# # 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 = 50.873996 km # Date (UTC) = 2012-01-22T10:03:03.947 # Date (julian) = 2455948.91879568 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6489.2179 3.0547655e+11 0.014128775 0.029031895 -30.855028 52.442566 6491.4834 2.6343259e+11 0.022050468 0.029715054 -31.015052 52.284949 6493.7489 2.2222230e+11 0.029709440 0.030398213 -31.175077 52.124924 6496.0144 1.8780865e+11 0.036963553 0.031081372 -31.329727 51.970273 6498.2799 1.5838015e+11 0.043884004 0.031764531 -31.483825 51.814874 6500.5455 1.3388855e+11 0.050597257 0.032447690 -31.637921 51.654852 6502.8110 1.1349946e+11 0.057269686 0.033130849 -31.788847 51.494846 6505.0765 9.7031438e+10 0.064129943 0.033814008 -31.936989 51.334853 6507.3420 8.4040414e+10 0.071498950 0.034497167 -32.090162 51.179839 6509.6075 7.2951474e+10 0.079530912 0.035180326 -32.243327 51.024807 6511.8730 6.3836450e+10 0.088525766 0.035863485 -32.391497 50.864783 6514.1385 5.6805599e+10 0.098928333 0.036546644 -32.527325 50.715509 6516.4040 5.1291644e+10 0.11091607 0.037229803 -32.649244 50.578349 6518.6695 4.6622440e+10 0.12439589 0.037912962 -32.781359 50.429720 6520.9351 4.2139416e+10 0.13902244 0.038596121 -32.923604 50.269698 6523.2006 3.7473332e+10 0.15099253 0.039228824 -33.065846 50.114500 6525.4661 3.3346738e+10 0.16038638 0.039729022 -33.205504 49.962556 6527.7316 3.0118598e+10 0.16927123 0.041247618 -33.327424 49.825396 6529.9971 2.7579161e+10 0.17652391 0.043824089 -33.451625 49.684614 6532.2626 2.5416431e+10 0.18042519 0.046903582 -33.587915 49.524621 6534.5281 2.3245945e+10 0.18106517 0.048092296 -33.724217 49.364613 6536.7936 2.1159162e+10 0.17968861 0.048500593 -33.860533 49.204589 6539.0592 1.9461160e+10 0.17798488 0.049715233 -33.977602 49.062488 6541.3247 1.8012151e+10 0.17595719 0.051221242 -34.089362 48.925330 6543.5902 1.6649971e+10 0.17352882 0.051536788 -34.221144 48.769528 6545.8557 1.5381894e+10 0.17098588 0.052463233 -34.354315 48.612433 6548.1212 1.4199469e+10 0.16936821 0.053703841 -34.466075 48.475273 6550.3867 1.3131293e+10 0.16749506 0.055082189 -34.580808 48.334465 6552.6522 1.2119694e+10 0.16561047 0.055422602 -34.711197 48.174440 6554.9177 1.1163715e+10 0.16351188 0.054851639 -34.830388 48.025215 6557.1832 1.0304013e+10 0.16098560 0.053751247 -34.937069 47.888055 6559.4488 9.5441739e+09 0.15807603 0.052336529 -35.052709 47.739376 6561.7143 8.8313814e+09 0.15512049 0.051020704 -35.177171 47.579352 6563.9798 8.1577787e+09 0.15184668 0.048794984 -35.287113 47.437998 6566.2453 7.5644526e+09 0.14932670 0.047044122 -35.393792 47.300837 6568.5108 7.0169552e+09 0.14713327 0.045302110 -35.515553 47.144287 6570.7763 6.5056234e+09 0.14501287 0.044595932 -35.636339 46.987940 6573.0418 6.0606996e+09 0.14257469 0.043623914 -35.737939 46.850782 6575.3073 5.6887094e+09 0.13954920 0.042066348 -35.843931 46.709233 6577.5729 5.3564462e+09 0.13608306 0.039320559 -35.968369 46.549240 6579.8384 5.0414658e+09 0.13255187 0.036609611 -36.081280 46.400772 6582.1039 4.7434111e+09 0.12955227 0.035265527 -36.182880 46.263612 6584.3694 4.5075464e+09 0.12696108 0.034314291 -36.281755 46.126452 6586.6349 4.2999110e+09 0.12489888 0.033163089 -36.378275 45.989292 6588.9004 4.0570077e+09 0.12310648 0.033079235 -36.487293 45.839152 6591.1659 3.8065384e+09 0.12074887 0.029014685 -36.605830 45.679128 6593.4314 3.5762168e+09 0.11864152 0.026701117 -36.704983 45.539235 6595.6969 3.3606470e+09 0.11594608 0.025695846 -36.801503 45.402075 6597.9625 3.1441687e+09 0.11395145 0.025419012 -36.912696 45.244064 6600.2280 2.9175984e+09 0.11336275 0.025458539 -37.021689 45.089177 6602.4935 2.6938300e+09 0.11281186 0.027095516 -37.118208 44.952017 6604.7590 2.5086284e+09 0.11187967 0.026521942 -37.213426 44.813556 6607.0245 2.3684540e+09 0.11067921 0.025658607 -37.304866 44.671317 6609.2900 2.2444617e+09 0.10738493 0.023792080 -37.397767 44.530540 6611.5555 2.1388109e+09 0.10440952 0.024604193 -37.494289 44.393379 6613.8210 2.0346805e+09 0.10312486 0.023874832 -37.594053 44.248921 6616.0866 1.9225259e+09 0.10134860 0.023295883 -37.700736 44.088897 6618.3521 1.8163151e+09 0.10048423 0.024036646 -37.797785 43.943322 6620.6176 1.7212764e+09 0.099392329 0.024966211 -37.889223 43.806162 6622.8831 1.6481715e+09 0.097507656 0.024522944 -37.977293 43.669004 6625.1486 1.5782259e+09 0.095564226 0.025574927 -38.063653 43.531845 6627.4141 1.5015420e+09 0.093093046 0.025476775 -38.164137 43.378797 6629.6796 1.4178870e+09 0.091542412 0.025986227 -38.270646 43.218968 6631.9451 1.3357727e+09 0.089605306 0.026026772 -38.357007 43.081812 6634.2106 1.2625309e+09 0.088180612 0.026342208 -38.443352 42.944675 6636.4762 1.1963124e+09 0.086930506 0.026364841 -38.529712 42.807515 6638.7417 1.1433358e+09 0.086044120 0.025639330 -38.616073 42.670356 6641.0072 1.0958833e+09 0.086750849 0.025148325 -38.702432 42.533195 6643.2727 1.0497757e+09 0.086347089 0.025233792 -38.790258 42.393707 6645.5382 9.9968082e+08 0.085420622 0.025703813 -38.891015 42.233682 6647.8037 9.4536298e+08 0.084504780 0.026860940 -38.983697 42.081031 6650.0692 8.9576325e+08 0.083846288 0.026271085 -39.064976 41.938793 6652.3347 8.5315595e+08 0.083364138 0.027342621 -39.148522 41.798819 6654.6003 8.1815636e+08 0.082412731 0.027780513 -39.234880 41.661660 6656.8658 7.8492359e+08 0.080436299 0.028783292 -39.318814 41.524500 6659.1313 7.5258406e+08 0.078788560 0.031807215 -39.400093 41.387340 6661.3968 7.1531498e+08 0.077412392 0.032737041 -39.488270 41.238541 6663.6623 6.7678879e+08 0.076051048 0.032299674 -39.583100 41.078516 6665.9278 6.3903911e+08 0.075935961 0.027026882 -39.666794 40.937281 6668.1933 6.0820399e+08 0.075063560 0.027641850 -39.748074 40.800122 6670.4588 5.8202843e+08 0.074539893 0.027116063 -39.825019 40.662962 6672.7243 5.5408500e+08 0.074143395 0.027299442 -39.901220 40.525802 6674.9899 5.3224902e+08 0.072556626 0.029789800 -39.981914 40.388644 6677.2554 5.0932728e+08 0.070323494 0.031995186 -40.063194 40.251486 6679.5209 4.8686020e+08 0.070016773 0.029837340 -40.151459 40.093377 6681.7864 4.6341085e+08 0.070971251 0.030260665 -40.237452 39.938589 6684.0519 4.3740108e+08 0.071403083 0.032656726 -40.313651 39.801429 6686.3174 4.1649992e+08 0.070796610 0.033945761 -40.389850 39.664270 6688.5829 3.9884956e+08 0.068238387 0.033919750 -40.466051 39.527109 6690.8484 3.8376411e+08 0.067101877 0.033018632 -40.542251 39.389949 6693.1139 3.6832156e+08 0.066449587 0.031564997 -40.618450 39.252789 6695.3795 3.5305971e+08 0.066148435 0.029789771 -40.694649 39.115629 6697.6450 3.4083164e+08 0.065648143 0.030172888 -40.770849 38.978469 6699.9105 3.2497683e+08 0.064346345 0.030750315 -40.851559 38.833193 6702.1760 3.0816486e+08 0.062990392 0.033017264 -40.940462 38.673169 6704.4415 2.9220909e+08 0.063626947 0.036394357 -41.017482 38.528428 6706.7070 2.7546421e+08 0.063718027 0.039676917 -41.088589 38.391292 6708.9725 2.6269711e+08 0.063374617 0.041102631 -41.159706 38.254140 6711.2380 2.5312257e+08 0.061720208 0.040963061 -41.230825 38.116981 6713.5036 2.4407192e+08 0.059700013 0.045507874 -41.305656 37.979822 6715.7691 2.3647378e+08 0.057896706 0.048165168 -41.381857 37.842662 6718.0346 2.2830364e+08 0.055853287 0.049866267 -41.463218 37.688082 6720.3001 2.1815168e+08 0.055044312 0.050384996 -41.544929 37.529765 6722.5656 2.0646994e+08 0.054803541 0.049905973 -41.610968 37.392605 6724.8311 1.9609781e+08 0.051013283 0.042986331 -41.677546 37.255445 6727.0966 1.8863356e+08 0.049003571 0.040831654 -41.748667 37.118285 6729.3621 1.8061496e+08 0.048474502 0.040804054 -41.821419 36.977979 6731.6276 1.7160956e+08 0.046675137 0.042999161 -41.904394 36.817955 6733.8932 1.6200159e+08 0.045589308 0.048773535 -41.979743 36.668228 6736.1587 1.5049296e+08 0.047432128 0.050954875 -42.045784 36.531067 6738.4242 1.4198515e+08 0.048626587 0.059656417 -42.114272 36.393907 6740.6897 1.3597977e+08 0.047790071 0.065228588 -42.185391 36.256747 6742.9552 1.2978501e+08 0.044185635 0.070938294 -42.259553 36.107850 6745.2207 1.2231990e+08 0.040705890 0.078659675 -42.336600 35.947826 6747.4862 1.1376624e+08 0.036057542 0.067193771 -42.404555 35.806692 6749.7517 1.0447070e+08 0.033911391 0.072072105 -42.470595 35.669534 6752.0173 1.0007837e+08 0.030084782 0.074114511 -42.536635 35.536730 6754.2828 99140488. 0.028257541 0.075758749 -42.602675 35.404650 6756.5483 97483390. 0.024905724 0.075577707 -42.678503 35.247725 6758.8138 94438546. 0.024641581 0.075426187 -42.753330 35.092316 6761.0793 88611257. 0.024518789 0.077974777 -42.819369 34.955155 6763.3448 83659900. 0.029018588 0.077487897 -42.886591 34.812667 6765.6103 79422810. 0.030346566 0.079642610 -42.957700 34.652677 6767.8758 77793487. 0.027228722 0.080995057 -43.026042 34.505147 6770.1413 75819987. 0.021518603 0.087222530 -43.092080 34.367987 6772.4069 73501183. 0.016488209 0.092717392 -43.155188 34.233760 6774.6724 72784816. 0.011596479 0.098212254 -43.216149 34.101679 6776.9379 73667594. 0.0069006606 0.10370712 -43.283295 33.952588 6779.2034 71944286. 0.0019135824 0.10920198 -43.354416 33.792564 6781.4689 68416470. -0.0033901944 0.11469684 -43.420856 33.653608 6783.7344 64315923. -0.0089674883 0.12019170 -43.486896 33.516448 6785.9999 61373977. -0.014572976 0.12568656 -43.557779 33.357501 6788.2654 63489206. -0.019250526 0.13118143 -43.626199 33.204904 6790.5310 64811219. -0.024443995 0.13667629 -43.687159 33.072823 6792.7965 63774463. -0.030959748 0.14217115 -43.751138 32.932437 6795.0620 62397255. -0.039233228 0.14766601 -43.822259 32.772413 6797.3275 59151111. -0.053312837 0.15316087 -43.884084 32.626335 6799.5930 58141183. -0.11204668 0.15865573 -43.939964 32.489176 6801.8585 55309513. -0.070502892 0.16415060 -44.005622 32.337349 6804.1240 48976170. 0.035017301 0.16964546 -44.076745 32.177325