# # 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 = 34.557464 km # Date (UTC) = 2016-12-19T10:08:28.957 # Date (julian) = 2457741.92255737 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6519.0932 4.2464015e+10 0.14900472 0.038040724 -32.983471 49.278027 6520.8548 3.8609888e+10 0.15788556 0.038571922 -33.066418 49.204297 6522.6164 3.5230977e+10 0.16514697 0.039078658 -33.149365 49.130567 6524.3780 3.2096432e+10 0.16933926 0.039561231 -33.226215 49.056836 6526.1395 2.9045854e+10 0.17184453 0.039814369 -33.303018 48.983104 6527.9011 2.6359317e+10 0.17559203 0.041370684 -33.379821 48.909373 6529.6627 2.4227976e+10 0.17806667 0.043291373 -33.458895 48.835636 6531.4243 2.1883906e+10 0.17922977 0.045846183 -33.538780 48.761896 6533.1858 1.9837420e+10 0.18072189 0.047598557 -33.618665 48.688157 6534.9474 1.7923546e+10 0.18113774 0.048209582 -33.693356 48.617980 6536.7090 1.6565117e+10 0.18007451 0.048424838 -33.762477 48.551623 6538.4705 1.5491568e+10 0.17956562 0.049385812 -33.831598 48.485266 6540.2321 1.4259543e+10 0.17912499 0.050963762 -33.900720 48.418909 6541.9937 1.3151605e+10 0.17699346 0.051004283 -33.976491 48.346168 6543.7553 1.1893599e+10 0.17492391 0.051580117 -34.053294 48.272437 6545.5168 1.0710783e+10 0.17319681 0.052460197 -34.130097 48.198705 6547.2784 9.6349730e+09 0.17147001 0.053393241 -34.205030 48.124969 6549.0400 8.8128432e+09 0.16866376 0.054007032 -34.278770 48.051230 6550.8016 8.3425699e+09 0.16635260 0.055186064 -34.352511 47.977490 6552.5631 7.8612469e+09 0.16431982 0.055445025 -34.427342 47.902660 6554.3247 7.4324900e+09 0.16145584 0.054839194 -34.504145 47.825857 6556.0863 6.9596076e+09 0.15872437 0.054000440 -34.580947 47.749055 6557.8479 6.4782797e+09 0.15683871 0.053334668 -34.657440 47.672562 6559.6094 5.9993407e+09 0.15428853 0.052318394 -34.731170 47.598831 6561.3710 5.5686303e+09 0.15136629 0.051189858 -34.804900 47.525100 6563.1326 5.1875430e+09 0.14887726 0.049775004 -34.878629 47.451369 6564.8942 4.8372533e+09 0.14652673 0.048366367 -34.949761 47.377639 6566.6557 4.5380748e+09 0.14391632 0.046811942 -35.020420 47.303909 6568.4173 4.2186937e+09 0.14180382 0.045388065 -35.091078 47.230179 6570.1789 3.8719348e+09 0.14026423 0.044843414 -35.163557 47.156442 6571.9404 3.5598234e+09 0.13830520 0.044246421 -35.237298 47.082702 6573.7020 3.2941137e+09 0.13573056 0.043094127 -35.311039 47.008961 6575.4636 3.0740654e+09 0.13339578 0.041909577 -35.383744 46.935224 6577.2252 2.8899502e+09 0.13066862 0.039866688 -35.454402 46.861494 6578.9867 2.7530659e+09 0.12715027 0.037091434 -35.525060 46.787764 6580.7483 2.6234485e+09 0.12425318 0.035829202 -35.595719 46.714034 6582.5099 2.4578624e+09 0.12175451 0.035155040 -35.666377 46.640303 6584.2715 2.3052787e+09 0.11886380 0.034367635 -35.737035 46.566572 6586.0330 2.1604021e+09 0.11598183 0.033170869 -35.807693 46.492841 6587.7946 2.0283912e+09 0.11378561 0.033334425 -35.878352 46.416573 6589.5562 1.9068936e+09 0.11115518 0.031942559 -35.949010 46.339771 6591.3178 1.7895490e+09 0.10838076 0.028843358 -36.019669 46.262968 6593.0793 1.6867928e+09 0.10626462 0.027028467 -36.084720 46.192123 6594.8409 1.5891786e+09 0.10411362 0.025710907 -36.145554 46.125759 6596.6025 1.4998049e+09 0.10178469 0.025724535 -36.206389 46.059395 6598.3641 1.4203236e+09 0.10015323 0.025233354 -36.267223 45.993031 6600.1256 1.3474412e+09 0.099648467 0.025248139 -36.334502 45.919637 6601.8872 1.2818436e+09 0.099000831 0.027463511 -36.402088 45.845905 6603.6488 1.2363280e+09 0.097450005 0.026279202 -36.469675 45.772174 6605.4103 1.1690093e+09 0.096950638 0.027009292 -36.537261 45.698443 6607.1719 1.0795311e+09 0.095761793 0.025367516 -36.604847 45.624712 6608.9335 9.8960062e+08 0.093290123 0.023707690 -36.672432 45.550981 6610.6951 9.1510210e+08 0.090969249 0.024667101 -36.738653 45.475886 6612.4566 8.5153019e+08 0.089720008 0.023979566 -36.803167 45.399083 6614.2182 8.0633282e+08 0.088685024 0.023790150 -36.867681 45.322281 6615.9798 7.9457740e+08 0.086918323 0.023281677 -36.932778 45.246057 6617.7414 7.7932280e+08 0.086037138 0.023685046 -37.000373 45.172317 6619.5029 7.4844793e+08 0.085163351 0.024647265 -37.067969 45.098578 6621.2645 7.1080041e+08 0.084161936 0.025001773 -37.135565 45.024838 6623.0261 6.7582181e+08 0.082749372 0.024501490 -37.200281 44.951107 6624.7877 6.3953539e+08 0.081331277 0.025283939 -37.264795 44.877375 6626.5492 6.0817546e+08 0.079679385 0.025891132 -37.329309 44.803644 6628.3108 5.7940084e+08 0.078489913 0.025829285 -37.393824 44.729914 6630.0724 5.4944005e+08 0.077418756 0.025928480 -37.458339 44.656184 6631.8340 5.2177642e+08 0.076073616 0.026015478 -37.522854 44.582455 6633.5955 4.9424004e+08 0.075186480 0.026256226 -37.587368 44.507421 6635.3571 4.7210087e+08 0.074322197 0.026453340 -37.651882 44.430619 6637.1187 4.5009695e+08 0.073435689 0.026103289 -37.716396 44.353816 6638.8802 4.2783799e+08 0.072803166 0.025633292 -37.781691 44.275972 6640.6418 4.0782711e+08 0.073603941 0.025192124 -37.850825 44.193011 6642.4034 3.8837485e+08 0.073700460 0.025168204 -37.919960 44.110049 6644.1650 3.6898851e+08 0.073000506 0.025361436 -37.986970 44.029637 6645.9265 3.4936712e+08 0.072408993 0.025885735 -38.048411 43.955907 6647.6881 3.2911745e+08 0.071840944 0.026800076 -38.109852 43.882177 6649.4497 3.1245084e+08 0.071170778 0.027013813 -38.171293 43.808448 6651.2113 2.9583648e+08 0.070997326 0.026646068 -38.232735 43.734717 6652.9728 2.7963546e+08 0.070917007 0.027518188 -38.294177 43.660986 6654.7344 2.6801818e+08 0.070076006 0.027723360 -38.355620 43.587255 6656.4960 2.5719649e+08 0.068606968 0.028458740 -38.417062 43.511171 6658.2576 2.4756294e+08 0.067571359 0.030517863 -38.478504 43.434369 6660.0191 2.3288826e+08 0.066638736 0.031643387 -38.539947 43.357566 6661.7807 2.1779195e+08 0.065542381 0.032932580 -38.601393 43.282328 6663.5423 2.0678439e+08 0.064637075 0.032332934 -38.662844 43.208588 6665.3039 1.9344992e+08 0.064645021 0.028049257 -38.724295 43.134848 6667.0654 1.8605643e+08 0.064403986 0.027127490 -38.784956 43.061110 6668.8270 1.7781098e+08 0.063541562 0.028202610 -38.843325 42.987379 6670.5886 1.7185293e+08 0.063805074 0.027055956 -38.901695 42.913649 6672.3501 1.6349574e+08 0.063802267 0.027082551 -38.960064 42.839909 6674.1117 1.5494470e+08 0.063293494 0.029049035 -39.018435 42.763112 6675.8733 1.4624917e+08 0.061695286 0.031471037 -39.076806 42.686309 6677.6349 1.3716343e+08 0.060937532 0.031455686 -39.135176 42.609507 6679.3964 1.3070682e+08 0.060895636 0.029940169 -39.198990 42.528119 6681.1580 1.1980967e+08 0.061998107 0.029778586 -39.264657 42.445170 6682.9196 1.1183299e+08 0.062757122 0.031127145 -39.330324 42.362221 6684.6812 1.0238255e+08 0.062902161 0.032688658 -39.389769 42.287133 6686.4427 97297887. 0.062136871 0.034018675 -39.448139 42.213403 6688.2043 90632565. 0.060277243 0.033832352 -39.506508 42.139673 6689.9659 84759772. 0.058976368 0.033146573 -39.564883 42.065936 6691.7275 77898252. 0.058318113 0.032829631 -39.623262 41.992195 6693.4890 68911022. 0.057881894 0.031436321 -39.681640 41.918455 6695.2506 61638381. 0.057868576 0.029813441 -39.741333 41.840372 6697.0122 58130546. 0.057577031 0.030092807 -39.803544 41.753967 6698.7738 55863919. 0.056726262 0.031279882 -39.865755 41.667563 6700.5353 53784207. 0.055494572 0.031064785 -39.924859 41.586856 6702.2969 52192349. 0.054667975 0.033113806 -39.980157 41.513126 6704.0585 49159849. 0.055097783 0.036206267 -40.035455 41.439397 6705.8200 44605746. 0.055356704 0.038126485 -40.090752 41.365667 6707.5816 38431234. 0.055340909 0.040103510 -40.146049 41.291935 6709.3432 36115281. 0.054872974 0.040914255 -40.201347 41.218204 6711.1048 35204601. 0.053613503 0.040811431 -40.256644 41.144473 6712.8663 35798310. 0.052194506 0.043438467 -40.318435 41.058837 6714.6279 39453293. 0.050592814 0.047350615 -40.380646 40.972433 6716.3895 40770633. 0.049216825 0.048975042 -40.442540 40.886611 6718.1511 41735281. 0.047622400 0.050047684 -40.497846 40.812871 6719.9126 41680301. 0.046796146 0.050502767 -40.553151 40.739131 6721.6742 39174862. 0.046981190 0.050507042 -40.608456 40.665392 6723.4358 38202448. 0.045534231 0.049611988 -40.666492 40.584365 6725.1974 38566884. 0.041468990 0.041452740 -40.725247 40.501416 6726.9589 40408143. 0.039157855 0.040960016 -40.784003 40.418468 6728.7205 40241920. 0.033175301 0.040649292 -40.839654 40.343796 6730.4821 42240743. 0.036250381 0.041039892 -40.894952 40.270065 6732.2437 44115592. 0.041576780 0.043785065 -40.950250 40.196334 6734.0052 41974867. 0.044595320 0.049353285 -41.007769 40.114456