File name: Pandora104s1_Downsview_20240107_L2Fit_fout2c23d20230421p1-8.txt File generation date: 20241127T203556.9Z Data description: Level 2 spectral fitting results file Data file version: fout2c23p1-8 Local principal investigator: Vitali Fioletov Network principal investigator: Alexander Cede Instrument type: Pandora Instrument number: 104 Spectrometer number: 1 Processing software version used: BlickP v1.8.60 Instrument operation file used: Pandora104_OF_v10d20171009.txt Instrument calibration file used: Pandora104s1_CF_v23d20230421.txt Level 1 file used: Pandora104s1_Downsview_20240107_L1_smca1c23d20230421p1-8.txt Full location name: Environment Canada HQ - Downsview Short location name: Downsview Country of location: Canada Location latitude [deg]: 43.7810 Location longitude [deg]: -79.4680 Location altitude [m]: 187 Local noon date: 20240107 Notes on s-number (L1 configuration): Corrections NOT applied although requested by the s-number are dark map for dark correction (replaced by immediate dark method), latency correction, matrix method stray light correction (replaced by simple method) Data caveats: Modification of session 18 for SO2 "based on session 14 for VP 20230421" First and last pixel inside fitting window: 206 348 Nominal wavelengths inside fitting window [nm]: 305.0496 305.1902 305.3308 305.4713 305.6119 305.7524 305.8929 306.0334 306.1739 306.3144 306.4549 306.5954 306.7358 306.8763 307.0167 307.1571 307.2976 307.4380 307.5784 307.7187 307.8591 307.9995 308.1398 308.2801 308.4205 308.5608 308.7011 308.8414 308.9817 309.1219 309.2622 309.4024 309.5427 309.6829 309.8231 309.9633 310.1035 310.2437 310.3838 310.5240 310.6641 310.8043 310.9444 311.0845 311.2246 311.3647 311.5048 311.6448 311.7849 311.9249 312.0650 312.2050 312.3450 312.4850 312.6250 312.7650 312.9049 313.0449 313.1848 313.3248 313.4647 313.6046 313.7445 313.8844 314.0243 314.1641 314.3040 314.4438 314.5836 314.7235 314.8633 315.0031 315.1428 315.2826 315.4224 315.5621 315.7019 315.8416 315.9813 316.1210 316.2607 316.4004 316.5401 316.6797 316.8194 316.9590 317.0986 317.2382 317.3778 317.5174 317.6570 317.7966 317.9361 318.0757 318.2152 318.3547 318.4943 318.6338 318.7732 318.9127 319.0522 319.1916 319.3311 319.4705 319.6099 319.7493 319.8887 320.0281 320.1675 320.3068 320.4462 320.5855 320.7249 320.8642 321.0035 321.1428 321.2820 321.4213 321.5606 321.6998 321.8391 321.9783 322.1175 322.2567 322.3959 322.5351 322.6742 322.8134 322.9525 323.0916 323.2308 323.3699 323.5090 323.6480 323.7871 323.9262 324.0652 324.2043 324.3433 324.4823 324.6213 324.7603 324.8993 --------------------------------------------------------------------------------------- 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: L1 based wavelength change coefficient, order 0, -9=no L1 wavelength change determination Column 76: L1 based wavelength change coefficient, order 1, -9=no L1 wavelength change determination Column 77: 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 78: 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 79: 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 80: 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 81: 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 82: 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 83: Atmospheric variability [%], 999=no atmospheric variability was determined Column 84: Wavelength effective temperature [°C], 999=no effective temperature given Column 85: Estimated average residual stray light level [%] (only valid for stray light correction methods 2 and higher) Column 86: Retrieved wavelength shift from L1 data [nm], -9=no wavelength change determination Column 87: Retrieved total wavelength shift [nm], -9=no wavelength change fitting Column 88: Number of bright count cycles Column 89: Number of dark count cycles Column 90: Effective position of filterwheel #1, 0=filterwheel not used, 1-9 are valid positions Column 91: Effective position of filterwheel #2, 0=filterwheel not used, 1-9 are valid positions Column 92: Sum over 2^i, 0=spectra were interpolated in time, 1=spectra are corrected for off-target signal Column 93: Integration time [ms] Column 94: Temperature at electronics board [°C], 999=no temperature signal Column 95: Spectrometer control temperature [°C], 999=no temperature signal Column 96: Auxiliary spectrometer temperature [°C], 999=no temperature signal Columns 97-239: Unweighted slant column residuals for each pixel inside the fitting window multiplied by 1e5, 9e5=pixel was not used for fitting Columns 240-382: 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 --------------------------------------------------------------------------------------- SS 20240107T183807.5Z 8772.776476 333 1 49.89 2 68.29 198.43 94.10 240.91 0.00 1 0.00 1 0 17 4.618e-02 5.607e-03 1.109e-02 6.319e-04 4.605289e-01 3.279390e-04 5.482591e-03 -6.000000e+00 2.665873e-02 223.09 -2.00 3.57 -2.00 319.82 0.00e+00 3.194883e-03 9.826644e-05 6.442527e-04 -6.000000e+00 1.148868e-03 272.28 -2.00 20.00 -2.00 319.32 0.00e+00 2.680 0.000 302.00 328.00 3 1.5455e+00 9.2619e-04 3.5346e-02 -6.0000e+00 6.5778e-02 3.1019e-02 1.1038e-03 2.3838e-02 -6.0000e+00 7.1611e-02 -4.3790e-03 9.5852e-04 1.3139e-02 -6.0000e+00 4.2553e-02 -1.0644e-02 5.0212e-04 5.4528e-03 -6.0000e+00 1.8066e-02 4.5104e-03 -8.4186e-05 1.8524e-05 5.5407e-05 -6.0000e+00 1.2658e-03 7.1995e-03 0.0000e+00 10 0 0 10 0 0 99.98 22.19 0.23 0.00720 0.00657 960 197 1 5 0 51.850 22.19 14.99 17.88 -9342 -10396 -10871 -15504 -20906 -16990 -14011 -16598 -10958 -17674 -13111 -14383 -7395 -7220 -409 -2037 792 1120 2098 976 1820 -474 -900 13 -1580 -4181 -4441 -5169 -3249 -3818 -854 189 -996 -166 -4456 -2802 -2958 -1198 -1807 -1393 -2406 -2114 -1253 -431 -201 624 348 610 741 934 1740 1590 1536 1580 880 465 573 -533 -509 394 1141 2024 2160 2178 1053 131 428 750 1272 1714 134 267 -488 -61 -380 -850 -984 -1243 -1094 -880 -1589 -1538 -1783 -1805 -785 -467 234 293 669 716 540 640 58 57 651 232 116 349 287 -618 -415 -601 -344 445 -332 -1292 -1144 -297 -11 830 415 589 -105 323 -48 698 742 634 -112 165 -495 -4 -9 410 -121 328 -472 337 511 -273 -366 -730 -561 48 -132 159 -249 455 165 128 -72 96 -165 -135 -172 -193 -281 -364 -275 -232 -321 -225 -415 -301 -361 -210 -252 -16 -88 36 55 110 54 104 -27 -54 1 -109 -308 -332 -377 -228 -301 -67 17 -101 -18 -483 -293 -335 -156 -288 -260 -504 -472 -291 -102 -48 150 84 149 184 240 475 481 500 550 322 176 223 -210 -196 149 438 832 982 1086 558 67 209 362 651 1002 87 181 -333 -40 -232 -470 -500 -615 -572 -529 -1101 -1196 -1520 -1615 -740 -468 246 319 722 753 533 585 50 48 586 235 133 410 369 -812 -516 -736 -387 495 -401 -1669 -1420 -386 -15 1239 672 999 -177 521 -72 990 1033 916 -171 268 -816 -7 -14 615 -175 494 -679 477 786 -432 -626 -1315 -1036 92 -270 318 -514 947 347 264 -154 195 -320 SS 20240107T184341.1Z 8772.780337 336 1 21.18 2 68.62 199.76 94.96 241.80 0.00 1 0.00 1 0 25 6.652e-02 6.448e-03 3.325e-02 2.334e-03 4.669622e-01 1.200001e-03 5.570956e-03 -6.000000e+00 3.840631e-02 223.09 -2.00 3.57 -2.00 319.36 0.00e+00 3.296118e-03 3.158220e-04 6.676397e-04 -6.000000e+00 1.654946e-03 272.28 -2.00 20.00 -2.00 318.87 0.00e+00 2.718 0.000 302.00 328.00 3 3.7219e+00 3.3024e-03 3.5757e-02 -6.0000e+00 9.4765e-02 5.5769e-02 3.8625e-03 2.3973e-02 -6.0000e+00 1.0316e-01 -1.9365e-02 3.1720e-03 1.3028e-02 -6.0000e+00 6.1304e-02 -2.2588e-03 1.6853e-03 5.3854e-03 -6.0000e+00 2.6030e-02 4.8380e-04 1.0407e-06 6.6661e-05 5.2914e-05 -6.0000e+00 1.8237e-03 6.6535e-03 0.0000e+00 12 9 1 12 1 1 99.06 22.19 0.21 0.00665 0.00666 19 10 1 5 0 1058.770 22.19 15.00 17.89 -20116 -2468 -27592 1457 -9601 -10695 -21719 -28586 -31529 -36207 -13656 -13990 -2677 -10727 7573 4025 7972 2729 4762 568 5581 -4582 2674 -2504 1066 -5753 -7120 -5000 -5084 -4598 -3345 1854 -3507 -260 -5262 -49 -3493 -1003 -141 801 -1883 -264 -1599 -428 -547 -27 722 267 -157 388 2373 1527 2129 1713 1734 1275 1443 -594 -992 -419 640 1796 2295 2121 1406 -326 466 -84 680 1497 23 27 -597 551 -605 -322 -1121 -1020 -1580 -1091 -1522 -1455 -1674 -1760 -574 -298 237 391 618 518 241 225 61 160 491 231 99 402 228 -879 -182 -783 -419 433 -135 -1398 -1072 -354 114 812 578 625 -79 524 -95 711 721 765 31 53 -486 65 5 744 -22 439 -669 179 546 -354 -522 -827 -636 -20 -210 209 -217 310 203 238 -14 -51 -74 -393 -46 -696 27 -183 -200 -475 -751 -949 -1217 -380 -421 -87 -460 330 210 437 170 311 40 394 -354 196 -207 91 -546 -693 -465 -465 -430 -344 209 -464 -36 -730 -6 -505 -165 -28 180 -481 -71 -454 -123 -158 -8 213 80 -48 122 785 557 826 710 746 566 658 -276 -453 -189 292 872 1213 1216 846 -193 264 -47 404 992 17 20 -449 398 -417 -204 -666 -593 -970 -750 -1174 -1232 -1524 -1666 -565 -308 254 429 678 558 248 218 57 146 474 244 115 504 305 -1196 -238 -960 -480 495 -164 -1784 -1406 -482 161 1218 916 1025 -129 831 -144 1037 1039 1130 48 85 -788 104 7 1132 -32 634 -941 249 804 -562 -876 -1435 -1124 -36 -398 410 -434 624 411 477 -26 -96 -137 SS 20240107T184904.8Z 8772.784083 339 1 49.90 2 68.96 201.05 95.80 242.65 0.00 1 0.00 1 0 25 5.599e-02 5.727e-03 1.987e-02 1.064e-03 4.748835e-01 5.537189e-04 5.659925e-03 -6.000000e+00 3.232163e-02 223.09 -2.00 3.57 -2.00 319.87 0.00e+00 3.335213e-03 1.691123e-04 6.671403e-04 -6.000000e+00 1.392963e-03 272.28 -2.00 20.00 -2.00 319.39 0.00e+00 2.759 0.000 302.00 328.00 3 2.5706e+00 1.5721e-03 3.6469e-02 -6.0000e+00 7.9750e-02 4.1564e-02 1.8820e-03 2.4665e-02 -6.0000e+00 8.6823e-02 -1.0325e-02 1.6556e-03 1.3605e-02 -6.0000e+00 5.1593e-02 -7.6095e-03 8.6476e-04 5.6885e-03 -6.0000e+00 2.1903e-02 1.4673e-03 -1.4776e-04 3.1387e-05 5.9294e-05 -6.0000e+00 1.5347e-03 7.4154e-03 0.0000e+00 10 0 0 10 0 0 99.75 22.19 0.25 0.00742 0.00631 251 51 1 5 0 198.740 22.19 15.00 17.90 -25805 -12241 -21084 -12204 -19233 -13742 -25914 -15387 -16087 -11563 -20065 -10014 -12649 -8267 -962 -1294 -90 -480 2262 -912 1050 -2236 1830 -1571 -2143 -4297 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366 -362 -1401 -1398 -602 253 1285 829 888 -131 476 -36 1027 1087 921 -376 299 -919 21 70 633 -277 509 -841 580 643 -356 -702 -1206 -1094 195 -498 476 -466 967 463 388 -283 171 -410