# # 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 = 52.106507 km # Date (UTC) = 2015-01-13T09:11:28.520 # Date (julian) = 2457035.88296898 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6496.9146 1.2666300e+11 0.039216487 0.031352828 -16.522314 51.652577 6499.4811 1.0569301e+11 0.048222453 0.032126742 -16.672828 51.514789 6502.0476 8.7703605e+10 0.057035730 0.032900657 -16.828209 51.370918 6504.6141 7.3539207e+10 0.065715637 0.033674571 -16.965639 51.243669 6507.1806 6.3202895e+10 0.074483945 0.034448485 -17.101595 51.117784 6509.7470 5.5954205e+10 0.083709084 0.035222399 -17.237549 50.987175 6512.3135 4.9891956e+10 0.093483905 0.035996314 -17.373503 50.856254 6514.8800 4.4279624e+10 0.10377765 0.036770228 -17.522476 50.713002 6517.4465 3.9349657e+10 0.11477327 0.037544142 -17.668089 50.572990 6520.0129 3.5016502e+10 0.12652455 0.038318056 -17.799009 50.447105 6522.5794 3.1513760e+10 0.13772090 0.039068976 -17.929929 50.320069 6525.1459 2.8587952e+10 0.14474641 0.039765565 -18.060849 50.189150 6527.7124 2.6006962e+10 0.15034732 0.041233655 -18.190547 50.059453 6530.2788 2.3747073e+10 0.15600364 0.044219067 -18.316432 49.933568 6532.8453 2.1606583e+10 0.16111386 0.047390365 -18.446934 49.803066 6535.4118 1.9523515e+10 0.16422325 0.048045663 -18.590805 49.659195 6537.9783 1.7573759e+10 0.16746455 0.049146436 -18.725340 49.522047 6540.5447 1.5892800e+10 0.16965349 0.051111454 -18.851225 49.391128 6543.1112 1.4516731e+10 0.16984268 0.051411084 -18.974425 49.262893 6545.6777 1.3382875e+10 0.16880185 0.052461639 -19.095274 49.137008 6548.2442 1.2249138e+10 0.16737584 0.053740565 -19.216132 49.008357 6550.8107 1.1231572e+10 0.16522810 0.055188340 -19.336999 48.877417 6553.3771 1.0367231e+10 0.16341305 0.055145489 -19.457856 48.749315 6555.9436 9.6104390e+09 0.16083854 0.054060510 -19.578706 48.623431 6558.5101 8.9159281e+09 0.15872391 0.052804651 -19.709493 48.483882 6561.0766 8.1579211e+09 0.15579950 0.051334954 -19.847610 48.334257 6563.6430 7.4678122e+09 0.15333333 0.049184522 -19.967040 48.200304 6566.2095 6.8737761e+09 0.15111621 0.047064363 -20.082854 48.069383 6568.7760 6.4043439e+09 0.14942303 0.045058343 -20.198667 47.942753 6571.3425 5.9817575e+09 0.14800456 0.044409741 -20.314480 47.816868 6573.9089 5.5656399e+09 0.14578948 0.042928077 -20.425933 47.686624 6576.4754 5.1898598e+09 0.14353322 0.040824176 -20.536712 47.555704 6579.0419 4.8492962e+09 0.14037546 0.037047466 -20.647490 47.429216 6581.6084 4.5382375e+09 0.13771393 0.035412385 -20.758269 47.303332 6584.1748 4.2721635e+09 0.13477634 0.034420264 -20.869047 47.172944 6586.7413 4.0120496e+09 0.13190642 0.033161713 -20.979825 47.042024 6589.3078 3.7359497e+09 0.12891036 0.032435325 -21.104978 46.894116 6591.8743 3.4709179e+09 0.12517794 0.028215388 -21.228886 46.748538 6594.4408 3.2120911e+09 0.12133026 0.025930570 -21.339665 46.622654 6597.0072 2.9944344e+09 0.11688081 0.025720445 -21.449514 46.495840 6599.5737 2.8111697e+09 0.11386171 0.024964236 -21.555257 46.364919 6602.1402 2.6459762e+09 0.11246096 0.027397005 -21.661003 46.234994 6604.7067 2.4974395e+09 0.11085467 0.026490869 -21.766762 46.109091 6607.2731 2.3518036e+09 0.10963213 0.025167649 -21.872518 45.982120 6609.8396 2.2153316e+09 0.10643236 0.023955337 -21.978260 45.851201 6612.4061 2.0815529e+09 0.10416160 0.024017335 -22.082860 45.720282 6614.9726 1.9589885e+09 0.10312313 0.023270431 -22.183568 45.589363 6617.5390 1.8505846e+09 0.10183535 0.023617968 -22.284276 45.458443 6620.1055 1.7571932e+09 0.10109302 0.024801202 -22.384983 45.327522 6622.6720 1.6594224e+09 0.099507741 0.024579129 -22.489361 45.193298 6625.2385 1.5561203e+09 0.097836536 0.025682177 -22.604458 45.049426 6627.8050 1.4521897e+09 0.095813975 0.025627751 -22.712110 44.912257 6630.3714 1.3577881e+09 0.094133582 0.025929217 -22.812818 44.781338 6632.9379 1.2826127e+09 0.092219834 0.026144807 -22.913525 44.650418 6635.5044 1.2196169e+09 0.090118163 0.026475427 -23.014232 44.519498 6638.0709 1.1571080e+09 0.088430027 0.025668555 -23.112193 44.391324 6640.6373 1.0973470e+09 0.088098029 0.025192673 -23.207866 44.265439 6643.2038 1.0409709e+09 0.087249100 0.025223391 -23.303538 44.136737 6645.7703 9.9086755e+08 0.085487541 0.025812536 -23.399211 44.005818 6648.3368 9.4399997e+08 0.083707803 0.027189716 -23.494883 43.874898 6650.9032 8.9578689e+08 0.082450988 0.026462015 -23.590554 43.743977 6653.4697 8.5492992e+08 0.081272166 0.027765483 -23.686234 43.616005 6656.0362 8.1282403e+08 0.078826958 0.028055186 -23.781921 43.490102 6658.6027 7.6896465e+08 0.076763212 0.031129929 -23.882354 43.349933 6661.1691 7.2217979e+08 0.075161097 0.032621100 -23.985923 43.200333 6663.7356 6.7498148e+08 0.073881148 0.032279353 -24.082682 43.066856 6666.3021 6.3743115e+08 0.074017331 0.026967463 -24.178369 42.935915 6668.8686 6.0605012e+08 0.072958779 0.028239404 -24.269620 42.809416 6671.4351 5.7671920e+08 0.073141230 0.026871548 -24.360257 42.683532 6674.0015 5.5213196e+08 0.072432605 0.028956083 -24.450893 42.553154 6676.5680 5.2699097e+08 0.069960263 0.032079802 -24.541529 42.422235 6679.1345 4.9790115e+08 0.069241257 0.030156639 -24.643906 42.274358 6681.7010 4.7051098e+08 0.070501571 0.030195125 -24.744455 42.127892 6684.2674 4.4393786e+08 0.070853573 0.032667663 -24.830057 41.996971 6686.8339 4.1824027e+08 0.069490374 0.034246269 -24.915658 41.866972 6689.4004 3.9710552e+08 0.066529861 0.033655608 -25.001260 41.741087 6691.9669 3.7567075e+08 0.065381008 0.032773146 -25.087854 41.614210 6694.5333 3.6287686e+08 0.064410368 0.030513517 -25.178491 41.483291 6697.0998 3.4892549e+08 0.063813594 0.030103898 -25.270646 41.348424 6699.6663 3.2763364e+08 0.062168974 0.030975630 -25.368479 41.198797 6702.2328 3.0727359e+08 0.060336040 0.033062601 -25.458137 41.060409 6704.7993 2.9042625e+08 0.060626228 0.036570028 -25.538703 40.934525 6707.3657 2.7735722e+08 0.060107880 0.040134436 -25.621724 40.806186 6709.9322 2.6497700e+08 0.058856136 0.040539616 -25.707326 40.675266 6712.4987 2.4953269e+08 0.056265403 0.042755842 -25.799061 40.534965 6715.0652 2.3399758e+08 0.053857795 0.047445230 -25.896893 40.385338 6717.6316 2.2004592e+08 0.051409134 0.049835199 -25.981537 40.253846 6720.1981 2.0785056e+08 0.050069062 0.050396812 -26.062103 40.127962 6722.7646 1.9733025e+08 0.049562903 0.049659975 -26.142679 39.998146 6725.3311 1.8957518e+08 0.045027323 0.041369220 -26.223257 39.867208 6727.8975 1.7832868e+08 0.043816827 0.039764605 -26.312944 39.721466 6730.4640 1.6841764e+08 0.042208740 0.041015127 -26.404394 39.573136 6733.0305 1.5944352e+08 0.040654535 0.044089866 -26.484960 39.447251 6735.5970 1.4958421e+08 0.041221540 0.049927160 -26.565922 39.319737 6738.1634 1.4116455e+08 0.042732290 0.058220942 -26.652244 39.170110 6740.7299 1.3072137e+08 0.041873384 0.065297311 -26.736662 39.028340 6743.2964 1.2391140e+08 0.037505904 0.073046949 -26.817228 38.902456 6745.8629 1.1856643e+08 0.034776432 0.078929633 -26.896058 38.774834 6748.4294 1.1540870e+08 0.030578658 0.069275743 -26.971588 38.643916 6750.9958 1.1361322e+08 0.027685920 0.073704551 -27.053060 38.506280 6753.5623 1.1273157e+08 0.024608747 0.074797017 -27.145137 38.356653 6756.1288 1.1138906e+08 0.021845618 0.074498288 -27.233639 38.210602 6758.6953 1.0540960e+08 0.021560237 0.075175542 -27.319962 38.066730 6761.2617 99873791. 0.022777000 0.077989849 -27.392297 37.934305 6763.8282 96528308. 0.028050275 0.078960106 -27.462792 37.803386 6766.3947 96369275. 0.029701890 0.080606543 -27.547497 37.660839 6768.9612 93249831. 0.024758152 0.084314529 -27.632093 37.519041 6771.5276 87699120. 0.019926870 0.090584907 -27.707623 37.388121 6774.0941 83459115. 0.015177546 0.096809741 -27.784031 37.254945 6776.6606 80582592. 0.010496194 0.10303458 -27.864598 37.111074 6779.2271 78103329. 0.0058131070 0.10925941 -27.947678 36.964691 6781.7935 76190754. 0.0011039851 0.11548424 -28.034000 36.815065 6784.3600 72463469. -0.0038441493 0.12170908 -28.109263 36.682030 6786.9265 68722625. -0.0089643405 0.12793391 -28.179759 36.556146 6789.4930 65533120. -0.014281351 0.13415875 -28.257435 36.413336 6792.0595 61252096. -0.020160631 0.14038358 -28.338002 36.263709 6794.6259 56788012. -0.026868566 0.14660841 -28.418569 36.119696 6797.1924 55032133. -0.034432737 0.15283325 -28.499137 35.974458 6799.7589 52193775. -0.045955529 0.15905808 -28.579705 35.824833 6802.3254 50845318. -0.088685949 0.16528292 -28.655239 35.687075 6804.8918 51335562. -0.061226533 0.17150775 -28.725734 35.561190 6807.4583 49311151. 0.0026460435 0.17773259 -28.798448 35.423104