# # 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 = 58.296166 km # Date (UTC) = 2015-11-18T08:36:46.404 # Date (julian) = 2457344.85887042 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6494.7653 7.0830466e+10 0.032144211 0.030704694 126.36414 29.758707 6497.0987 6.5599809e+10 0.039074962 0.031408325 126.42170 29.601740 6499.4321 6.0736901e+10 0.045950640 0.032111956 126.48009 29.445614 6501.7655 5.6375619e+10 0.052925743 0.032815586 126.54288 29.293881 6504.0989 5.2337034e+10 0.060139962 0.033519217 126.60435 29.142147 6506.4323 4.8740953e+10 0.067776321 0.034222848 126.66191 28.990412 6508.7657 4.5331904e+10 0.075992483 0.034926479 126.72123 28.838677 6511.0991 4.1956738e+10 0.084868523 0.035630110 126.78402 28.686944 6513.4325 3.8687118e+10 0.094511503 0.036333741 126.84458 28.535210 6515.7659 3.5640321e+10 0.10505396 0.037037371 126.90213 28.383475 6518.0993 3.2747669e+10 0.11648105 0.037741002 126.95968 28.231741 6520.4327 3.0097679e+10 0.12887842 0.038444633 127.01724 28.080007 6522.7661 2.7728052e+10 0.14020366 0.039117861 127.07044 27.939740 6525.0995 2.5726430e+10 0.14863127 0.039770860 127.12080 27.806975 6527.4329 2.4005231e+10 0.15578224 0.041030756 127.17419 27.664041 6529.7663 2.2359448e+10 0.16277133 0.043456424 127.23174 27.507074 6532.0997 2.0635812e+10 0.16899387 0.046767476 127.28930 27.352771 6534.4331 1.8923393e+10 0.17290037 0.048065711 127.34685 27.201036 6536.7665 1.7206848e+10 0.17494798 0.048476305 127.40441 27.049302 6539.0999 1.5602780e+10 0.17546715 0.049764552 127.46196 26.897569 6541.4333 1.4158385e+10 0.17426713 0.051186014 127.51951 26.745834 6543.7667 1.2899646e+10 0.17186671 0.051583117 127.57706 26.594099 6546.1001 1.1899978e+10 0.16937624 0.052546892 127.62549 26.460621 6548.4335 1.1073393e+10 0.16778703 0.053797104 127.67127 26.332435 6550.7669 1.0345503e+10 0.16587199 0.055177385 127.72401 26.190333 6553.1003 9.6399662e+09 0.16429702 0.055284646 127.78157 26.038598 6555.4337 8.9119146e+09 0.16216936 0.054488950 127.83557 25.886864 6557.7671 8.2134292e+09 0.16010409 0.053385284 127.88789 25.735131 6560.1005 7.5557617e+09 0.15772428 0.052183691 127.94423 25.583396 6562.4339 6.9521600e+09 0.15497580 0.050467026 128.00178 25.431662 6564.7673 6.4402104e+09 0.15249370 0.048423854 128.04924 25.296189 6567.1007 6.0071128e+09 0.15039706 0.046532037 128.09503 25.163425 6569.4341 5.6321515e+09 0.14840992 0.044880678 128.14873 25.017895 6571.7675 5.2576062e+09 0.14672744 0.044293653 128.20629 24.866161 6574.1009 4.8611764e+09 0.14420815 0.042806539 128.25986 24.714426 6576.4343 4.4856203e+09 0.14186579 0.040871493 128.31218 24.562692 6578.7677 4.1864056e+09 0.13870277 0.037437308 128.35894 24.430984 6581.1011 3.9447179e+09 0.13559016 0.035565991 128.40471 24.302798 6583.4345 3.7362486e+09 0.13277637 0.034801735 128.45485 24.158925 6585.7679 3.5233939e+09 0.12951601 0.033356843 128.50718 24.007190 6588.1013 3.2904520e+09 0.12701516 0.033346097 128.55950 23.855456 6590.4347 3.0817443e+09 0.12408482 0.030253428 128.61182 23.703722 6592.7681 2.9142624e+09 0.12148721 0.027327451 128.65862 23.571854 6595.1015 2.7635277e+09 0.11915776 0.025634099 128.70440 23.443667 6597.4349 2.6257104e+09 0.11676931 0.025585484 128.75450 23.299955 6599.7683 2.4803289e+09 0.11582891 0.024975941 128.80683 23.148221 6602.1017 2.3215174e+09 0.11568688 0.027429830 128.85523 23.000401 6604.4351 2.1732832e+09 0.11468714 0.026329637 128.90232 22.853899 6606.7685 2.0572453e+09 0.11399792 0.026122955 128.94831 22.718894 6609.1019 1.9608609e+09 0.11089827 0.023736207 128.99409 22.586130 6611.4353 1.8818901e+09 0.10798257 0.024680848 129.04414 22.440986 6613.7687 1.7952117e+09 0.10688663 0.023855637 129.09647 22.289251 6616.1021 1.6883008e+09 0.10537435 0.023298327 129.14491 22.141395 6618.4355 1.5869572e+09 0.10479264 0.024099669 129.19200 21.994893 6620.7689 1.5003989e+09 0.10393165 0.025014983 129.23800 21.859794 6623.1023 1.4276993e+09 0.10224250 0.024529737 129.28378 21.727030 6625.4357 1.3662461e+09 0.10052497 0.025917559 129.33041 21.585394 6627.7691 1.3017927e+09 0.098381748 0.025613913 129.37750 21.438892 6630.1025 1.2390097e+09 0.096724034 0.025928554 129.42363 21.305843 6632.4359 1.1837458e+09 0.094616608 0.026084617 129.46941 21.177658 6634.7693 1.1343377e+09 0.092706176 0.026382961 129.51591 21.036515 6637.1027 1.0848986e+09 0.090690694 0.026111097 129.56300 20.884781 6639.4361 1.0295664e+09 0.089606988 0.025472191 129.61009 20.736389 6641.7695 9.7666492e+08 0.089846815 0.025150913 129.65718 20.589886 6644.1029 9.2830609e+08 0.088826420 0.025354731 129.69998 20.456713 6646.4363 8.8781752e+08 0.087912058 0.026146009 129.74118 20.328527 6648.7697 8.5698262e+08 0.086791629 0.027479548 129.78843 20.187544 6651.1031 8.2273696e+08 0.086450050 0.026563205 129.84075 20.035810 6653.4365 7.8413122e+08 0.086094035 0.027748542 129.88977 19.887384 6655.7699 7.4429876e+08 0.084550247 0.027928356 129.93686 19.740882 6658.1033 7.0509427e+08 0.083080312 0.030244354 129.97970 19.607585 6660.4367 6.7692966e+08 0.081540191 0.032022973 130.02090 19.479398 6662.7701 6.4704168e+08 0.080181941 0.032612177 130.06527 19.341382 6665.1035 6.1619357e+08 0.079527702 0.028377473 130.11236 19.194879 6667.4369 5.9036954e+08 0.078962958 0.027263954 130.15578 19.059820 6669.7703 5.6811109e+08 0.078052224 0.027564506 130.19698 18.931615 6672.1037 5.5085904e+08 0.077687829 0.026939731 130.24079 18.793024 6674.4371 5.3029660e+08 0.076461049 0.029323552 130.28787 18.641289 6676.7705 5.0499248e+08 0.073999008 0.032210336 130.33219 18.492329 6679.1039 4.7643295e+08 0.073241229 0.030181874 130.37405 18.345828 6681.4373 4.5048330e+08 0.074270394 0.029992885 130.41550 18.210662 6683.7707 4.3317353e+08 0.074472506 0.032318121 130.45670 18.082476 6686.1041 4.1830141e+08 0.073634690 0.033821680 130.50046 17.946328 6688.4376 4.0386765e+08 0.070578908 0.033886192 130.54756 17.799825 6690.7710 3.8175396e+08 0.068934738 0.033027512 130.59465 17.653323 6693.1044 3.6049055e+08 0.068008746 0.031568290 130.64174 17.506822 6695.4378 3.4418373e+08 0.067511315 0.029779064 130.68242 17.371532 6697.7712 3.3103231e+08 0.066884282 0.030188856 130.71905 17.243345 6700.1046 3.2182194e+08 0.065293155 0.030745269 130.76015 17.109561 6702.4380 3.1089880e+08 0.064012075 0.033226439 130.80724 16.968291 6704.7714 2.9752536e+08 0.064446952 0.036556330 130.85163 16.824319 6707.1048 2.8233444e+08 0.064242298 0.040171820 130.89348 16.677818 6709.4382 2.6699065e+08 0.063591061 0.040853854 130.93494 16.542403 6711.7716 2.5175151e+08 0.061627568 0.041570054 130.97615 16.414215 6714.1050 2.4395925e+08 0.059370755 0.047311299 131.01762 16.278316 6716.4384 2.3598305e+08 0.057498448 0.049047024 131.05948 16.131814 6718.7718 2.2933856e+08 0.055024784 0.051014373 131.10401 15.985312 6721.1052 2.2164970e+08 0.055252461 0.050335584 131.15110 15.838811 6723.4386 2.0665907e+08 0.053965297 0.049613538 131.19505 15.692309 6725.7720 1.9463026e+08 0.049866166 0.041093811 131.23691 15.545807 6728.1054 1.8799596e+08 0.049029935 0.039777435 131.27832 15.415041 6730.4388 1.8550663e+08 0.047455536 0.040980503 131.31952 15.291432 6732.7722 1.8620530e+08 0.045925924 0.043882362 131.36105 15.156308 6735.1056 1.8000622e+08 0.046042509 0.049405499 131.40291 15.009805 6737.4390 1.7017998e+08 0.047824380 0.055533906 131.44477 14.863303 6739.7724 1.6153385e+08 0.048080897 0.063771783 131.48663 14.716801 6742.1058 1.5121317e+08 0.045849816 0.068868476 131.52849 14.573860 6744.4392 1.4363832e+08 0.041330489 0.078133099 131.57035 14.432590 6746.7726 1.3751556e+08 0.037458858 0.070005283 131.61220 14.287295 6749.1060 1.3357090e+08 0.036536585 0.072248918 131.65406 14.140794 6751.4394 1.2943678e+08 0.033066215 0.073897440 131.70041 13.998782 6753.7728 1.2863534e+08 0.030993462 0.075478124 131.74750 13.857512 6756.1062 1.2520818e+08 0.028521601 0.074440110 131.78468 13.728629 6758.4396 1.2032026e+08 0.028385062 0.074634861 131.82130 13.600442 6760.7730 1.1806260e+08 0.028973428 0.077535300 131.86192 13.462279 6763.1064 1.1317908e+08 0.034446763 0.076761735 131.90378 13.321010 6765.4398 1.0926920e+08 0.037025429 0.079611476 131.94564 13.175286 6767.7732 1.0469503e+08 0.035221665 0.081110007 131.98750 13.028785 6770.1066 99886167. 0.030400256 0.087138201 132.02935 12.887201 6772.4400 1.0017565e+08 0.026231759 0.092797724 132.07121 12.745780 6774.7734 1.0071282e+08 0.022061839 0.098457246 132.11306 12.599279 6777.1068 96024747. 0.017994553 0.10411677 132.15491 12.453392 6779.4402 89916841. 0.013964142 0.10977629 132.19677 12.312122 6781.7736 85635582. 0.0099032669 0.11543582 132.23863 12.170852 6784.1070 84481483. 0.0057785895 0.12109534 132.28049 12.029582 6786.4404 85079732. 0.0016174584 0.12675486 132.32081 11.886768 6788.7738 83405332. -0.0024938244 0.13241438 132.35744 11.740265 6791.1072 80032461. -0.0065647821 0.13807391 132.39607 11.595772 6793.4406 76358192. -0.010619320 0.14373343 132.43793 11.454503 6795.7740 70917795. -0.014605842 0.14939295 132.47979 11.313233 6798.1074 68839400. -0.018648480 0.15505248 132.52164 11.171963 6800.4408 65744037. -0.022632282 0.16071200 132.56349 11.030694 6802.7742 62238449. -0.026572882 0.16637152 132.60535 10.889424 6805.1076 58967595. -0.030495190 0.17203104 132.64777 10.728897 6807.4410 54802355. -0.034345730 0.17769057 132.69049 10.558352 6809.7744 51381709. -0.038161588 0.18335009 132.73235 10.417082 6812.1078 49926726. -0.042009206 0.18900961 132.77421 10.275812 6814.4412 48591212. -0.045766313 0.19466914 132.81607 10.134543 6816.7746 45620959. -0.049159126 0.20032866 132.85693 9.9932731 6819.1080 45797710. -0.052636351 0.20598818 132.89356 9.8520032 6821.4414 42100093. -0.051669633 0.21164770 132.93163 9.7107333 6823.7748 41451563. -0.059877813 0.21730723 132.97349 9.5694635 6826.1082 42299467. -0.072820364 0.22296675 133.01791 9.4195573