File name: Pandora252s1_BoulderCO-NCAR_20250318_L2Fit_fout2c1d20230118p1-8.txt
File generation date: 20250730T150241.7Z
Data description: Level 2 spectral fitting results file
Data file version: fout2c1p1-8
Local principal investigator: Tom Hanisco
Network principal investigator: Alexander Cede
Instrument type: Pandora
Instrument number: 252
Spectrometer number: 1
Processing software version used: BlickP v1.8.75
Instrument operation file used: Pandora252_OF_v2d20221123.txt
Instrument calibration file used: Pandora252s1_CF_v1d20230118.txt
Level 1 file used: Pandora252s1_BoulderCO-NCAR_20250318_L1_smca1c1d20230118p1-8.txt
Full location name: National Center for Atmospheric Research
Short location name: BoulderCO-NCAR
Country of location: United States
Location latitude [deg]: 40.0375
Location longitude [deg]: -105.2420
Location altitude [m]: 1616
Local noon date: 20250318
Notes on s-number (L1 configuration): Corrections NOT applied although requested by the s-number are latency correction, matrix method stray light correction (replaced by simple method)
Data caveats: Full initial 1.8 calibration analysis + OoB session, absolute calibration done with an uncalibrated lamp, certificate of FEL1441 (GSFC) used
First and last pixel inside fitting window: 192 334
Nominal wavelengths inside fitting window [nm]: 305.0642 305.2052 305.3462 305.4871 305.6280 305.7690 305.9099 306.0508 306.1917 306.3325 306.4734 306.6143 306.7551 306.8959 307.0368 307.1776 307.3184 307.4592 307.5999 307.7407 307.8815 308.0222 308.1630 308.3037 308.4444 308.5851 308.7258 308.8665 309.0071 309.1478 309.2885 309.4291 309.5697 309.7103 309.8509 309.9915 310.1321 310.2727 310.4132 310.5538 310.6943 310.8349 310.9754 311.1159 311.2564 311.3968 311.5373 311.6778 311.8182 311.9587 312.0991 312.2395 312.3799 312.5203 312.6607 312.8011 312.9414 313.0818 313.2221 313.3624 313.5027 313.6431 313.7833 313.9236 314.0639 314.2042 314.3444 314.4846 314.6249 314.7651 314.9053 315.0455 315.1857 315.3258 315.4660 315.6061 315.7463 315.8864 316.0265 316.1666 316.3067 316.4468 316.5869 316.7269 316.8670 317.0070 317.1470 317.2870 317.4270 317.5670 317.7070 317.8470 317.9869 318.1269 318.2668 318.4067 318.5466 318.6865 318.8264 318.9663 319.1062 319.2460 319.3859 319.5257 319.6655 319.8053 319.9451 320.0849 320.2247 320.3645 320.5042 320.6439 320.7837 320.9234 321.0631 321.2028 321.3425 321.4822 321.6218 321.7615 321.9011 322.0407 322.1803 322.3199 322.4595 322.5991 322.7387 322.8782 323.0178 323.1573 323.2969 323.4364 323.5759 323.7154 323.8548 323.9943 324.1338 324.2732 324.4126 324.5521 324.6915 324.8309 324.9702
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Column 1: Two letter code of measurement routine
Column 2: UT date and time for center-time of measurement, yyyymmddThhmmssZ (ISO 8601)
Column 3: Fractional days since 1-Jan-2000 midnight for center-time of measurement
Column 4: Routine count (1 for the first routine of the day, 2 for the second, etc.)
Column 5: Repetition count (1 for the first set in the routine, 2 for the second, etc.)
Column 6: Total duration of measurement set in seconds
Column 7: Data processing type index
Column 8: Solar zenith angle for center-time of measurement in degree
Column 9: Solar azimuth for center-time of measurement in degree, 0=north, increases clockwise
Column 10: Lunar zenith angle for center-time of measurement in degree
Column 11: Lunar azimuth for center-time of measurement in degree, 0=north, increases clockwise
Column 12: Pointing zenith angle in degree, absolute or relative (see next column), 999=tracker not used
Column 13: Zenith pointing mode: zenith angle is... 0=absolute, 1=relative to sun, 2=relative to moon
Column 14: Pointing azimuth in degree, increases clockwise, absolute (0=north) or relative (see next column), 999=tracker not used
Column 15: Azimuth pointing mode: like zenith angle mode but also fixed scattering angles relative to sun (3) or moon (4)
Column 16: Fitting result index: 0=no error or warning, 1, 2=warning, >2=error
Column 17: Number of function evaluations used, 0=linear fitting or fitting not successful or no fitting done
Column 18: rms of unweighted fitting residuals, -9=fitting not successful
Column 19: Normalized rms of fitting residuals weighted with independent uncertainty, -9=fitting not successful or no uncertainty used
Column 20: Expected rms based on independent uncertainty, -9=fitting not successful or no uncertainty given
Column 21: Expected normalized weighted rms based on independent uncertainty, -9=fitting not successful or no uncertainty given
Column 22: Ozone slant column amount [moles per square meter], -9e99=fitting not successful
Column 23: Independent uncertainty of ozone slant column amount [moles per square meter], -1=cross section is zero in this wavelength range, -3=spectral fitting was done, but no independent uncertainty could be retrieved, -5=no independent uncertainty input was given, -9=spectral fitting not successful
Column 24: Structured uncertainty of ozone slant column amount [moles per square meter], -7=not given since method "MEAS" was chosen, -9=spectral fitting not successful
Column 25: Common uncertainty of ozone slant column amount [moles per square meter], -1=cross section is zero in this wavelength range, -6=no common uncertainty input was given, -7=not given since method "MEAS" was chosen, -9=spectral fitting not successful
Column 26: rms-based uncertainty of ozone slant column amount [moles per square meter], -1=cross section is zero in this wavelength range, -3=spectral fitting was done, but no rms-based uncertainty could be retrieved, -9=spectral fitting not successful
Column 27: Ozone effective temperature [K]
Column 28: Independent uncertainty of ozone effective temperature [K], -1=temperature fitting was requested, but cross section is zero in this wavelength range, -2=no temperature fitting was requested and output for effective temperature and structured uncertainty of it is based on f-code, -3=spectral fitting was done, but no independent uncertainty could be retrieved, -4=temperature fitting was requested, but differential optical depth is too small to retrieve the temperature, -5=no independent uncertainty input was given, -9=spectral fitting not successful
Column 29: Structured uncertainty of ozone effective temperature [K], -1=temperature fitting was requested, but cross section is zero in this wavelength range, -4=temperature fitting was requested, but differential optical depth is too small to retrieve the temperature, -9=spectral fitting not successful
Column 30: Common uncertainty of ozone effective temperature [K], -1=temperature fitting was requested, but cross section is zero in this wavelength range, -2=no temperature fitting was requested and output for effective temperature and structured uncertainty of it is based on f-code, -3=spectral fitting was done, but no common uncertainty could be retrieved, -4=temperature fitting was requested, but differential optical depth is too small to retrieve the temperature, -6=no common uncertainty input was given, -9=spectral fitting not successful
Column 31: Effective ozone fitting wavelength [nm], -9=fitting not successful
Column 32: Diffuse correction applied before fitting at effective fitting wavelength for ozone [%], 0=no diffuse correction applied or fitting not requested, >0=measured diffuse correction, <0=(negative value of) calculated diffuse correction
Column 33: Sulfur dioxide slant column amount [moles per square meter], -9e99=fitting not successful
Column 34: Independent uncertainty of sulfur dioxide slant column amount [moles per square meter], -1=cross section is zero in this wavelength range, -3=spectral fitting was done, but no independent uncertainty could be retrieved, -5=no independent uncertainty input was given, -9=spectral fitting not successful
Column 35: Structured uncertainty of sulfur dioxide slant column amount [moles per square meter], -7=not given since method "MEAS" was chosen, -9=spectral fitting not successful
Column 36: Common uncertainty of sulfur dioxide slant column amount [moles per square meter], -1=cross section is zero in this wavelength range, -6=no common uncertainty input was given, -7=not given since method "MEAS" was chosen, -9=spectral fitting not successful
Column 37: rms-based uncertainty of sulfur dioxide slant column amount [moles per square meter], -1=cross section is zero in this wavelength range, -3=spectral fitting was done, but no rms-based uncertainty could be retrieved, -9=spectral fitting not successful
Column 38: Sulfur dioxide effective temperature [K]
Column 39: Independent uncertainty of sulfur dioxide effective temperature [K], -1=temperature fitting was requested, but cross section is zero in this wavelength range, -2=no temperature fitting was requested and output for effective temperature and structured uncertainty of it is based on f-code, -3=spectral fitting was done, but no independent uncertainty could be retrieved, -4=temperature fitting was requested, but differential optical depth is too small to retrieve the temperature, -5=no independent uncertainty input was given, -9=spectral fitting not successful
Column 40: Structured uncertainty of sulfur dioxide effective temperature [K], -1=temperature fitting was requested, but cross section is zero in this wavelength range, -4=temperature fitting was requested, but differential optical depth is too small to retrieve the temperature, -9=spectral fitting not successful
Column 41: Common uncertainty of sulfur dioxide effective temperature [K], -1=temperature fitting was requested, but cross section is zero in this wavelength range, -2=no temperature fitting was requested and output for effective temperature and structured uncertainty of it is based on f-code, -3=spectral fitting was done, but no common uncertainty could be retrieved, -4=temperature fitting was requested, but differential optical depth is too small to retrieve the temperature, -6=no common uncertainty input was given, -9=spectral fitting not successful
Column 42: Effective sulfur dioxide fitting wavelength [nm], -9=fitting not successful
Column 43: Diffuse correction applied before fitting at effective fitting wavelength for sulfur dioxide [%], 0=no diffuse correction applied or fitting not requested, >0=measured diffuse correction, <0=(negative value of) calculated diffuse correction
Column 44: Molecular scattering air mass factor used for molecular scattering subtraction before the fitting
Column 45: Estimated uncertainty of molecular scattering air mass factor, -9=molecular scattering was not subtracted before the fitting
Column 46: Lower limit used for wavelength scaling [nm]
Column 47: Upper limit used for wavelength scaling [nm]
Column 48: Order of smoothing polynomial
Column 49: Smoothing polynomial coefficient, order 0
Column 50: Independent uncertainty of smoothing polynomial coefficient, order 0, -9=fitting not successful
Column 51: Structured uncertainty of smoothing polynomial coefficient, order 0, -9=fitting not successful
Column 52: Common uncertainty of smoothing polynomial coefficient, order 0, -9=fitting not successful
Column 53: rms-based uncertainty of smoothing polynomial coefficient, order 0, -9=fitting not successful
Column 54: Smoothing polynomial coefficient, order 1
Column 55: Independent uncertainty of smoothing polynomial coefficient, order 1, -9=fitting not successful
Column 56: Structured uncertainty of smoothing polynomial coefficient, order 1, -9=fitting not successful
Column 57: Common uncertainty of smoothing polynomial coefficient, order 1, -9=fitting not successful
Column 58: rms-based uncertainty of smoothing polynomial coefficient, order 1, -9=fitting not successful
Column 59: Smoothing polynomial coefficient, order 2
Column 60: Independent uncertainty of smoothing polynomial coefficient, order 2, -9=fitting not successful
Column 61: Structured uncertainty of smoothing polynomial coefficient, order 2, -9=fitting not successful
Column 62: Common uncertainty of smoothing polynomial coefficient, order 2, -9=fitting not successful
Column 63: rms-based uncertainty of smoothing polynomial coefficient, order 2, -9=fitting not successful
Column 64: Smoothing polynomial coefficient, order 3
Column 65: Independent uncertainty of smoothing polynomial coefficient, order 3, -9=fitting not successful
Column 66: Structured uncertainty of smoothing polynomial coefficient, order 3, -9=fitting not successful
Column 67: Common uncertainty of smoothing polynomial coefficient, order 3, -9=fitting not successful
Column 68: rms-based uncertainty of smoothing polynomial coefficient, order 3, -9=fitting not successful
Column 69: Mean value of measured data inside fitting window [same units as measurements]
Column 70: Wavelength change polynomial coefficient, order 0
Column 71: Independent uncertainty of wavelength change polynomial coefficient, order 0, -9=fitting not successful
Column 72: Structured uncertainty of wavelength change polynomial coefficient, order 0, -9=fitting not successful
Column 73: Common uncertainty of wavelength change polynomial coefficient, order 0, -9=fitting not successful
Column 74: rms-based uncertainty of wavelength change polynomial coefficient, order 0, -9=fitting not successful
Column 75: L2Fit data quality flag: 0=assured high quality, 1=assured medium quality, 2=assured low quality, 10=not-assured high quality, 11=not-assured medium quality, 12=not-assured low quality
Column 76: Sum over 2^i using those i, for which the corresponding L2Fit data quality parameter exceeds the DQ1 limit, 0=L1 data quality above 0, 1=Spectral fitting was not successful, 2=Wavelength shift too large, 3=Normalized rms of fitting residuals weighted with independent uncertainty too large
Column 77: Sum over 2^i using those i, for which the corresponding L2Fit data quality parameter exceeds the DQ2 limit (same parameters as for DQ1)
Column 78: L1 data quality flag: 0=assured high quality, 1=assured medium quality, 2=assured low quality, 10=not-assured high quality, 11=not-assured medium quality, 12=not-assured low quality
Column 79: Sum over 2^i using those i, for which the corresponding L1 data quality parameter exceeds the DQ1 limit, 0=Saturated data, 1=Too few dark counts measurements, 2=No temperature given or effective temperature too different from the reference temperature, 3=Dark count too high, 4=Unsuccessful dark background fitting, 5=The dark count differs significantly from the dark map for too many pixels, 6=Absolute value of estimated average residual stray light level too high, 7=Although attempted, no wavelength change could be retrieved, 8=Absolute value of retrieved wavelength shift too large, 9=Retrieved wavelength shift differs too much from the shift predicted by the effective temperature
Column 80: Sum over 2^i using those i, for which the corresponding L1 data quality parameter exceeds the DQ2 limit (same parameters as for DQ1)
Column 81: Atmospheric variability [%], 999=no atmospheric variability was determined
Column 82: Wavelength effective temperature [°C], 999=no effective temperature given
Column 83: Estimated average residual stray light level [%] (only valid for stray light correction methods 2 and higher)
Column 84: Retrieved wavelength shift from L1 data [nm], -9=no wavelength change determination
Column 85: Retrieved total wavelength shift [nm], -9=no wavelength change fitting
Column 86: Number of bright count cycles
Column 87: Number of dark count cycles
Column 88: Effective position of filterwheel #1, 0=filterwheel not used, 1-9 are valid positions
Column 89: Effective position of filterwheel #2, 0=filterwheel not used, 1-9 are valid positions
Column 90: Sum over 2^i, 0=spectra were interpolated in time, 1=spectra are corrected for off-target signal
Column 91: Integration time [ms]
Column 92: Temperature at electronics board [°C], 999=no temperature signal
Column 93: Spectrometer control temperature [°C], 999=no temperature signal
Column 94: Auxiliary spectrometer temperature [°C], 999=no temperature signal
Column 95: Temperature in head sensor [°C], 999=no temperature signal
Column 96: Humidity in head sensor [%], -9=no humidity signal
Column 97: Pressure in head sensor [hPa], -9=no pressure signal
Columns 98-240: Unweighted slant column residuals for each pixel inside the fitting window multiplied by 1e5, 9e5=pixel was not used for fitting
Columns 241-383: Normalized slant column residuals weighted with independent instrumental uncertainty for each pixel inside the fitting window multiplied by 1e5, 9e5=pixel was not used for fitting, 0=no independent instrumental uncertainty was given
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