# # 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 = 45.870353 km # Date (UTC) = 2013-01-26T09:48:28.994 # Date (julian) = 2456318.90866891 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6500.4784 8.0306743e+10 0.046499238 0.032427458 -22.481709 57.743987 6502.5659 7.6056268e+10 0.056450017 0.033056936 -22.703507 57.573599 6504.6533 7.0228822e+10 0.066368092 0.033686414 -22.919725 57.403247 6506.7408 6.4246740e+10 0.076419680 0.034315892 -23.135974 57.232870 6508.8283 5.8961428e+10 0.086790119 0.034945370 -23.347972 57.065399 6510.9158 5.4983532e+10 0.097713344 0.035574848 -23.522727 56.923409 6513.0033 5.1208026e+10 0.10891797 0.036204326 -23.706981 56.773702 6515.0908 4.7452450e+10 0.12033952 0.036833804 -23.916695 56.603311 6517.1783 4.3735463e+10 0.13196945 0.037463282 -24.096239 56.454122 6519.2658 3.9704288e+10 0.14362020 0.038092760 -24.265501 56.312161 6521.3533 3.6103124e+10 0.15546272 0.038722238 -24.465757 56.144204 6523.4408 3.3191113e+10 0.16347916 0.039288360 -24.653641 55.984845 6525.5283 3.0878470e+10 0.16952974 0.039721924 -24.817473 55.842855 6527.6158 2.8824224e+10 0.17498157 0.041163528 -24.999572 55.685037 6529.7033 2.6598263e+10 0.17897512 0.043356023 -25.194978 55.515367 6531.7908 2.4339756e+10 0.18179012 0.046379636 -25.353318 55.367946 6533.8783 2.2384885e+10 0.18269139 0.047892817 -25.517999 55.215932 6535.9657 2.0701890e+10 0.18130092 0.047805361 -25.708054 55.045540 6538.0532 1.9027478e+10 0.18124453 0.049182605 -25.876752 54.894293 6540.1407 1.7394535e+10 0.17983153 0.050920587 -26.035123 54.752303 6542.2282 1.6257014e+10 0.17665934 0.051088884 -26.188892 54.605710 6544.3157 1.5334232e+10 0.17401497 0.051900463 -26.342087 54.457989 6546.4032 1.4385806e+10 0.17139659 0.052796303 -26.519034 54.287597 6548.4907 1.3373296e+10 0.16927748 0.053814187 -26.684287 54.128367 6550.5782 1.2296150e+10 0.16733220 0.055130135 -26.837166 53.980947 6552.6657 1.1326749e+10 0.16552624 0.055419213 -26.986493 53.837080 6554.7532 1.0497463e+10 0.16327580 0.054848185 -27.133943 53.695090 6556.8407 9.8808659e+09 0.16065993 0.053889531 -27.276897 53.548606 6558.9282 9.3610209e+09 0.15749697 0.052448391 -27.418886 53.401159 6561.0157 8.8288008e+09 0.15428964 0.051364963 -27.589056 53.224443 6563.1032 8.2885416e+09 0.15158854 0.049809040 -27.746205 53.063795 6565.1906 7.7388815e+09 0.14885964 0.048101914 -27.888195 52.921805 6567.2781 7.2089893e+09 0.14631383 0.046382012 -28.026698 52.776366 6569.3656 6.6976463e+09 0.14385473 0.044876222 -28.163198 52.628945 6571.4531 6.0910095e+09 0.14197256 0.044379517 -28.299720 52.481503 6573.5406 5.6491840e+09 0.13932033 0.043223646 -28.436247 52.334055 6575.6281 5.2254842e+09 0.13661127 0.041744512 -28.572775 52.186605 6577.7156 4.8256529e+09 0.13369833 0.039096327 -28.708531 52.039926 6579.8031 4.5433546e+09 0.13030362 0.036628998 -28.839597 51.897937 6581.8906 4.2635843e+09 0.12700483 0.035326925 -28.970663 51.754253 6583.9781 4.1038920e+09 0.12349425 0.034526603 -29.101730 51.606803 6586.0656 3.8696489e+09 0.12065682 0.033170448 -29.230180 51.459353 6588.1531 3.5245584e+09 0.11903238 0.033328812 -29.355785 51.311903 6590.2406 3.2091623e+09 0.11710384 0.030614577 -29.484912 51.164473 6592.3281 2.8570523e+09 0.11539073 0.027754881 -29.615952 51.017054 6594.4156 2.6427164e+09 0.11333591 0.025944406 -29.738096 50.869610 6596.5030 2.6076121e+09 0.11023943 0.025724987 -29.858242 50.722161 6598.5905 2.5147455e+09 0.10813068 0.025125221 -29.983767 50.574710 6600.6780 2.5062860e+09 0.10721581 0.026383783 -30.108530 50.427260 6602.7655 2.3551471e+09 0.10626821 0.026863365 -30.228674 50.279810 6604.8530 2.0906449e+09 0.10588412 0.026577770 -30.348818 50.132360 6606.9405 1.9015422e+09 0.10514207 0.025813895 -30.468963 49.984910 6609.0280 1.7001060e+09 0.10274933 0.023714250 -30.589107 49.837460 6611.1155 1.6673691e+09 0.099551672 0.024884803 -30.709251 49.690010 6613.2030 1.7098559e+09 0.097745408 0.023648068 -30.825771 49.542579 6615.2905 1.7368833e+09 0.095686241 0.023260469 -30.940431 49.395158 6617.3780 1.8289091e+09 0.093448153 0.023564566 -31.059639 49.247713 6619.4655 1.6125300e+09 0.093196946 0.024638225 -31.179775 49.100264 6621.5530 1.4097725e+09 0.092757381 0.024906165 -31.289026 48.952815 6623.6405 1.2636460e+09 0.091412845 0.024729105 -31.399160 48.805367 6625.7279 1.1990533e+09 0.090128472 0.026266266 -31.513844 48.657917 6627.8154 1.3696257e+09 0.086826852 0.025631803 -31.621450 48.517544 6629.9029 1.3002163e+09 0.085424501 0.025945851 -31.715066 48.391162 6631.9904 1.2260090e+09 0.083681761 0.026031373 -31.811797 48.260576 6634.0779 1.1916478e+09 0.082188303 0.026332527 -31.921018 48.113126 6636.1654 1.1327567e+09 0.080966552 0.026485515 -32.030240 47.965676 6638.2529 1.1552604e+09 0.079824774 0.025660624 -32.139461 47.818226 6640.3404 9.2441288e+08 0.081056647 0.025229003 -32.248672 47.667859 6642.4279 7.7087827e+08 0.081953147 0.025169206 -32.357873 47.514978 6644.5154 7.6340846e+08 0.080850867 0.025399308 -32.463235 47.365930 6646.6029 7.0573355e+08 0.080121843 0.026232218 -32.566998 47.218480 6648.6904 6.9389811e+08 0.079045031 0.027426423 -32.657791 47.089458 6650.7779 5.6149377e+08 0.079781557 0.026433313 -32.746725 46.963076 6652.8654 4.8741064e+08 0.080224387 0.027488617 -32.846605 46.821140 6654.9529 5.6986863e+08 0.077900046 0.027630301 -32.950365 46.673690 6657.0403 6.0252692e+08 0.075562186 0.028947912 -33.049172 46.526240 6659.1278 5.8556812e+08 0.074028189 0.031807931 -33.147887 46.378790 6661.2153 5.4714483e+08 0.072882338 0.032644623 -33.251650 46.231340 6663.3028 5.1564433e+08 0.071755529 0.032399292 -33.350634 46.089049 6665.3903 5.1532746e+08 0.071176850 0.027907579 -33.434888 45.962667 6667.4778 4.9270153e+08 0.070618328 0.027278966 -33.520666 45.833405 6669.5653 4.5970176e+08 0.069812374 0.027775094 -33.618966 45.680495 6671.6528 4.2253725e+08 0.069845370 0.026874651 -33.717260 45.529108 6673.7403 4.0013175e+08 0.069194640 0.028566378 -33.815540 45.381687 6675.8278 3.7600428e+08 0.067181790 0.031383869 -33.911395 45.234254 6677.9153 3.6770829e+08 0.066056975 0.031057055 -34.004235 45.086804 6680.0028 3.6000218e+08 0.066288718 0.029442015 -34.088918 44.952305 6682.0903 3.5231836e+08 0.067139691 0.030493508 -34.168491 44.825923 6684.1778 3.4781137e+08 0.067455890 0.032663112 -34.254411 44.689464 6686.2653 3.3303025e+08 0.066914272 0.033915411 -34.347250 44.542016 6688.3527 3.1990212e+08 0.064629041 0.033866616 -34.440089 44.394566 6690.4402 3.0354544e+08 0.063377713 0.033065412 -34.532928 44.247115 6692.5277 2.8880418e+08 0.062721748 0.032152507 -34.625767 44.095207 6694.6152 2.7942397e+08 0.062215728 0.030398759 -34.718604 43.942300 6696.7027 2.6658082e+08 0.062096283 0.029967750 -34.793769 43.815515 6698.7902 2.5512207e+08 0.061192782 0.031302471 -34.868662 43.689133 6700.8777 2.4188949e+08 0.059715519 0.031318735 -34.958783 43.544874 6702.9652 2.2880828e+08 0.059595364 0.033647444 -35.051525 43.397427 6705.0527 2.1733857e+08 0.059991857 0.036762277 -35.138885 43.250007 6707.1402 2.0757144e+08 0.059833464 0.040166745 -35.223927 43.106498 6709.2277 1.9936260e+08 0.059354242 0.040987731 -35.298820 42.980116 6711.3152 1.9347779e+08 0.057721387 0.041050808 -35.374332 42.852688 6713.4027 1.8549732e+08 0.055889445 0.045142965 -35.461710 42.705238 6715.4902 1.7456136e+08 0.054267807 0.047879905 -35.547895 42.556595 6717.5776 1.6171428e+08 0.052480350 0.049838538 -35.629812 42.403685 6719.6651 1.5435141e+08 0.051015509 0.050737907 -35.709008 42.261050 6721.7526 1.4987329e+08 0.051238029 0.050530671 -35.783901 42.134668 6723.8401 1.4681661e+08 0.049434819 0.049837497 -35.860557 42.002999 6725.9276 1.4109740e+08 0.045595265 0.040996580 -35.942474 41.855549 6728.0151 1.3102591e+08 0.044978312 0.039649521 -36.024390 41.708100 6730.1026 1.2275538e+08 0.043710508 0.040519589 -36.106306 41.560650 6732.1901 1.1390851e+08 0.042176269 0.043775206 -36.188213 41.413216 6734.2776 1.1146697e+08 0.041364625 0.049336898 -36.270115 41.265795 6736.3651 1.0819054e+08 0.042925864 0.051735236 -36.343164 41.134304 6738.4526 1.0505356e+08 0.043788646 0.059812748 -36.413375 41.007922 6740.5401 1.0417232e+08 0.042965447 0.064972983 -36.487464 40.868461 6742.6276 1.0039622e+08 0.039873426 0.070139933 -36.563921 40.721011 6744.7151 97427840. 0.035949300 0.078346492 -36.644688 40.573561 6746.8026 91140364. 0.031772920 0.069656715 -36.726603 40.426111 6748.8900 83320247. 0.030838126 0.071699457 -36.803285 40.273428 6750.9775 78236690. 0.027710651 0.073673317 -36.878348 40.123898 6753.0650 76130297. 0.024695198 0.073187743 -36.943879 39.997516 6755.1525 75452577. 0.022612907 0.074538473 -37.009423 39.871109 6757.2400 72959370. 0.019939473 0.076011667 -37.085770 39.723872 6759.3275 69544633. 0.020129813 0.075898988 -37.162227 39.576421 6761.4150 68015851. 0.020032736 0.078002512 -37.238682 39.428973 6763.5025 63118553. 0.012391100 0.077968130 -37.315132 39.281534 6765.5900 58044290. 0.024345237 0.079638898 -37.391572 39.134114 6767.6775 50791337. 0.047396642 0.081217160 -37.460260 38.997155