# # 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 = 34.047828 km # Date (UTC) = 2016-12-14T09:30:03.608 # Date (julian) = 2457736.89587509 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6507.8580 7.1232729e+10 0.085305159 0.034652769 -22.263101 50.910311 6509.6962 6.2510575e+10 0.093912394 0.035207083 -22.352863 50.834689 6511.5345 5.6040474e+10 0.10288060 0.035761397 -22.442625 50.757750 6513.3727 5.0272552e+10 0.11201751 0.036315711 -22.532387 50.680810 6515.2109 4.5342882e+10 0.12136612 0.036870025 -22.620650 50.603866 6517.0492 4.1001843e+10 0.13091354 0.037424339 -22.707218 50.526918 6518.8874 3.6955043e+10 0.14057355 0.037978653 -22.793786 50.449969 6520.7256 3.3637137e+10 0.15050295 0.038532967 -22.877315 50.375722 6522.5639 3.0762733e+10 0.15908757 0.039064904 -22.955215 50.306477 6524.4021 2.8400240e+10 0.16443175 0.039569804 -23.033115 50.237232 6526.2403 2.6383068e+10 0.16827866 0.039920036 -23.111014 50.167988 6528.0786 2.4319794e+10 0.17285366 0.041504800 -23.196572 50.094772 6529.9168 2.2311024e+10 0.17664820 0.043696143 -23.283128 50.021039 6531.7550 2.0388358e+10 0.17885394 0.046327616 -23.369684 49.947306 6533.5932 1.8682790e+10 0.18023364 0.047771700 -23.453787 49.871119 6535.4315 1.7105757e+10 0.18053761 0.048037122 -23.537138 49.794180 6537.2697 1.5686912e+10 0.18073431 0.048812384 -23.620488 49.717240 6539.1079 1.4411806e+10 0.17951962 0.049774294 -23.703846 49.640295 6540.9462 1.3253893e+10 0.17782301 0.051301101 -23.787208 49.563346 6542.7844 1.2196635e+10 0.17585448 0.051300043 -23.870570 49.486397 6544.6226 1.1220678e+10 0.17381100 0.052149446 -23.953926 49.409453 6546.4609 1.0320664e+10 0.17139315 0.052843751 -24.037277 49.332514 6548.2991 9.5130857e+09 0.16965540 0.053756969 -24.120627 49.255574 6550.1373 8.7948179e+09 0.16819938 0.055019747 -24.203978 49.178635 6551.9756 8.1278169e+09 0.16633414 0.055578191 -24.287329 49.101697 6553.8138 7.5334038e+09 0.16380856 0.054925980 -24.370680 49.024758 6555.6520 6.9776660e+09 0.16169532 0.054305501 -24.453106 48.947820 6557.4903 6.4534027e+09 0.15968252 0.053558807 -24.533251 48.870880 6559.3285 5.9820333e+09 0.15683290 0.052350103 -24.613396 48.793941 6561.1667 5.5335017e+09 0.15378256 0.051290520 -24.693542 48.716999 6563.0050 5.1407694e+09 0.15121508 0.049922628 -24.773698 48.640051 6564.8432 4.7815261e+09 0.14850133 0.048389462 -24.853853 48.563102 6566.6814 4.4519771e+09 0.14567894 0.046797404 -24.933848 48.486154 6568.5197 4.1519108e+09 0.14309251 0.045293974 -25.010787 48.409214 6570.3579 3.8647045e+09 0.14087559 0.044769259 -25.087726 48.332275 6572.1961 3.6123012e+09 0.13821580 0.044117842 -25.164665 48.255335 6574.0344 3.3693043e+09 0.13481024 0.042838506 -25.244587 48.178396 6575.8726 3.1528758e+09 0.13168065 0.041499231 -25.324732 48.101456 6577.7108 2.9539125e+09 0.12836946 0.039103851 -25.404877 48.024516 6579.5490 2.7723980e+09 0.12453134 0.036768661 -25.482421 47.947578 6581.3873 2.6034864e+09 0.12110624 0.035479335 -25.559360 47.870639 6583.2255 2.4426721e+09 0.11855813 0.034907522 -25.636299 47.793701 6585.0637 2.2950081e+09 0.11643501 0.033919810 -25.711026 47.716755 6586.9020 2.1482134e+09 0.11456673 0.033159636 -25.784769 47.639805 6588.7402 2.0122865e+09 0.11285200 0.033132735 -25.858512 47.562855 6590.5784 1.8844460e+09 0.11080861 0.029986076 -25.929678 47.490321 6592.4167 1.7735742e+09 0.10875362 0.027668810 -25.998922 47.421077 6594.2549 1.6862627e+09 0.10644794 0.026032593 -26.068166 47.351834 6596.0931 1.6090855e+09 0.10374284 0.025726850 -26.137890 47.281767 6597.9314 1.5260537e+09 0.10194950 0.025428823 -26.211624 47.204827 6599.7696 1.4487284e+09 0.10083582 0.024976018 -26.285358 47.127887 6601.6078 1.3692763e+09 0.10022596 0.027331945 -26.359092 47.050948 6603.4461 1.2943954e+09 0.098823326 0.026399204 -26.432834 46.973999 6605.2843 1.2262033e+09 0.098057413 0.026903546 -26.506577 46.897051 6607.1225 1.1475942e+09 0.096632490 0.025465047 -26.580320 46.820102 6608.9608 1.0753798e+09 0.093728619 0.023706969 -26.651269 46.743161 6610.7990 1.0109276e+09 0.090994681 0.024766398 -26.721797 46.666222 6612.6372 9.4873697e+08 0.089641434 0.023844642 -26.792324 46.589282 6614.4755 9.0054185e+08 0.088339335 0.023612921 -26.865254 46.512343 6616.3137 8.5370844e+08 0.086669449 0.023331532 -26.938988 46.435405 6618.1519 8.1010322e+08 0.085845443 0.023885514 -27.012722 46.358467 6619.9902 7.7125823e+08 0.084907552 0.024764822 -27.089990 46.275468 6621.8284 7.2089072e+08 0.083653933 0.024814875 -27.169335 46.188909 6623.6666 6.7302128e+08 0.082092691 0.024738797 -27.248679 46.102350 6625.5048 6.2578099e+08 0.081377702 0.026000040 -27.320473 46.024030 6627.3431 5.8100763e+08 0.080037300 0.025449337 -27.391009 45.947080 6629.1813 5.4962686e+08 0.079408625 0.026076323 -27.461546 45.870130 6631.0195 5.1897082e+08 0.078241261 0.025932751 -27.529709 45.793189 6632.8578 4.9879963e+08 0.077361672 0.026135199 -27.597031 45.716251 6634.6960 4.7801302e+08 0.076263401 0.026377613 -27.664352 45.639312 6636.5342 4.4795658e+08 0.075194212 0.026342285 -27.733659 45.560389 6638.3725 4.2510355e+08 0.074484699 0.025655415 -27.804186 45.480244 6640.2107 3.9838506e+08 0.074806594 0.025244872 -27.874714 45.400099 6642.0489 3.8047123e+08 0.074870038 0.025153699 -27.943640 45.321555 6643.8872 3.6362269e+08 0.073924017 0.025326570 -28.010961 45.244616 6645.7254 3.4635475e+08 0.073055281 0.025791507 -28.078283 45.167676 6647.5636 3.2638711e+08 0.072095176 0.026734535 -28.145608 45.090733 6649.4019 3.0910871e+08 0.071017631 0.027079737 -28.212939 45.013785 6651.2401 2.9320556e+08 0.070428894 0.026668165 -28.280269 44.936836 6653.0783 2.7722559e+08 0.069847193 0.027565653 -28.346759 44.859890 6654.9166 2.6340201e+08 0.068466501 0.027645762 -28.410875 44.782951 6656.7548 2.4446243e+08 0.066414060 0.028685894 -28.474991 44.706011 6658.5930 2.3115604e+08 0.064693088 0.031112819 -28.539562 44.629072 6660.4313 2.1984664e+08 0.063068655 0.032017989 -28.606884 44.552133 6662.2695 2.0965253e+08 0.061334720 0.032893072 -28.674206 44.475194 6664.1077 1.9983038e+08 0.059667315 0.031811944 -28.741453 44.398256 6665.9460 1.9113750e+08 0.059321890 0.026997154 -28.805571 44.321316 6667.7842 1.8161500e+08 0.058288099 0.027391502 -28.869687 44.244377 6669.6224 1.7163821e+08 0.057075723 0.027716438 -28.933803 44.167437 6671.4606 1.6496878e+08 0.056570819 0.026871913 -29.005159 44.081809 6673.2989 1.5399660e+08 0.055533354 0.027906215 -29.077290 43.995250 6675.1371 1.4480641e+08 0.053495870 0.030060977 -29.148375 43.909528 6676.9753 1.3364981e+08 0.050823466 0.032342327 -29.212500 43.829373 6678.8136 1.2534885e+08 0.049594856 0.030392459 -29.276624 43.749217 6680.6518 1.2240986e+08 0.050086487 0.029582169 -29.340703 43.669109 6682.4900 1.2161561e+08 0.050526646 0.030798952 -29.401622 43.592161 6684.3283 1.1592057e+08 0.050029785 0.032670750 -29.462532 43.515223 6686.1665 1.0839705e+08 0.048595340 0.033857959 -29.523442 43.438285 6688.0047 1.0037954e+08 0.045551213 0.033786284 -29.594365 43.352762 6689.8430 91167383. 0.042401417 0.033257218 -29.666497 43.266203 6691.6812 88521764. 0.040990879 0.032840545 -29.737286 43.180795 6693.5194 86288618. 0.039656879 0.031425891 -29.798196 43.103857 6695.3577 89012729. 0.039536741 0.029793775 -29.859106 43.026918 6697.1959 85806136. 0.037702619 0.030116056 -29.920016 42.949980 6699.0341 77208470. 0.033142705 0.031558942 -29.980935 42.873030 6700.8724 62885067. 0.023593545 0.031314772 -30.041853 42.796081 6702.7106 56271616. 0.011524924 0.033444141 -30.102771 42.719131 6704.5488 55322163. -0.034303378 0.036447055 -30.167215 42.633714 6706.3871 55422846. 0.0022451692 0.039120045 -30.232133 42.547157 6710.0635 53560548. 0.092333769 0.040508928 -30.357526 42.381151