# # 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 = 48.718214 km # Date (UTC) = 2014-01-10T09:59:12.797 # Date (julian) = 2456667.91612034 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6503.1906 5.0876734e+10 0.057609759 0.033245316 -30.180854 49.749145 6505.7349 4.7065392e+10 0.067573702 0.034012549 -30.310644 49.622458 6508.2792 4.3550098e+10 0.077876443 0.034779781 -30.440434 49.497660 6510.8235 4.0144813e+10 0.088526404 0.035547014 -30.578160 49.361840 6513.3678 3.6847439e+10 0.099555901 0.036314247 -30.720789 49.219212 6515.9122 3.3700150e+10 0.11100657 0.037081480 -30.847988 49.087692 6518.4565 3.0790303e+10 0.12292740 0.037848712 -30.972786 48.957901 6521.0008 2.8236025e+10 0.13542156 0.038615945 -31.093281 48.832414 6523.5451 2.5783909e+10 0.14394492 0.039314219 -31.213086 48.707617 6526.0894 2.3421440e+10 0.14879453 0.039761854 -31.332907 48.578516 6528.6338 2.1258117e+10 0.15401611 0.041945245 -31.452731 48.448708 6531.1781 1.9320745e+10 0.15762976 0.045487874 -31.572539 48.323188 6533.7224 1.7644718e+10 0.16116530 0.047826584 -31.692345 48.198390 6536.2667 1.6180799e+10 0.16225314 0.048029140 -31.812151 48.069335 6538.8110 1.4851377e+10 0.16440851 0.049551613 -31.931958 47.939545 6541.3554 1.3647207e+10 0.16536316 0.051211290 -32.047524 47.813995 6543.8997 1.2519415e+10 0.16546668 0.051618017 -32.162337 47.689197 6546.4440 1.1494699e+10 0.16536376 0.052829862 -32.277151 47.560176 6548.9883 1.0551914e+10 0.16442184 0.053962790 -32.391965 47.430388 6551.5326 9.7133386e+09 0.16344260 0.055422713 -32.506778 47.304806 6554.0770 8.9770642e+09 0.16124465 0.054833995 -32.621592 47.180008 6556.6213 8.3238649e+09 0.15921182 0.053921787 -32.732215 47.051019 6559.1656 7.7344015e+09 0.15659536 0.052368491 -32.842037 46.921231 6561.7099 7.1721504e+09 0.15407582 0.051022853 -32.956035 46.795616 6564.2542 6.6671187e+09 0.15139390 0.048656380 -33.070849 46.670818 6566.7985 6.1955123e+09 0.14969582 0.046731148 -33.181504 46.541861 6569.3429 5.7723249e+09 0.14814513 0.044874740 -33.291326 46.412070 6571.8872 5.3895029e+09 0.14702444 0.044260967 -33.397018 46.286408 6574.4315 5.0331140e+09 0.14503544 0.042647754 -33.501863 46.161592 6576.9758 4.7086959e+09 0.14311183 0.040248196 -33.610825 46.032663 6579.5201 4.4120198e+09 0.14053884 0.036784550 -33.720647 45.902874 6582.0645 4.1438885e+09 0.13839757 0.035276252 -33.826357 45.773084 6584.6088 3.8950850e+09 0.13620810 0.034183883 -33.931186 45.643293 6587.1531 3.6610421e+09 0.13405178 0.033192291 -34.036016 45.517599 6589.6974 3.4366137e+09 0.13169501 0.031662353 -34.140846 45.392801 6592.2417 3.2320709e+09 0.12859797 0.027838721 -34.245675 45.263925 6594.7861 3.0401135e+09 0.12542649 0.025741013 -34.350505 45.134136 6597.3304 2.8582675e+09 0.12191246 0.025618471 -34.451272 45.004345 6599.8747 2.6898155e+09 0.11985105 0.024982339 -34.551110 44.874555 6602.4190 2.5309660e+09 0.11812119 0.027159058 -34.650949 44.748812 6604.9633 2.3809351e+09 0.11605588 0.026643275 -34.750787 44.624015 6607.5077 2.2399537e+09 0.11359889 0.024704560 -34.850626 44.495186 6610.0520 2.1030413e+09 0.10998765 0.024052643 -34.950465 44.365397 6612.5963 1.9772371e+09 0.10790061 0.023875221 -35.050302 44.239623 6615.1406 1.8581430e+09 0.10693227 0.023255858 -35.150138 44.114825 6617.6849 1.7524176e+09 0.10594538 0.023666338 -35.245989 43.986014 6620.2293 1.6560281e+09 0.10538204 0.024841075 -35.340851 43.856206 6622.7736 1.5671482e+09 0.10395433 0.024552093 -35.439685 43.726412 6625.3179 1.4855570e+09 0.10236345 0.025776948 -35.539524 43.596621 6627.8622 1.4033097e+09 0.10040942 0.025649870 -35.635393 43.470799 6630.4065 1.3300966e+09 0.098704925 0.025929304 -35.730239 43.346001 6632.9509 1.2591735e+09 0.096913391 0.026146360 -35.825084 43.217253 6635.4952 1.1891923e+09 0.095013547 0.026474046 -35.919930 43.087464 6638.0395 1.1238920e+09 0.093481004 0.025669922 -36.014777 42.957673 6640.5838 1.0600871e+09 0.093262040 0.025199222 -36.109625 42.827882 6643.1281 1.0037613e+09 0.092566295 0.025211964 -36.200552 42.702012 6645.6724 9.5341111e+08 0.090905141 0.025766702 -36.290407 42.577214 6648.2168 9.0305041e+08 0.089251627 0.027109390 -36.380261 42.448514 6650.7611 8.5422572e+08 0.088016423 0.026429472 -36.470115 42.318725 6653.3054 8.0776145e+08 0.086991010 0.027681592 -36.559968 42.188935 6655.8497 7.6444139e+08 0.084618249 0.027961325 -36.649821 42.059145 6658.3940 7.2876524e+08 0.082193247 0.030759927 -36.739675 41.933226 6660.9384 6.8956396e+08 0.079992327 0.032478927 -36.829529 41.808428 6663.4827 6.5052436e+08 0.078168456 0.032349449 -36.929298 41.665456 6666.0270 6.1025513e+08 0.077820456 0.026913857 -37.031743 41.517481 6668.5713 5.7161754e+08 0.076852321 0.027976355 -37.121611 41.387671 6671.1156 5.4093274e+08 0.076797967 0.026866996 -37.211396 41.257944 6673.6600 5.1331527e+08 0.076211757 0.028446239 -37.296259 41.133146 6676.2043 4.8683452e+08 0.073802069 0.031845382 -37.381123 41.008283 6678.7486 4.5953614e+08 0.072775366 0.030435918 -37.465984 40.878494 6681.2929 4.3414926e+08 0.073833072 0.029882082 -37.550846 40.748755 6683.8372 4.1086113e+08 0.074278480 0.032415565 -37.635709 40.623958 6686.3816 3.9266082e+08 0.073299317 0.033983081 -37.720572 40.499125 6688.9259 3.7359592e+08 0.069992663 0.033998915 -37.805434 40.369337 6691.4702 3.5689313e+08 0.068789795 0.032890327 -37.890296 40.239548 6694.0145 3.3989324e+08 0.067561996 0.031240681 -37.975159 40.109757 6696.5588 3.2338557e+08 0.067248331 0.029907971 -38.059999 39.979990 6699.1032 3.0683080e+08 0.065760226 0.031495249 -38.139892 39.855171 6701.6475 2.9086773e+08 0.063671191 0.032359476 -38.219799 39.730297 6704.1918 2.7778820e+08 0.063737117 0.036271734 -38.311010 39.582110 6706.7361 2.6336519e+08 0.063484370 0.039727553 -38.400725 39.439525 6709.2804 2.4763627e+08 0.062675672 0.040954174 -38.485587 39.314726 6711.8248 2.3130414e+08 0.060392985 0.041630575 -38.569246 39.188725 6714.3691 2.1830504e+08 0.057917750 0.047331155 -38.649116 39.058935 6716.9134 2.1069006e+08 0.055589640 0.049746702 -38.727803 38.929140 6719.4577 2.0425597e+08 0.053366255 0.050934980 -38.802693 38.799332 6722.0020 1.9504965e+08 0.053692669 0.050602695 -38.881432 38.666514 6724.5463 1.8149498e+08 0.050437877 0.045364295 -38.972715 38.523885 6727.0907 1.6667902e+08 0.047895733 0.040839590 -39.058497 38.387444 6729.6350 1.5827283e+08 0.047320599 0.040622192 -39.138367 38.257653 6732.1793 1.5372580e+08 0.045536838 0.043773219 -39.215848 38.130253 6734.7236 1.4898271e+08 0.045350007 0.049310061 -39.290728 38.005455 6737.2679 1.4342248e+08 0.047460777 0.054989114 -39.370694 37.869465 6739.8123 1.3382268e+08 0.048004708 0.063820610 -39.456270 37.721132 6742.3566 1.2706621e+08 0.045391606 0.069479637 -39.534115 37.589808 6744.9009 1.1918963e+08 0.041230273 0.078490238 -39.608994 37.465011 6747.4452 1.1201184e+08 0.036897104 0.067207888 -39.683872 37.336621 6749.9895 1.0502858e+08 0.034680163 0.072006995 -39.758750 37.206831 6752.5339 1.0039802e+08 0.031971553 0.073516698 -39.841291 37.067845 6755.0782 98524278. 0.030153952 0.074571068 -39.926869 36.925216 6757.6225 93465039. 0.028246667 0.074850932 -40.002141 36.794957 6760.1668 87195773. 0.029337135 0.076379389 -40.077020 36.665168 6762.7111 79421987. 0.034357320 0.076903719 -40.156693 36.523050 6765.2555 73956815. 0.037492331 0.079577828 -40.235529 36.383084 6767.7998 70158023. 0.035757735 0.081080222 -40.310407 36.253295 6770.3441 65139689. 0.030627112 0.087714288 -40.386304 36.120886 6772.8884 58208674. 0.026395520 0.093885381 -40.466176 35.978257 6775.4327 52880425. 0.022158729 0.10005647 -40.541541 35.843676 6777.9771 49143358. 0.017899282 0.10622757 -40.611430 35.718878 6780.5214 46839288. 0.013596271 0.11239866 -40.685792 35.583533 6783.0657 45451316. 0.0092461319 0.11856975 -40.765664 35.435197 6785.6100 42861541. 0.0050290131 0.12474085 -40.838593 35.303227 6788.1543 39823027. 0.00091142891 0.13091194 -40.908479 35.178430 6790.6987 35002540. -0.0028720772 0.13708303 -40.985276 35.037344 6793.2430 31380761. -0.0066339752 0.14325413 -41.065148 34.889011 6795.7873 32515996. -0.011135834 0.14942522 -41.145020 34.746036 6798.3316 34450222. -0.015689876 0.15559631 -41.223828 34.603407 6800.8759 36830948. -0.020201718 0.16176741 -41.297996 34.460778 6803.4202 37550324. -0.024329652 0.16793850 -41.370307 34.323717 6805.9646 38058296. -0.028201986 0.17410959 -41.440194 34.193925 6808.5089 38046768. -0.031491525 0.18028068 -41.511923 34.058608 6811.0532 40015308. -0.034431755 0.18645178 -41.586090 33.915980 6813.5975 40037714. -0.027477278 0.19262287 -41.660258 33.773351 6816.1418 44131836. -0.042963110 0.19879396 -41.734426 33.630722 6818.6862 44706560. -0.065469169 0.20496506 -41.813869 33.482818