# # 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 = 51.240413 km # Date (UTC) = 2015-12-02T08:08:16.102 # Date (julian) = 2457358.83907526 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6498.1196 8.5911656e+10 0.037939247 0.031716177 134.28705 26.406894 6500.5556 7.7424448e+10 0.046866004 0.032450737 134.34028 26.282686 6502.9915 7.0485956e+10 0.056087317 0.033185297 134.39763 26.148864 6505.4275 6.3741900e+10 0.065576217 0.033919857 134.45332 26.018928 6507.8635 5.8147770e+10 0.075578798 0.034654417 134.50430 25.899978 6510.2994 5.3395267e+10 0.086187390 0.035388977 134.55527 25.781028 6512.7354 4.9104342e+10 0.097381129 0.036123537 134.61204 25.648567 6515.1714 4.4762187e+10 0.10906203 0.036858097 134.66940 25.514726 6517.6073 4.0428453e+10 0.12123291 0.037592657 134.72156 25.393024 6520.0433 3.6776594e+10 0.13416403 0.038327217 134.77254 25.274074 6522.4793 3.3653628e+10 0.14650523 0.039042757 134.82646 25.148263 6524.9153 3.0570929e+10 0.15440367 0.039752107 134.88381 25.014443 6527.3512 2.7606401e+10 0.16033998 0.040971460 134.93881 24.886109 6529.7872 2.5025804e+10 0.16596811 0.043489707 134.98978 24.767158 6532.2232 2.2781958e+10 0.17087690 0.046870616 135.04079 24.647984 6534.6591 2.0676795e+10 0.17384068 0.048128941 135.09336 24.514163 6537.0951 1.8667067e+10 0.17552645 0.048730060 135.14593 24.380343 6539.5311 1.6861854e+10 0.17612740 0.050286469 135.19704 24.260228 6541.9670 1.5416255e+10 0.17469081 0.051012928 135.24803 24.141262 6544.4030 1.4178398e+10 0.17243485 0.051971272 135.29992 24.016562 6546.8390 1.2983049e+10 0.17001064 0.053154865 135.35250 23.887520 6549.2749 1.1859380e+10 0.16734745 0.054246468 135.40431 23.763289 6551.7109 1.0913848e+10 0.16538414 0.055485292 135.45529 23.644339 6554.1469 1.0102816e+10 0.16268119 0.054835462 135.50646 23.523563 6556.5828 9.2993412e+09 0.16031098 0.053927436 135.55903 23.389742 6559.0188 8.5044878e+09 0.15739252 0.052385058 135.61155 23.256374 6561.4548 7.7673180e+09 0.15453787 0.051148572 135.66253 23.137423 6563.8908 7.1662707e+09 0.15141079 0.048897967 135.71351 23.018472 6566.3267 6.6237763e+09 0.14900959 0.046998057 135.76556 22.892694 6568.7627 6.0963355e+09 0.14699684 0.045070565 135.81814 22.763652 6571.1987 5.6004229e+09 0.14532043 0.044449016 135.86730 22.640497 6573.6346 5.1909049e+09 0.14297246 0.043148204 135.91404 22.521532 6576.0706 4.8484579e+09 0.14021707 0.041290130 135.96212 22.400243 6578.5066 4.5114075e+09 0.13720707 0.037849680 136.01469 22.271201 6580.9425 4.1829454e+09 0.13410271 0.035649710 136.06646 22.143554 6583.3785 3.8890125e+09 0.13153566 0.034830082 136.11319 22.024603 6585.8145 3.6409133e+09 0.12846270 0.033319617 136.15992 21.905653 6588.2504 3.4104376e+09 0.12585032 0.033296293 136.21123 21.778788 6590.6864 3.1779946e+09 0.12232533 0.029785225 136.26381 21.649747 6593.1224 2.9570291e+09 0.11881604 0.026988439 136.31234 21.527688 6595.5584 2.7701263e+09 0.11486660 0.025681474 136.35907 21.408738 6597.9943 2.6081617e+09 0.11180953 0.025408957 136.40616 21.286369 6600.4303 2.4502605e+09 0.11082899 0.025874477 136.45396 21.157308 6602.8663 2.2930442e+09 0.11014481 0.026777400 136.50150 21.030734 6605.3022 2.1532306e+09 0.10954799 0.026918591 136.54823 20.911785 6607.7382 2.0314112e+09 0.10783978 0.024249328 136.59496 20.792835 6610.1742 1.9168061e+09 0.10474488 0.024169393 136.64691 20.664882 6612.6101 1.8024746e+09 0.10286611 0.023864880 136.69948 20.535840 6615.0461 1.6961779e+09 0.10183038 0.023252950 136.74398 20.418266 6617.4821 1.5986416e+09 0.10065566 0.023599080 136.78646 20.303564 6619.9180 1.5112890e+09 0.10007066 0.024747423 136.83344 20.182469 6622.3540 1.4246164e+09 0.098735983 0.024663766 136.88601 20.053426 6624.7900 1.3376255e+09 0.097102753 0.025285184 136.93502 19.927946 6627.2260 1.2674093e+09 0.094951065 0.025404092 136.97751 19.808981 6629.6619 1.2005837e+09 0.093620898 0.025989427 137.02001 19.690000 6632.0979 1.1376536e+09 0.091618500 0.026044083 137.07257 19.560975 6634.5339 1.0719617e+09 0.089960527 0.026365785 137.12514 19.431933 6636.9698 1.0102211e+09 0.088202979 0.026173128 137.16855 19.315905 6639.4058 9.6249295e+08 0.087127471 0.025483033 137.21103 19.201203 6641.8418 9.2222834e+08 0.087211914 0.025151159 137.25646 19.078562 6644.2777 8.8125647e+08 0.085786037 0.025373623 137.30425 18.949519 6646.7137 8.3097452e+08 0.084318028 0.026289584 137.35204 18.820478 6649.1497 7.8221181e+08 0.082778325 0.027427369 137.39983 18.691437 6651.5856 7.3797011e+08 0.082240179 0.026932977 137.44567 18.567685 6654.0216 7.0297398e+08 0.081523982 0.028027018 137.48815 18.452983 6656.4576 6.7173617e+08 0.079692510 0.028425034 137.53079 18.338067 6658.8936 6.3622322e+08 0.078168916 0.031645809 137.58336 18.209025 6661.3295 6.0191236e+08 0.076913715 0.032702781 137.63593 18.079983 6663.7655 5.7191183e+08 0.075584480 0.032271077 137.67920 17.964157 6666.2015 5.4877020e+08 0.075570696 0.026947852 137.72169 17.849439 6668.6374 5.2451541e+08 0.074524878 0.028034852 137.76720 17.726571 6671.0734 4.9823824e+08 0.074459971 0.026866394 137.81499 17.597530 6673.5094 4.7150461e+08 0.073913272 0.028221011 137.86050 17.468488 6675.9453 4.4248601e+08 0.071646281 0.031609020 137.90351 17.339446 6678.3813 4.1637972e+08 0.070531069 0.030681582 137.94836 17.210405 6680.8173 3.8941228e+08 0.071244387 0.029617900 137.99616 17.081363 6683.2532 3.6791700e+08 0.071863382 0.031559710 138.04240 16.956508 6685.6892 3.5575009e+08 0.071314014 0.033432814 138.08489 16.841805 6688.1252 3.4335106e+08 0.068589453 0.033814086 138.12737 16.727102 6690.5611 3.3042765e+08 0.066529937 0.033051556 138.17483 16.598949 6692.9971 3.1079266e+08 0.065513167 0.031607435 138.22262 16.469908 6695.4331 2.9177210e+08 0.064833134 0.029779921 138.27042 16.340850 6697.8691 2.7882139e+08 0.063941661 0.030201246 138.31823 16.211789 6700.3050 2.6646954e+08 0.061990232 0.030893964 138.36242 16.086345 6702.7410 2.5468710e+08 0.060847882 0.033468418 138.40543 15.962082 6705.1770 2.4053025e+08 0.061065820 0.036983212 138.44810 15.844143 6707.6129 2.2827883e+08 0.060757061 0.040099024 138.49058 15.729441 6710.0489 2.2065119e+08 0.059744902 0.040506067 138.53323 15.610330 6712.4849 2.1389146e+08 0.057575967 0.042730202 138.57624 15.481288 6714.9208 2.0618849e+08 0.055552045 0.047372637 138.62028 15.352246 6717.3568 1.9619048e+08 0.053489415 0.049852198 138.66808 15.223204 6719.7928 1.8522211e+08 0.052022989 0.050616642 138.71529 15.094749 6722.2287 1.7822867e+08 0.052211167 0.050322413 138.75830 14.970487 6724.6647 1.6908164e+08 0.048785815 0.044375854 138.80146 14.846079 6727.1007 1.6207756e+08 0.046523299 0.040826245 138.84924 14.717037 6729.5367 1.5570770e+08 0.046072760 0.040687734 138.89703 14.587996 6731.9726 1.4653634e+08 0.044427875 0.043685725 138.94035 14.463436 6734.4086 1.4104935e+08 0.044070104 0.049329016 138.98337 14.339173 6736.8446 1.3424428e+08 0.046336462 0.053547921 139.02639 14.210853 6739.2805 1.2822828e+08 0.047392076 0.063169868 139.06941 14.081792 6741.7165 1.2668081e+08 0.045769987 0.067802191 139.11602 13.956347 6744.1525 1.2167248e+08 0.041120546 0.077911343 139.16381 13.832085 6746.5884 1.1675700e+08 0.038115118 0.072146028 139.20844 13.704662 6749.0244 1.1362318e+08 0.036794080 0.072271251 139.25146 13.575621 6751.4604 1.0995028e+08 0.033252149 0.073906321 139.29448 13.449298 6753.8963 1.0931442e+08 0.031296657 0.075878026 139.33749 13.325036 6756.3323 1.0380322e+08 0.028900959 0.075022003 139.38050 13.200773 6758.7683 97907948. 0.029473367 0.075329959 139.42351 13.076510 6761.2043 90839871. 0.031159121 0.077985100 139.46653 12.950410 6763.6402 84919746. 0.037050853 0.078387573 139.50954 12.821368 6766.0762 80407287. 0.039699345 0.079886092 139.55435 12.688538 6768.5122 75298907. 0.036373317 0.082698897 139.60351 12.546522 6770.9481 68339442. 0.032585274 0.089179330 139.65204 12.412693 6773.3841 63601390. 0.029091868 0.095087626 139.69983 12.288430 6775.8201 62828127. 0.025268054 0.10099592 139.74586 12.162405 6778.2560 63515458. 0.021401394 0.10690422 139.78888 12.033362 6780.6920 65667091. 0.017594351 0.11281251 139.83058 11.905641 6783.1280 62215333. 0.015223077 0.11872081 139.86881 11.781379 6785.5639 58074595. 0.014599449 0.12462911 139.90905 11.653848 6787.9999 51074601. 0.034108182 0.13053740 139.95821 11.511830 6790.4359 47934229. 0.011716847 0.13644570 140.00521 11.376081 6792.8719 48110107. -0.035805273 0.14235399 140.04823 11.251800