mask when it is 5-bin wide, i.e. when the minimum group length is 3.
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2 | Gaussian_Mask_Std3 |
ascii double |
Standard deviation of the smoothing Gaussian mask when it is 3-bin wide, i.e. when the minimum group length is 2.
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3 | Emptiness_Betap_Threshold |
ascii double |
Value below which it is considered that there is no significant amount of particles.
unit: "m^-1 sr^-1"
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4 | Negative_Betap_Threshold |
ascii double |
Negative value under which fluctuations are considered to be too high, leading to a rejection of the bin.
unit: "m^-1 sr^-1"
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5 | Nibbling_Threshold |
ascii double |
Threshold on the normalised variation of the standard deviation of the smoothed particulate backscatter when attempting to swap a bin between two neightbour groups.
unit: "m^-1 sr^-1"
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6 | Remove_Group_Relative_Error_Threshold |
ascii double |
Threshold on the unsmoothed particulate backscatter relative error, esti ated by the error propagation, above which products from a group will be considered untrustworthy and rejected.
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7 | List_of_Smoothed_Betap_Limits |
xml record |
id | field name | definition |
0 | Smoothed_Betap_Limit |
xml array[dim_0] |
dim_0: determined automatically from xml file
xml record |
id | field name | definition |
0 | BetapStd |
ascii double |
Smoothed particulate backscatter standard deviation.
unit: "m^-1 sr^-1"
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1 | BetapMean |
ascii double |
Corresponding smoothed particulate backscatter mean.
unit: "m^-1 sr^-1"
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8 | DSigma_Coefficient |
ascii double |
Coefficient to infer a limit to the smoothed particulate backscatter standard deviation variation when adding a bin to a group, making use of the Smoothed_Betap_Limits distribution above.
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3 | SCA |
xml record |
id | field name | definition |
0 | Clear_FMB_Beta_Threshold |
ascii double |
Particulate backscatter value below which the first matching bin will be considered empty of any particle, introducing thus no oscillating bias in the extinction retrieval.
unit: "m^-1 sr^-1"
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1 | Negative_Betap_Threshold |
ascii double |
Particulate backscatter value below which the coefficient and its derivatives will be considered invalid and set to -1. Slightly ngative values may be accepted to catch a glimps of the oscillations around zero.
unit: "m^-1 sr^-1"
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2 | Negative_SLOD_Threshold |
ascii double |
SLOD value below which the coefficient and its derivatives will be considered invalid and set to -1. Slightly ngative values may be accepted to catch a glimps of the oscillations around zero.
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3 | Negative_Betap_Threshold2 |
ascii double |
Particulate backscatter value below which thecoefficient and its derivatives will be considered invalid and set to - 1. Slightly ngative values may be accepted to catch a glimps of the oscillations around zero.
unit: "m^-1 sr^-1"
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4 | ICA |
xml record |
id | field name | definition |
0 | Emptiness_Betap_Threshold |
ascii double |
Particulate backscatter value below which it is considered that there is no significant amount of particles. Note that it may be the same as for the feature finder.
unit: "m^-1 sr^-1"
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1 | Negative_Betap_Threshold |
ascii double |
Negative value under which fluctuations are considered to be too high, leading to a rejection of the bin.
unit: "m^-1 sr^-1"
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2 | List_of_Filling_Cases |
xml record |
id | field name | definition |
0 | Filling_Case |
xml array[dim_0] |
dim_0: determined automatically from xml file
xml record |
id | field name | definition |
0 | F1 |
ascii double |
Factor of the constant member.
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1 | F2 |
ascii double |
Factor of the H function.
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2 | F3 |
ascii double |
Factor of the exponential function.
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3 | Credibility_Criterion |
ascii double |
Particulate backscatter value below which thecoefficient and its derivatives will be considered invalid and set to - 1. Slightly ngative values may be accepted to catch a glimps of the oscillations around zero.
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5 | Trans2LOD |
xml record |
id | field name | definition |
0 | Iteration_Max |
ascii uint16 |
Maximum number of iterations in the iterative estimation of the SLOD.
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1 | Inversion_Tolerance |
ascii double |
Maximum gap between the ratio of the normalized two way transmission and the squared transmission from the satellite to the bin and the value resulting of the SLOD estimation.
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2 | Asymptotic_Expansion_Limit_Coefficient |
ascii double |
Coefficient involved in the determination of the asymptotic expansion to be used in the inversion to get the SLOD. It's value is set to 0.4 and may be static.
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6 | MCA |
xml record |
id | field name | definition |
0 | Low_SR_Fine_Threshold |
ascii double |
Value below which the SR_fine frim L1B data is considered not vali. Note that the default value of 0.75 will obviously lead to quantitatively wrong results, but the shape of the variations may be ept in the calculation thus enabling some interpretation.
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7 | Scene_Classification |
xml record |
id | field name | definition |
0 | Scattering_Ratio_Cloud_Threshold |
ascii double |
Value of the SR above which the presence of a cloud is strongly assumed.
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1 | BER_Cloud_Threshold |
ascii double |
Value of the BER below which the presence of a cloud is strongly assumed.
unit: "m^-1 sr^-1"
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2 | Water_Melting_Temperature |
ascii double |
Set to 273.15 K for 1 bar pressure.
unit: "K"
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3 | Surfusion_Threshold_Temperature |
ascii double |
Temperature down to which supercooled water may be seen in the atmosphere. Set to 233.15 K.
unit: "K"
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4 | Relative_Humidity_Cloud_Threshold |
ascii double |
RH value above which the presence of a cloud is strongly assumed. Taking the incertitude of the model, it is set to 0.94.
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