# # Data product developed by Dr. E. Thiemann from the # Laboratory for Atmospheric and Space Physics, Boulder, Colorado # in the frame of the PROBA2 guest investigator program. # # Please address your questions to E. Thiemann (thiemann@lasp.colorado.edu) and # to the LYRA Principal Investigator M. Dominique (marie.dominique@oma.be) # # PROBA2 data products are open to all. # Users should however refer to the following paper: http://arxiv.org/abs/1708.08833 # and acknowledge the instrument according to the rules described # at http://proba2.oma.be/data/termsOfUse in their papers and presentations # # Website reference http://proba2.oma.be/lyra/data/EarthAtmosphere/ # # Description: # Summed neutral N2 and O number density profiles, spanning altitudes between 150 and 400 km # retrieved from LYRA data acquired during occultations by the unit 3 (backup unit) zirconium # channel (bandpass: 1-2 nm + 6-20 nm). # # Radial distance is the distance from the center of Earth expressed in km to which the density corresponds. # Density O-N2 provides the summed number density of neutral O and N2 in units of radial distance and cm^-3. # The systematic error is a signed value (asymmetric) in fractional units and is primarily from the error made by # assuming that the absorption cross-sections of O and N2 are equal; a secondary source of systematic error is # from using a single-scale height atmosphere in the reference atmosphere used by the retrieval algorithm. # The random error is an unsigned value (to be applied symmetrically to the measurement) in fractional # units and gathers the uncertainties from solar spectra, solar variability and measurement noise. # Both uncertainties are described in http://arxiv.org/abs/1708.08833. # The Longitude and Latitude (in degrees) columns refer to the tangential point along the # line-of-sight, where most of the absorption occurs. # # Scale height = 48.874165 km # Date (UTC) = 2015-12-12T09:26:40.863 # Date (julian) = 2457368.89352851 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6491.8170 4.3804853e+10 0.015839248 0.029815650 114.79474 26.821344 6493.7984 4.1528507e+10 0.020843732 0.030413125 114.84462 26.717334 6495.7797 3.8943492e+10 0.025768810 0.031010601 114.89516 26.612359 6497.7611 3.6535332e+10 0.030767667 0.031608077 114.94396 26.509939 6499.7425 3.4535114e+10 0.036068455 0.032205552 114.98888 26.413187 6501.7238 3.2949276e+10 0.041914174 0.032803028 115.03380 26.316435 6503.7052 3.1489834e+10 0.048356721 0.033400503 115.07872 26.221123 6505.6866 3.0073896e+10 0.055529993 0.033997979 115.12364 26.127827 6507.6679 2.8735558e+10 0.063604437 0.034595454 115.16856 26.034531 6509.6493 2.7425202e+10 0.072621490 0.035192930 115.21348 25.939428 6511.6307 2.6185002e+10 0.082714849 0.035790406 115.25840 25.842676 6513.6120 2.4999921e+10 0.093852439 0.036387881 115.30332 25.745925 6515.5934 2.3732031e+10 0.10587124 0.036985357 115.34607 25.651338 6517.5748 2.2496577e+10 0.11884347 0.037582832 115.38754 25.558030 6519.5561 2.1259138e+10 0.13258494 0.038180308 115.42902 25.464722 6521.5375 2.0025445e+10 0.14693508 0.038777783 115.47302 25.371422 6523.5189 1.8902659e+10 0.15735955 0.039307711 115.51794 25.278126 6525.5002 1.7767380e+10 0.16623839 0.039725125 115.56286 25.184830 6527.4816 1.6719169e+10 0.17379812 0.041066111 115.60487 25.088627 6529.4630 1.5724243e+10 0.17840031 0.042973233 115.64634 24.991875 6531.4443 1.4761076e+10 0.18084644 0.045875395 115.68781 24.895123 6533.4257 1.3857312e+10 0.18190936 0.047700492 115.72927 24.801645 6535.4071 1.2963669e+10 0.18113948 0.048047719 115.77073 24.708349 6537.3884 1.2150885e+10 0.18054027 0.048868348 115.81220 24.615053 6539.3698 1.1408186e+10 0.17927776 0.050091243 115.85367 24.521744 6541.3512 1.0700298e+10 0.17735028 0.051212653 115.89514 24.428435 6543.3325 1.0015372e+10 0.17551070 0.051469164 115.93716 24.335129 6545.3139 9.3507642e+09 0.17390619 0.052458379 115.98208 24.241832 6547.2952 8.7322415e+09 0.17223200 0.053399642 116.02700 24.148536 6549.2766 8.1824536e+09 0.17018446 0.054248171 116.07100 24.054323 6551.2580 7.6910980e+09 0.16848245 0.055326306 116.11247 23.957571 6553.2393 7.2480055e+09 0.16691532 0.055214752 116.15393 23.860819 6555.2207 6.8644325e+09 0.16494487 0.054667915 116.19540 23.765351 6557.2021 6.5060303e+09 0.16258921 0.053739445 116.23687 23.672055 6559.1834 6.1572047e+09 0.15960308 0.052366476 116.27833 23.578760 6561.1648 5.8294577e+09 0.15651222 0.051291467 116.31815 23.485458 6563.1462 5.4832143e+09 0.15380399 0.049759278 116.35617 23.392149 6565.1275 5.1728746e+09 0.15102592 0.048173575 116.39418 23.298840 6567.1089 4.8742794e+09 0.14824139 0.046525106 116.43421 23.205539 6569.0903 4.5983380e+09 0.14524125 0.044858300 116.47567 23.112243 6571.0716 4.3501289e+09 0.14292873 0.044483710 116.51713 23.018946 6573.0530 4.1188938e+09 0.14072470 0.043614949 116.55860 22.925650 6575.0344 3.9113171e+09 0.13859365 0.042340227 116.60007 22.832354 6577.0157 3.7164436e+09 0.13643889 0.040195660 116.64153 22.739057 6578.9971 3.5385702e+09 0.13376885 0.037075079 116.68025 22.645761 6580.9785 3.3647449e+09 0.13174833 0.035616511 116.71826 22.552466 6582.9598 3.2066183e+09 0.13021733 0.035032598 116.75627 22.459170 6584.9412 3.0517518e+09 0.12844580 0.034002806 116.79740 22.365863 6586.9226 2.9012229e+09 0.12657052 0.033159370 116.83886 22.272554 6588.9039 2.7678301e+09 0.12473434 0.033078061 116.88030 22.179245 6590.8853 2.6435792e+09 0.12241913 0.029415283 116.91831 22.085949 6592.8667 2.5381933e+09 0.12032275 0.027231736 116.95632 21.992653 6594.8480 2.4288640e+09 0.11794609 0.025706999 116.99532 21.898026 6596.8294 2.3030211e+09 0.11537392 0.025723503 117.04197 21.793066 6598.8108 2.1769352e+09 0.11350733 0.025020082 117.08862 21.688106 6600.7921 2.0552330e+09 0.11331422 0.026618329 117.13059 21.589464 6602.7735 1.9589102e+09 0.11224833 0.026856571 117.16860 21.496168 6604.7549 1.8762283e+09 0.11102810 0.026519483 117.20661 21.402873 6606.7362 1.7970111e+09 0.10974838 0.026181003 117.24462 21.311815 6608.7176 1.7162743e+09 0.10677633 0.023713399 117.28263 21.221974 6610.6989 1.6415551e+09 0.10368710 0.024670809 117.32064 21.132133 6612.6803 1.5660687e+09 0.10200550 0.023812446 117.36125 21.039679 6614.6617 1.4987674e+09 0.10061982 0.023484620 117.40272 20.946370 6616.6430 1.4351352e+09 0.099100034 0.023383225 117.44419 20.853061 6618.6244 1.3750866e+09 0.098566667 0.024242301 117.48269 20.759763 6620.6058 1.3231054e+09 0.098112052 0.024962409 117.52070 20.666467 6622.5871 1.2669730e+09 0.097131838 0.024601715 117.55871 20.573171 6624.5685 1.2194133e+09 0.095824328 0.025166630 117.59672 20.479875 6626.5499 1.1730227e+09 0.094479142 0.025890312 117.63473 20.386578 6628.5312 1.1327810e+09 0.093357972 0.025918784 117.67308 20.292722 6630.5126 1.0882396e+09 0.092095808 0.025929565 117.71584 20.191650 6632.4940 1.0406161e+09 0.090856301 0.026091576 117.75860 20.090579 6634.4753 9.9105792e+08 0.089673711 0.026361516 117.79899 19.993385 6636.4567 9.3771845e+08 0.088488210 0.026372396 117.83701 19.900077 6638.4381 8.9525165e+08 0.087659172 0.025652557 117.87502 19.806768 6640.4194 8.5590368e+08 0.087961100 0.025219333 117.91094 19.713467 6642.4008 8.2059687e+08 0.087897902 0.025168098 117.94549 19.620170 6644.3822 7.9296021e+08 0.086869715 0.025384910 117.98004 19.526873 6646.3635 7.6328634e+08 0.085843389 0.026108323 118.01706 19.436037 6648.3449 7.3649281e+08 0.084798639 0.027195160 118.05507 19.346196 6650.3263 7.1487361e+08 0.084096305 0.026329928 118.09308 19.256356 6652.3076 6.8455300e+08 0.083560153 0.027335162 118.13498 19.154148 6654.2890 6.5718891e+08 0.082688985 0.027913111 118.17774 19.049188 6656.2704 6.2474947e+08 0.080956212 0.028260712 118.21933 18.947941 6658.2517 5.9415899e+08 0.079615485 0.030507520 118.25734 18.858100 6660.2331 5.6797439e+08 0.078373843 0.031837867 118.29535 18.768259 6662.2145 5.4525164e+08 0.077155128 0.032923948 118.33215 18.677200 6664.1958 5.3009462e+08 0.076133400 0.031489579 118.36671 18.583891 6666.1772 5.1392983e+08 0.076342523 0.026943123 118.40126 18.490583 6668.1586 4.9827951e+08 0.075741096 0.027611084 118.43958 18.393719 6670.1399 4.7566577e+08 0.075524193 0.027263810 118.48234 18.292647 6672.1213 4.5360291e+08 0.075470952 0.026949899 118.52510 18.191574 6674.1027 4.3668572e+08 0.074797591 0.029041384 118.56060 18.097388 6676.0840 4.1734431e+08 0.072860360 0.031767873 118.59515 18.004091 6678.0654 4.0233226e+08 0.072104867 0.030892883 118.62970 17.910795 6680.0467 3.8919261e+08 0.072387771 0.029451511 118.66768 17.820925 6682.0281 3.7673715e+08 0.073095468 0.030446023 118.70569 17.731084 6684.0095 3.7043982e+08 0.073221887 0.032654573 118.74379 17.640149 6685.9908 3.5581347e+08 0.072796906 0.033751415 118.78266 17.539076 6687.9722 3.3965785e+08 0.070628009 0.033800688 118.82153 17.438003 6689.9536 3.2689292e+08 0.068782490 0.033157652 118.85814 17.341007 6691.9349 3.1257329e+08 0.067816635 0.032780678 118.89270 17.247699 6693.9163 3.0485649e+08 0.066834279 0.031289738 118.92726 17.154391 6695.8977 2.9483271e+08 0.066667825 0.029694582 118.96700 17.056180 6697.8790 2.8136056e+08 0.065924023 0.030202509 119.00977 16.955108 6699.8604 2.7029572e+08 0.064400412 0.030796524 119.05204 16.854698 6701.8418 2.5928679e+08 0.062652445 0.032644564 119.08660 16.764858 6703.8231 2.5121088e+08 0.062767641 0.035734986 119.12115 16.675017 6705.8045 2.4091944e+08 0.062731929 0.038098849 119.15642 16.583323 6707.7859 2.2877922e+08 0.062381694 0.040074252 119.19529 16.482250 6709.7672 2.1844658e+08 0.061356429 0.040644545 119.23416 16.381177 6711.7486 2.0850039e+08 0.059349660 0.041543934 119.27048 16.284712 6713.7300 2.0083135e+08 0.057237184 0.046326752 119.30503 16.191416 6715.7113 1.9536522e+08 0.055384446 0.048106117 119.33958 16.098120 6717.6927 1.9266891e+08 0.053178410 0.049831422 119.37716 15.999381 6719.6741 1.9056438e+08 0.051406692 0.050729431 119.41604 15.898294 6721.6554 1.8104941e+08 0.051322434 0.050501383 119.45492 15.797209 6723.6368 1.6861185e+08 0.049403988 0.049724095 119.49379 15.696136 6725.6182 1.5458347e+08 0.045133451 0.041189885 119.53267 15.595064 6727.5995 1.4491410e+08 0.043663205 0.040161647 119.56915 15.500215 6729.5809 1.4060152e+08 0.042378385 0.040658249 119.60370 15.410375 6731.5623 1.3233883e+08 0.040219819 0.042869019 119.63826 15.320534 6733.5436 1.2764172e+08 0.038700163 0.046875791 119.67566 15.223278 6735.5250 1.2157249e+08 0.039031556 0.049850746 119.71454 15.122205 6737.5064 1.1682449e+08 0.039827922 0.055748567 119.75341 15.021132 6739.4877 1.1469645e+08 0.039613935 0.063423427 119.79228 14.920060 6741.4691 1.0889677e+08 0.037452907 0.067096549 119.83116 14.818988 6743.4505 1.0303232e+08 0.032917450 0.074086168 119.87003 14.717916 6745.4318 99493926. 0.030204453 0.078748418 119.90890 14.616843 6747.4132 91970572. 0.024906869 0.067218918 119.94778 14.515771 6749.3945 90227382. 0.023554806 0.072169906 119.97933 14.425278 6751.3759 88673710. 0.020424772 0.073870609 120.01043 14.335425 6753.3573 88099753. 0.018087988 0.074133510 120.04192 14.245019 6755.3386 88872281. 0.016035049 0.074456871 120.08079 14.143947 6757.3200 80954277. 0.012744200 0.075768910 120.11966 14.042875 6759.3014 77519444. 0.012589858 0.075892681 120.15854 13.941802 6761.2827 70982053. 0.011790371 0.077991585 120.19741 13.840729 6763.2641 69639943. 0.014667911 0.077242109 120.23628 13.739656 6765.2455 69002602. 0.014382121 0.079576005 120.27164 13.642099 6767.2268 64202956. 0.0079595844 0.081721765 120.30663 13.544914 6769.2082 63105916. -0.0070065447 0.084959249 120.34291 13.446439 6771.1896 61544782. -0.074165041 0.089764931 120.38178 13.345367 6773.1709 58503764. -0.025434347 0.094570614 120.42066 13.244294 6775.1523 53772281. 0.094032470 0.099376297 120.45658 13.143222