# # 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 = 50.240791 km # Date (UTC) = 2014-12-05T09:36:01.591 # Date (julian) = 2456996.90001842 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6490.9989 1.0971751e+11 0.029054510 0.029568951 -21.664061 54.539453 6493.4080 9.5426452e+10 0.037119452 0.030295397 -21.815310 54.426017 6495.8170 8.2044508e+10 0.044918983 0.031021843 -21.966559 54.312582 6498.2261 7.2561797e+10 0.052079694 0.031748289 -22.101401 54.215557 6500.6351 6.5703125e+10 0.058673727 0.032474735 -22.235861 54.118915 6503.0442 6.0175374e+10 0.064851790 0.033201181 -22.380350 54.015063 6505.4533 5.4650178e+10 0.070809257 0.033927627 -22.531599 53.906351 6507.8623 4.9314061e+10 0.076708098 0.034654073 -22.672729 53.801435 6510.2714 4.4915944e+10 0.083011354 0.035380518 -22.802969 53.700605 6512.6804 4.1324434e+10 0.090153340 0.036106964 -22.933209 53.600201 6515.0895 3.8485390e+10 0.098613383 0.036833410 -23.063449 53.503571 6517.4986 3.5967813e+10 0.10867491 0.037559856 -23.193689 53.406941 6519.9076 3.3379712e+10 0.12027446 0.038286302 -23.332263 53.298190 6522.3167 3.0643548e+10 0.13251863 0.039000180 -23.474060 53.184752 6524.7258 2.7941146e+10 0.14090244 0.039684787 -23.606325 53.081484 6527.1348 2.5553246e+10 0.14920054 0.040814345 -23.732380 52.984842 6529.5439 2.3579865e+10 0.15735124 0.043102127 -23.857484 52.887254 6531.9529 2.1896901e+10 0.16599906 0.046615687 -23.979322 52.786422 6534.3620 2.0325316e+10 0.17111913 0.048045821 -24.101160 52.685591 6536.7711 1.8683765e+10 0.17322561 0.048480385 -24.235874 52.578099 6539.1801 1.7060213e+10 0.17304828 0.049861656 -24.372943 52.469389 6541.5892 1.5546552e+10 0.17091402 0.051135463 -24.498898 52.366428 6543.9982 1.4281152e+10 0.16836678 0.051643886 -24.620736 52.265598 6546.4073 1.3196685e+10 0.16641433 0.052799669 -24.747897 52.160362 6548.8164 1.2128123e+10 0.16456057 0.053911439 -24.884965 52.046925 6551.2254 1.1118709e+10 0.16306157 0.055314878 -25.017496 51.937413 6553.6345 1.0235201e+10 0.16153078 0.055016121 -25.135149 51.840770 6556.0435 9.5154055e+09 0.15949013 0.054006724 -25.252801 51.744128 6558.4526 8.9087947e+09 0.15783959 0.052853629 -25.366853 51.643910 6560.8617 8.3470887e+09 0.15528136 0.051497406 -25.480288 51.543080 6563.2707 7.7746668e+09 0.15317101 0.049615198 -25.600438 51.436279 6565.6798 7.1808990e+09 0.15107833 0.047546488 -25.728054 51.322841 6568.0888 6.6156316e+09 0.14978753 0.045689988 -25.850595 51.213915 6570.4979 6.1337633e+09 0.14851579 0.044711258 -25.964030 51.113083 6572.9070 5.7363391e+09 0.14690784 0.043710757 -26.077465 51.012251 6575.3160 5.4143593e+09 0.14467802 0.042057628 -26.190901 50.911421 6577.7251 5.1018767e+09 0.14203179 0.039081426 -26.304336 50.810591 6580.1342 4.7932070e+09 0.13917086 0.036396775 -26.423420 50.702228 6582.5432 4.4848620e+09 0.13639883 0.035145971 -26.546310 50.588791 6584.9523 4.1955688e+09 0.13359332 0.033996770 -26.662628 50.481420 6587.3613 3.9578853e+09 0.13062111 0.033238428 -26.771876 50.380576 6589.7704 3.7446938e+09 0.12783947 0.031517577 -26.882514 50.278932 6592.1795 3.5177439e+09 0.12500283 0.027899217 -27.005403 50.170222 6594.5885 3.2792551e+09 0.12276135 0.025849454 -27.128292 50.061512 6596.9976 3.0531401e+09 0.12041840 0.025722738 -27.233572 49.960571 6599.4066 2.8598605e+09 0.11912441 0.024954188 -27.338605 49.859739 6601.8157 2.7065911e+09 0.11909317 0.027429840 -27.443637 49.758908 6604.2248 2.5660991e+09 0.11776112 0.026204734 -27.548669 49.658078 6606.6338 2.4284966e+09 0.11713919 0.026365000 -27.655598 49.553336 6609.0429 2.2890145e+09 0.11406987 0.023718671 -27.769036 49.435173 6611.4519 2.1477670e+09 0.11125470 0.024670247 -27.881551 49.318913 6613.8610 2.0224445e+09 0.11017226 0.023889496 -27.986597 49.218068 6616.2701 1.9184314e+09 0.10845349 0.023324686 -28.091644 49.117223 6618.6791 1.8280432e+09 0.10749071 0.024283620 -28.202815 49.007185 6621.0882 1.7369961e+09 0.10633650 0.025060215 -28.316252 48.893748 6623.4973 1.6441668e+09 0.10427523 0.024676050 -28.421944 48.788055 6625.9063 1.5648258e+09 0.10247003 0.026479108 -28.522775 48.687225 6628.3154 1.4884224e+09 0.10013157 0.025831140 -28.625451 48.583443 6630.7244 1.4106968e+09 0.097906444 0.025930087 -28.734161 48.470006 6633.1335 1.3303878e+09 0.095903877 0.026175560 -28.841441 48.358061 6635.5426 1.2560219e+09 0.093667533 0.026481152 -28.938070 48.257231 6637.9516 1.1936535e+09 0.091715581 0.025695338 -29.034700 48.156401 6640.3607 1.1346730e+09 0.091018374 0.025226522 -29.140260 48.046251 6642.7697 1.0734789e+09 0.090465293 0.025183196 -29.248987 47.932796 6645.1788 1.0142224e+09 0.089284464 0.025535446 -29.350181 47.827204 6647.5879 9.6536603e+08 0.088148835 0.026747292 -29.446810 47.726374 6649.9969 9.2384065e+08 0.087403686 0.026259479 -29.545223 47.622485 6652.4060 8.7885064e+08 0.086939732 0.027362224 -29.649207 47.509048 6654.8150 8.3404190e+08 0.085972062 0.027689009 -29.751724 47.396677 6657.2241 7.9205473e+08 0.083999611 0.029161067 -29.844152 47.291645 6659.6332 7.5479705e+08 0.082436541 0.031702519 -29.936580 47.186612 6662.0422 7.1831570e+08 0.080859886 0.033020579 -30.037637 47.075304 6664.4513 6.7790637e+08 0.079746729 0.030554842 -30.141622 46.961866 6666.8603 6.4186793e+08 0.079532112 0.027076245 -30.238323 46.856374 6669.2694 6.0951465e+08 0.078291164 0.028078999 -30.330763 46.755531 6671.6785 5.8272707e+08 0.078141419 0.026875017 -30.424915 46.651526 6674.0875 5.5647991e+08 0.077113736 0.029028630 -30.524172 46.538088 6676.4966 5.2955273e+08 0.074499373 0.032033776 -30.623430 46.424011 6678.9057 5.0165781e+08 0.073396598 0.030330874 -30.722686 46.305848 6681.3147 4.7615781e+08 0.074301930 0.029898803 -30.821726 46.188026 6683.7238 4.4952738e+08 0.074563939 0.032249283 -30.909955 46.087194 6686.1328 4.2820681e+08 0.073668486 0.033838371 -30.998182 45.986364 6688.5419 4.0942546e+08 0.070443952 0.033910279 -31.093462 45.877473 6690.9510 3.8972946e+08 0.068700845 0.033006883 -31.192719 45.764035 6693.3600 3.7253692e+08 0.067456499 0.031480580 -31.289501 45.650598 6695.7691 3.5204496e+08 0.066917442 0.029718203 -31.384032 45.537163 6698.1781 3.3250200e+08 0.066016264 0.030462338 -31.474282 45.427149 6700.5872 3.1495956e+08 0.064186638 0.031103263 -31.558318 45.322103 6702.9963 3.0162641e+08 0.063588584 0.033672252 -31.642649 45.216822 6705.4053 2.9124614e+08 0.063689543 0.037389193 -31.737180 45.103384 6707.8144 2.8079380e+08 0.063311431 0.040070166 -31.831711 44.989947 6710.2234 2.7145354e+08 0.061958598 0.040540232 -31.926242 44.876510 6712.6325 2.6002749e+08 0.059624635 0.043004315 -32.020774 44.763074 6715.0416 2.4850409e+08 0.057376923 0.047421104 -32.111539 44.649637 6717.4506 2.3426899e+08 0.055052286 0.049846395 -32.201342 44.536199 6719.8597 2.1870295e+08 0.053389012 0.050553070 -32.294364 44.419544 6722.2688 2.0657420e+08 0.053199389 0.050272956 -32.388895 44.301381 6724.6778 1.9742712e+08 0.049341611 0.044266487 -32.480754 44.185889 6727.0869 1.8746578e+08 0.046690171 0.040844645 -32.570558 44.072451 6729.4959 1.7893977e+08 0.045812427 0.040714874 -32.655877 43.964680 6731.9050 1.6966858e+08 0.043651237 0.043551134 -32.735703 43.863849 6734.3141 1.6051490e+08 0.042647260 0.049334704 -32.815892 43.761819 6736.7231 1.5528559e+08 0.044319586 0.053088796 -32.900970 43.643655 6739.1322 1.5047016e+08 0.044905559 0.062988313 -32.986048 43.525492 6741.5412 1.4809714e+08 0.042955669 0.067302339 -33.075644 43.411819 6743.9503 1.4404509e+08 0.037720961 0.077458143 -33.165461 43.298364 6746.3594 1.3750178e+08 0.034886721 0.074809294 -33.251306 43.184926 6748.7684 1.2993373e+08 0.032100900 0.071059598 -33.336384 43.071490 6751.1775 1.2294289e+08 0.028650122 0.073786712 -33.421461 42.958053 6753.5865 1.1557475e+08 0.025836351 0.074875455 -33.506539 42.844616 6755.9956 1.1074631e+08 0.023177670 0.074168835 -33.591617 42.728311 6758.4047 1.0586668e+08 0.022666637 0.074561044 -33.676695 42.610147 6760.8137 1.0340616e+08 0.023159883 0.077613012 -33.767741 42.486346 6763.2228 99635578. 0.028603017 0.077116272 -33.864975 42.356703 6765.6318 92182850. 0.030854876 0.079646540 -33.951407 42.237428 6768.0409 87728999. 0.028131611 0.081003232 -34.031757 42.123990 6770.4500 83251373. 0.022995056 0.087971080 -34.114585 42.008076 6772.8590 81396905. 0.018635606 0.093814112 -34.199662 41.889913 6775.2681 77403169. 0.014134668 0.099657144 -34.282810 41.773680 6777.6772 72132787. 0.0094752824 0.10550018 -34.363160 41.660244 6780.0862 67457181. 0.0047183670 0.11134321 -34.443511 41.546808 6782.4953 65757111. 1.6998939e-05 0.11718624 -34.523863 41.433370 6784.9043 64306123. -0.0049101030 0.12302927 -34.606246 41.317064 6787.3134 59647008. -0.010691057 0.12887230 -34.698077 41.187419 6789.7225 56125329. -0.017414769 0.13471534 -34.784629 41.061513 6792.1315 52977621. -0.027225821 0.14055837 -34.860253 40.943350 6794.5406 52642904. -0.061329120 0.14640140 -34.936873 40.826176 6796.9496 52943028. -0.039608448 0.15224443 -35.017237 40.712723 6799.3587 50851885. 0.010274497 0.15808746 -35.098174 40.597739