# # 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 = 42.007606 km # Date (UTC) = 2015-12-28T10:05:57.342 # Date (julian) = 2457384.92080257 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6486.9849 1.7669740e+11 0.018803586 0.028358541 -30.811548 49.965291 6489.0935 1.2869771e+11 0.027102914 0.028994388 -30.910836 49.877036 6491.2021 1.0158595e+11 0.034474352 0.029630234 -31.010124 49.788779 6493.3107 8.6456155e+10 0.040777065 0.030266080 -31.109412 49.700523 6495.4194 7.6077184e+10 0.046397675 0.030901927 -31.208699 49.611945 6497.5280 6.7431869e+10 0.051578968 0.031537773 -31.307987 49.520011 6499.6366 6.0577248e+10 0.056219228 0.032173619 -31.407274 49.428078 6501.7452 5.5252378e+10 0.060339017 0.032809465 -31.505212 49.337495 6503.8538 5.0384014e+10 0.064087061 0.033445312 -31.600835 49.249228 6505.9624 4.6081987e+10 0.067788949 0.034081158 -31.696459 49.160962 6508.0710 4.2045591e+10 0.071953689 0.034717004 -31.792074 49.072702 6510.1796 3.8150364e+10 0.077071203 0.035352850 -31.887684 48.984445 6512.2882 3.4719065e+10 0.083840765 0.035988697 -31.983294 48.896189 6514.3969 3.1601201e+10 0.092740146 0.036624543 -32.078905 48.807934 6516.5055 2.8939597e+10 0.10429472 0.037260389 -32.174516 48.719679 6518.6141 2.6733897e+10 0.11875252 0.037896236 -32.269352 48.630649 6520.7227 2.4765431e+10 0.13570212 0.038532082 -32.361285 48.538716 6522.8313 2.2903202e+10 0.15202095 0.039134937 -32.453218 48.446783 6524.9399 2.1113969e+10 0.16443368 0.039760869 -32.545157 48.356650 6527.0485 1.9390413e+10 0.17235786 0.040751700 -32.637102 48.268382 6529.1571 1.7842322e+10 0.17586760 0.042486092 -32.729047 48.180114 6531.2658 1.6488268e+10 0.17737825 0.045615481 -32.818145 48.089016 6533.3744 1.5288093e+10 0.17875098 0.047678679 -32.906401 47.997083 6535.4830 1.4156400e+10 0.17796982 0.048014785 -32.994852 47.905344 6537.5916 1.3117233e+10 0.17759435 0.048964132 -33.086785 47.817087 6539.7002 1.2143438e+10 0.17680055 0.050491198 -33.178718 47.728831 6541.8088 1.1248872e+10 0.17467708 0.051064239 -33.269425 47.640575 6543.9174 1.0494453e+10 0.17262503 0.051622674 -33.357680 47.552320 6546.0260 9.7611535e+09 0.17064908 0.052485946 -33.445935 47.464065 6548.1346 9.0394637e+09 0.16966932 0.053707855 -33.540974 47.366485 6550.2433 8.3197775e+09 0.16836662 0.055046269 -33.640279 47.263043 6552.3519 7.5956519e+09 0.16683274 0.055498202 -33.736680 47.162596 6554.4605 6.9704532e+09 0.16476061 0.054842043 -33.821258 47.074340 6556.5691 6.4258384e+09 0.16260444 0.053929459 -33.905837 46.986083 6558.6777 5.9453258e+09 0.16008346 0.052661819 -33.990415 46.896070 6560.7863 5.5336868e+09 0.15706281 0.051565346 -34.074993 46.804137 6562.8949 5.1573333e+09 0.15420128 0.050028349 -34.159571 46.712204 6565.0035 4.8313069e+09 0.15116485 0.048314380 -34.244150 46.623060 6567.1121 4.5401785e+09 0.14791563 0.046522362 -34.328728 46.534805 6569.2208 4.2450405e+09 0.14458768 0.044866793 -34.413307 46.446406 6571.3294 3.9587057e+09 0.14178829 0.044413317 -34.497896 46.354461 6573.4380 3.6922242e+09 0.13884155 0.043306009 -34.582486 46.262516 6575.5466 3.4506696e+09 0.13623425 0.041826300 -34.665895 46.171751 6577.6552 3.2448439e+09 0.13382824 0.039191199 -34.746797 46.083495 6579.7638 3.0590355e+09 0.13131712 0.036650592 -34.827698 45.995238 6581.8724 2.8708692e+09 0.12906866 0.035332425 -34.908600 45.904773 6583.9810 2.6956193e+09 0.12681808 0.034525106 -34.989501 45.812840 6586.0897 2.5339651e+09 0.12474971 0.033170137 -35.070403 45.720907 6588.1983 2.3869068e+09 0.12312216 0.033313719 -35.151303 45.632216 6590.3069 2.2550056e+09 0.12072907 0.030491225 -35.232204 45.543960 6592.4155 2.1286820e+09 0.11813411 0.027669959 -35.313106 45.455108 6594.5241 2.0066958e+09 0.11550513 0.025884817 -35.394018 45.363162 6596.6327 1.8950266e+09 0.11253263 0.025724397 -35.474930 45.271217 6598.7413 1.7849113e+09 0.11028092 0.025053230 -35.554208 45.180906 6600.8499 1.6807199e+09 0.10969769 0.026737189 -35.631432 45.092649 6602.9585 1.5835236e+09 0.10829664 0.026698646 -35.708656 45.004393 6605.0672 1.4963938e+09 0.10697294 0.026721386 -35.788541 44.913476 6607.1758 1.4178666e+09 0.10501733 0.025359911 -35.869442 44.821543 6609.2844 1.3469955e+09 0.10137270 0.023790407 -35.950310 44.729643 6611.3930 1.2744312e+09 0.098059762 0.024707841 -36.027551 44.641371 6613.5016 1.2074806e+09 0.096414092 0.023757631 -36.104775 44.553115 6615.6102 1.1458843e+09 0.094277276 0.023270306 -36.183570 44.460538 6617.7188 1.0749550e+09 0.092842591 0.023677575 -36.266312 44.357112 6619.8274 1.0089449e+09 0.091820912 0.024725563 -36.349053 44.253686 6621.9361 9.3998158e+08 0.090647114 0.024779187 -36.427016 44.163412 6624.0447 8.8573318e+08 0.088958660 0.024886220 -36.504250 44.075144 6626.1533 8.3693311e+08 0.088091999 0.026395613 -36.580935 43.986331 6628.2619 7.9006170e+08 0.086760247 0.025809425 -36.654482 43.894398 6630.3705 7.4798955e+08 0.085519720 0.025929215 -36.728029 43.802465 6632.4791 7.0409853e+08 0.084201157 0.026089795 -36.801575 43.710532 6634.5877 6.6632366e+08 0.082942155 0.026369714 -36.875122 43.618599 6636.6963 6.3509088e+08 0.081540620 0.026279337 -36.948669 43.526666 6638.8049 6.0141826e+08 0.080558019 0.025636573 -37.022215 43.437343 6640.9136 5.7074541e+08 0.081137317 0.025158876 -37.095760 43.349086 6643.0222 5.3897519e+08 0.080793994 0.025195966 -37.169307 43.260826 6645.1308 5.0224578e+08 0.079878112 0.025512952 -37.247875 43.157530 6647.2394 4.7279479e+08 0.078738086 0.026563823 -37.326492 43.054089 6649.3480 4.3705666e+08 0.077803123 0.027153977 -37.402199 42.959360 6651.4566 4.1050934e+08 0.077401468 0.026834098 -37.475746 42.871106 6653.5652 3.9179703e+08 0.076787619 0.027814248 -37.549293 42.782851 6655.6738 3.7294050e+08 0.075154748 0.027888649 -37.619697 42.691453 6657.7825 3.5776367e+08 0.073505720 0.029808733 -37.689565 42.599520 6659.8911 3.3413544e+08 0.072097387 0.031648721 -37.759434 42.508084 6661.9997 3.1754372e+08 0.070520113 0.033044107 -37.829303 42.419827 6664.1083 3.0640066e+08 0.069123026 0.031809861 -37.899172 42.331570 6666.2169 2.9691029e+08 0.069137850 0.026950861 -37.972672 42.237008 6668.3255 2.8265230e+08 0.068410142 0.027758830 -38.051277 42.133582 6670.4341 2.6916292e+08 0.068309610 0.027127509 -38.129825 42.030208 6672.5427 2.5329859e+08 0.068286118 0.027194179 -38.196102 41.938193 6674.6513 2.4098198e+08 0.067299196 0.029504246 -38.262302 41.846248 6676.7600 2.2799918e+08 0.065334677 0.032203514 -38.329528 41.755334 6678.8686 2.1542141e+08 0.064805107 0.030355676 -38.399396 41.667079 6680.9772 2.0721966e+08 0.065892220 0.029652431 -38.469265 41.578824 6683.0858 1.9868329e+08 0.066584024 0.031314315 -38.541709 41.482071 6685.1944 1.8612873e+08 0.066514062 0.032910179 -38.616176 41.378645 6687.3030 1.6995514e+08 0.064880349 0.034173904 -38.689461 41.277387 6689.4116 1.5995393e+08 0.062537634 0.033645491 -38.755653 41.189130 6691.5202 1.5014935e+08 0.061705910 0.032878520 -38.821845 41.100873 6693.6289 1.4421846e+08 0.060845788 0.031388353 -38.891542 41.006191 6695.7375 1.3432331e+08 0.060686576 0.029724010 -38.966009 40.902765 6697.8461 1.2342464e+08 0.060080635 0.030198338 -39.040394 40.799491 6699.9547 1.1532384e+08 0.058649895 0.030709527 -39.106624 40.711169 6702.0633 1.0845206e+08 0.057055706 0.032927276 -39.172825 40.622902 6704.1719 1.0210585e+08 0.057460339 0.036261971 -39.240212 40.530279 6706.2805 98617283. 0.057389004 0.038934635 -39.310541 40.426853 6708.3891 98142676. 0.056927278 0.040467333 -39.380870 40.323427 6710.4977 94524625. 0.055560564 0.040593923 -39.447600 40.233201 6712.6064 90440486. 0.053612567 0.042955766 -39.513792 40.144944 6714.7150 82478303. 0.051769993 0.047357160 -39.580608 40.054399 6716.8236 78224489. 0.050009757 0.049614422 -39.650939 39.950973 6718.9322 77716018. 0.047853347 0.051264237 -39.721270 39.847546 6721.0408 79254529. 0.048406266 0.050316194 -39.785865 39.755251 6723.1494 78160962. 0.047450511 0.049452277 -39.848379 39.666996 6725.2580 71832400. 0.043485824 0.041414841 -39.911011 39.578513 6727.3666 70353119. 0.042298533 0.040471915 -39.981346 39.475082 6729.4753 67916399. 0.041717158 0.040728659 -40.051687 39.371640 6731.5839 67467187. 0.040072831 0.042912024 -40.119550 39.270679 6733.6925 67899890. 0.039020234 0.047683966 -40.185743 39.171388 6735.8011 61516069. 0.040191392 0.050143847 -40.251273 39.073424 6737.9097 62056168. 0.041296730 0.057033438 -40.313787 38.981491 6740.0183 59961281. 0.040007497 0.064081645 -40.376301 38.889558 6742.1269 55435651. 0.030257828 0.068920024 -40.440510 38.794234 6744.2355 55348322. 0.032153760 0.077975593 -40.506703 38.694944 6746.3441 51471933. 0.043389680 0.074986181 -40.572896 38.595473