# # 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 = 39.858173 km # Date (UTC) = 2017-01-07T10:17:32.970 # Date (julian) = 2457760.92885382 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6517.2159 2.9844548e+10 0.14122215 0.037474606 -35.065697 48.984302 6518.8448 3.2659008e+10 0.15081380 0.037965800 -35.145595 48.904404 6520.4737 3.5062365e+10 0.16016046 0.038456994 -35.225493 48.824507 6522.1026 3.4289550e+10 0.16858941 0.038944117 -35.305390 48.744609 6523.7315 3.0501723e+10 0.17209187 0.039360416 -35.385287 48.664712 6525.3604 2.5129366e+10 0.17548321 0.039741081 -35.465185 48.584814 6526.9893 2.1310611e+10 0.17850684 0.040705289 -35.545082 48.504917 6528.6182 1.9758693e+10 0.18003236 0.041932941 -35.613982 48.430686 6530.2472 1.9757224e+10 0.18268812 0.044174718 -35.682160 48.356827 6531.8761 1.9543394e+10 0.18421518 0.046503815 -35.750339 48.282968 6533.5050 1.8404019e+10 0.18437746 0.047734191 -35.822082 48.206583 6535.1339 1.7276820e+10 0.18435013 0.048166211 -35.898783 48.126686 6536.7628 1.5987692e+10 0.18310899 0.048473009 -35.975484 48.046789 6538.3917 1.4996028e+10 0.18202847 0.049347431 -36.051263 47.966888 6540.0206 1.3695888e+10 0.18136174 0.050863852 -36.124780 47.886978 6541.6496 1.2287059e+10 0.17861985 0.051115885 -36.198297 47.807069 6543.2785 1.1129238e+10 0.17643024 0.051454978 -36.270955 47.728588 6544.9074 1.0277458e+10 0.17443830 0.052380430 -36.339134 47.657569 6546.5363 9.7722966e+09 0.17121193 0.052905806 -36.407312 47.586551 6548.1652 9.3437341e+09 0.16879246 0.053716981 -36.475491 47.515532 6549.7941 8.7799194e+09 0.16684675 0.054775547 -36.547081 47.438826 6551.4230 8.2136944e+09 0.16455136 0.055384241 -36.620587 47.358929 6553.0519 7.6164930e+09 0.16284642 0.055308957 -36.694092 47.279031 6554.6809 7.1486746e+09 0.16075924 0.054846668 -36.767598 47.199134 6556.3098 6.7236284e+09 0.15817641 0.053967584 -36.841103 47.119236 6557.9387 6.3165678e+09 0.15622531 0.053277740 -36.914609 47.039339 6559.5676 5.9500525e+09 0.15364312 0.052323116 -36.983904 46.961751 6561.1965 5.5757122e+09 0.15069455 0.051275847 -37.046401 46.887891 6562.8254 5.2838372e+09 0.14836916 0.050094487 -37.108897 46.814030 6564.4543 5.0285521e+09 0.14557753 0.048565694 -37.171394 46.740170 6566.0832 4.7993314e+09 0.14285284 0.047135793 -37.243384 46.661104 6567.7122 4.5612551e+09 0.14102386 0.046015040 -37.316889 46.581207 6569.3411 4.3115928e+09 0.13872997 0.044874623 -37.390395 46.501309 6570.9700 4.0641893e+09 0.13667839 0.044515709 -37.461565 46.421403 6572.5989 3.8072350e+09 0.13477940 0.043887183 -37.531885 46.341494 6574.2278 3.5548850e+09 0.13218632 0.042745589 -37.602206 46.261585 6575.8567 3.3372010e+09 0.12974688 0.041515147 -37.666077 46.187052 6577.4856 3.1497618e+09 0.12727069 0.039457558 -37.725733 46.116033 6579.1145 2.9828891e+09 0.12410068 0.037007526 -37.785388 46.045014 6580.7435 2.8249098e+09 0.12144608 0.035833688 -37.845945 45.972974 6582.3724 2.6762969e+09 0.11915499 0.035192462 -37.916255 45.889882 6584.0013 2.5503470e+09 0.11661150 0.034514810 -37.986565 45.806789 6585.6302 2.4207921e+09 0.11477338 0.033466943 -38.056875 45.723696 6587.2591 2.2770564e+09 0.11339214 0.033215779 -38.124131 45.643657 6588.8880 2.1192690e+09 0.11185986 0.033083372 -38.191244 45.563759 6590.5169 1.9709349e+09 0.11020890 0.030100482 -38.258358 45.483862 6592.1459 1.8514504e+09 0.10840635 0.027931861 -38.319307 45.411303 6593.7748 1.7527160e+09 0.10647010 0.026381926 -38.378963 45.340284 6595.4037 1.6736793e+09 0.10434193 0.025665434 -38.438618 45.269265 6597.0326 1.5943874e+09 0.10229325 0.025712443 -38.500558 45.194548 6598.6615 1.5168648e+09 0.10060594 0.025091341 -38.567672 45.111453 6600.2904 1.4355492e+09 0.10030138 0.025586915 -38.634785 45.028359 6601.9193 1.3459748e+09 0.099755605 0.027478641 -38.701901 44.945830 6603.5482 1.2601103e+09 0.098539836 0.026338716 -38.769026 44.865920 6605.1772 1.1808486e+09 0.098119442 0.026813661 -38.836151 44.786011 6606.8061 1.1169294e+09 0.097000329 0.026055487 -38.902772 44.706535 6608.4350 1.0640726e+09 0.094637248 0.023720871 -38.959587 44.635517 6610.0639 1.0201124e+09 0.092221302 0.024064026 -39.016401 44.564498 6611.6928 9.8531647e+08 0.089893919 0.024516651 -39.073215 44.493479 6613.3217 9.5563633e+08 0.088842198 0.023691630 -39.133784 44.416078 6614.9506 9.1466754e+08 0.087664827 0.023285545 -39.197702 44.332985 6616.5795 8.7048690e+08 0.086195876 0.023373258 -39.261621 44.249893 6618.2085 8.1671469e+08 0.085666634 0.023928206 -39.325539 44.168077 6619.8374 7.7509466e+08 0.085105954 0.024727958 -39.389457 44.088179 6621.4663 7.4316741e+08 0.084269465 0.024934895 -39.453375 44.008282 6623.0952 7.1278061e+08 0.083285584 0.024527094 -39.517293 43.928385 6624.7241 6.8514537e+08 0.082350433 0.025249921 -39.581211 43.848487 6626.3530 6.4510814e+08 0.081433325 0.026141122 -39.645130 43.768589 6627.9819 6.1218954e+08 0.080564679 0.025696116 -39.707640 43.689546 6629.6108 5.8172557e+08 0.079788670 0.025998662 -39.761614 43.615686 6631.2398 5.6270242e+08 0.078536737 0.025955121 -39.815588 43.541826 6632.8687 5.5273634e+08 0.077649537 0.026136506 -39.869562 43.467966 6634.4976 5.3165189e+08 0.076620310 0.026363139 -39.927729 43.390355 6636.1265 5.1435229e+08 0.075513398 0.026500628 -39.988452 43.310458 6637.7554 4.9080577e+08 0.074927080 0.025791434 -40.049175 43.230560 6639.3843 4.6881714e+08 0.074508294 0.025490709 -40.109901 43.150657 6641.0132 4.4850945e+08 0.075104738 0.025148345 -40.170632 43.070747 6642.6422 4.2112907e+08 0.075036088 0.025177974 -40.231363 42.990837 6644.2711 3.9967772e+08 0.074299568 0.025372902 -40.292091 42.910932 6645.9000 3.8717079e+08 0.073563187 0.025873290 -40.352812 42.831035 6647.5289 3.7608946e+08 0.072825147 0.026716242 -40.413534 42.751137 6649.1578 3.5783237e+08 0.071975404 0.027416166 -40.472671 42.672658 6650.7867 3.3365091e+08 0.071914828 0.026435338 -40.526646 42.598799 6652.4156 3.1589234e+08 0.071675438 0.027364877 -40.580621 42.524940 6654.0445 3.0916469e+08 0.071049111 0.028017251 -40.634596 42.451081 6655.6735 3.0673649e+08 0.069765878 0.027888488 -40.691109 42.372907 6657.3024 2.9617656e+08 0.068651505 0.029251846 -40.748635 42.293010 6658.9313 2.7537677e+08 0.067729952 0.031712720 -40.806161 42.213112 6660.5602 2.5883461e+08 0.067139838 0.032135185 -40.863687 42.133215 6662.1891 2.4672242e+08 0.066339293 0.032938172 -40.921212 42.053317 6663.8180 2.3868212e+08 0.065495039 0.032256520 -40.978737 41.973419 6665.4469 2.3101628e+08 0.065749970 0.027814819 -41.036263 41.892062 6667.0758 2.1801532e+08 0.065637980 0.027131316 -41.093789 41.808968 6668.7048 2.1376260e+08 0.064833325 0.028094433 -41.151315 41.725874 6670.3337 2.0395032e+08 0.065024091 0.027174049 -41.208842 41.643827 6671.9626 1.8900834e+08 0.065068755 0.026879066 -41.266368 41.563930 6673.5915 1.7204912e+08 0.064860771 0.028343841 -41.323894 41.484033 6675.2204 1.5696167e+08 0.063792662 0.030220519 -41.380152 41.405896 6676.8493 1.5680742e+08 0.062196309 0.032261106 -41.431293 41.334868 6678.4782 1.5411109e+08 0.061860899 0.030616751 -41.482433 41.263840 6680.1071 1.5001380e+08 0.062445796 0.029464554 -41.533573 41.192812 6681.7361 1.4473633e+08 0.063148600 0.030222051 -41.586879 41.113594 6683.3650 1.3948105e+08 0.063637911 0.031723452 -41.641210 41.030502 6684.9939 1.3491054e+08 0.063672484 0.032704527 -41.695541 40.947409 6686.6228 1.3165487e+08 0.062648095 0.034123438 -41.749871 40.866073 6688.2517 1.2276861e+08 0.060923179 0.033843294 -41.804201 40.786175 6689.8806 1.1521161e+08 0.059728281 0.033223322 -41.858531 40.706277 6691.5095 1.1149020e+08 0.059111284 0.032881046 -41.912862 40.626379 6693.1384 1.0786371e+08 0.058755129 0.031556592 -41.967192 40.546482 6694.7674 1.0979796e+08 0.058437109 0.030185528 -42.021523 40.466585 6696.3963 1.1038675e+08 0.058359087 0.029840430 -42.075854 40.385755 6698.0252 1.0978588e+08 0.057939940 0.030252391 -42.130183 40.302662 6699.6541 1.0264518e+08 0.057019505 0.030986884 -42.184513 40.219570 6701.2830 97910496. 0.055858349 0.031824708 -42.238843 40.136997 6702.9119 88090360. 0.056132997 0.033604908 -42.293174 40.057100 6704.5408 84594412. 0.056498477 0.036443134 -42.347504 39.977202 6706.1698 84108525. 0.056593468 0.038741845 -42.401835 39.897305 6707.7987 81497090. 0.056590421 0.040072418 -42.456165 39.817407 6709.4276 82318300. 0.056012391 0.040860583 -42.510495 39.737509 6711.0565 80524737. 0.054849118 0.040756504 -42.564825 39.657612 6712.6854 79444623. 0.053533297 0.043102525 -42.616264 39.577714 6714.3143 69901823. 0.052305201 0.047327039 -42.667398 39.497817 6715.9432 65232463. 0.051365697 0.048343296 -42.718532 39.417919 6717.5721 63727103. 0.050031598 0.049838879 -42.769672 39.335533 6719.2011 65124314. 0.048541074 0.051178821 -42.820814 39.252426 6720.8300 62768517. 0.049307330 0.050323600 -42.871956 39.169320 6722.4589 58055547. 0.049338890 0.050037908 -42.925162 39.088291 6724.0878 53727646. 0.048233155 0.049193524 -42.979493 39.008393 6725.7167 52964473. 0.045634263 0.041128327 -43.033823 38.928496 6727.3456 51661377. 0.048368823 0.040499922 -43.086498 38.848599 6728.9745 48153455. 0.045537924 0.041009332 -43.137632 38.768701 6730.6034 49014450. 0.037543266 0.041206300 -43.188766 38.688804