# # 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 = 52.488957 km # Date (UTC) = 2014-11-20T09:15:40.803 # Date (julian) = 2456981.88588893 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6508.1263 6.4434980e+10 0.081390482 0.034733677 -10.878508 61.986332 6510.3205 5.8654696e+10 0.091334467 0.035395336 -11.087934 61.887232 6512.5147 5.2732395e+10 0.10135946 0.036056995 -11.309339 61.778990 6514.7090 4.7382056e+10 0.11159837 0.036718654 -11.530744 61.670748 6516.9032 4.2607067e+10 0.12207360 0.037380313 -11.752149 61.562505 6519.0974 3.8488811e+10 0.13280957 0.038041972 -11.969397 61.454262 6521.2916 3.4882945e+10 0.14379775 0.038703631 -12.180961 61.346019 6523.4858 3.1742278e+10 0.15080679 0.039299517 -12.382209 61.243055 6525.6800 2.9248912e+10 0.15556375 0.039704606 -12.567323 61.148347 6527.8742 2.7203806e+10 0.16045055 0.041351169 -12.754215 61.052398 6530.0684 2.5332701e+10 0.16450188 0.043924508 -12.965781 60.939235 6532.2627 2.3414637e+10 0.16722300 0.046903608 -13.177004 60.826243 6534.4569 2.1414388e+10 0.16836309 0.048072360 -13.378729 60.718000 6536.6511 1.9630748e+10 0.16864583 0.048373035 -13.580297 60.609815 6538.8453 1.8179267e+10 0.16918235 0.049568292 -13.756902 60.510763 6541.0395 1.7014786e+10 0.16910056 0.051313719 -13.933407 60.411748 6543.2337 1.5911650e+10 0.16858732 0.051443232 -14.123703 60.306464 6545.4279 1.4753025e+10 0.16770848 0.052459401 -14.320508 60.198221 6547.6221 1.3634706e+10 0.16659867 0.053523952 -14.501396 60.095948 6549.8164 1.2687343e+10 0.16527198 0.054798206 -14.673595 59.996933 6552.0106 1.1859211e+10 0.16363018 0.055584108 -14.852173 59.893334 6554.2048 1.1067541e+10 0.16125652 0.054836677 -15.044058 59.780171 6556.3990 1.0216612e+10 0.15927897 0.053954467 -15.234509 59.667009 6558.5932 9.3572593e+09 0.15723732 0.052733825 -15.421473 59.553847 6560.7874 8.5971872e+09 0.15482490 0.051564355 -15.602381 59.444350 6562.9816 7.9557476e+09 0.15282511 0.049945851 -15.765971 59.345335 6565.1758 7.4404232e+09 0.15089584 0.048118731 -15.929562 59.246319 6567.3701 6.9688746e+09 0.14927515 0.046304300 -16.110428 59.134058 6569.5643 6.5057031e+09 0.14794209 0.044889149 -16.292472 59.020894 6571.7585 6.1021713e+09 0.14677972 0.044296121 -16.453970 58.920504 6573.9527 5.7641220e+09 0.14478668 0.042892972 -16.613279 58.821474 6576.1469 5.4467663e+09 0.14300607 0.041202308 -16.782942 58.711371 6578.3411 5.1252350e+09 0.14094031 0.038110957 -16.960067 58.593290 6580.5353 4.8052854e+09 0.13883440 0.036026035 -17.125040 58.485670 6582.7295 4.5424014e+09 0.13699547 0.035095267 -17.280020 58.386655 6584.9238 4.3257321e+09 0.13498063 0.034012309 -17.438889 58.283334 6587.1180 4.0889837e+09 0.13290149 0.033184505 -17.611094 58.165250 6589.3122 3.8523229e+09 0.13075065 0.032426649 -17.778303 58.050854 6591.5064 3.6426786e+09 0.12798591 0.028630510 -17.924673 57.951839 6593.7006 3.4666518e+09 0.12518242 0.026450875 -18.071043 57.852824 6595.8948 3.2973544e+09 0.12190865 0.025716366 -18.235618 57.737211 6598.0890 3.1108271e+09 0.11974676 0.025364661 -18.402901 57.619127 6600.2832 2.9324087e+09 0.11916329 0.025572160 -18.549052 57.517023 6602.4775 2.7889953e+09 0.11866897 0.027109196 -18.691117 57.418008 6604.6717 2.6585985e+09 0.11789140 0.026470088 -18.843639 57.309171 6606.8659 2.5156409e+09 0.11724806 0.025948012 -19.006002 57.191090 6609.0601 2.3793998e+09 0.11452501 0.023723780 -19.156491 57.080133 6611.2543 2.2691438e+09 0.11190691 0.024796287 -19.294251 56.976811 6613.4485 2.1695413e+09 0.11103576 0.023738151 -19.435157 56.871132 6615.6427 2.0663229e+09 0.10973306 0.023271307 -19.592600 56.753051 6617.8369 1.9598533e+09 0.10904305 0.023716734 -19.747537 56.636848 6620.0312 1.8638934e+09 0.10844031 0.024777236 -19.885297 56.533527 6622.2254 1.7900013e+09 0.10702056 0.024698008 -20.023057 56.430207 6624.4196 1.7033441e+09 0.10522237 0.025086907 -20.172694 56.315010 6626.6138 1.6135296e+09 0.10353314 0.025808880 -20.325218 56.196927 6628.8080 1.5287824e+09 0.10208580 0.026031151 -20.459698 56.090240 6631.0022 1.4634945e+09 0.10009850 0.025930991 -20.588848 55.986921 6633.1964 1.4104177e+09 0.098388080 0.026186547 -20.726285 55.876972 6635.3906 1.3452820e+09 0.096533190 0.026458370 -20.873887 55.758889 6637.5849 1.2736783e+09 0.094939463 0.025874970 -21.021491 55.640806 6639.7791 1.1932589e+09 0.094312029 0.025349620 -21.169096 55.522723 6641.9733 1.1298843e+09 0.094112827 0.025151605 -21.307957 55.410312 6644.1675 1.0817171e+09 0.092621223 0.025361708 -21.432802 55.306991 6646.3617 1.0366850e+09 0.091306513 0.026107375 -21.558739 55.202766 6648.5559 9.9330112e+08 0.090104723 0.027336415 -21.701423 55.084685 6650.7501 9.4231554e+08 0.089732687 0.026426962 -21.843469 54.967028 6652.9443 8.9643684e+08 0.089497784 0.027510347 -21.964009 54.863707 6655.1386 8.6059045e+08 0.088277370 0.027667466 -22.084550 54.760386 6657.3328 8.2489585e+08 0.086480414 0.029287106 -22.217247 54.643172 6659.5270 7.9204485e+08 0.085008218 0.031724671 -22.355009 54.520170 6661.7212 7.6101265e+08 0.083561310 0.032902267 -22.481174 54.410422 6663.9154 7.3273901e+08 0.082114649 0.032229533 -22.601715 54.307102 6666.1096 7.0994251e+08 0.082031855 0.026929955 -22.726569 54.198607 6668.3038 6.8091053e+08 0.081073506 0.027739639 -22.859412 54.080524 6670.4980 6.4744660e+08 0.080684929 0.027097899 -22.986972 53.965767 6672.6923 6.1924740e+08 0.080256099 0.027280841 -23.103207 53.858142 6674.8865 5.9438816e+08 0.078725979 0.029702582 -23.219448 53.750511 6677.0807 5.7492820e+08 0.076320315 0.032243528 -23.347308 53.632484 6679.2749 5.5352842e+08 0.075707111 0.030040616 -23.475231 53.514400 6681.4691 5.2345855e+08 0.076599569 0.030017246 -23.603153 53.391581 6683.6633 5.0136478e+08 0.076782616 0.032160675 -23.731076 53.268579 6685.8575 4.8302589e+08 0.076079091 0.033610597 -23.844123 53.163886 6688.0517 4.6702948e+08 0.073393798 0.033797134 -23.956053 53.060566 6690.2460 4.4998657e+08 0.071239779 0.033087678 -24.074709 52.945292 6692.4402 4.2585581e+08 0.070083030 0.032254193 -24.197712 52.822289 6694.6344 4.0635023e+08 0.069211060 0.030371915 -24.311883 52.710593 6696.8286 3.9155591e+08 0.068708978 0.030020047 -24.419524 52.607256 6699.0228 3.8025108e+08 0.067384601 0.031569393 -24.531042 52.498957 6701.2170 3.6246427e+08 0.065644391 0.031727867 -24.654044 52.375954 6703.4112 3.3751501e+08 0.065687097 0.034704254 -24.775961 52.254038 6705.6054 3.1914866e+08 0.065835222 0.037744954 -24.894023 52.135977 6707.7997 3.0678800e+08 0.065494334 0.040072277 -25.009330 52.019865 6709.9939 2.9024772e+08 0.064477284 0.040500397 -25.112666 51.912223 6712.1881 2.7418387e+08 0.062378702 0.042179154 -25.216002 51.804581 6714.3823 2.6006389e+08 0.060313102 0.047332149 -25.332087 51.683659 6716.5765 2.4999322e+08 0.058407809 0.049250494 -25.450170 51.560657 6718.7707 2.5182764e+08 0.055843222 0.051012743 -25.564159 51.441747 6720.9649 2.4341165e+08 0.055972456 0.050307963 -25.677322 51.323664 6723.1591 2.3684678e+08 0.054748780 0.049457699 -25.779172 51.213943 6725.3534 2.2895470e+08 0.050461485 0.041355298 -25.878187 51.106318 6727.5476 2.1933574e+08 0.049165091 0.040230874 -25.983946 50.991362 6729.7418 2.1245348e+08 0.048098340 0.040551015 -26.097108 50.868360 6731.9360 2.0280578e+08 0.046258479 0.043612816 -26.208085 50.745357 6734.1302 1.9314598e+08 0.045278679 0.049345766 -26.316328 50.622353 6736.3244 1.8348843e+08 0.046975348 0.051581473 -26.424571 50.501377 6738.5186 1.7620595e+08 0.047921777 0.060176369 -26.532813 50.383295 6740.7128 1.7006378e+08 0.047033176 0.065268125 -26.641056 50.263347 6742.9071 1.6298097e+08 0.043631823 0.070820954 -26.749298 50.140344 6745.1013 1.5632397e+08 0.040240547 0.078609457 -26.852847 50.022675 6747.2955 1.5161880e+08 0.035735245 0.067259440 -26.947558 49.915050 6749.4897 1.4557432e+08 0.034640415 0.072143856 -27.042474 49.807057 6751.6839 1.4026921e+08 0.031430312 0.074000828 -27.145796 49.684054 6753.8781 1.3063724e+08 0.029844069 0.075819027 -27.249118 49.561052 6756.0723 1.2584942e+08 0.027378004 0.074353016 -27.352439 49.438049 6758.2665 1.2630333e+08 0.026967086 0.074268955 -27.455761 49.315046 6760.4608 1.2423052e+08 0.027504799 0.076939903 -27.559085 49.196761 6762.6550 1.1959777e+08 0.032165993 0.076994334 -27.662408 49.078676 6764.8492 1.1178492e+08 0.034892233 0.079523967 -27.765730 48.956035 6767.0434 1.0571431e+08 0.034884384 0.081927181 -27.869052 48.833033 6769.2376 1.0046028e+08 0.030020656 0.085030550 -27.967975 48.710030 6771.4318 1.0236171e+08 0.026051295 0.090352480 -28.066378 48.587027 6773.6260 96798277. 0.022107343 0.095674410 -28.164780 48.464025 6775.8202 95123132. 0.018153555 0.10099634 -28.263183 48.341022 6778.0145 89535317. 0.014207928 0.10631827 -28.361584 48.218019 6780.2087 82141228. 0.010249046 0.11164020 -28.459986 48.095017 6782.4029 79079778. 0.0062993697 0.11696213 -28.554457 47.972030 6784.5971 71946036. 0.0023176919 0.12228406 -28.647923 47.849048 6786.7913 73855372. -0.0016388658 0.12760599 -28.745160 47.726050 6788.9855 70977510. -0.0056512317 0.13292792 -28.843563 47.603047 6791.1797 68782839. -0.0096905135 0.13824985 -28.938366 47.480045 6793.3739 65329397. -0.013817325 0.14357178 -29.031847 47.357042 6795.5682 59575533. -0.018147897 0.14889371 -29.125329 47.237479 6797.7624 55782396. -0.022738872 0.15421564 -29.218812 47.119397 6799.9566 54841325. -0.028492055 0.15953757 -29.309015 46.998036 6802.1508 52223738. -0.043369829 0.16485950 -29.397577 46.875034 6804.3450 51633265. -0.038421559 0.17018143 -29.489259 46.752031 6806.5392 50315909. -0.022953158 0.17550336 -29.582742 46.629027