# # 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 = 37.313243 km # Date (UTC) = 2017-01-16T09:09:28.694 # Date (julian) = 2457769.88158211 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6513.4790 4.9754316e+10 0.11988455 0.036347763 -16.350293 51.850098 6514.9766 4.4941704e+10 0.12737468 0.036799353 -16.440960 51.766148 6516.4741 4.0934044e+10 0.13498150 0.037250942 -16.525172 51.686500 6517.9717 3.7888260e+10 0.14279076 0.037702532 -16.604504 51.610107 6519.4693 3.5408800e+10 0.15074804 0.038154121 -16.683836 51.533714 6520.9669 3.3222805e+10 0.15879716 0.038605711 -16.764493 51.456066 6522.4644 3.1020865e+10 0.16558604 0.039038869 -16.851801 51.372115 6523.9620 2.8633344e+10 0.16916614 0.039417545 -16.939110 51.288165 6525.4596 2.6234562e+10 0.17287066 0.039729763 -17.026419 51.203582 6526.9572 2.3965104e+10 0.17636274 0.040671558 -17.113728 51.116273 6528.4547 2.1838264e+10 0.17806426 0.041803226 -17.201036 51.028964 6529.9523 1.9942248e+10 0.18092693 0.043752731 -17.286052 50.943948 6531.4499 1.8286296e+10 0.18168145 0.045883492 -17.362446 50.867555 6532.9475 1.7005424e+10 0.18331803 0.047475695 -17.438839 50.791161 6534.4450 1.5910833e+10 0.18338784 0.048069051 -17.515233 50.714768 6535.9426 1.4837810e+10 0.18183686 0.047815397 -17.597723 50.629569 6537.4402 1.3747713e+10 0.18240108 0.048892753 -17.681674 50.542260 6538.9378 1.2637035e+10 0.18092881 0.049613320 -17.765624 50.454950 6540.4353 1.1648995e+10 0.18003940 0.051059765 -17.849575 50.370424 6541.9329 1.0732206e+10 0.17789585 0.051023995 -17.933526 50.286473 6543.4305 9.9310612e+09 0.17593784 0.051494875 -18.017477 50.202522 6544.9281 9.2392417e+09 0.17477010 0.052397205 -18.092498 50.125002 6546.4256 8.6565716e+09 0.17241055 0.052814752 -18.165953 50.048609 6547.9232 8.1914990e+09 0.17105081 0.053638443 -18.239409 49.972216 6549.4208 7.7168054e+09 0.16923601 0.054395089 -18.316057 49.890939 6550.9184 7.2112992e+09 0.16738248 0.055215308 -18.396650 49.803629 6552.4159 6.6794533e+09 0.16635990 0.055482077 -18.477243 49.716319 6553.9135 6.1579508e+09 0.16419425 0.054875860 -18.553106 49.634135 6555.4111 5.7514722e+09 0.16262430 0.054507960 -18.623623 49.557742 6556.9087 5.4410876e+09 0.16057474 0.053879537 -18.694140 49.481349 6558.4062 5.1644930e+09 0.15803912 0.052893148 -18.765322 49.404457 6559.9038 4.9025071e+09 0.15574397 0.052285167 -18.845914 49.320506 6561.4014 4.6028727e+09 0.15270310 0.051174891 -18.926507 49.236555 6562.8990 4.3038556e+09 0.15033762 0.050024517 -19.005953 49.153270 6564.3965 4.0329709e+09 0.14758924 0.048591891 -19.073532 49.076877 6565.8941 3.7993064e+09 0.14489429 0.047303133 -19.141111 49.000484 6567.3917 3.6004883e+09 0.14283249 0.046286015 -19.208690 48.924091 6568.8893 3.4114086e+09 0.14007753 0.044954229 -19.282880 48.840223 6570.3868 3.2152488e+09 0.13812829 0.044757273 -19.360114 48.752914 6571.8844 3.0136955e+09 0.13575351 0.044261728 -19.437349 48.665605 6573.3820 2.8303977e+09 0.13301832 0.043350956 -19.507760 48.586010 6574.8795 2.6881196e+09 0.13064084 0.042432560 -19.575339 48.509617 6576.3771 2.5889083e+09 0.12792462 0.040937316 -19.642919 48.433224 6577.8747 2.4914289e+09 0.12576245 0.038846432 -19.713426 48.353519 6579.3723 2.3680952e+09 0.12347584 0.036865842 -19.790661 48.266210 6580.8698 2.2310928e+09 0.12153172 0.035716888 -19.867895 48.178901 6582.3674 2.1042002e+09 0.12006409 0.035193809 -19.941032 48.095143 6583.8650 2.0102509e+09 0.11803306 0.034583843 -20.005673 48.018750 6585.3626 1.9434402e+09 0.11626456 0.033680905 -20.070313 47.942357 6586.8601 1.8752886e+09 0.11437375 0.033160177 -20.134953 47.865964 6588.3577 1.8023260e+09 0.11264741 0.033260469 -20.208110 47.779506 6589.8553 1.7146847e+09 0.11081202 0.031349148 -20.281987 47.692197 6591.3529 1.6334135e+09 0.10844798 0.028803737 -20.355864 47.604887 6592.8504 1.5538705e+09 0.10660799 0.027247484 -20.421022 47.527883 6594.3480 1.4961558e+09 0.10432028 0.025981478 -20.485662 47.451490 6595.8456 1.4519001e+09 0.10168727 0.025711262 -20.550303 47.375097 6597.3432 1.4008864e+09 0.099705884 0.025614436 -20.618121 47.292803 6598.8407 1.3440773e+09 0.097781942 0.025005765 -20.688640 47.205495 6600.3383 1.2693482e+09 0.097430250 0.025685395 -20.759159 47.118186 6601.8359 1.2022751e+09 0.096602666 0.027439348 -20.824717 47.037019 6603.3335 1.1454357e+09 0.095179337 0.026465862 -20.886420 46.960625 6604.8310 1.1094041e+09 0.094115288 0.026564722 -20.948122 46.884231 6606.3286 1.0764388e+09 0.092939555 0.026913449 -21.011228 46.806099 6607.8262 1.0384708e+09 0.091007972 0.024075578 -21.081746 46.718790 6609.3238 9.8558527e+08 0.088744055 0.023802105 -21.152265 46.631482 6610.8213 9.2865087e+08 0.086804476 0.024787751 -21.221185 46.546152 6612.3189 8.8146386e+08 0.085993271 0.024082470 -21.282888 46.469758 6613.8165 8.4653932e+08 0.085397161 0.023873162 -21.344590 46.393364 6615.3141 8.1571054e+08 0.084580016 0.023261195 -21.406293 46.316970 6616.8116 7.7664544e+08 0.083776378 0.023409686 -21.472241 46.232086 6618.3092 7.4285691e+08 0.083501666 0.024004289 -21.539402 46.144778 6619.8068 6.9907443e+08 0.083257797 0.024720579 -21.606563 46.057470 6621.3044 6.6507948e+08 0.082596958 0.024988564 -21.667014 45.978883 6622.8019 6.3509647e+08 0.081689224 0.024544543 -21.725787 45.902477 6624.2995 6.0294085e+08 0.080523953 0.025022637 -21.784560 45.826071 6625.7971 5.8103331e+08 0.079824921 0.026348769 -21.846663 45.745337 6627.2947 5.4799361e+08 0.078412436 0.025430634 -21.913824 45.658029 6628.7922 5.1936038e+08 0.077766808 0.026024751 -21.980984 45.570721 6630.2898 4.9080771e+08 0.076871078 0.025929016 -22.044626 45.487986 6631.7874 4.6372937e+08 0.075731034 0.026010748 -22.103390 45.411592 6633.2850 4.4507413e+08 0.074843110 0.026202004 -22.162154 45.335198 6634.7825 4.3083399e+08 0.073807737 0.026383925 -22.221062 45.258616 6636.2801 4.1303526e+08 0.072645282 0.026440975 -22.288210 45.171325 6637.7777 3.9045989e+08 0.072014655 0.025780526 -22.355371 45.084017 6639.2753 3.6370746e+08 0.071512482 0.025529691 -22.422104 44.997121 6640.7728 3.4202626e+08 0.072137260 0.025176095 -22.477931 44.920727 6642.2704 3.3031188e+08 0.072135484 0.025162762 -22.533757 44.844334 6643.7680 3.1588845e+08 0.071587101 0.025308574 -22.589584 44.767940 6645.2656 2.9912641e+08 0.071287709 0.025576088 -22.650469 44.684623 6646.7631 2.7737571e+08 0.070763492 0.026315169 -22.714271 44.597314 6648.2607 2.6420152e+08 0.070291617 0.027138802 -22.778073 44.510004 6649.7583 2.5436401e+08 0.069966493 0.026588434 -22.836640 44.429860 6651.2559 2.4929958e+08 0.069710632 0.026680242 -22.892466 44.353467 6652.7534 2.3975071e+08 0.069656632 0.027457820 -22.948293 44.277074 6654.2510 2.2593717e+08 0.069175972 0.027929295 -23.005287 44.197920 6655.7486 2.1824480e+08 0.068087265 0.027919531 -23.065731 44.110610 6657.2462 2.0801728e+08 0.067103712 0.029186643 -23.126176 44.023301 6658.7437 2.0257591e+08 0.066135443 0.031380098 -23.185351 43.938993 6660.2413 1.9329359e+08 0.065484073 0.031845331 -23.241177 43.862600 6661.7389 1.8551375e+08 0.064559820 0.032911276 -23.297003 43.786207 6663.2365 1.8146228e+08 0.063863007 0.032417686 -23.352829 43.709814 6664.7340 1.7674631e+08 0.063508377 0.029520311 -23.412681 43.623907 6666.2316 1.7259507e+08 0.063496887 0.026953726 -23.473126 43.536597 6667.7292 1.6752819e+08 0.063103883 0.027371297 -23.533571 43.449287 6669.2268 1.7427809e+08 0.062239293 0.028122813 -23.587262 43.371732 6670.7243 1.4821988e+08 0.062637761 0.026993063 -23.640149 43.295339 6672.2219 1.2514460e+08 0.062695971 0.027008217 -23.693037 43.218946 6673.7195 1.1309757e+08 0.062378055 0.028535246 -23.749629 43.137202 6675.2171 1.0969108e+08 0.061291856 0.030214088 -23.810073 43.049893 6676.7146 1.2989544e+08 0.059785581 0.032174296 -23.870518 42.962583 6678.2122 1.2471042e+08 0.059626470 0.030794686 -23.925586 42.880866 6679.7098 1.1383021e+08 0.060028909 0.029681246 -23.975536 42.804473 6681.2073 1.0950481e+08 0.060947796 0.029816433 -24.025485 42.728080 6682.7049 1.0633754e+08 0.061677191 0.030963131 -24.076577 42.650499 6684.2025 1.0259259e+08 0.061959860 0.032664368 -24.137022 42.563191 6685.7001 96773815. 0.061960435 0.033444287 -24.197466 42.475883 6687.1976 94741418. 0.060758552 0.034232670 -24.257471 42.388575 6688.6952 92410903. 0.059099368 0.033945671 -24.314558 42.301265 6690.1928 90599766. 0.058570490 0.033093769 -24.371645 42.213955 6691.6904 86314397. 0.058178571 0.032838381 -24.427640 42.128314 6693.1879 81030405. 0.058057379 0.031539612 -24.477590 42.051921 6694.6855 81512424. 0.057880566 0.030300233 -24.527540 41.975528 6696.1831 79725176. 0.058023652 0.029751858 -24.577489 41.899135 6697.6807 78029217. 0.057804834 0.030177405 -24.632788 41.814560 6699.1782 72986590. 0.057184193 0.031425963 -24.689875 41.727251 6700.6758 65835321. 0.056494915 0.031168992 -24.746961 41.639941 6702.1734 61888270. 0.056086889 0.033015186 -24.798541 41.561055 6703.6710 61210638. 0.056717209 0.035354212 -24.848490 41.484662 6705.1685 59956251. 0.057235247 0.036968242 -24.898440 41.408269 6706.6661 66420235. 0.056972159 0.039605730 -24.949781 41.327857 6708.1637 65815921. 0.057147295 0.040221833 -25.003510 41.240547 6709.6613 63384494. 0.056937233 0.040711945 -25.057238 41.153237 6711.1588 66652337. 0.056047752 0.040872951 -25.110967 41.065928 6712.6564 59034323. 0.056090768 0.043048704 -25.164695 40.978619 6714.1540 54698770. 0.060779908 0.047314985 -25.218424 40.891311 6715.6516 50001575. 0.055268349 0.048044991 -25.270594 40.808503 6717.1491 46830028. 0.042348081 0.049865043 -25.320544 40.732110