# # 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 = 46.092849 km # Date (UTC) = 2016-12-08T10:09:35.944 # Date (julian) = 2457730.92333268 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6509.5605 6.1507239e+10 0.095668419 0.035166146 104.55648 25.525407 6512.0628 5.4216712e+10 0.10764626 0.035920721 104.61043 25.405999 6514.5652 4.7880464e+10 0.11981269 0.036675295 104.66716 25.283808 6517.0675 4.2529460e+10 0.13223740 0.037429870 104.72359 25.161916 6519.5698 3.7882822e+10 0.14490599 0.038184445 104.77596 25.044088 6522.0722 3.3861512e+10 0.15763073 0.038936155 104.82833 24.926260 6524.5745 3.0355761e+10 0.16410147 0.039631067 104.88069 24.805042 6527.0769 2.7159905e+10 0.16939047 0.040772285 104.93306 24.682851 6529.5792 2.4329440e+10 0.17298164 0.043158435 104.98543 24.562771 6532.0816 2.1768927e+10 0.17636265 0.046752330 105.03781 24.444928 6534.5839 1.9499650e+10 0.17746817 0.048107899 105.09018 24.326240 6537.0863 1.7550886e+10 0.17779872 0.048725891 105.14255 24.204048 6539.5886 1.5784451e+10 0.17773331 0.050356108 105.19492 24.081857 6542.0909 1.4127536e+10 0.17628962 0.051036763 105.25320 23.950305 6544.5933 1.2561278e+10 0.17480660 0.052125629 105.31211 23.817746 6547.0956 1.1167504e+10 0.17294046 0.053323729 105.36536 23.697947 6549.5980 1.0021086e+10 0.17026992 0.054575658 105.41773 23.580121 6552.1003 9.0775223e+09 0.16693875 0.055561518 105.47010 23.459777 6554.6027 8.2469443e+09 0.16247933 0.054845027 105.52247 23.337569 6557.1050 7.5216835e+09 0.15818312 0.053800294 105.57360 23.216602 6559.6073 6.8798523e+09 0.15395434 0.052318629 105.62161 23.098775 6562.1097 6.3016853e+09 0.15039959 0.050775534 105.66961 22.980948 6564.6120 5.7971902e+09 0.14702401 0.048494226 105.72195 22.863120 6567.1144 5.3285113e+09 0.14444155 0.046520483 105.77431 22.745292 6569.6167 4.9162358e+09 0.14216368 0.044892563 105.82668 22.624409 6572.1191 4.5590528e+09 0.14004307 0.044161974 105.87905 22.502218 6574.6214 4.2424330e+09 0.13723675 0.042556548 105.92964 22.381805 6577.1237 3.9623356e+09 0.13431563 0.040025999 105.97764 22.263962 6579.6261 3.6959965e+09 0.13096590 0.036726309 106.02636 22.144385 6582.1284 3.4199880e+09 0.12816694 0.035258845 106.08036 22.011827 6584.6308 3.1430201e+09 0.12555997 0.034171904 106.13424 21.880462 6587.1331 2.8951989e+09 0.12303470 0.033187863 106.18661 21.762635 6589.6355 2.6844694e+09 0.12031867 0.031785280 106.23897 21.644808 6592.1378 2.5071281e+09 0.11692287 0.027939677 106.28790 21.526981 6594.6401 2.3533625e+09 0.11348339 0.025821113 106.33590 21.409154 6597.1425 2.2084187e+09 0.10977847 0.025677762 106.38391 21.291326 6599.6448 2.0774311e+09 0.10738949 0.024968514 106.43191 21.173499 6602.1472 1.9555727e+09 0.10594087 0.027391038 106.47991 21.055668 6604.6495 1.8402591e+09 0.10365895 0.026456940 106.52792 20.937825 6607.1519 1.7253369e+09 0.10133492 0.025407121 106.57594 20.819982 6609.6542 1.6039811e+09 0.097167217 0.023900262 106.62943 20.688671 6612.1566 1.4870764e+09 0.094148349 0.024203783 106.68344 20.556113 6614.6589 1.3781363e+09 0.093092570 0.023486540 106.73217 20.436495 6617.1612 1.2817877e+09 0.092052003 0.023492707 106.78018 20.318668 6619.6636 1.1984676e+09 0.091799177 0.024686025 106.82818 20.200841 6622.1659 1.1220867e+09 0.090905457 0.024713829 106.87618 20.083013 6624.6683 1.0504986e+09 0.089473138 0.025220029 106.92419 19.965181 6627.1706 9.9452903e+08 0.087629409 0.025382714 106.97220 19.847338 6629.6730 9.3658157e+08 0.086640093 0.025987433 107.02024 19.729414 6632.1753 8.7571654e+08 0.085024714 0.026053365 107.07423 19.596874 6634.6776 8.1923575e+08 0.083703047 0.026376273 107.12824 19.464316 6637.1800 7.6319969e+08 0.082326731 0.026073261 107.17222 19.350231 6639.6823 7.1727617e+08 0.081916306 0.025384196 107.21586 19.236769 6642.1847 6.7696711e+08 0.082231024 0.025159253 107.26245 19.120356 6644.6870 6.3661107e+08 0.081217959 0.025417857 107.31045 19.002528 6647.1894 6.0201203e+08 0.079953117 0.026537477 107.35887 18.879037 6649.6917 5.6910832e+08 0.078908330 0.026680214 107.40797 18.746479 6652.1940 5.3383788e+08 0.078366089 0.027303910 107.45669 18.619036 6654.6964 5.0127000e+08 0.077314489 0.027739559 107.50470 18.501193 6657.1987 4.7100456e+08 0.075165519 0.029131631 107.55277 18.382796 6659.7011 4.4119388e+08 0.073509253 0.031688354 107.60187 18.255148 6662.2034 4.1460954e+08 0.071814941 0.032930143 107.65094 18.127693 6664.7058 3.8910324e+08 0.070756898 0.029623745 107.69895 18.009865 6667.2081 3.6743469e+08 0.070399168 0.027179897 107.74695 17.892038 6669.7104 3.5112185e+08 0.069582179 0.027626025 107.79178 17.777388 6672.2128 3.3595674e+08 0.069600225 0.027002936 107.83541 17.663925 6674.7151 3.2220010e+08 0.068543586 0.029558052 107.88144 17.542124 6677.2175 3.0292984e+08 0.066503354 0.032049054 107.93053 17.409567 6679.7198 2.8514006e+08 0.066678289 0.029672945 107.97919 17.282897 6682.2222 2.7075031e+08 0.067815299 0.030594283 108.02719 17.165070 6684.7245 2.5680172e+08 0.068105062 0.032690857 108.07532 17.046177 6687.2268 2.4689694e+08 0.066384304 0.034216384 108.12442 16.918509 6689.7292 2.3300830e+08 0.063931283 0.033359634 108.17313 16.791860 6692.2315 2.1819335e+08 0.062961778 0.032496461 108.21677 16.678397 6694.7339 2.0830732e+08 0.062288160 0.030232457 108.26041 16.564935 6697.2362 1.9561968e+08 0.061840070 0.030121160 108.30831 16.436573 6699.7386 1.8388795e+08 0.060342018 0.030908948 108.35740 16.304015 6702.2409 1.7184184e+08 0.058720256 0.033069097 108.40650 16.175107 6704.7433 1.6131464e+08 0.059179310 0.036542529 108.45559 16.047459 6707.2456 1.5409567e+08 0.058855726 0.040151645 108.50083 15.926749 6709.7479 1.4996823e+08 0.057860202 0.040656818 108.54447 15.808921 6712.2503 1.4377142e+08 0.055497360 0.042294648 108.59038 15.687017 6714.7526 1.3668281e+08 0.053205470 0.047359991 108.63947 15.559369 6717.2550 1.2927859e+08 0.050895541 0.049858497 108.68857 15.431713 6719.7573 1.2212570e+08 0.049078217 0.050650338 108.73767 15.304046 6722.2597 1.1273777e+08 0.049070971 0.050284203 108.78491 15.181233 6724.7620 1.0290572e+08 0.045202815 0.043563490 108.82855 15.067769 6727.2643 94509248. 0.043093863 0.040608208 108.87222 14.953348 6729.7667 89070912. 0.042274431 0.040534413 108.91640 14.820790 6732.2690 86239560. 0.040554818 0.043789736 108.96065 14.688297 6734.7714 80228000. 0.040378847 0.049307188 109.00975 14.560649 6737.2737 80065002. 0.042422526 0.055007489 109.05884 14.433000 6739.7761 73580236. 0.042824619 0.063776299 109.10794 14.305352 6742.2784 70093156. 0.040278571 0.069289127 109.15704 14.177703 6744.7807 65613942. 0.035904667 0.078397298 109.20152 14.050055 6747.2831 58864741. 0.031280030 0.067263705 109.24571 13.922407 6749.7854 59696402. 0.029577432 0.072062881 109.29432 13.794758 6752.2878 55874628. 0.026329789 0.073801468 109.34342 13.667110 6754.7901 54558208. 0.024789238 0.074942864 109.38402 13.551733 6757.2925 52221460. 0.022242186 0.075852517 109.42330 13.438255 6759.7948 45462427. 0.023150680 0.076011754 109.46822 13.316632 6762.2971 45010648. 0.027276104 0.077571522 109.51732 13.188983 6764.7995 45512145. 0.030416306 0.079521587 109.56377 13.061334 6767.3018 48498069. 0.029788785 0.081637790 109.60795 12.933686 6769.8042 50902733. 0.023985853 0.086404743 109.65811 12.796898 6772.3065 45901840. 0.017381158 0.092474026 109.71423 12.651011 6774.8089 42393536. 0.00099797935 0.098543309 109.76177 12.518236 6777.3112 41294026. 0.0058921895 0.10461259 109.80595 12.390588 6779.8135 41715087. 0.022411082 0.11068187 109.85348 12.262940