# # 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 = 37.792221 km # Date (UTC) = 2010-12-16T19:44:02.123 # Date (julian) = 2455547.32224679 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6499.2860 2.1933427e+11 0.047748537 0.032067909 177.63677 44.572238 6501.6251 1.8118880e+11 0.056458085 0.032773253 177.54702 44.470257 6503.9642 1.4926434e+11 0.065149851 0.033478597 177.45728 44.368276 6506.3033 1.2367915e+11 0.073887349 0.034183940 177.35723 44.250361 6508.6423 1.0308079e+11 0.082749392 0.034889284 177.25626 44.131040 6510.9814 8.6310852e+10 0.091799520 0.035594628 177.16662 44.024548 6513.3205 7.3519071e+10 0.10126308 0.036299972 177.08096 43.922567 6515.6596 6.3788243e+10 0.11134740 0.037005316 176.99529 43.819405 6517.9987 5.5873101e+10 0.12209395 0.037710660 176.90961 43.713331 6520.3377 4.9314294e+10 0.13358339 0.038416003 176.82394 43.607257 6522.6768 4.3823836e+10 0.14397281 0.039094487 176.73827 43.504610 6525.0159 3.9088726e+10 0.15105616 0.039780399 176.65261 43.402628 6527.3550 3.4882444e+10 0.15631927 0.040974200 176.56852 43.299073 6529.6941 3.1336588e+10 0.16152121 0.043341385 176.48693 43.193013 6532.0332 2.8176725e+10 0.16655697 0.046711890 176.40534 43.086953 6534.3722 2.5303087e+10 0.16954753 0.048048687 176.30994 42.972791 6536.7113 2.2628374e+10 0.17156817 0.048426937 176.21357 42.858060 6539.0504 2.0204761e+10 0.17291300 0.049704638 176.12836 42.749868 6541.3895 1.8156838e+10 0.17281296 0.051200223 176.04677 42.643792 6543.7286 1.6414453e+10 0.17123133 0.051573108 175.96517 42.538962 6546.0676 1.4856309e+10 0.16885317 0.052520188 175.88358 42.436981 6548.4067 1.3442894e+10 0.16718731 0.053789109 175.80199 42.335000 6550.7458 1.2237349e+10 0.16520673 0.055172104 175.72041 42.229540 6553.0849 1.1206535e+10 0.16355817 0.055292394 175.63883 42.123480 6555.4240 1.0260202e+10 0.16136182 0.054497126 175.55499 42.013939 6557.7631 9.3303736e+09 0.15924885 0.053387823 175.46779 41.899208 6560.1021 8.4555899e+09 0.15682851 0.052182221 175.38275 41.786406 6562.4412 7.6763377e+09 0.15402887 0.050460069 175.30525 41.680344 6564.7803 7.0215384e+09 0.15149398 0.048417966 175.22775 41.574282 6567.1194 6.4712324e+09 0.14927422 0.046516248 175.15024 41.471357 6569.4585 5.9686668e+09 0.14717892 0.044882263 175.07272 41.369362 6571.7975 5.5123539e+09 0.14526724 0.044285450 174.99521 41.266066 6574.1366 5.1167137e+09 0.14229057 0.042789385 174.91770 41.160006 6576.4757 4.7432872e+09 0.13936402 0.040823845 174.84019 41.053946 6578.8148 4.3755910e+09 0.13568974 0.037362969 174.75427 40.940356 6581.1539 4.0034878e+09 0.13230432 0.035550015 174.66707 40.825625 6583.4930 3.6556505e+09 0.12917339 0.034772156 174.58937 40.716872 6585.8320 3.3605952e+09 0.12551133 0.033305582 174.51595 40.610810 6588.1711 3.1202832e+09 0.12209606 0.033322787 174.44155 40.505717 6590.5102 2.9146634e+09 0.11757171 0.030113022 174.36403 40.403722 6592.8493 2.7150443e+09 0.11327772 0.027248618 174.28652 40.301727 6595.1884 2.5122902e+09 0.10937542 0.025643105 174.20499 40.186099 6597.5274 2.3039409e+09 0.10630894 0.025556287 174.12238 40.066779 6599.8665 2.1113369e+09 0.10529680 0.024981847 174.04536 39.958001 6602.2056 1.9475121e+09 0.10486699 0.027341179 173.97193 39.856019 6604.5447 1.8139568e+09 0.10368207 0.026394693 173.89851 39.753399 6606.8838 1.6932879e+09 0.10274036 0.025915861 173.82508 39.647338 6609.2228 1.5806870e+09 0.099559557 0.023772128 173.75165 39.541276 6611.5619 1.4757342e+09 0.096738800 0.024600110 173.68110 39.438092 6613.9010 1.3873236e+09 0.095548600 0.023904174 173.61175 39.336110 6616.2401 1.3031685e+09 0.093840554 0.023319982 173.53904 39.229726 6618.5792 1.2117320e+09 0.093078907 0.024208142 173.45643 39.110389 6620.9183 1.1237639e+09 0.092147754 0.025063105 173.37481 38.992353 6623.2573 1.0363790e+09 0.090459949 0.024587166 173.30546 38.890372 6625.5964 9.6554629e+08 0.088854441 0.026109313 173.23611 38.788391 6627.9355 9.0737549e+08 0.086718171 0.025678180 173.16676 38.683866 6630.2746 8.5579006e+08 0.084835502 0.025928978 173.09741 38.577806 6632.6137 8.0757110e+08 0.082758697 0.026105929 173.02657 38.470254 6634.9527 7.5123708e+08 0.080951043 0.026396341 172.94855 38.355523 6637.2918 6.9637971e+08 0.079084613 0.026018483 172.87055 38.240805 6639.6309 6.4677060e+08 0.078159799 0.025402573 172.80518 38.134671 6641.9700 6.0769202e+08 0.077989533 0.025151594 172.73992 38.028609 6644.3091 5.7080977e+08 0.076507435 0.025377010 172.66774 37.917842 6646.6482 5.3166911e+08 0.075198846 0.026255653 172.58970 37.803094 6648.9872 4.9252751e+08 0.073967803 0.027625143 172.51630 37.692981 6651.3263 4.6131842e+08 0.073843012 0.026734241 172.45104 37.590999 6653.6654 4.3535785e+08 0.073504160 0.027865391 172.38578 37.489018 6656.0045 4.0678559e+08 0.071918313 0.028027351 172.30889 37.371232 6658.3436 3.8008438e+08 0.070507984 0.030670394 172.23087 37.251913 6660.6826 3.5267806e+08 0.069130294 0.032246488 172.16219 37.145294 6663.0217 3.3134621e+08 0.067874585 0.032477192 172.09692 37.043313 6665.3608 3.1400814e+08 0.067247379 0.027955935 172.03165 36.941331 6667.6999 2.9775555e+08 0.066556204 0.027360539 171.96638 36.839350 6670.0390 2.8280422e+08 0.065752969 0.027310578 171.90111 36.737369 6672.3781 2.6642369e+08 0.065270700 0.027098725 171.82907 36.620986 6674.7171 2.5042695e+08 0.063765477 0.029559740 171.75563 36.501647 6677.0562 2.3406050e+08 0.061183147 0.032278302 171.68518 36.385308 6679.3953 2.1570488e+08 0.060565682 0.029941116 171.61635 36.270577 6681.7344 2.0120624e+08 0.061228136 0.030220762 171.54919 36.161864 6684.0735 1.8571594e+08 0.061133295 0.032657820 171.48393 36.059883 6686.4125 1.7410401e+08 0.059811581 0.034001107 171.41858 35.957545 6688.7516 1.6614655e+08 0.056520789 0.033958691 171.34975 35.838225 6691.0907 1.5431134e+08 0.054926000 0.032979862 171.28091 35.718906 6693.4298 1.4571128e+08 0.053639039 0.031456645 171.21851 35.614177 6695.7689 1.3798353e+08 0.053004062 0.029718242 171.15731 35.512196 6698.1079 1.3252900e+08 0.052061172 0.030365990 171.09135 35.405241 6700.4470 1.2821752e+08 0.050292911 0.030999294 171.01793 35.290510 6702.7861 1.2239065e+08 0.049511582 0.033504445 170.94547 35.175779 6705.1252 1.1318614e+08 0.049700639 0.036891176 170.87663 35.061049 6707.4643 1.0278631e+08 0.049190040 0.040120319 170.80816 34.946596 6709.8034 97413884. 0.048292576 0.040621569 170.75105 34.840520 6712.1424 91955450. 0.046083834 0.042094420 170.69393 34.734444 6714.4815 90707768. 0.044111679 0.047339609 170.63000 34.623339 6716.8206 87870167. 0.042020732 0.049610032 170.56117 34.508608 6719.1597 82843574. 0.039185881 0.051218127 170.49233 34.393878 6721.4988 77227388. 0.038506913 0.050454179 170.42349 34.279147 6723.8378 70109060. 0.034272141 0.049836226 170.35567 34.164416 6726.1769 63533101. 0.024346184 0.040952963 170.29142 34.049685 6728.5160 59351999. -0.0099771031 0.040359455 170.22731 33.935515 6730.8551 58523123. 0.015916651 0.041551338 170.16612 33.833533 6733.1942 58583063. 0.074549582 0.044978530 170.10493 33.731552