# # 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 = 52.958462 km # Date (UTC) = 2015-12-22T10:45:19.343 # Date (julian) = 2457378.94814055 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6496.3538 5.2406503e+10 0.027419033 0.031183710 95.403157 28.217285 6498.6570 4.8173996e+10 0.035321502 0.031878238 95.455787 28.108421 6500.9602 4.4204175e+10 0.043479250 0.032572767 95.512020 27.995953 6503.2635 4.0778765e+10 0.052046771 0.033267295 95.568254 27.883485 6505.5667 3.7735356e+10 0.061093953 0.033961823 95.622025 27.773481 6507.8699 3.5201263e+10 0.070823487 0.034656351 95.674244 27.665030 6510.1731 3.2783285e+10 0.081168542 0.035350880 95.726961 27.556577 6512.4763 3.0575278e+10 0.092239866 0.036045408 95.783202 27.448111 6514.7795 2.8471258e+10 0.10397822 0.036739936 95.839443 27.339646 6517.0827 2.6481072e+10 0.11639249 0.037434464 95.893131 27.231190 6519.3860 2.4624618e+10 0.12946741 0.038128992 95.945347 27.122739 6521.6892 2.2827527e+10 0.14313057 0.038823521 95.997563 27.014289 6523.9924 2.1160149e+10 0.15155385 0.039425072 96.049782 26.905838 6526.2956 1.9582873e+10 0.15870893 0.039977986 96.102001 26.797387 6528.5988 1.8145731e+10 0.16562307 0.041917522 96.154218 26.688935 6530.9020 1.6744126e+10 0.17088125 0.045091518 96.206435 26.580484 6533.2052 1.5484261e+10 0.17618210 0.047606808 96.257786 26.473828 6535.5085 1.4405685e+10 0.17792540 0.048003731 96.304786 26.376211 6537.8117 1.3522659e+10 0.17901034 0.049067892 96.351785 26.278595 6540.1149 1.2725684e+10 0.17865488 0.050908376 96.399265 26.176648 6542.4181 1.1889102e+10 0.17576365 0.051160972 96.447467 26.068198 6544.7213 1.1062191e+10 0.17346566 0.052229491 96.495668 25.959747 6547.0245 1.0260488e+10 0.17108718 0.053296692 96.547523 25.851296 6549.3277 9.5243332e+09 0.16851864 0.054300276 96.599739 25.742845 6551.6310 8.8311710e+09 0.16664808 0.055457227 96.651960 25.634388 6553.9342 8.1828152e+09 0.16413211 0.054865471 96.704186 25.525922 6556.2374 7.5891069e+09 0.16177969 0.053978225 96.756412 25.417456 6558.5406 7.0562651e+09 0.15939758 0.052778646 96.804887 25.309004 6560.8438 6.5764859e+09 0.15631179 0.051513502 96.853086 25.200553 6563.1470 6.1437665e+09 0.15363969 0.049758288 96.901285 25.092103 6565.4502 5.7500715e+09 0.15092847 0.047807139 96.949487 24.983652 6567.7535 5.3769873e+09 0.14874534 0.045980119 96.997689 24.875201 6570.0567 5.0356271e+09 0.14686453 0.044894033 97.049712 24.766750 6572.3599 4.7342520e+09 0.14453687 0.044024057 97.101928 24.658299 6574.6631 4.4585140e+09 0.14174793 0.042536519 97.152290 24.549842 6576.9663 4.2179716e+09 0.13871021 0.040259143 97.200499 24.441376 6579.2695 3.9852082e+09 0.13502901 0.036922325 97.248707 24.332910 6581.5727 3.7353687e+09 0.13195781 0.035423174 97.302773 24.215662 6583.8760 3.4818114e+09 0.12892460 0.034578295 97.357000 24.098171 6586.1792 3.2288656e+09 0.12589772 0.033168980 97.406644 23.987553 6588.4824 3.0169983e+09 0.12321787 0.033218835 97.454843 23.879101 6590.7856 2.8410024e+09 0.11994209 0.029600722 97.503042 23.770650 6593.0888 2.6831813e+09 0.11732549 0.027019647 97.551244 23.662200 6595.3920 2.5374786e+09 0.11469695 0.025664226 97.599445 23.553750 6597.6952 2.4009384e+09 0.11252648 0.025503334 97.647647 23.445299 6599.9985 2.2719891e+09 0.11179248 0.024989782 97.695848 23.336848 6602.3017 2.1554039e+09 0.11125738 0.027259195 97.744051 23.229563 6604.6049 2.0461088e+09 0.11019651 0.026430440 97.792256 23.125115 6606.9081 1.9446913e+09 0.10928609 0.025872128 97.840460 23.020667 6609.2113 1.8499111e+09 0.10617166 0.023768703 97.888663 22.913007 6611.5145 1.7536502e+09 0.10345878 0.024630335 97.936864 22.804556 6613.8177 1.6621651e+09 0.10246810 0.023873624 97.983810 22.697360 6616.1210 1.5712257e+09 0.10095281 0.023301284 98.027994 22.592926 6618.4242 1.4910112e+09 0.10031458 0.024091100 98.072178 22.488492 6620.7274 1.4221371e+09 0.099428140 0.025001599 98.119666 22.380753 6623.0306 1.3589910e+09 0.097811036 0.024503165 98.167864 22.272302 6625.3338 1.2940596e+09 0.096215901 0.025795952 98.214727 22.163846 6627.6370 1.2307330e+09 0.094132976 0.025562887 98.258916 22.055381 6629.9402 1.1743844e+09 0.092643574 0.025939105 98.303106 21.946916 6632.2435 1.1228412e+09 0.090593205 0.026061539 98.350682 21.841853 6634.5467 1.0766596e+09 0.088796527 0.026366720 98.398883 21.737419 6636.8499 1.0241272e+09 0.086963875 0.026219704 98.447619 21.626755 6639.1531 9.6662868e+08 0.085740911 0.025573351 98.497327 21.504745 6641.4563 9.1635643e+08 0.086205506 0.025149850 98.546822 21.385221 6643.7595 8.6586900e+08 0.085415764 0.025307299 98.595023 21.280787 6646.0628 8.1880305e+08 0.084563021 0.025952629 98.643225 21.176353 6648.3660 7.7738293e+08 0.083710456 0.027209263 98.688809 21.071910 6650.6692 7.3195223e+08 0.083348298 0.026408431 98.732996 20.967462 6652.9724 6.9846363e+08 0.083107893 0.027518066 98.777182 20.862363 6655.2756 6.6921841e+08 0.081814580 0.027724098 98.821366 20.753912 6657.5788 6.3983808e+08 0.080097135 0.029572528 98.865550 20.645462 6659.8820 6.1023230e+08 0.078708890 0.031650604 98.913451 20.530928 6662.1853 5.7725235e+08 0.077286934 0.032940334 98.963159 20.413437 6664.4885 5.4535556e+08 0.076321836 0.030418809 99.010326 20.301953 6666.7917 5.1337788e+08 0.076249485 0.027062864 99.054510 20.197519 6669.0949 4.8695002e+08 0.075066019 0.028258238 99.098694 20.093084 6671.3981 4.6356177e+08 0.075163790 0.026871022 99.142878 19.984751 6673.7013 4.4603192e+08 0.074445089 0.028508100 99.187062 19.876300 6676.0045 4.3070262e+08 0.072054769 0.031716650 99.233905 19.763494 6678.3078 4.0850722e+08 0.070997727 0.030730775 99.283621 19.645986 6680.6110 3.8529009e+08 0.071552692 0.029573350 99.331852 19.531985 6682.9142 3.6573836e+08 0.072232213 0.031123013 99.376036 19.427551 6685.2174 3.5006167e+08 0.071941695 0.032934463 99.420220 19.323117 6687.5206 3.4084478e+08 0.069719463 0.034052550 99.464404 19.218683 6689.8238 3.2847188e+08 0.067327245 0.033274449 99.508588 19.114249 6692.1270 3.1412890e+08 0.066270423 0.032617804 99.553062 19.006041 6694.4303 2.9649654e+08 0.065610286 0.030658002 99.598250 18.888550 6696.7335 2.8147336e+08 0.065485298 0.029980527 99.643362 18.772053 6699.0367 2.7197381e+08 0.064348523 0.031556583 99.687546 18.667619 6701.3399 2.6085985e+08 0.062677932 0.031908174 99.731730 18.563185 6703.6431 2.5388676e+08 0.062780387 0.035284508 99.779153 18.451093 6705.9463 2.3792957e+08 0.063074142 0.038350985 99.828861 18.333603 6708.2495 2.2733746e+08 0.062856211 0.040315320 99.875007 18.220984 6710.5528 2.1907790e+08 0.061534489 0.040604690 99.915178 18.116535 6712.8560 2.0764840e+08 0.059617026 0.043419211 99.955350 18.012087 6715.1592 2.0442056e+08 0.057601229 0.047541399 100.00395 17.896105 6717.4624 1.9570902e+08 0.055599362 0.049845667 100.05366 17.778615 6719.7656 1.9054038e+08 0.054099515 0.050642450 100.10034 17.661125 6722.0688 1.8214861e+08 0.054371580 0.050520114 100.14552 17.543634 6724.3720 1.7188442e+08 0.051631213 0.046819861 100.18841 17.432128 6726.6753 1.6326492e+08 0.048682543 0.040957458 100.22858 17.327694 6728.9785 1.5548640e+08 0.048429000 0.041014915 100.26874 17.223260 6731.2817 1.4941299e+08 0.046662339 0.042310633 100.31815 17.106177 6733.5849 1.4313382e+08 0.045583287 0.047099906 100.36786 16.988685 6735.8881 1.3830970e+08 0.046997541 0.050236233 100.41415 16.871195 6738.1913 1.3187051e+08 0.048498698 0.058374451 100.45935 16.753706 6740.4945 1.2405225e+08 0.048165347 0.064895206 100.50181 16.643296 6742.7978 1.1737568e+08 0.045119047 0.070554642 100.54198 16.538848 6745.1010 1.1153917e+08 0.041787064 0.078609335 100.58242 16.433701 6747.4042 1.0642803e+08 0.037583997 0.067222015 100.62761 16.316210 6749.7074 1.0262586e+08 0.036111826 0.072084246 100.67280 16.198720 6752.0106 96921314. 0.032974464 0.074122191 100.71799 16.085028 6754.3138 95819329. 0.031836621 0.075708791 100.76318 15.972057 6756.6170 91795198. 0.029285964 0.075754659 100.80836 15.856248 6758.9203 87256878. 0.030064088 0.075651335 100.85355 15.738757 6761.2235 83476786. 0.031402019 0.077986688 100.89874 15.621266 6763.5267 76675725. 0.036853982 0.078041808 100.94393 15.503776 6765.8299 73694839. 0.039197692 0.079682695 100.98912 15.386285 6768.1331 74111082. 0.036175902 0.081335017 101.03431 15.268795 6770.4363 75825462. 0.031307605 0.087937999 101.07950 15.151305 6772.7395 78538743. 0.027007494 0.093524307 101.12469 15.038283 6775.0428 73900027. 0.023067822 0.099110615 101.16988 14.925311 6777.3460 64673501. 0.019424849 0.10469692 101.21507 14.808820 6779.6492 58570324. 0.015683019 0.11028323 101.26026 14.691313 6781.9524 51813319. 0.012097955 0.11586954 101.30545 14.576360 6784.2556 49459088. 0.0081947967 0.12145585 101.35064 14.463388 6786.5588 49929138. 0.0040396869 0.12704215 101.39583 14.348832 6788.8620 47592009. 0.00020120168 0.13262846 101.44102 14.231342 6791.1653 48607090. -0.0039277733 0.13821477 101.48621 14.114473 6793.4685 44862997. -0.0074709496 0.14380108 101.53140 14.001501 6795.7717 43124596. -0.011099057 0.14938738 101.57659 13.888530 6798.0749 44422602. -0.014976515 0.15497369 101.61760 13.771380 6800.3781 45303664. -0.018636727 0.16056000 101.65827 13.653890 6802.6813 48148437. -0.022310299 0.16614631 101.70675 13.528129 6804.9846 46998894. -0.024880177 0.17173262 101.75839 13.399015 6807.2878 45181893. -0.026182346 0.17731892 101.80153 13.278912 6809.5910 41225820. -0.013067154 0.18290523 101.84220 13.161422 6811.8942 42105071. -0.031305379 0.18849154 101.88541 13.046473 6814.1974 44162861. -0.062943972 0.19407785 101.93060 12.933501