# # 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 = 49.382233 km # Date (UTC) = 2015-01-26T09:38:04.431 # Date (julian) = 2457048.90144017 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6494.9729 8.9108365e+10 0.024412066 0.030767305 -17.306348 59.285442 6496.9611 8.0071958e+10 0.031435542 0.031366839 -17.498797 59.155409 6498.9493 7.1803560e+10 0.038588647 0.031966372 -17.699835 59.018449 6500.9375 6.4758459e+10 0.046033289 0.032565906 -17.924541 58.862404 6502.9257 5.8649381e+10 0.053830035 0.033165440 -18.124343 58.720198 6504.9139 5.3004295e+10 0.061981597 0.033764973 -18.311554 58.584989 6506.9021 4.8098902e+10 0.070614990 0.034364507 -18.498791 58.453616 6508.8903 4.4040631e+10 0.079879721 0.034964041 -18.686038 58.323584 6510.8784 4.0386516e+10 0.089710230 0.035563574 -18.869027 58.193551 6512.8666 3.6990538e+10 0.10005207 0.036163108 -19.051073 58.063518 6514.8548 3.3824019e+10 0.11090017 0.036762641 -19.260158 57.910177 6516.8430 3.0890049e+10 0.12224092 0.037362175 -19.460453 57.760249 6518.8312 2.8272956e+10 0.13408421 0.037961709 -19.632097 57.625015 6520.8194 2.5953075e+10 0.14636555 0.038561242 -19.805659 57.491722 6522.8076 2.3956383e+10 0.15678542 0.039128727 -19.982468 57.361715 6524.7958 2.2195661e+10 0.16453919 0.039709663 -20.154629 57.229364 6526.7840 2.0530214e+10 0.17036998 0.040489983 -20.321071 57.094129 6528.7722 1.8977061e+10 0.17477035 0.042055036 -20.487513 56.958895 6530.7603 1.7556983e+10 0.17834578 0.044893169 -20.653955 56.823661 6532.7485 1.6252149e+10 0.18145132 0.047309517 -20.820398 56.691564 6534.7367 1.5080509e+10 0.18187530 0.048150649 -20.986841 56.561531 6536.7249 1.3996250e+10 0.18061720 0.048439105 -21.149743 56.427958 6538.7131 1.2906345e+10 0.17935918 0.049503928 -21.310983 56.292723 6540.7013 1.1863596e+10 0.17790190 0.051185415 -21.496640 56.137011 6542.6895 1.0869388e+10 0.17583173 0.051264007 -21.684271 55.978965 6544.6777 9.9717802e+09 0.17403139 0.052194096 -21.840310 55.843732 6546.6659 9.1500762e+09 0.17190487 0.053012432 -21.996349 55.708498 6548.6541 8.4671861e+09 0.16993208 0.053862972 -22.152389 55.573263 6550.6423 7.9427542e+09 0.16833087 0.055146174 -22.300126 55.444025 6552.6304 7.4763244e+09 0.16680745 0.055428084 -22.429412 55.328114 6554.6186 7.0684007e+09 0.16463219 0.054845362 -22.560148 55.210902 6556.6068 6.6906054e+09 0.16223992 0.053923911 -22.710987 55.075667 6558.5950 6.3363908e+09 0.15969085 0.052732277 -22.861073 54.940432 6560.5832 5.9816135e+09 0.15693674 0.051748473 -23.006710 54.805199 6562.5714 5.6408019e+09 0.15428040 0.050336197 -23.152347 54.669965 6564.5596 5.3346162e+09 0.15141014 0.048517992 -23.297983 54.534729 6566.5478 5.0627868e+09 0.14880397 0.046873007 -23.443611 54.399502 6568.5360 4.8195796e+09 0.14645736 0.045278978 -23.589219 54.264296 6570.5242 4.5906828e+09 0.14439921 0.044700384 -23.732880 54.127121 6572.5124 4.3785747e+09 0.14207062 0.043936745 -23.873316 53.986685 6574.5005 4.1768373e+09 0.13935768 0.042614596 -24.011390 53.848611 6576.4887 3.9864922e+09 0.13682477 0.040808852 -24.146624 53.713377 6578.4769 3.8101968e+09 0.13426235 0.037896497 -24.284621 53.578142 6580.4651 3.6466192e+09 0.13212420 0.036090921 -24.425057 53.442907 6582.4533 3.4988263e+09 0.13038173 0.035170438 -24.550563 53.316722 6584.4415 3.3533456e+09 0.12857103 0.034275012 -24.666475 53.196352 6586.4297 3.2217122e+09 0.12676621 0.033165742 -24.787551 53.070546 6588.4179 3.0973884e+09 0.12527081 0.033240380 -24.917584 52.935312 6590.4061 2.9829592e+09 0.12313630 0.030306719 -25.049922 52.800078 6592.3943 2.9113394e+09 0.12066207 0.027690582 -25.185156 52.664843 6594.3824 2.8529188e+09 0.11796921 0.025962578 -25.305692 52.537346 6596.3706 2.6727637e+09 0.11540623 0.025725589 -25.412687 52.416978 6598.3588 2.4220864e+09 0.11395944 0.025235847 -25.526066 52.292492 6600.3470 2.1011970e+09 0.11434103 0.025703285 -25.656074 52.157283 6602.3352 1.8370501e+09 0.11445079 0.027230578 -25.784246 52.020222 6604.3234 1.6584972e+09 0.11358222 0.026263302 -25.909078 51.879786 6606.3116 1.5919316e+09 0.11259698 0.026944042 -26.033909 51.741597 6608.2998 1.5956407e+09 0.10933707 0.023724445 -26.158741 51.606364 6610.2880 1.4927352e+09 0.10652536 0.024278131 -26.272219 51.478700 6612.2762 1.4553897e+09 0.10397149 0.024114412 -26.374757 51.358330 6614.2644 1.3381442e+09 0.10290805 0.023758362 -26.483229 51.234002 6616.2525 1.2095268e+09 0.10162096 0.023321936 -26.608061 51.098767 6618.2407 1.0775642e+09 0.10153692 0.023952581 -26.731105 50.961746 6620.2289 1.0054705e+09 0.10100052 0.024840969 -26.850735 50.821312 6622.2171 1.0231545e+09 0.099048407 0.024700203 -26.961292 50.689325 6624.2053 1.0241293e+09 0.096841707 0.024972210 -27.059371 50.568955 6626.1935 1.0073962e+09 0.095584562 0.026344368 -27.160359 50.445940 6628.1817 9.8669146e+08 0.094058741 0.025776863 -27.274789 50.310704 6630.1699 9.5483682e+08 0.092776494 0.025928720 -27.385039 50.179270 6632.1581 8.5565935e+08 0.091861599 0.026051299 -27.483101 50.058921 6634.1463 7.3019052e+08 0.091677293 0.026337512 -27.581357 49.938333 6636.1345 6.7233420e+08 0.090814809 0.026497539 -27.695786 49.797897 6638.1226 6.9713088e+08 0.089227567 0.025666299 -27.809750 49.657926 6640.1108 7.1674832e+08 0.088519098 0.025257091 -27.918979 49.522692 6642.0990 7.6927846e+08 0.087499166 0.025155748 -28.025606 49.389935 6644.0872 7.8404824e+08 0.085929584 0.025353032 -28.119227 49.269565 6646.0754 7.2840243e+08 0.085120782 0.025959180 -28.212847 49.149195 6648.0636 6.5352027e+08 0.084547053 0.027006856 -28.320883 49.010292 6650.0518 5.7566319e+08 0.084327415 0.026267092 -28.430045 48.869960 6652.0400 4.8034114e+08 0.084767162 0.027261520 -28.523716 48.753971 6654.0282 4.3340614e+08 0.084578747 0.028024226 -28.617336 48.638060 6656.0164 4.5213267e+08 0.082229628 0.028037776 -28.718844 48.503561 6658.0045 4.8334241e+08 0.080107630 0.030069148 -28.822870 48.363125 6659.9927 4.8515860e+08 0.078404563 0.031627512 -28.914481 48.239451 6661.9809 4.9625081e+08 0.076553000 0.033034559 -29.003644 48.119081 6663.9691 5.1040258e+08 0.074895532 0.032214645 -29.101610 47.986827 6665.9573 5.0547544e+08 0.074879376 0.026978540 -29.205637 47.846390 6667.9455 4.8886312e+08 0.074263244 0.027450757 -29.296724 47.719391 6669.9337 4.7889780e+08 0.073657729 0.027396734 -29.381429 47.599021 6671.9219 4.6384149e+08 0.073465144 0.026878486 -29.472149 47.472322 6673.9101 4.1986092e+08 0.073093612 0.028820302 -29.570954 47.337116 6675.8983 3.6313626e+08 0.071613784 0.031518866 -29.664903 47.209382 6677.8865 2.9782460e+08 0.071543971 0.031098028 -29.754066 47.089012 6679.8746 2.5966063e+08 0.072314361 0.029545002 -29.844390 46.963414 6681.8628 2.3084738e+08 0.073665053 0.030319314 -29.938014 46.822978 6683.8510 2.3383161e+08 0.073697467 0.032435772 -30.028624 46.689323 6685.8392 2.5253354e+08 0.072672964 0.033591260 -30.113330 46.568952 6687.8274 2.7383770e+08 0.069932570 0.033881446 -30.198881 46.447172 6689.8156 2.8177843e+08 0.067647579 0.033281853 -30.292505 46.311939 6691.8038 2.7242646e+08 0.066636424 0.032811621 -30.383824 46.179266 6693.7920 2.6560663e+08 0.065665356 0.031332390 -30.464070 46.058896 6695.7802 2.6543742e+08 0.065264731 0.029716165 -30.544316 45.938526 6697.7684 2.5884543e+08 0.064431461 0.030188503 -30.636992 45.799511 6699.7566 2.3584110e+08 0.063121456 0.030892350 -30.730616 45.659076 6701.7447 2.1597161e+08 0.061540670 0.032502198 -30.824239 45.518640 6703.7329 1.9489523e+08 0.061830311 0.035509272 -30.916365 45.379890 6705.7211 1.7835345e+08 0.061919548 0.037950622 -30.992154 45.259520 6707.7093 1.6404484e+08 0.061627816 0.040085218 -31.067942 45.139150 6709.6975 1.6448988e+08 0.060508026 0.040688895 -31.158713 45.001929 6711.6857 1.7040793e+08 0.058383121 0.041472369 -31.252319 44.861520 6713.6739 1.7141448e+08 0.056299438 0.046123933 -31.329570 44.743599 6715.6621 1.6694151e+08 0.054590777 0.048055744 -31.405358 44.627688 6717.6503 1.6231035e+08 0.052594715 0.049834046 -31.486162 44.495227 6719.6385 1.5903253e+08 0.050993239 0.050763255 -31.569383 44.354791 6721.6267 1.5362472e+08 0.051130106 0.050492712 -31.647013 44.229450 6723.6148 1.4430466e+08 0.049496749 0.049711852 -31.722801 44.109080 6725.6030 1.3801542e+08 0.045508650 0.041199334 -31.805023 43.978493 6727.5912 1.3578268e+08 0.044353927 0.040172708 -31.893445 43.838057 6729.5794 1.3186101e+08 0.043404408 0.040659233 -31.971841 43.709392 6731.5676 1.2915909e+08 0.041646675 0.042879662 -32.043171 43.589022 6733.5558 1.2553335e+08 0.040507054 0.046941880 -32.118586 43.463546 6735.5440 1.1983027e+08 0.041298685 0.049870913 -32.201808 43.328312 6737.5322 1.1204145e+08 0.042484290 0.055830826 -32.280024 43.199334 6739.5204 1.0563514e+08 0.042532144 0.063463382 -32.351354 43.078964 6741.5086 1.0066550e+08 0.040788363 0.067209127 -32.424799 42.955026 6743.4967 94384395. 0.036641194 0.074398491 -32.508020 42.814590 6745.4849 90306654. 0.034372161 0.078770751 -32.589913 42.674155 6747.4731 85110307. 0.029681519 0.067198281 -32.667934 42.533719 6749.4613 80642797. 0.028137726 0.072151623 -32.743729 42.399958 6751.4495 73719547. 0.024603204 0.073901727 -32.815059 42.279588 6753.4377 70200814. 0.021576990 0.074393772 -32.886987 42.157889 6755.4259 66197018. 0.016918987 0.074418619 -32.964990 42.022682 6757.4141 61638079. -0.00067413119 0.075483425 -33.041140 41.889946 6759.4023 57631899. 0.011352300 0.075917030 -33.108012 41.769577 6761.3905 53474853. 0.032963595 0.078000485 -33.174885 41.649207 6763.3787 51989050. 0.052074804 0.077590966 -33.252053 41.510306