# # 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 = 54.177255 km # Date (UTC) = 2014-01-13T09:30:22.808 # Date (julian) = 2456670.89609731 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6509.2672 5.2361644e+10 0.089502875 0.035077723 111.52556 39.179079 6511.3981 4.8422679e+10 0.099787390 0.035720272 111.59663 39.062021 6513.5289 4.4760937e+10 0.11024922 0.036362821 111.67595 38.935262 6515.6598 4.1070628e+10 0.12080087 0.037005370 111.75717 38.806256 6517.7906 3.7716894e+10 0.13152475 0.037647919 111.82809 38.685840 6519.9214 3.4878230e+10 0.14250676 0.038290468 111.89498 38.568781 6522.0523 3.2513412e+10 0.15361215 0.038930942 111.96656 38.447816 6524.1831 3.0146247e+10 0.15892068 0.039492015 112.04779 38.318809 6526.3140 2.7798386e+10 0.16314981 0.039997238 112.12566 38.192600 6528.4448 2.5746591e+10 0.16736250 0.041795344 112.19255 38.075540 6530.5756 2.3953948e+10 0.17052357 0.044634582 112.25944 37.958480 6532.7065 2.2220561e+10 0.17346774 0.047274381 112.33438 37.831359 6534.8373 2.0407635e+10 0.17453653 0.048178788 112.41083 37.702353 6536.9682 1.8617389e+10 0.17452020 0.048656737 112.48011 37.582298 6539.0990 1.7045883e+10 0.17407228 0.049763462 112.54700 37.465240 6541.2298 1.5697002e+10 0.17330496 0.051251994 112.61389 37.349675 6543.3607 1.4554655e+10 0.17207457 0.051476554 112.68078 37.236797 6545.4915 1.3522345e+10 0.17052286 0.052459970 112.74768 37.123918 6547.6224 1.2482554e+10 0.16891634 0.053524034 112.81918 36.995472 6549.7532 1.1498563e+10 0.16711964 0.054733844 112.89085 36.866466 6551.8840 1.0585135e+10 0.16524311 0.055546060 112.95835 36.747882 6554.0149 9.8323954e+09 0.16276674 0.054832692 113.02524 36.630824 6556.1457 9.2504262e+09 0.16061175 0.053991703 113.09012 36.515774 6558.2766 8.7284215e+09 0.15867883 0.053003649 113.15283 36.402896 6560.4074 8.2020786e+09 0.15617487 0.051906994 113.21634 36.288591 6562.5382 7.6287086e+09 0.15372856 0.050367758 113.28801 36.159585 6564.6691 7.0535742e+09 0.15144500 0.048468375 113.35968 36.030577 6566.7999 6.5427877e+09 0.14954492 0.046730379 113.42243 35.913466 6568.9307 6.1194136e+09 0.14769676 0.044916083 113.48514 35.796408 6571.0616 5.7417480e+09 0.14641332 0.044486455 113.55326 35.672139 6573.1924 5.3528603e+09 0.14488885 0.043503064 113.62493 35.543132 6575.3233 4.9863628e+09 0.14306171 0.042050370 113.69203 35.422353 6577.4541 4.6751903e+09 0.14088501 0.039507083 113.75475 35.309457 6579.5849 4.4079345e+09 0.13836949 0.036748928 113.81696 35.196067 6581.7158 4.1850348e+09 0.13606394 0.035379860 113.87549 35.079009 6583.8466 3.9763769e+09 0.13376465 0.034593144 113.93402 34.961951 6585.9775 3.7810002e+09 0.13143390 0.033189314 113.99559 34.847931 6588.1083 3.6088038e+09 0.12957511 0.033343763 114.05830 34.735053 6590.2391 3.4296056e+09 0.12695081 0.030617227 114.12241 34.616770 6592.3700 3.2378725e+09 0.12404856 0.027714162 114.18931 34.487764 6594.5008 3.0475353e+09 0.12131578 0.025897597 114.25417 34.361651 6596.6317 2.8739105e+09 0.11851863 0.025724402 114.31270 34.244593 6598.7625 2.7310496e+09 0.11669023 0.025043122 114.37123 34.127535 6600.8933 2.6170993e+09 0.11677762 0.026826413 114.42976 34.014030 6603.0242 2.5120485e+09 0.11602921 0.026648960 114.48829 33.901152 6605.1550 2.3984705e+09 0.11552108 0.026795090 114.55065 33.780883 6607.2859 2.2758376e+09 0.11435980 0.025142537 114.61755 33.651877 6609.4167 2.1520265e+09 0.11169332 0.023829710 114.68139 33.528762 6611.5475 2.0400047e+09 0.10935286 0.024609290 114.73992 33.415884 6613.6784 1.9469642e+09 0.10856620 0.023822487 114.79844 33.303005 6615.8092 1.8708956e+09 0.10716813 0.023276429 114.85697 33.190127 6617.9401 1.8023260e+09 0.10649423 0.023750921 114.91550 33.077249 6620.0709 1.7266662e+09 0.10583995 0.024790043 114.97612 32.952216 6622.2017 1.6468999e+09 0.10460958 0.024704298 115.03823 32.818432 6624.3326 1.5618311e+09 0.10292894 0.025040333 115.09859 32.694861 6626.4634 1.4854186e+09 0.10146769 0.026000476 115.15712 32.581983 6628.5942 1.4195017e+09 0.099994821 0.025944366 115.21524 32.469105 6630.7251 1.3656391e+09 0.098230122 0.025930089 115.26959 32.356226 6632.8559 1.3179153e+09 0.096614894 0.026134978 115.32394 32.243348 6634.9868 1.2617208e+09 0.094994046 0.026398822 115.38376 32.119108 6637.1176 1.2072961e+09 0.093266660 0.026103811 115.44588 31.990102 6639.2484 1.1463759e+09 0.092182262 0.025539274 115.50324 31.870960 6641.3793 1.0911572e+09 0.092514441 0.025149588 115.55759 31.758082 6643.5101 1.0482145e+09 0.091668801 0.025269641 115.61194 31.645199 6645.6410 1.0069642e+09 0.090685907 0.025751952 115.66630 31.532304 6647.7718 9.6967941e+08 0.089791989 0.026844138 115.72066 31.419409 6649.9026 9.3295574e+08 0.089117463 0.026389438 115.78144 31.293173 6652.0335 8.8566054e+08 0.088773244 0.027259733 115.84355 31.164167 6654.1643 8.4153281e+08 0.088221638 0.027966223 115.89995 31.047018 6656.2952 8.0342172e+08 0.086558413 0.028282479 115.95430 30.934140 6658.4260 7.7164979e+08 0.085152336 0.030816600 116.00865 30.821263 6660.5568 7.5095683e+08 0.083716977 0.032132138 116.06300 30.708385 6662.6877 7.2289920e+08 0.082434723 0.032658443 116.11735 30.595507 6664.8185 6.9567828e+08 0.081633658 0.029211163 116.17454 30.467286 6666.9494 6.6673294e+08 0.081293788 0.027093589 116.23187 30.338279 6669.0802 6.3656663e+08 0.080078844 0.028273334 116.28665 30.223116 6671.2110 6.1599561e+08 0.080068445 0.026868356 116.34100 30.110237 6673.3419 5.9094956e+08 0.079501462 0.027970518 116.39674 29.989839 6675.4727 5.6557782e+08 0.077591427 0.030703781 116.45407 29.860833 6677.6036 5.3864503e+08 0.076004633 0.031500202 116.50873 29.737850 6679.7344 5.1269156e+08 0.075893256 0.029660901 116.55890 29.624972 6681.8652 4.9751364e+08 0.076515737 0.030321152 116.60907 29.512094 6683.9961 4.8340637e+08 0.076549871 0.032648337 116.66334 29.399216 6686.1269 4.6933974e+08 0.075710678 0.033834924 116.71769 29.286338 6688.2578 4.5321511e+08 0.073041251 0.033844688 116.77380 29.166768 6690.3886 4.3019129e+08 0.071427788 0.033071331 116.83114 29.042539 6692.5194 4.0855468e+08 0.070604791 0.032162146 116.88491 28.923947 6694.6503 3.8994978e+08 0.070056895 0.030349639 116.93508 28.811069 6696.7811 3.7817345e+08 0.069754217 0.030000320 116.98600 28.696504 6698.9119 3.7011102e+08 0.068582320 0.031469571 117.04333 28.567498 6701.0428 3.5767965e+08 0.066882993 0.031472228 117.10054 28.438681 6703.1736 3.4579008e+08 0.066735724 0.034109705 117.14652 28.325803 6705.3045 3.3333923e+08 0.066916554 0.037209886 117.19251 28.212925 6707.4353 3.2360936e+08 0.066587658 0.040124469 117.24553 28.090051 6709.5661 3.1031324e+08 0.065817181 0.040772447 117.30287 27.961044 6711.6970 2.9537419e+08 0.063960770 0.041485210 117.35643 27.842737 6713.8278 2.8406514e+08 0.061901214 0.046680685 117.40660 27.734039 6715.9587 2.7195896e+08 0.060251294 0.048359081 117.45708 27.622603 6718.0895 2.6216443e+08 0.058191329 0.049951807 117.50964 27.493598 6720.2203 2.5008503e+08 0.057327495 0.050394236 117.56210 27.365269 6722.3512 2.4014388e+08 0.057091531 0.050171053 117.61227 27.252391 6724.4820 2.3466780e+08 0.053934431 0.045901480 117.66244 27.139513 6726.6129 2.2800464e+08 0.051069759 0.040956895 117.71416 27.019257 6728.7437 2.2214654e+08 0.050541008 0.040682165 117.76672 26.895029 6730.8745 2.1390008e+08 0.048782300 0.041578002 117.81928 26.768139 6733.0054 2.0281939e+08 0.047559968 0.043953504 117.87184 26.639132 6735.1362 1.9264574e+08 0.047686203 0.049438037 117.92328 26.517610 6737.2671 1.8164635e+08 0.049242453 0.054986281 117.97345 26.404732 6739.3979 1.7486116e+08 0.049567310 0.063313501 118.02379 26.291035 6741.5287 1.7022126e+08 0.047842580 0.067266675 118.07635 26.166808 6743.6596 1.6561489e+08 0.043446356 0.075496913 118.12891 26.042581 6745.7904 1.5792279e+08 0.041666768 0.078899170 118.18146 25.913674 6747.9213 1.5033288e+08 0.037414941 0.067044009 118.23402 25.784667 6750.0521 1.4724607e+08 0.034604631 0.072093083 118.28076 25.673647 6752.1829 1.4420859e+08 0.031672153 0.073922790 118.32676 25.564933 6754.3138 1.4083583e+08 0.030250110 0.075708887 118.37599 25.446191 6756.4446 1.3309867e+08 0.027490373 0.075310958 118.42854 25.317206 6758.5755 1.2232863e+08 0.027474644 0.074922188 118.48110 25.190131 6760.7063 1.1624829e+08 0.027655792 0.077408133 118.53366 25.065902 6762.8371 1.1051725e+08 0.032313455 0.076700488 118.58290 24.945171 6764.9680 1.0906904e+08 0.034555642 0.079529658 118.62471 24.832276 6767.0988 1.0933277e+08 0.034031200 0.081865127 118.66652 24.719381 6769.2296 1.0475937e+08 0.028968020 0.085011256 118.71819 24.596095 6771.3605 1.0029041e+08 0.024800561 0.090179478 118.77075 24.471868 6773.4913 95894682. 0.020614455 0.095347700 118.82331 24.343703 6775.6222 94821408. 0.016496291 0.10051592 118.87586 24.214696 6777.7530 92410385. 0.012353239 0.10568414 118.92493 24.089183 6779.8838 86331080. 0.0080743710 0.11085237 118.97271 23.964955 6782.0147 80955663. 0.0037624713 0.11602059 119.02353 23.837691 6784.1455 78232595. -0.00045721649 0.12118881 119.07608 23.708706 6786.2764 77637614. -0.0045685540 0.12635703 119.12603 23.582313 6788.4072 75983130. -0.0087708911 0.13152526 119.17381 23.458085 6790.5380 70331468. -0.013364262 0.13669348 119.22375 23.333857 6792.6689 68198968. -0.017875969 0.14186170 119.27631 23.209628 6794.7997 66002759. -0.022675578 0.14702992 119.32715 23.083685 6796.9306 63170914. -0.028083786 0.15219815 119.37494 22.954680 6799.0614 59143217. -0.034802580 0.15736637 119.42272 22.826945 6801.1922 55658544. -0.045100541 0.16253459 119.47050 22.702717 6803.3231 54177506. -0.084007936 0.16770281 119.51828 22.578489 6805.4539 51373871. -0.059792883 0.17287103 119.56606 22.454260 6807.5848 47913981. 0.0041839167 0.17803926 119.61383 22.330031