# # 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 = 48.980109 km # Date (UTC) = 2014-12-06T10:23:45.005 # Date (julian) = 2456997.93315978 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6495.3735 8.2649446e+10 0.035617872 0.030888115 -34.088735 53.926222 6497.7838 7.4588139e+10 0.043182224 0.031614927 -34.240060 53.817456 6500.1941 6.6158384e+10 0.050537996 0.032341739 -34.381470 53.714392 6502.6044 5.8983362e+10 0.057774158 0.033068551 -34.511776 53.617714 6505.0146 5.3451788e+10 0.065118485 0.033795363 -34.642082 53.520646 6507.4249 4.9278690e+10 0.072863265 0.034522175 -34.772387 53.419765 6509.8352 4.5396968e+10 0.081059645 0.035248987 -34.902692 53.318884 6512.2455 4.1784786e+10 0.089855958 0.035975799 -35.041265 53.212364 6514.6557 3.8218475e+10 0.099293914 0.036702611 -35.183155 53.103583 6517.0660 3.5087537e+10 0.10963820 0.037429423 -35.315582 52.999536 6519.4763 3.2396993e+10 0.12107539 0.038156235 -35.441684 52.898654 6521.8866 3.0107048e+10 0.13368145 0.038883047 -35.567787 52.798697 6524.2968 2.8203643e+10 0.14113624 0.039532416 -35.693888 52.702019 6526.7071 2.6325131e+10 0.14819610 0.040409419 -35.819990 52.605341 6529.1174 2.4325119e+10 0.15413227 0.042422783 -35.955378 52.494515 6531.5277 2.2325563e+10 0.16029711 0.045996708 -36.092517 52.381020 6533.9379 2.0363822e+10 0.16510230 0.047918185 -36.218581 52.279745 6536.3482 1.8605246e+10 0.16810537 0.048102061 -36.340478 52.183067 6538.7585 1.7075361e+10 0.17090494 0.049526027 -36.460921 52.084923 6541.1688 1.5766394e+10 0.17123213 0.051271798 -36.578633 51.984028 6543.5790 1.4634777e+10 0.16986310 0.051533866 -36.696346 51.883134 6545.9893 1.3513238e+10 0.16731580 0.052464430 -36.828298 51.770031 6548.3996 1.2415924e+10 0.16583225 0.053786978 -36.960707 51.656536 6550.8099 1.1354122e+10 0.16397521 0.055188143 -37.080546 51.553817 6553.2201 1.0470783e+10 0.16252469 0.055224405 -37.198241 51.452936 6555.6304 9.7756037e+09 0.16042581 0.054323664 -37.313939 51.354052 6558.0407 9.1197128e+09 0.15858821 0.053204631 -37.427431 51.257372 6560.4510 8.5131399e+09 0.15606497 0.051867706 -37.542289 51.159074 6562.8612 7.8624707e+09 0.15372397 0.050060402 -37.669970 51.045581 6565.2715 7.2367266e+09 0.15165292 0.048010088 -37.797651 50.932088 6567.6818 6.6812389e+09 0.15002761 0.046040717 -37.911419 50.830960 6570.0921 6.2139970e+09 0.14877634 0.044879373 -38.024926 50.730064 6572.5023 5.8501471e+09 0.14702808 0.043942479 -38.135891 50.629177 6574.9126 5.5304640e+09 0.14489803 0.042416679 -38.245180 50.528296 6577.3229 5.2229295e+09 0.14227155 0.039713193 -38.357529 50.424591 6579.7332 4.8773498e+09 0.13946023 0.036667445 -38.480480 50.311096 6582.1434 4.5217336e+09 0.13692708 0.035254762 -38.601938 50.198980 6584.5537 4.1849877e+09 0.13437577 0.034213883 -38.711226 50.098098 6586.9640 3.9049176e+09 0.13171310 0.033158835 -38.820514 49.997217 6589.3743 3.6794430e+09 0.12864351 0.032303476 -38.926743 49.896326 6591.7845 3.4707847e+09 0.12512010 0.028316652 -39.031843 49.795430 6594.1948 3.2778828e+09 0.12196146 0.026065582 -39.141555 49.690106 6596.6051 3.0851128e+09 0.11899945 0.025724523 -39.259777 49.576613 6599.0154 2.8973335e+09 0.11719253 0.024930654 -39.374889 49.466107 6601.4256 2.7221969e+09 0.11748624 0.027246140 -39.479974 49.365224 6603.8359 2.5690760e+09 0.11627983 0.026168417 -39.585059 49.264342 6606.2462 2.4402381e+09 0.11588103 0.027061578 -39.686539 49.163459 6608.6565 2.3285038e+09 0.11303006 0.023715015 -39.787422 49.062577 6611.0667 2.2130485e+09 0.10975569 0.024915899 -39.896607 48.955656 6613.4770 2.0788887e+09 0.10875934 0.023748606 -40.014830 48.842163 6615.8873 1.9429228e+09 0.10725204 0.023278831 -40.125212 48.733257 6618.2976 1.8200255e+09 0.10657879 0.023995488 -40.221903 48.632361 6620.7078 1.7147526e+09 0.10566424 0.024995296 -40.318594 48.531466 6623.1181 1.6347933e+09 0.10382679 0.024535583 -40.419416 48.430584 6625.5284 1.5599420e+09 0.10198851 0.026028123 -40.520298 48.329703 6627.9387 1.4829559e+09 0.099755714 0.025679399 -40.625961 48.221173 6630.3489 1.4088382e+09 0.097777425 0.025929162 -40.734726 48.107678 6632.7592 1.3291392e+09 0.095743362 0.026123380 -40.837546 48.000387 6635.1695 1.2543309e+09 0.093738664 0.026425204 -40.934225 47.899506 6637.5798 1.1889465e+09 0.091759809 0.025877465 -41.032266 47.797203 6639.9900 1.1248751e+09 0.090965318 0.025274215 -41.141031 47.683707 6642.4003 1.0622574e+09 0.090370291 0.025168077 -41.249734 47.570244 6644.8106 1.0042021e+09 0.088821080 0.025431212 -41.342315 47.465097 6647.2209 9.5196733e+08 0.087272765 0.026554061 -41.434802 47.359998 6649.6311 9.0442771e+08 0.086217725 0.026763707 -41.534443 47.249700 6652.0414 8.5641712e+08 0.085888468 0.027261913 -41.638477 47.136207 6654.4517 8.0870839e+08 0.085224411 0.027843806 -41.736677 47.029080 6656.8620 7.6950385e+08 0.083331126 0.028779948 -41.829153 46.928197 6659.2722 7.3404884e+08 0.081773109 0.031777812 -41.923082 46.825729 6661.6825 6.9767372e+08 0.080385761 0.032882563 -42.027119 46.712233 6664.0928 6.5774070e+08 0.079073192 0.031866621 -42.130960 46.598895 6666.5031 6.2227153e+08 0.079163088 0.027006621 -42.219252 46.497997 6668.9133 5.9555708e+08 0.077885316 0.028279003 -42.307524 46.397116 6671.3236 5.6831626e+08 0.077920362 0.026869960 -42.405760 46.285274 6673.7339 5.4756346e+08 0.077117764 0.028556783 -42.509796 46.167051 6676.1442 5.1560890e+08 0.074746303 0.031806628 -42.611393 46.051266 6678.5544 4.8588149e+08 0.073694667 0.030565791 -42.710715 45.937755 6680.9647 4.5898273e+08 0.074480974 0.029649736 -42.803888 45.829335 6683.3750 4.3493880e+08 0.074987055 0.031738110 -42.887956 45.728454 6685.7852 4.1890426e+08 0.074367459 0.033534254 -42.972392 45.627269 6688.1955 3.9805087e+08 0.071608310 0.033830324 -43.071699 45.513774 6690.6058 3.7364038e+08 0.069738697 0.033046439 -43.171006 45.400279 6693.0161 3.5050103e+08 0.068760515 0.031598575 -43.256455 45.294432 6695.4263 3.3433895e+08 0.068010334 0.029781159 -43.340523 45.189347 6697.8366 3.2257033e+08 0.067051584 0.030197141 -43.430166 45.079802 6700.2469 3.1232919e+08 0.065123884 0.030850849 -43.524745 44.966309 6702.6572 2.9831791e+08 0.064005626 0.033401485 -43.619323 44.852816 6705.0674 2.7881816e+08 0.064483807 0.036788513 -43.713899 44.739321 6707.4777 2.6154592e+08 0.064304967 0.040118393 -43.807053 44.625826 6709.8880 2.4665658e+08 0.063421937 0.040567734 -43.896904 44.512331 6712.2983 2.3562801e+08 0.061168639 0.042383748 -43.985679 44.400401 6714.7085 2.3029294e+08 0.058857918 0.047356677 -44.069757 44.295302 6717.1188 2.2131499e+08 0.056592900 0.049866919 -44.153835 44.190203 6719.5291 2.1441728e+08 0.054467740 0.050867160 -44.242575 44.078324 6721.9394 2.0566535e+08 0.054531833 0.050586936 -44.332426 43.964831 6724.3496 1.9449207e+08 0.051427175 0.047006907 -44.422275 43.851337 6726.7599 1.8456358e+08 0.047934660 0.040958221 -44.512124 43.737842 6729.1702 1.7348269e+08 0.047137857 0.040931989 -44.601973 43.624349 6731.5805 1.6584465e+08 0.044783166 0.042905264 -44.691824 43.510856 6733.9907 1.5883942e+08 0.043099890 0.049303341 -44.779480 43.395169 6736.4010 1.5257553e+08 0.044564488 0.051871077 -44.864599 43.276946 6738.8113 1.4551992e+08 0.045123391 0.061787630 -44.951370 43.160373 6741.2216 1.4033877e+08 0.043258794 0.066390613 -45.041221 43.046879 6743.6318 1.3545458e+08 0.038071278 0.075309828 -45.129962 42.933384 6746.0421 1.2681129e+08 0.035416716 0.078497626 -45.215082 42.819892 6748.4524 1.1835588e+08 0.030781788 0.069396945 -45.300204 42.706397 6750.8627 1.1380827e+08 0.027280691 0.073477168 -45.385338 42.592885 6753.2729 1.0959944e+08 0.023717274 0.073860575 -45.470431 42.479334 6755.6832 1.0683013e+08 0.020785522 0.074305799 -45.550835 42.361125 6758.0935 1.0230889e+08 0.019206964 0.073903020 -45.631226 42.242902 6760.5038 94872905. 0.018974188 0.077021927 -45.715831 42.128892 6762.9140 91671210. 0.023419872 0.076576425 -45.800952 42.015399 6765.3243 86727064. 0.025225037 0.079590398 -45.886072 41.901904 6767.7346 83187939. 0.022587013 0.081153217 -45.971193 41.788410 6770.1449 80547632. 0.016540941 0.087231058 -46.053184 41.671787 6772.5551 76510604. 0.010723715 0.093077034 -46.133575 41.553564 6774.9654 70365398. 0.0037702894 0.098923010 -46.213966 41.437928 6777.3757 65913812. -0.0044859193 0.10476899 -46.294359 41.324433 6779.7860 63024993. -0.016817673 0.11061496 -46.374751 41.210939 6782.1962 62054596. -0.066765635 0.11646094 -46.455142 41.097445 6784.6065 59765423. -0.031903649 0.12230691 -46.539182 40.978801 6787.0168 54113244. 0.054334916 0.12815289 -46.631061 40.849090