# # 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 = 53.814812 km # Date (UTC) = 2016-01-12T10:50:10.025 # Date (julian) = 2457399.95150492 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6498.1360 7.9614838e+10 0.036271233 0.031721138 93.081644 36.375593 6500.5798 7.1154621e+10 0.045463594 0.032458039 93.167489 36.224393 6503.0235 6.3187517e+10 0.054835018 0.033194941 93.254236 36.072376 6505.4672 5.6265739e+10 0.064529126 0.033931842 93.326156 35.942923 6507.9110 5.0794164e+10 0.074788107 0.034668743 93.398075 35.813469 6510.3547 4.6615147e+10 0.085801376 0.035405645 93.474658 35.679349 6512.7984 4.2872286e+10 0.097443535 0.036142546 93.551368 35.545100 6515.2422 3.9532775e+10 0.10978422 0.036879447 93.623827 35.410853 6517.6859 3.6301674e+10 0.12270376 0.037616349 93.695746 35.276605 6520.1296 3.3110916e+10 0.13614342 0.038353250 93.767665 35.146202 6522.5734 2.9937511e+10 0.14844151 0.039067396 93.839584 35.016749 6525.0171 2.6901482e+10 0.15652575 0.039780262 93.911503 34.883862 6527.4608 2.4369432e+10 0.16255393 0.041051048 93.983423 34.749615 6529.9046 2.2263970e+10 0.16857663 0.043676696 94.055342 34.618390 6532.3483 2.0613762e+10 0.17344042 0.046975168 94.127261 34.488937 6534.7920 1.9234294e+10 0.17657439 0.048166123 94.196573 34.356861 6537.2358 1.7889106e+10 0.17794312 0.048796385 94.263707 34.222594 6539.6795 1.6472375e+10 0.17814730 0.050466158 94.337757 34.079525 6542.1232 1.4955187e+10 0.17589013 0.051049028 94.419948 33.926094 6544.5670 1.3483284e+10 0.17329966 0.052104291 94.492580 33.787874 6547.0107 1.2178184e+10 0.17064731 0.053291438 94.559703 33.658421 6549.4544 1.1144670e+10 0.16792864 0.054429395 94.626829 33.526337 6551.8982 1.0286284e+10 0.16584509 0.055551025 94.693956 33.392090 6554.3419 9.4933492e+09 0.16302580 0.054839555 94.761082 33.260062 6556.7856 8.7437582e+09 0.16051888 0.053897621 94.828205 33.130609 6559.2294 8.0373557e+09 0.15742232 0.052361291 94.895329 32.999347 6561.6731 7.4036993e+09 0.15437856 0.051040987 94.962452 32.865100 6564.1168 6.8568238e+09 0.15102870 0.048718643 95.029576 32.732251 6566.5606 6.3683537e+09 0.14856311 0.046865767 95.096700 32.602797 6569.0043 5.8990936e+09 0.14613741 0.044852705 95.163823 32.473344 6571.4480 5.4597184e+09 0.14437551 0.044380905 95.230947 32.343891 6573.8918 5.0463385e+09 0.14169738 0.042941851 95.298070 32.213861 6576.3355 4.7002842e+09 0.13896321 0.040985213 95.365194 32.079614 6578.7792 4.4014484e+09 0.13550671 0.037419096 95.432152 31.945532 6581.2230 4.1391295e+09 0.13222270 0.035529088 95.494480 31.816079 6583.6667 3.8824457e+09 0.12923466 0.034684207 95.556808 31.686626 6586.1104 3.6211414e+09 0.12606349 0.033169868 95.619148 31.552604 6588.5542 3.3747391e+09 0.12330294 0.033194861 95.681489 31.418335 6590.9979 3.1353134e+09 0.11954920 0.029205794 95.747960 31.288224 6593.4416 2.9237370e+09 0.11598820 0.026691625 95.815083 31.158771 6595.8854 2.7343031e+09 0.11190259 0.025715387 95.878477 31.029319 6598.3291 2.5701024e+09 0.10909016 0.025250036 95.940805 30.899867 6600.7728 2.4274283e+09 0.10837854 0.026578702 96.003133 30.767095 6603.2166 2.2967494e+09 0.10745758 0.026535059 96.065461 30.632847 6605.6603 2.1664256e+09 0.10697605 0.027218993 96.127791 30.501506 6608.1040 2.0462760e+09 0.10490515 0.023729621 96.190123 30.372053 6610.5478 1.9305064e+09 0.10172024 0.024526369 96.252452 30.242600 6612.9915 1.8141552e+09 0.10040047 0.023579932 96.314780 30.113147 6615.4352 1.7124844e+09 0.099083976 0.023264923 96.375024 29.983694 6617.8790 1.6207540e+09 0.098219338 0.023730672 96.432560 29.854241 6620.3227 1.5345892e+09 0.097521031 0.024871192 96.494880 29.716414 6622.7664 1.4493029e+09 0.096093003 0.024553990 96.566114 29.562984 6625.2102 1.3610492e+09 0.094602240 0.025648412 96.632680 29.422126 6627.6539 1.2791031e+09 0.092638683 0.025569407 96.695011 29.292672 6630.0976 1.2090035e+09 0.091207828 0.025928542 96.755238 29.163220 6632.5414 1.1430773e+09 0.089336266 0.026097261 96.812770 29.033767 6634.9851 1.0821528e+09 0.087689004 0.026398702 96.870307 28.904308 6637.4288 1.0223674e+09 0.085985202 0.025951376 96.927851 28.774835 6639.8726 9.6347261e+08 0.085470526 0.025316195 96.986676 28.645368 6642.3163 9.0956834e+08 0.085364168 0.025164640 97.049004 28.515914 6644.7600 8.5868462e+08 0.084079712 0.025425751 97.110461 28.386460 6647.2038 8.1070700e+08 0.082559070 0.026545071 97.167997 28.257007 6649.6475 7.6547676e+08 0.081342461 0.026741122 97.225533 28.127554 6652.0912 7.2320702e+08 0.080779127 0.027275627 97.283065 27.998101 6654.5350 6.8645847e+08 0.079979734 0.027808319 97.340597 27.868649 6656.9787 6.5703581e+08 0.078147412 0.028882429 97.398133 27.739196 6659.4224 6.2349849e+08 0.076821561 0.031746476 97.455669 27.609743 6661.8662 5.9579420e+08 0.075508048 0.032976114 97.513205 27.480289 6664.3099 5.6962779e+08 0.074435725 0.031072125 97.570742 27.350835 6666.7536 5.3741657e+08 0.074570990 0.027055453 97.630577 27.205862 6669.1974 5.0620043e+08 0.073605113 0.028152979 97.690814 27.058173 6671.6411 4.7526634e+08 0.073872300 0.026874485 97.748346 26.928721 6674.0848 4.5163634e+08 0.073176002 0.029026366 97.805879 26.799268 6676.5286 4.3513174e+08 0.070784418 0.032054392 97.863414 26.669815 6678.9723 4.1711233e+08 0.069922474 0.030286288 97.920950 26.540362 6681.4160 3.9686136e+08 0.071194892 0.029976544 97.974445 26.410909 6683.8598 3.7574072e+08 0.071714616 0.032448600 98.027186 26.281456 6686.3035 3.5632004e+08 0.070990022 0.033937674 98.083563 26.151987 6688.7472 3.4221903e+08 0.067962062 0.033957681 98.141108 26.022514 6691.1910 3.3122252e+08 0.066699693 0.032956204 98.200484 25.880631 6693.6347 3.1989973e+08 0.065663685 0.031386342 98.260756 25.732682 6696.0784 3.0518376e+08 0.065418448 0.029708379 98.314651 25.600393 6698.5222 2.8646629e+08 0.064427430 0.030934572 98.367392 25.470941 6700.9659 2.7438558e+08 0.062432564 0.031384165 98.420132 25.341488 6703.4096 2.6315499e+08 0.062217146 0.034700306 98.472872 25.212035 6705.8534 2.5285285e+08 0.062376966 0.038185747 98.525613 25.085820 6708.2971 2.3906697e+08 0.062185068 0.040367126 98.578353 24.961161 6710.7408 2.2621740e+08 0.060845684 0.040641507 98.638768 24.822770 6713.1846 2.1789161e+08 0.058803083 0.044354219 98.704526 24.674819 6715.6283 2.1104680e+08 0.056825573 0.048021212 98.760329 24.541013 6718.0720 2.0283791e+08 0.054710848 0.049924625 98.813070 24.411561 6720.5158 1.8926120e+08 0.054178075 0.050360004 98.862554 24.285363 6722.9595 1.8018453e+08 0.053625586 0.049418993 98.910499 24.160705 6725.4032 1.6961442e+08 0.049411384 0.041324129 98.965759 24.022229 6727.8470 1.6006956e+08 0.048467979 0.039831962 99.026035 23.874279 6730.2907 1.5487768e+08 0.047100868 0.040777510 99.080522 23.740540 6732.7344 1.5109796e+08 0.045564090 0.043875419 99.133262 23.611087 6735.1782 1.4973035e+08 0.045649142 0.049482587 99.191147 23.472748 6737.6219 1.4533188e+08 0.047360140 0.056116695 99.251423 23.330277 6740.0656 1.3784900e+08 0.047339248 0.064162513 99.301123 23.198972 6742.5094 1.3099271e+08 0.044261495 0.069851959 99.349068 23.069520 6744.9531 1.2415531e+08 0.040044393 0.078530623 99.400715 22.940067 6747.3969 1.1942712e+08 0.035330950 0.067224541 99.453455 22.810613 6749.8406 1.1377188e+08 0.033080967 0.072047780 99.507606 22.672227 6752.2843 1.1009031e+08 0.029637862 0.073805469 99.562401 22.529757 6754.7281 1.0714158e+08 0.027749133 0.075042675 99.621917 22.382566 6757.1718 1.0187938e+08 0.024696724 0.076218739 99.681745 22.235463 6759.6155 96543208. 0.025455823 0.075968489 99.729690 22.110805 6762.0593 88351621. 0.028901865 0.077955269 99.777635 21.986146 6764.5030 81637856. 0.031812040 0.079507382 99.832092 21.844555 6766.9467 79221143. 0.031893391 0.081855239 99.886630 21.703719 6769.3905 79149011. 0.026294931 0.085401275 99.939378 21.574247 6771.8342 81067653. 0.021656961 0.091328403 99.992209 21.444251 6774.2779 80153312. 0.016943532 0.097255531 100.04700 21.301781 6776.7217 76547028. 0.012108766 0.10318266 100.10180 21.158131 6779.1654 70797678. 0.0071015506 0.10910979 100.15660 21.010181 6781.6091 67442645. 0.0021648973 0.11503691 100.20872 20.871326 6784.0529 66007412. -0.0026730329 0.12096404 100.25667 20.746666 6786.4966 64381493. -0.0075904244 0.12689117 100.30670 20.616579 6788.9403 61749303. -0.012746924 0.13281830 100.36150 20.474109 6791.3841 56054858. -0.018640249 0.13874543 100.41629 20.329010 6793.8278 52724867. -0.024815769 0.14467255 100.47109 20.181060 6796.2715 51482226. -0.031605663 0.15059968 100.52588 20.036700 6798.7153 51468533. -0.040936759 0.15652681 100.58068 19.894231 6801.1590 50895554. -0.076299475 0.16245394 100.63548 19.751761 6803.6027 48153545. -0.054830759 0.16838107 100.69019 19.609426 6806.0465 44005648. 0.0031578567 0.17430819 100.73337 19.484720